Updated on 2022/05/19

写真a

 
FUKUSHIGE, Shinichi
 
Affiliation
Faculty of Science and Engineering, School of Creative Science and Engineering
Job title
Professor

Concurrent Post

  • Faculty of Science and Engineering   Graduate School of Creative Science and Engineering

Research Institute

  • 2020
    -
    2022

    理工学術院総合研究所   兼任研究員

Degree

  • 東京大学   博士(工学)

Research Experience

  • 2020.04
    -
    Now

    Waseda University   School of Creative Science and Engineering   Professor

  • 2014.06
    -
    2020.03

    Osaka University

 

Research Areas

  • Human interface and interaction

  • Manufacturing and production engineering

  • Design engineering

  • Environmental materials and recycle technology

  • Environmental policy and social systems

  • Environmental impact assessment

▼display all

Research Interests

  • 環境配慮設計

  • ライフサイクル設計

  • CAD

  • モジュール化設計

  • リデュース設計

  • 持続可能製造業

  • シナリオ分析

  • シナリオ・モデル

  • 環境問題

  • シミュレーション

  • リサイクルコストモデル

  • 持続可能社会

  • リユース

  • シナリオ作成支援

  • アジア地域

  • 持続可能社会シナリオ

  • ライフサイクル・シナリオ

  • 資源循環

  • リサイクル

  • 持続可能な製造業

  • 設計支援

  • シナリオ設計

  • 環境汚染

  • エコデザイン

  • 設計根拠

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Papers

  • A Life Cycle Simulation Method Focusing on the Diffusions of Car- and Ride-Sharing Services and Electric Vehicles

    Taro KAWAGUCHI, Hidenori MURATA, Shinichi FUKUSHIGE, Hideki KOBAYASHI

    Journal of the Japan Society for Precision Engineering   87 ( 7 ) 7_632 - 7_639  2021.07

    DOI

  • Scenario structuring methodology for computer-aided scenario design: An application to envisioning sustainable futures

    Yusuke Kishita, Yuji Mizuno, Shinichi Fukushige, Yasushi Umeda

    Technological Forecasting and Social Change   160  2020.11  [Refereed]

     View Summary

    © 2020 The Author(s) A number of thematic scenarios have been developed for envisioning sustainable futures in order to support strategic decision-making for government and industry. However, methodologies for designing scenarios have generally been under-theorized. For a better understanding and communication among stakeholders involved, this paper aims to propose the concept of computer-aided scenario design whose key characteristic is to provide a graphical representation of scenarios. That is, the paper proposes a method for representing the logical structure of a scenario by drawing the idea of graph theory. Based on this representation method, the paper dynamically connects a scenario with its associated simulators for undertaking what-if analysis in a quantitative manner. In an illustrative case study, the proposed method is applied to an extant scenario for hybrid electric vehicle diffusion. The results show that the method clarified the logical structure of the scenario and the rationales for deriving the scenario's conclusions. It was also demonstrated that the method enabled to create scenario variants when the original assumptions were changed. The proposed method would facilitate the iterative process of scenario design, thereby encouraging scientific dialog between researchers and stakeholders.

    DOI

  • A life cycle simulation method focusing on vehicle electrification and sharing

    T. Kawaguchi, H. Murata, S. Fukushige, H. Kobayashi

    Proceedings of the Electronics Goes Green 2020     197 - 203  2020.09

  • Connected lifecycle systems: A new perspective on industrial symbiosis

    Hideki Kobayashi, Hidenori Murata, Shinichi Fukushige

    Procedia CIRP   90   388 - 392  2020  [Refereed]

    Authorship:Last author

     View Summary

    © 2020 The Author(s). Published by Elsevier B.V. Decreasing total natural resource input is critical for sustainability. Thus, improving resource efficiency is increasingly required at all levels from products to industry-wide systems. Product lifecycle systems and business models for circular economy, such as remanufacturing and sharing products, have been developed in only particular markets. Lifecycle processes of different products are often connected after sales, even if the products and their lifecycle processes were developed by independent companies or business communities. This study focuses on one such complex system called “connected lifecycle systems,” which is a system of systems comprising product lifecycle systems. Connected lifecycle systems can be regarded as industrial symbiosis in wide areas. The objective of this paper is to propose a hybrid simulation architecture for more realistically calculating dynamic material flow in connected lifecycle systems.

    DOI

  • Data assimilation mechanism for lifecycle simulation focusing on process behaviors

    Kazuho Fujimoto, Shinichi Fukushige, Hideki Kobayashi

    International Journal of Automation Technology   14 ( 6 ) 882 - 889  2020  [Refereed]

     View Summary

    © 2020, Fuji Technology Press. All rights reserved. Systematic lifecycle design and management are promising approaches for constructing sustainable product lifecycle systems. Lifecycle simulation (LCS) has been used to evaluate a product lifecycle in the design phase from both the environmental and economic perspectives. Based on material flows through each process of the product lifecycle, the LCS calculates the time variation in environmental loads, cost, and profit. In each process of the LCS model, functions that regulate the behaviors of the process, called behavior functions, are set, and these functions control material flows. Previously, we proposed a data-assimilated LCS method that combines data assimilation (DA) with LCS to realize adaptive management based on actual states of the product lifecycle. In this previous development, the DA mechanism modified the material flows of an entire lifecycle in the simulation model based on actual flows observed in each process at the time of the DA. However, because process behaviors were not modified, the gap between material flows predicted by the simulation and the flows of the actual lifecycle increased over time. To overcome this limitation, in this study, we propose a new DA mechanism that modifies the behaviors of un-observed processes based on observed material flows. The proposed DA mechanism uses the response surface methodology to estimate the behaviors while tracing the causal relation in the LCS model in reverse. A case study on a photovoltaic panel reuse business showed that the DA mechanism successfully merged the observed data into the process behaviors in the LCS model including the processes where no data were observed, thereby improving the accuracy of the simulation for future pre-diction. Systematically analyzing the current and future process states of the product lifecycle can support decision-making in lifecycle management.

    DOI

  • Needs-based workshops for sustainable consumption and production in Vietnam

    Hideki Kobayashi, Yoshinori Sumimura, Chuc Nguyen Dinh, Minh Tran, Hidenori Murata, Shinichi Fukushige

    Smart Innovation, Systems and Technologies   155   35 - 47  2019  [Refereed]

    Authorship:Last author

     View Summary

    © 2019, Springer Nature Singapore Pte Ltd. This paper focuses on the fulfillment of fundamental human needs in the achievement of sustainable consumption and production (SCP). Here, we focus on the Human-scale development (HSD) theory proposed by Chilean economist Max-Neef, in which the following nine fundamental needs are introduced: subsistence, protection, affection, understanding, participation, idleness, creation, identity, and freedom. In HSD, an important role is played by satisfiers, which are ways of fulfilling the above-mentioned fundamental needs in a particular context, such as climate and culture. From the standpoint of a producer, satisfiers are regarded as the starting points of product development for SCP. This paper introduces the opposite concept, referred to as a barrier—a factor that interferes with fulfilling fundamental needs. The purpose of this paper is to determine the satisfiers and barriers for younger people in Vietnam based on the results of needs-based workshops. Around 1200 satisfiers and barriers were extracted; however, barriers were largely equivalent to satisfiers. We found that the concept of satisfiers is useful to achieve SCP, because it is comprehensive, realistic, and provides an opportunity for social practice.

    DOI

  • Scenario analysis of car- And ride-sharing services based on life cycle simulation

    Taro Kawaguchi, Hidenori Murata, Shinichi Fukushige, Hideki Kobayashi

    Procedia CIRP   80   328 - 333  2019  [Refereed]

     View Summary

    © 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license Car- and ride-sharing services are focused on environmental and new business issues in recent years. This study analyzes environmental effects of the transition from car ownership to sharing services and aims to clarify sensitive parameters by sensitivity analysis. The following steps are carried out: 1) model causal relationships between variables in ownership and sharing service business models, 2) develop life cycle simulation models of gasoline and electric vehicles based on these causal relationships, and 3) analyze transition scenarios. The results show that carbon dioxide emissions and copper usage decrease with the diffusion of car- and ride-sharing services, and that the average number of vehicle passengers is the most sensitive parameter for car- and ride-sharing services.

    DOI

  • A lifecycle simulation method for global reuse

    Hidenori Murata, Naoya Yokono, Shinichi Fukushige, Hideki Kobayashi

    International Journal of Automation Technology   12 ( 6 ) 814 - 821  2018.11  [Refereed]

     View Summary

    © 2018, Fuji Technology Press. All rights reserved. Reuse is an effective method of circulating resources in terms of environmental benefits because it requires fewer resources and less energy than manufacturing new products from virgin materials. In global reuse, a used component or module is reused in a different application. To evaluate a system of multiple product lifecycle systems (PLSs), the lifecycle simulation methodology LCS4SoS has been proposed. LCS4SoS comprises three elements, namely, individual PLSs, interactions among them, and their evolution over time. This paper proposes a lifecycle simulation method for global reuse based on the LCS4SoS framework. Flow control rules are developed for global reuse to control the directions and quantities of material flow among the PLSs. The usefulness of this method is verified by a case study of automobile and stationary battery PLSs.

    DOI

  • A living-sphere approach for locally oriented sustainable design

    Hideki Kobayashi, Shinichi Fukushige

    Journal of Remanufacturing   8 ( 3 ) 103 - 113  2018.10  [Refereed]

    Authorship:Last author

     View Summary

    © 2018, The Author(s). Achieving a sustainable consumption and production pattern is one of the United Nation’s sustainable development goals for 2030. To achieve this, it is necessary to consider the environmental burden from a product life cycle and the quality of life of the consumer. In this study, a systematic approach for connecting basic human needs and the product development process, called the living-sphere approach, is proposed. This approach is intended to encompass the complete relationship between region-specific basic needs and durable products. In this approach, value graphs, which visualize the value system of products, are connected to satisfiers fulfilling the basic needs set out by Max-Neef. A value graph links satisfiers and the traditional product development process. The significance of the proposed approach is twofold. First, improving quality of daily life and traditional product development are combined in the same framework. Second, the design of single products and the total optimization of multi-products are supported at the requirement level.

    DOI

  • A simulation methodology for a system of product life cycle systems

    Hideki Kobayashi, Takuya Matsumoto, Shinichi Fukushige

    Advanced Engineering Informatics   36   101 - 111  2018.04  [Refereed]

    Authorship:Last author

     View Summary

    © 2018 Elsevier Ltd To realize environmental sustainability, the flow of natural resources into industrial systems must be reduced and stabilized at a suitable level. One way to reduce resource flows in society is to establish resource-circulating manufacturing systems. To foster the circulation of resources in industry, life cycle simulation (LCS) technologies, which are based on discrete-event modeling, have been developed to dynamically evaluate the life cycles of products from resource extraction to end of life from both environmental and economic aspects. In reality, various industrial products interact with each other in unanticipated ways, and then these interactions affect the material flows in product life cycles. This type of complex system is called a system of systems (SoS). Focusing on this issue, we expand the evaluation's system boundary to include a system of multiple product life cycle systems. To handle an SoS quantitatively, we introduce typical types of interactions between product life cycle systems. The purpose of this study was to propose a new LCS methodology, called “LCS4SoS,” that focuses on an SoS consisting of different kinds of product life cycle systems. A prototype system of LCS4SoS was implemented based on this proposed methodology. Through a case study, it was found that the proposed methodology is useful for evaluating an SoS consisting of multi-product life cycle systems.

    DOI

  • Augmented Reality Based Tele-immersion System for Collaborative Design in a Real Space

    Shinichi Fukushige

    Proceedings of Asian Conference on Digital and Design Engineering 2018 (ACDDE 2018)    2018  [Refereed]

    Authorship:Lead author, Corresponding author

  • Lifecycle Simulation Method for System of Systems Focusing on Interaction Modeling

    Hidenori Murata, Hideki Kobayashi, Shinichi Fukushige

    Procedia CIRP   69   838 - 842  2018  [Refereed]

    Authorship:Last author

     View Summary

    © 2018 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license. Reducing environmental loads and resource consumption throughout the product lifecycle is one approach to address environmental problems. Lifecycle simulation (LCS) is a tool to evaluate environmental impacts considering lifecycle options such as maintenance, reuse, and recycling. Various interactions exist between different product lifecycle systems. For example, to increase the energy density and cycle life, a lithium ion battery (LiB) from an electric vehicle (EV) can be reused in a stationary battery (SB). Considering these interactions, a new LCS method that includes multiple product lifecycle systems is needed. In this research, which assumes that a system of systems (SoS) consists of different product lifecycle systems and their interactions, flow control rules among different product lifecycle systems are developed and applied as a case study to LiB reuse in SB from EV.

    DOI

  • Maintenance scenario evaluation for point-of-sale terminals based on lifecycle simulation and risk assessment

    Shinichi Fukushige, Yu Murai, Hideki Kobayashi

    Procedia CIRP   73   259 - 264  2018  [Refereed]

     View Summary

    © 2018 The Authors. Published by Elsevier B.V. Durable equipment requires regular maintenance throughout the lifecycle to achieve the expected performance and reliability under acceptable maintenance costs. This paper proposes a maintenance scenario evaluation method for point-of-sale (POS) terminals. The scenarios are the description of differences in the intervals and contents of maintenance service, which diversify the frequency of product failures and the maintenance costs. The evaluation method quantifies risks caused by the failures based on lifecycle simulation (LCS) and risk assessment to support selecting an appropriate maintenance scenario. In the method, the LCS calculates the frequency of failures and the monetary flow of maintenance activities, and the risk assessment is used to estimate the degree of risks depending on the maintenance scenario.

    DOI

  • Computer-Aided Design for Semi-Destructive Disassembly

    Shinichi Fukushige, Yumi Shiraishi, Yasushi Umeda

    Sustainability through Innovation in Product Life Cycle Design     47 - 59  2017  [Refereed]

    Authorship:Lead author, Corresponding author

  • The potential of additive manufacturing technology for realizing a sustainable society

    Sustainability Through Innovation in Product Life Cycle Design

        475 - 486  2017  [Refereed]

  • A Practice of Design Thinking through Manufacturing-based Learning-Challenge by Interdisciplinary Groups of Students-

    KOBAYASHI Yuki, KUSHIDA Kana, TAKENO Yusuke, FUKUSHIGE Shinichi, NOMAGUCHI Yutaka

    Journal of JSEE   65 ( 3 ) 3_93 - 3_96  2017

     View Summary

    We report, from the perspective of participants, about the project-based learning class where engineering and non-engineering students collaboratively tackled manufacturing. It aimed to cultivate the design thinking ability of master course students coming from various departments of Osaka University. Although we had less backgrounds of engineering or manufacturing, we succeeded in defining user needs and creating a product which meets them. We subsequently participated in an international conference on engineering design and presented another product there. Since design thinking could be applied there as well, we could win the championship. Manufacturing is a good way for students to experience problem solving, so we could gain more than simple knowledge of engineering.

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  • Interactive image-based re-modeling system for virtual editing of real objects

    FUKUSHIGE Shinichi

    Transactions of the JSME (in Japanese)   83 ( 853 ) 17 - 00121-17-00121  2017  [Refereed]

    Authorship:Lead author

     View Summary

    <p>This paper proposes an interactive image-based re-modeling system for virtual reshaping of real objects via a video see-through display. The system provides a quasi-realistic design environment in which a designer manipulates the shape and location of real products installed in a real living space. A prototype of the proposed system is developed by integrating two sub-systems for solid modeling based on 3D-CAD and visualization based on image-based rendering. A case study of the virtual redesign of real products illustrates that the proposed system allows designers to examine various design changes on the existing products in an immersive and realistic 3D environment.</p>

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  • A Visualization System of Design Information for Locally-oriented Sustainable Product

    Yuya Sugita, Shinichi Fukusige, Hideki Kobayashi

    Procedia CIRP   61   617 - 622  2017  [Refereed]

     View Summary

    © 2017 The Authors. One of the practical approaches to environmental issues in developing countries is introducing eco-products made in developed countries. However, such products are not always acceptable due to differences of various contexts in the different regions. It is necessary to understand how such local conditions are related with product function and structure. The aim of this study is to develop a design support system for visualizing design information for locally-oriented product design. The system aids users in understanding relationship among product specifications and local information. The authors show a case study on home electric appliances in Vietnam and Japan to validate the system.

    DOI

  • Data-assimilated lifecycle simulation for adaptive product lifecycle management

    Shinichi Fukushige, Masaki Nishioka, Hideki Kobayashi

    CIRP Annals - Manufacturing Technology   66 ( 1 ) 37 - 40  2017  [Refereed]

    Authorship:Lead author

     View Summary

    © 2017 This paper proposes a data-assimilated lifecycle simulation (DA-LCS) system. Data assimilation (DA) is a self-adjustment method for decreasing differences between a simulation and observation data from an actual-system by conforming the simulation model parameters to the observation at appropriate time intervals. The proposed system applies DA to LCS for adaptive operations in product lifecycle management. A case study of the lifecycle of a photovoltaic panel reuse business shows that DA-LCS successfully merges measurement data acquired from actual business operations into the LCS model, and sequentially revises the simulation estimations through DA.

    DOI

  • A Functional Approach to Life Cycle Simulation for System of Systems

    Kazune Kawakami, Shinichi Fukushige, Hideki Kobayashi

    Procedia CIRP   61   110 - 115  2017  [Refereed]

     View Summary

    © 2017 The Authors. Life cycle simulation (LCS) evaluates dynamic material flows in the life cycles of a single product family. However, in reality, there are various interactions between different product life cycles, such as demand substitution among different types of products and the global reuse of components in other products. In this paper, an entire system consisting of multi-kind product life cycles is regarded as a system of systems (SoS), which is an assemblage of systems where each system possesses operational and managerial independence. This paper proposes an LCS system for SoS that will support engineers in making decisions about system management through describing and simulating interactions.

    DOI

  • A living-sphere approach for locally oriented sustainable design

    Hideki Kobayashi, Shinichi Fukushige

    Smart Innovation, Systems and Technologies   68   119 - 126  2017  [Refereed]

     View Summary

    © Springer International Publishing AG 2017. Achieving a sustainable consumption and production pattern is one of the United Nation’s sustainable development goals for 2030. To achieve this, it is necessary to consider the environmental burden from a product life cycle and the quality of life of the consumer. In this study, a systematic approach for connecting basic human needs and the product development process, called the living-sphere approach, is proposed. In this approach, value graphs, which visualize the value system of products, are connected to satisfiers fulfilling the basic needs set out by Max-Neef. A value graph links satisfiers and the traditional product development process. The significance of the proposed approach is that improving quality of daily life and traditional product development are combined in the same framework.

    DOI

  • Design Support Method for a Product Life Cycle Focusing on Circulation of Individual Products

    MATSUYAMA Yuki, FUKUSHIGE Shinichi, KOBAYASHI Hideki, UMEDA Yasushi

    JOURNAL OF JAPAN SOCIETY FOR DESIGN ENGINEERING   51 ( 8 ) 583 - 596  2016  [Refereed]

     View Summary

    <p>To utilize resources efficiently, realizing closed-loop manufacturing becomes a crucial issue. This paper proposes a design support method for a product life cycle in order to circulate resources efficiently by means of recycling, reuse, remanufacturing, and so forth. Our previous work has proposed a design object model, which represents a product life cycle from the viewpoint of both its nominal information and entity information. This study refers to a specific state of an individual product as 'entity information,' as opposed to 'nominal information,' which represents design information specified by designers. The method proposed in this paper extracts design parameters to be modified from the nominal information to achieve a design requirement by analyzing relationship of the parameters of the product and its life cycle flow described in the design object model. The method conducts sensitivity analysis on the extracted design parameters in order to identify a design parameter effective to achieve the design requirement. A case study on a product life cycle of a smart phone is illustrated for demonstrating the feasibility of the proposed method.</p>

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  • A Modeling Method for a Product Life Cycle Focusing on Representation of Individual Products

    MATSUYAMA Yuki, FUKUSHIGE Shinichi, UMEDA Yasushi

    Journal of the Japan Society for Precision Engineering   82 ( 1 ) 106 - 114  2016  [Refereed]

     View Summary

    Individual products have a variety of states depending on their life cycle histories even if they are produced from the same design information, which represents their nominal information specified by designers. We call a specific state of an individual product as &ldquo;entity information,&rdquo; as opposed to the nominal information. To utilize resources of products efficiently throughout the entire life cycle, this paper proposes a method for modeling both nominal information of a product life cycle and the entity information at its design stage. This method represents the nominal information with hierarchical product structure model and life cycle flow model, which we have already proposed in our previous study. In this paper, we propose a model of the entity information, which we call &ldquo;Entity Information Model.&rdquo; Entity Information Model represents states of individual entities and the changes of the number of the entities in each life cycle process such as maintenance, collection, and end-of-life processes by recording life cycle histories of individual entities. Entity Information Model is created by using life cycle simulation technique. A case study of a smart phone is illustrated for demonstrating the feasibility of the proposed method.

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  • Scenario building on the diffusion of fuel cell cogeneration systems for apartment houses

    KISHITA Yusuke, NAKAMURA Yasuaki, KEGASA Akeshi, HISAZUMI Yoshinori, HORI Tsukasa, FUKUSHIGE Shinichi, UMEDA Yasushi

    Transactions of the JSME (in Japanese)   81 ( 821 ) 14 - 00250-14-00250  2015  [Refereed]

     View Summary

    Fuel cell cogeneration is one of promising energy-saving technologies in pursuit of a sustainable society. However, it is unpredictable how many fuel cell cogeneration systems will be diffused since there are many future uncertainties, such as people's lifestyles and national energy policies. As an approach to tackling with this problem, this paper proposes a method for describing scenarios to analyze the diffusion of residential energy systems, such as fuel cell cogeneration systems. We develop a simulation model for estimating the diffusion of residential energy systems, in which conjoint analysis is undertaken to analyze consumers' preferences. In a case study, several scenarios are described for analyzing the diffusion of solid oxide fuel cell (SOFC) cogeneration systems for apartment houses, where the region of interest is Kansai Area, Japan from 2013-2030. The described scenarios differ in terms of nuclear energy policies. The results show that the number of fuel cell cogeneration systems in 2030 reaches 147-157 thousands depending on the share of nuclear power. In addition, it is revealed that monthly utility cost has a much larger impact on SOFC diffusion than CO2 emissions. Future work includes further what-if analyses of the scenarios to identify factors that would give a significant influence on SOFC diffusion.

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  • Proposal of a computational design support method for sustainability scenario design

    MIZUNO Yuji, KISHITA Yusuke, FUKUSHIGE Shinichi, UMEDA Yasushi

    Transactions of the JSME (in Japanese)   81 ( 822 ) 14 - 00269-14-00269  2015  [Refereed]

     View Summary

    Manufacturing industry is required to transform itself into sustainable form. For this task, drawing images of sustainable manufacturing through developing a "scenario" is a hopeful means. When developing a scenario, the developers draw several future visions and transition paths qualitatively and quantitatively. However, scenario development is difficult and exhaustive task. In order to tackle this problem, referring the ideas of design engineering, we propose a framework of "scenario design" and develop a computational support method for scenario design. Based on this, we proposed a computable scenario model and a scenario design process. The proposed model includes sub models expressing intermediate states between the motivation for developing scenario and a documented scenario. We proposed a scenario design process includes four steps in which the scenario is designed in stepwise manner. In the first step, the designers clarify the objective, backgrounds, and outline of the scenario as a whole. In the second step, the designers determine the scenario structure, the number and outlines of sub scenarios. In the third step, the designers elaborate the details of the scenario qualitatively and quantitatively. At last in the fourth step, the result of the scenario design is documented for outreach activities. We implemented a backcasting scenario design support method proposed in a previous study on the design model and the design process. We developed a backcasting scenario design support system. As a case study, we designed Sustainable Manufacturing Scenario with the proposed method and the support system, in which economically and environmentally sustainable futures of Japanese manufacturing industry is envisioned. Through the case study, the effectiveness of the proposed design method and the support system is verified.

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  • Proposal of a design method for semi-destructive disassembly with split lines

    Yasushi Umeda, Naoya Miyaji, Yumi Shiraishi, Shinichi Fukushige

    CIRP Annals - Manufacturing Technology   64 ( 1 ) 29 - 32  2015  [Refereed]

    Authorship:Corresponding author

     View Summary

    © 2015 CIRP. This paper proposes a computer-aided design method for semi-destructive disassembly with split lines. This method aims at extracting reusable, recyclable, or hazardous components more efficiently than manual disassembly with higher quality than shredding. The split line is a shape feature of a product that enables to destruct the product into desired shape, like pull tabs of cans. The proposed method aids a designer in adding proper split lines to extract target components. A case study showed that the semi-destructive disassembly sequence of an air conditioner with the split lines reduces the number of steps needed for extracting a target component.

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  • Simulating Life Cycles of Individual Products for Life Cycle Design

    Yuki Matsuyama, Shinichi Fukushige, Yasushi Umeda

    Procedia CIRP   38   159 - 164  2015  [Refereed]

     View Summary

    © 2015 The Authors. Published by Elsevier B.V. Minimizing environmental loads and resource consumption is a major issue in the manufacturing industry while enhancing value of products. Individual products have a variety of states depending on their life cycle histories even if they are produced from the same design information. While design information represents their 'nominal information' specified by designers, we call a specific state of an individual product as 'entity information.' The differences in individual products make it instable in terms of the states and quantity to circulate resources and to deliver service activities at the after sales market. To realize efficient resource circulation and high quality services, designers should determine nominal information of a product and of its life cycle flow by analyzing the entity information at its design stage. This paper proposes a method for modeling both nominal information of a product life cycle and the entity information. This method represents the nominal information with product model and life cycle flow model. In this paper, we define a model of the entity information, which shows states of individual products and the number of the products in each life cycle process such as maintenance, collection, and end-of-life treatments. To create this model, we derive entity information throughout the entire life cycle flow by using life cycle simulation technique. A case study of a smart phone is illustrated for demonstrating the feasibility of the proposed modeling method.

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  • A study on optimum circulation period of products for minimizing lifecycle energy consumption

    Yuji Mizuno, Naoya Kintoki, Yusuke Kishita, Shinichi Fukushige, Yasushi Umeda

    Procedia CIRP   29   597 - 602  2015  [Refereed]

     View Summary

    © 2015 The Authors. Published by Elsevier B.V. Combination of long product lifetime and recycling is effective for reducing material use. However, in the case of products that uses energy in their use phase, early replacement of old products with new energy efficient products may contribute to reduction of lifecycle CO2 emission. In the previous studies, we proposed a formula to calculate optimum circulation period (OCP) of the products based on the improvement of energy efficiency. The formula was applied to the products produced in 1991-2000. This paper calculates the OCP of the latest products and analyzes the effect of rapid circulation of products. As a result, OCP and RCP effects are different from the previous studies, because characteristics of latest products are different from products of 1991-2000. Especially, OCP of Hybrid Electric Vehicles excesses three times than the normal product life span. Special case of rapid circulation between different type products, such as Gasoline Vehicles and Hybrid Electric Vehicles was effective for CO2 emission reduction.

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  • Envisioning sustainable manufacturing industries of japan

    Yuji Mizuno, Yusuke Kishita, Shinichi Fukushige, Yasushi Umeda

    International Journal of Automation Technology   8 ( 5 ) 634 - 643  2014.09  [Refereed]

     View Summary

    © 2009 Fuji Technology Press Co,. Ltd. All Rights Reserved. In order to adapt to or overcome the difficulties Japan’s manufacturing industry is facing today, drawing normative future visions of sustainable manufacturing is required. The future is undeterminable, so the future visions cannot be fixed. Therefore, in order to draw visions of sustainable manufacturing of Japan, our research group has developed its Sustainable Manufacturing Scenario using the backcasting method. Here, a scenario is a set of stories detailing several future visions and transition paths toward them. Backcasting is a method of developing a scenario, one in which ideal future visions are developed, and then transition paths from the visions back to the present are drawn. To quantify and evaluate the future visions, we propose a model called SISA (Scenario-based Industrial Structure Analysis), which is based on Input-Output (I-O) tables. An I-O table quantitatively represents final consumption and transactions among industrial branches of a specific region in a specific period. In the SISA model, the I-O table representing future industry is given from the present I-O table, and several parameters reflect the hypotheses set in the scenario. Our research group has developed five different future visions of Japanese manufacturing industries. We set three future targets: GDP, employment, and CO2 . The visions are quantified on the SISA model and investigated as to whether they achieve the future targets or not. Based on this analysis, we have concluded that drastic technological change is required to achieve the CO2 target, and cooperation with service manufacturing is important if the employment target is to be met.

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  • Proposal of a design method for dismantling products with split-lines

    MIYAJI Naoya, SHIRAISHI Yumi, FUKUSHIGE Shinichi, UMEDA Yasushi

    Transactions of the JSME (in Japanese)   80 ( 818 ) TRANS0290 - TRANS0290  2014  [Refereed]

     View Summary

    This paper proposes a design method for dismantling a product by adding split-lines to the product. This method aims at extracting target components for their reuse, recycling, and proper disposal. The split-lines enable to destruct a product into desired shapes, like pull tabs of cans and caps of PET bottles. The proposed design method supports a designer in determining split-lines to extract a target component. This method classifies the components of the product into shells that surround the target component and finds out the areas in which split-lines can be added for each shell. Then the method finds out candidates of dismantling sequences with split-lines from the candidates of each shell's split-lines. A case study shows that the dismantling of a LCD TV with split-lines reduces the number of manual operations needed for extracting a target component.

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  • Scenario analysis of regional electricity demand in the residential and commercial sectors - Influence of diffusion of photovoltaic systems and electric vehicles into power grids -

    Naoki Iwai, Naoto Kurahashi, Yusuke Kishita, Yohei Yamaguchi, Yoshiyuki Shimoda, Shinichi Fukushige, Yasushi Umeda

    Procedia CIRP   15   319 - 324  2014  [Refereed]

     View Summary

    Recent years, various new energy products, such as photovoltaic (PV) systems and electric vehicles (EVs), have been diffused. While the diffusion of such products will affect the electricity demand of power grids, it is difficult to predict to what extent those products will be diffused in our society because the diffusion of such products depends on various unforeseeable factors such as energy policies. To analyze the influence of the diffusion of such products upon electricity demand, this paper describes several scenarios of future regional power grids. We focus on residential and commercial sectors because the end-use energy consumption in these sectors is, at least in Japan, increasing and it thus needs to be reduced. In the case study, we described scenarios in Toyonaka City, Osaka Prefecture, Japan. The results revealed that the total electricity demand in the residential and commercial sectors decreases 10.5% from 2012 to 2030 with population decrease. The diffusion of PV decreases the total electrical load of the grid by 19.7%. Moreover, EV diffusion has the potential to reduce the peak of electrical load by 37.3% by using batteries of EVs. © 2014 Published by Elsevier B.V.

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  • Scenario analysis of the diffusion of fuel cells in the residential sector

    Yusuke Kishita, Yasuaki Nakamura, Akeshi Kegasa, Yoshinori Hisazumi, Tsukasa Hori, Shinichi Fukushige, Yasushi Umeda

    Procedia CIRP   15   294 - 299  2014  [Refereed]

     View Summary

    A fuel cell is a promising element for saving energy by utilizing waste heat for hot water supply. When assessing the influences of fuel cells in a real world, however, the question is how many fuel cells will be diffused in a region because there are many unpredictable factors, such as national energy policies and consumers' lifestyles. This paper takes a scenario approach to analyzing the environmental impact caused by the diffusion of fuel cells under different social situations. A case study describes three scenarios for estimating the diffusion of solid oxide fuel cells (SOFC) for apartment buildings in 2030, in which conjoint analysis is undertaken for quantifying consumers' preferences. © 2014 Elsevier B.V.

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  • Study of life cycle design focusing on resource balance throughout product life cycles

    Yuki Matsuyama, Tomohiko Matsuno, Shinichi Fukushige, Yasushi Umeda

    Procedia CIRP   15   455 - 460  2014  [Refereed]

    Authorship:Corresponding author

     View Summary

    Life cycle design is a promising approach for introducing efficient resource circulation. In such design, there are difficulties in balancing demand and supply for resources throughout product life cycles. For the resource balance, it is important to design a product life cycle focusing on individual products and their parts, since they change their states diversely and flow along different circulation paths through their life cycles. This paper proposes a modelling method for the individual products and parts in addition to its design information. The design information is the nominal information of the product specified by designers. To achieve this, this paper defines three models; hierarchical structure model, life cycle flow model, and entity information model. Hierarchical structure model represents design information of a product. Life cycle flow model represents a network of processes included in product life cycles. Entity information model represents information of individual products and parts. The information indicates when each product and part flows along which circulation paths in which state. With this information, this method represents resource balance throughout product life cycles. Moreover, this study employs life cycle simulation technique to derive the entity information model from the hierarchical structure model and life cycle flow model. We demonstrate the proposed modelling method via its application to a smart phone in a case study. © 2014 Published by Elsevier B.V.

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  • Toward a sustainable business design: A survey

    Shinsuke Kondoh, Hitoshi Komoto, Yusuke Kishita, Shinichi Fukushige

    Procedia CIRP   15   367 - 372  2014  [Refereed]

     View Summary

    Sustainable business is characterized by its facets to balance triple bottom lines (i.e., profit, planet, and people). In sustainable business design, it is crucial to consider interaction between the core business and external environment, which does not seem to influence the profit of the core business but necessary to explain their intended environmental and social value proposition. To construct a particular model of sustainable business, the paper conducted a survey on the study of business models and, in particular, sustainable business models (e.g., eco-innovations, sustainable innovations, product-service systems). The survey focuses on how the study models external environment and its influences on the core business characterized by "externality". Through discussion on the findings of the literature review, three key issues to be addressed for constructing sustainable business model are identified: taxonomy of externality, identification of a set of models (i.e., aspect model), and identification of interrelationship among them. First and second issues clarify particular aspects of externality. By considering third issue, the designer is able to design sustainable business by integrating these aspects. © 2014 Published by Elsevier B.V.

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  • Proposal of Life Cycle Planning Support Method for Life Cycle CAD

    Yuki Matsuyama, Shinichi Fukushige, Yasushi Umeda

    International Journal of CAD/CAM   13 ( 2 ) 73 - 79  2013  [Refereed]

  • Quantitative design modification for the recyclability of products

    Shinichi Fukushige, Takahiro Mizuno, Eisuke Kunii, Yuki Matsuyama, Yasushi Umeda

    Re-Engineering Manufacturing for Sustainability - Proceedings of the 20th CIRP International Conference on Life Cycle Engineering     27 - 33  2013  [Refereed]

     View Summary

    This paper proposes a design support method for increasing the recyclability of electrical and electronic products. The method estimates the recyclability rate and the disassembly time of a product based on its material composition and endof- life scenario. Sensitivity analysis is conducted on the recyclability rate in order to quantify the impact of design changes in the product's material composition, mass of components, and end-of-life treatment processes. For the feasibility check of the design changes, we introduce a structural model of the product, which represents the geometric constraints among components to assess their disassemblability. As a case study, the recyclability of a LCD TV with an end-of-life scenario in Europe was evaluated and sensitivity analysis on the TV generated design alternatives that increase the recyclability rate while keeping the disassembly time of the original design.

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  • Consistency management system between product design and the lifecycle

    Shinichi Fukushige, Yuki Matsuyama, Eisuke Kunii, Yasushi Umeda

    Proceedings of the ASME Design Engineering Technical Conference   4  2013  [Refereed]

     View Summary

    Within the framework of sustainability in manufacturing industry, product lifecycle design is a key approach for constructing resource circulation systems of industrial products that drastically reduce environmental loads, resource consumption and waste generation. In such design, designers should consider both a product and its lifecycle from a holistic viewpoint, because the product's structure, geometry, and other attributes are closely coupled with the characteristics of the lifecycle. Although product lifecycle management (PLM) systems integrate product data during its lifecycle into one data architecture, they do not focus on support for lifecycle design process. In other words, PLM does not provide explicit models for designing product lifecycles. This paper proposes an integrated model of a product and its lifecycle and a method for managing consistency between the two. For the consistency management, three levels of consistency (i.e., topological, geometric, and semantic) are defined. Based on this management scheme, the product lifecycle model allows designers to evaluate environmental, economic, and other performance of the designed lifecycle using lifecycle simulation. Copyright © 2013 by ASME.

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  • Generating design alternatives for increasing recyclability of products

    Yasushi Umeda, Shinichi Fukushige, Takahiro Mizuno, Yuki Matsuyama

    CIRP Annals - Manufacturing Technology   62 ( 1 ) 135 - 138  2013  [Refereed]

    Authorship:Corresponding author

     View Summary

    This paper proposes a design support method for improving the recyclability of electronic and electrical products. The method estimates the recycling rate of a product based on its end-of-life scenario. The method supports a designer in generating design alternatives that increase the rate by conducting impact analysis with the change of material composition and end-of-life scenario. The method suggests design alternatives with the constraint of keeping the other performance factors (e.g.; flexural strength and thermal conductivity) constant by adjusting the geometric parameters (e.g.; thickness and volume) of the components. © 2013 CIRP.

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  • Effects of boundary conditions on the end-of-life treatment of LCD TVs

    Jef R. Peeters, Paul Vanegas, Joost R. Duflou, Takahiro Mizuno, Shinichi Fukushige, Yasushi Umeda

    CIRP Annals - Manufacturing Technology   62 ( 1 ) 35 - 38  2013  [Refereed]

     View Summary

    Differences in legislation and markets for recycled materials result in the national implementation of distinct end-of-life treatment strategies. This paper presents a comparative analysis of the boundary conditions in Belgium and Japan that cause the adoption of diverse treatment strategies for the rapidly increasing number of end-of-life flat screen TVs. In addition, both treatment strategies are evaluated from an ecological and economic perspective and opportunities for improvement are identified. © 2013 CIRP.

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  • Feasibility Assessment of Sustainability Scenarios Based on the Estimation of Metal Demand (Case Analysis of Long-Term Energy Scenarios Focusing on the Risk of Copper Depletion)

    KISHITA Yusuke, INOUE Yuta, KOBAYASHI Hideki, FUKUSHIGE Shinichi, UMEDA Yasushi

    TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C   79 ( 805 ) 3221 - 3233  2013  [Refereed]

     View Summary

    There are a number of long-term scenarios toward envisioning a sustainable society, particularly a low-carbon society. While such scenarios often assume various low-carbon technologies with an aim to reduce greenhouse gas emissions, it is unclear whether the scenarios are feasible from the viewpoint of resource depletion. For example, copper is a critical base metal since introducing low-carbon technologies (e.g., electric vehicle and wind power generator) may induce copper consumption. This paper proposes a method for estimating long-term metal demand based on sustainability scenarios. Our method proposes an integrated model that evaluates world metal demand from two different perspectives - (1) economic development and (2) dissemination of new products, e.g., electric vehicles. As a case study, the feasibility of a long-term energy scenario is assessed from the viewpoint of copper depletion. Results illustrate that the cumulative copper consumption exceeds the copper reserved in the earth by around 2040. The increase in copper consumption results mainly from world economic growth led by developing countries, while the dissemination of electric vehicles has a minor impact on the consumption increase.

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  • Scenario design approach to envisioning regional electricity networks with photovoltaics and electric vehicles

    Yusuke Kishita, Naoto Kurahashi, Yohei Yamaguchi, Yoshiyuki Shimoda, Shinichi Fukushige, Yasushi Umeda

    Proceedings of the International Conference on Engineering Design, ICED   5 DS75-05   251 - 260  2013

     View Summary

    Toward realizing a low-carbon society, a variety of green products have been disseminated, such as photovoltaics (PV) and electric vehicles (EVs). While the dissemination of such green products will result in changes of electricity demand in a region, it is unclear to what extent the dissemination of these products will influence on regional electricity networks (or electrical grids) in the future. To explore regional electricity networks that might occur in the future, this paper describes plural scenarios that illustrate different situations in terms of the diffusion of PV and EVs. A simulation model is developed for estimating the diffusion of PV and EVs as well as regional electricity demand. As a case study, five scenarios of regional electricity networks in Toyonaka City, Osaka, Japan are described assuming the year 2030. The results demonstrate that the numbers of PV and EVs largely differ depending on social situations surrounding the electricity networks, such as national energy policies. Moreover, it is shown that utilizing EVs as batteries has the potential of reducing the peak of electricity demand from the electricity network by 46-48%.

  • Proposal of a Design Support Method of Backcasting Scenarios for Sustainable Society

    WADA Haruna, KISHITA Yusuke, MIZUNO Yuji, FUKUSHIGE Shinichi, UMEDA Yasushi

    TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C   79 ( 799 ) 845 - 857  2013

     View Summary

    In the life cycle engineering, describing scenarios is considered a good approach to sustainability in manufacturing in terms of clarifying visions of future manufacturing industry. When envisioning sustainable futures, describing &quot;backcasting&quot; scenarios is especially hopeful, because in a backcasting scenario, ideal future visions are firstly developed apart from the present situation. Although many scenario development methods have been proposed, these methods are too abstract, especially have no specific procedure for designing backcasting scenarios. This paper proposes a method for supporting design of backcasting scenarios using logic trees. In this method, logic trees support determining the structure of a backcasting scenario and creating storylines, which are outlines of sub scenarios. The logic tree and the storylines support describing the scenario text. As a case study, we described a backcasting scenario on &quot;breakdown&quot; of Japanese manufacturing in 2050. The result of the case study revealed that the logic tree systematically supports determining the structure of this scenario and generating its storylines. And composing scenario text is successfully supported by detailing the logic tree and the storylines.

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  • Lifecycle scenario design for product end-of-life strategy

    Shinichi Fukushige, Kazuhiro Yamamoto, Yasushi Umeda

    Journal of Remanufacturing   2 ( 1 )  2012.12

     View Summary

    © 2012, Fukushige et al; licensee Springer. This paper proposes a method for supporting the design of product lifecycles. The main approach involves supporting designers in determining a lifecycle strategy by describing lifecycle scenarios at an early stage of lifecycle design. The authors define a representational scheme for the lifecycle scenario and outline a support system based on the idea of the Cognitive Design Process model allowing the designers to examine various possibilities of lifecycle strategy. A number of alternative scenarios are managed by the Truth Maintenance System implemented in this approach. Finally, in order to embody the strategy in the later stages, the system derives requirements for product and process design. This paper outlines the lifecycle scenario of a cellular phone as a case study, which indicates the system's suitability for computer-aided description of scenarios and its facilitation of lifecycle strategy development.

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  • Development of sustainable society scenario simulator toward sustainable manufacturing (3rd Report) - Design support of forecasting scenarios

    Yuji Mizuno, Yusuke Kishita, Haruna Wada, Shinichi Fukushige, Yasushi Umeda

    Seimitsu Kogaku Kaishi/Journal of the Japan Society for Precision Engineering   78 ( 11 ) 1009 - 1015  2012.11

     View Summary

    Developing scenarios is a hopeful approach for drawing visions and pathways of sustainable manufacturing toward sustainable society. Sustainable Society Scenario (3S) Simulator is an integrated design support environment that supports understanding, describing, and analyzing scenarios. This paper proposes a design support method of scenarios in 3S Simulator. Proposed method supports designing scenarios in forecasting manner, in which futures are explored starting from the present. We employ two-leveled causal networks for supporting scenario design in structuring ideas and describing the structured ideas into a scenario, by expressing the structure of the object world of the scenario. In the case study, we verified that the outlines and details of a scenario are deployed from the causal networks. Using 3S Simulator, the relationship between the causal networks and the descriptions of a scenario is clarified. This supports a designer to understand the scenario rationally. As the conclusion, proposed method supports designing scenarios in forecasting manner.

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  • Proposal of consistency management method between product and its life cycle for supporting life cycle design

    Eisuke Kunii, Takeshi Matsuura, Shinichi Fukushige, Yasushi Umeda

    International Journal of Automation Technology   6 ( 3 ) 272 - 277  2012.05

     View Summary

    In order to increase value and reduce environmental loads and resource consumption over the entire product life cycle, a designer should design a product life cycle as well as a product in an integrated manner. In order to support such integrated life cycle design, we are currently developing Life Cycle CAD (LC-CAD) system. Indispensable requirements for LC-CAD system include the following three points: (1) Representing a product and its life cycle in an integrated manner, (2) Managing the consistency of the relationship between a product and its life cycle, and (3) Life cycle evaluation by using the information of a product and its life cycle. This paper focuses on the function (1) and (2), and proposes a method of consistency management between a product and its life cycle. For this purpose, this paper proposes a method for representing a product and its life cycle with defining the relationship between these two models. Then, this paper proposes a management scheme for the consistency of the relationship. We developed a prototype systemand applied it to design of Liquid Cristal Display (LCD) TV as a case study. The result indicates that the relationship between a product and its life cycle is successfully represented and managed, and that a designer can design them in an integrated manner.

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  • Proposal of a methodology for supporting eco-business planning

    Nobuo Nakamura, Kohei Mandai, Shinichi Fukushige, Yasushi Umeda

    International Journal of Automation Technology   6 ( 3 ) 264 - 271  2012.05

     View Summary

    As global environmental issues have become aggravated, "Eco" has become a competitive advantage in business because of consumers' increasing environmental consciousness. However, it is difficult to lead an eco-business to success in both environmental and economic aspects. In order to solve these problems, this paper proposes a methodology that supports ecobusiness planning, in which a design team utilizes the eighteen rules to generate ideas for eco-business based on the investigation of 50 cases of existing ecobusiness, combines these eco-business ideas to generate eco-business model prototypes, and modifies them. This paper also verifies the feasibility of the proposed method through a workshop. The results of the workshop revealed that the method effectively supports especially in generating eco-business ideas by using the eighteen rules, combining ideas with other ideas, and evaluating them from the three perspectives of market attractiveness, company suitability, and environmental consciousness.

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  • Proposal of an integrated design environment for scenario-based lifecycle design

    Shinichi Fukushige, Takeshi Matsuura, Eisuke Kunii, Yasushi Umeda

    Seimitsu Kogaku Kaishi/Journal of the Japan Society for Precision Engineering   78 ( 2 ) 143 - 148  2012.02  [Refereed]

    Authorship:Lead author

     View Summary

    Minimizing environmental loads and costs throughout a product lifecycle requires appropriate lifecycle design. Design of a product lifecycle involves planning lifecycle strategies, evaluating them from various viewpoints and optimizing the overall picture. Product lifecycle strategy can be planned explicitly by describing lifecycle scenarios at an early stage of lifecycle design and the product should be designed to realize the scenario. This paper proposes a design environment for scenario-based lifecycle design. The main approach is to define a representational scheme of a product and its lifecycle in order to integrate them. Our method links a lifecycle model to appropriate product architecture and manages the consistency between them. A case study indicates that the relationship between the lifecycle and the product model is successfully represented on a computer and designers can design a product and its lifecycle in an integrated manner.

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  • Supporting scenario design in planning long-term business strategies based on sustainability scenarios

    Yusuke Kishita, Maki Hirosaki, Yuji Mizuno, Haruna Wada, Shinichi Fukushige, Yasushi Umeda

    Leveraging Technology for a Sustainable World - Proceedings of the 19th CIRP Conference on Life Cycle Engineering     25 - 30  2012

     View Summary

    When companies plan long-term strategies for making their business sustainable, designing scenarios is a promising way for examining various business strategies by drawing various possible situations in the future. This paper proposes a method to support scenario design for planning business strategies. The method employs existing sustainability scenarios, helping describe business environments by reusing descriptions of the sustainability scenarios. A scenario about solar panel business is described using the proposed method. Results illustrate that the method succeeds in describing detailed business environments based on existing sustainability scenarios, and finally, in obtaining several business strategies based on the business environments.

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  • Development of Sustainable Society Scenario Simulator toward Sustainable Manufacturing (4th Report):&mdash;A Method for Drawing Scenario Variants Based on What-if Analysis&mdash;

    KISHITA Yusuke, MIZUNO Yuji, FUKUSHIGE Shinichi, UMEDA Yasushi

    Journal of the Japan Society for Precision Engineering   78 ( 11 ) 985 - 991  2012

     View Summary

    Designing sustainability scenarios is a promising approach to describing visions and transitions of the manufacturing industry targeting a sustainable society. However, computational assistance in designing such scenarios is not sufficiently provided in the current scenario research. This paper proposes a method for drawing scenario variants by executing what-if analysis of existing scenarios in order to explore different possible futures in the scenario design process. To support composing scenario variants, the method defines scenario rationales that should be changed in the process of what-if analysis. Results of a case study involving an existing sustainability scenario show that the method successfully helps draw a new scenario variant by modifying a part of the rationales of the original scenario. Consequently, 82% of the texts of the new scenario are described from the original scenario.

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  • Recyclability evaluation of LCD TVs based on end-of-life scenarios

    Takahiro Mizuno, Eisuke Kunii, Shinichi Fukushige, Yasushi Umeda

    Leveraging Technology for a Sustainable World - Proceedings of the 19th CIRP Conference on Life Cycle Engineering     179 - 183  2012  [Refereed]

    Authorship:Corresponding author

     View Summary

    One of the effective approaches for increasing resource efficiency of products is to improve their recyclability in consideration of their product life cycles at the design stage. To support product design for recycling, this paper proposes recyclability evaluation method by following two steps; (1) to describe an end-of-life scenario of a product, (2) to calculate recyclability rate of the product based on the described end-of-life scenario. As a case study, we evaluated recyclability of three LCD TVs. The result showed that recyclability of a product depends on its end-of-life processes as well as the material constitution of the product.

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  • LC-CAD: A CAD system for life cycle design

    Yasushi Umeda, Shinichi Fukushige, Eisuke Kunii, Yuki Matsuyama

    CIRP Annals - Manufacturing Technology   61 ( 1 ) 175 - 178  2012  [Refereed]

    Authorship:Corresponding author

     View Summary

    In product life cycle design, a designer should design both a product and its life cycle. Although CAD systems for product design are popular, there are no CAD systems for life cycle design. This paper proposes LC-CAD (Life Cycle-CAD) that represents a product and its life cycle in an integrated manner, manages consistency between these two models, and describes changes of a product along its life cycle (e.g., a component is shredded into fragments of metal in a recycling process). LC-CAD also evaluates environmental, economic, and other performance of designed life cycle using life cycle simulation. © 2012 CIRP.

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  • Supporting the Design of Business Strategy Scenarios for Long-Term Business Planning toward a Sustainable Society

    KISHITA Yusuke, MIZUNO Yuji, WADA Haruna, FUKUSHIGE Shinichi

    TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C   78 ( 796 ) 3866 - 3880  2012  [Refereed]

     View Summary

    Manufacturing companies encounter many uncertainties in planning long-term strategies for making their business sustainable. As a decision-making tool in the business world, scenario writing is prevalent for exploring various business strategies by drawing various situations that might unfold in the future. The purpose of this paper is to propose a method for supporting the design of scenarios for planning long-term business strategies. In this method, such scenarios are described using existing sustainability scenarios. The method intends to help companies' strategists describe business environments by reusing and extending descriptions of sustainability scenarios. A scenario about solar panel business is described using the proposed method. The results illustrate that the method succeeds in describing detailed business environments from an existing sustainability scenario, and finally, obtaining several business strategies based on the business environments. In addition, our method clarifies the logical structure of the scenario, thereby enabling to review rationales for deriving those business strategies.

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  • Evaluating risks of copper depletion based on sustainability scenarios

    Yuta Inoue, Yusuke Kishita, Shinichi Fukushige, Hideki Kobayashi, Yasushi Umeda

    Electronics Goes Green 2012+, ECG 2012 - Joint International Conference and Exhibition, Proceedings    2012  [Refereed]

     View Summary

    Various sustainability scenarios visualize images of a sustainable society. For example, the IPCC's scenario aims to describe images of a low-carbon society. These sustainability scenarios often suppose introducing new technologies (e.g., electric vehicles (EVs)) to reduce energy consumption and greenhouse gas emissions. However, the depletion risks of metals are not evaluated in those scenarios. This paper proposes a method to evaluate depletion risks of metals by estimating future metal consumption. We estimate the consumption considering three factors: (i) economic growth, (ii) diffusion of new products (e.g., EVs), and (iii) effect of recycling. As a case study, we take copper as an example metal and estimate copper consumption based on a long-term energy scenario. The results show that, although recycled copper reduces more than 20% of annual consumption, cumulative consumption surpasses the reserve base of copper by 2050. © 2012 Fraunhofer IZM.

  • Describing sustainability scenarios of regional electricity systems: Influences of introducing photovoltaic systems and electric vehicles into electricity networks

    Naoto Kurahashi, Yusuke Kishita, Kazuhiro Kobayashi, Yohei Yamaguchi, Shinichi Fukushige, Yasushi Umeda

    Electronics Goes Green 2012+, ECG 2012 - Joint International Conference and Exhibition, Proceedings    2012  [Refereed]

     View Summary

    A variety of new products, such as photovoltaic (PV) systems and electric vehicles (EVs), have been introduced to electricity systems targeting an energy-saving and low-carbon society. However, it is still unclear that, when these energy-saving products will be disseminated in our society, the dissemination will influence future electricity systems. To explore how future electricity systems might unfold, this paper describes scenarios by analyzing the influence of the diffusion of energy-saving products; e.g., PV systems and EVs. We compose the scenarios of regional electricity networks by combining scenario texts and simulations. The simulations estimate products diffusion and electricity demand based on the assumptions described in the scenario texts. We analyze the influences of introducing especially PV systems and EVs into electricity networks using the simulation models that we developed. As a case study, we described the scenario of a suburb city in Osaka, Japan. © 2012 Fraunhofer IZM.

  • Proposal of design support method of sustainability scenarios in backcasting manner

    Yuji Mizuno, Yusuke Kishita, Haruna Wada, Kazuhiro Kobayashi, Shinichi Fukushige, Yasushi Umeda

    Proceedings of the ASME Design Engineering Technical Conference   5   767 - 776  2012  [Refereed]

     View Summary

    Describing sustainability scenarios is a hopeful approach for envisioning sustainable future visions of industries. However, describing sustainability scenarios is a difficult task and there is no computational support method. This article proposes a design support method of sustainability scenarios in a backcasting manner, which means thinking backward from targeted futures. For the design support method, we propose the following two methods;(i) a method for supporting backward thinking and constructing future visions using a logic tree and (ii) a method for drawing transition paths based on the logic tree. As a case study, we designed "Sustainable manufacturing scenario,"which envisions sustainable future visions of manufacturing industries. Through the case study, we identified the effectiveness of the proposed method. The proposed method supports designing the scenario in clarifying the future visions, drawing the transition paths, and describing them in scenario structurally. © 2012 by ASME.

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  • Estimation of long-term copper demand based on sustainability scenarios: A challenge to sustainable manufacturing industry

    Yusuke Kishita, Yuta Inoue, Shinichi Fukushige, Yasushi Umeda, Hideki Kobayashi

    Proceedings of the ASME Design Engineering Technical Conference   5   743 - 751  2012  [Refereed]

     View Summary

    A variety of sustainability scenarios (e.g., IPCC's Emissions Scenarios) have been described toward a sustainable society. While many of them aim at solving climate change problems and they often assume various low-carbon technologies, the problem is that such scenarios hardly examine their feasibility from the viewpoint of resource depletion. In particular, copper is a critical base metal because introducing low-carbon technologies (e.g., electric vehicles and wind power generators) may induce copper consumption. To assess feasibility of existing sustainability scenarios, this paper proposes a method for estimating long-term copper demand based on those scenarios. Our method proposes an integrated model that evaluates world copper demand from two principal aspects of influencing copper consumption - (1) the building of social infrastructure and (2) new products that might disseminate in the future (e.g., electric vehicles and photovoltaic systems). A case analysis on a long-term energy scenario is carried out. Its results reveal that the cumulative copper consumptions in the world exceed the copper reserved in the earth by 2040. The increase in copper consumptions results mainly from world economic growth led by developing countries, while the dissemination of electric vehicles and photovoltaic systems has a minor impact on the consumption increase. © 2012 by ASME.

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  • Proposal of a Methodology for Supporting Generation of New Eco-business Ideas

    Nobuo Nakamura, Kohei Mandai, Shinichi Fukushige, Yasushi Umeda

    Journal of the Japan Society for Precision Engineering   78 ( 2 ) 136 - 142  2012  [Refereed]

     View Summary

    As global environmental issues have become aggravated, &ldquo;Eco&rdquo; become one of competitive advantages in the business because of increasing consumers' environmental consciousness. However, it is difficult to lead eco-business to the success in both of environmental and economic aspects because of three features of eco-business; external diseconomies, unrecognition of environmental value in the market, requirement for restructuring of business model. For solving this problem, it is effective to support finding out Eco-business ideas. The purpose of this study is to propose the methodology that supports generation of eco-business ideas. This paper proposes the methodology, which has 8 steps, such as generation, settling, evaluation, through the investigation of eco-business and makes sure of its effectiveness through workshop.

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  • Supporting the Design of Business Strategy Scenarios for Long-Term Business Planning toward a Sustainable Society

    KISHITA Yusuke, MIZUNO Yuji, WADA Haruna, FUKUSHIGE Shinichi

    TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C   78 ( 796 ) 3866 - 3880  2012  [Refereed]

     View Summary

    Manufacturing companies encounter many uncertainties in planning long-term strategies for making their business sustainable. As a decision-making tool in the business world, scenario writing is prevalent for exploring various business strategies by drawing various situations that might unfold in the future. The purpose of this paper is to propose a method for supporting the design of scenarios for planning long-term business strategies. In this method, such scenarios are described using existing sustainability scenarios. The method intends to help companies&#039; strategists describe business environments by reusing and extending descriptions of sustainability scenarios. A scenario about solar panel business is described using the proposed method. The results illustrate that the method succeeds in describing detailed business environments from an existing sustainability scenario, and finally, obtaining several business strategies based on the business environments. In addition, our method clarifies the logical structure of the scenario, thereby enabling to review rationales for deriving those business strategies.

    DOI CiNii

  • Development of Sustainable Society Scenario Simulator toward Sustainable Manufacturing (3rd Report):&mdash;Design Support of Forecasting Scenarios&mdash;

    Yuji Mizuno, Yusuke Kishita, Haruna Wada, Shinichi Fukushige, Yasushi Umeda

    Journal of the Japan Society for Precision Engineering   78 ( 9 ) 798 - 804  2012  [Refereed]

     View Summary

    Developing scenarios is a hopeful approach for drawing visions and pathways of sustainable manufacturing toward sustainable society. Sustainable Society Scenario (3S) Simulator is an integrated design support environment that supports understanding, describing, and analyzing scenarios. This paper proposes a design support method of scenarios in 3S Simulator. Proposed method supports designing scenarios in forecasting manner, in which futures are explored starting from the present. We employ two-leveled causal networks for supporting scenario design in structuring ideas and describing the structured ideas into a scenario, by expressing the structure of the object world of the scenario. In the case study, we verified that the outlines and details of a scenario are deployed from the causal networks. Using 3S Simulator, the relationship between the causal networks and the descriptions of a scenario is clarified. This supports a designer to understand the scenario rationally. As the conclusion, proposed method supports designing scenarios in forecasting manner.

    DOI CiNii

  • Proposal of a design support method for sustainability scenarios 1st report: Designing forecasting scenarios

    Haruna Wada, Yusuke Kishita, Yuji Mizuno, Maki Hirosaki, Shinichi Fukushige, Yasushi Umeda

    Glocalized Solutions for Sustainability in Manufacturing - Proceedings of the 18th CIRP International Conference on Life Cycle Engineering     189 - 194  2011  [Refereed]

     View Summary

    Although there are many scenario description methods, computational support has not been provided for scenario design. This paper proposes a method for supporting design of forecasting scenarios. This method supports determining storylines, which are key assumptions of sub scenarios, and describing sub scenarios based on the causal network and storyline. As a case study for verifying feasibility of this method, we described a forecasting scenario about changes of automobile industry when electric vehicles are diffused. Results illustrate that the usage of causal networks effectively supports generating storylines. Also, describing scenario texts is supported by detailing causal networks and the storylines.

    DOI

  • Development of CAD system for Life Cycle Scenario-based product design

    Eisuke Kunii, Shinichi Fukushige, Yasushi Umeda

    Glocalized Solutions for Sustainability in Manufacturing - Proceedings of the 18th CIRP International Conference on Life Cycle Engineering     118 - 123  2011  [Refereed]

     View Summary

    Life Cycle Management (LCM) has established as research area to foster sustainability in all fields of action of organizations. To provide an understanding for this broad research area suitable teaching methods are required. This paper presents the concept for a business game based on the Framework for Total Life Cycle Management (TLCM). It enables participators to understand the interdependencies of four different management disciplines: product, production, after sales and end-of-life management. The educational objective is to continuously develop a holistic life cycle strategy. The game requires communication of all actors and reasonable activities towards sustainability. By that prospective managers can understand relationships and interdependencies of TLCM.

    DOI

  • A design support system for scenario-based lifecycle design

    Shinichi Fukushige, Eisuke Kunii, Kazuhiro Yamamoto, Yasushi Umeda

    Proceedings of the ASME Design Engineering Technical Conference   9   919 - 927  2011  [Refereed]

    Authorship:Lead author

     View Summary

    In order to solve global environmental issues, we should construct stable circular product lifecycle systems. For this purpose, lifecycle design plays a crucial role; especially, it is necessary to determine lifecycle strategies at the early stage of lifecycle design. In the current practice of eco-design, for example, a designer increases the disassemblability of a product for recycling, although the product is shredded without disassembling. For avoiding such a situation and realizing stable circular product lifecycle systems, appropriate lifecycle strategies should be determined and implemented by designing both a product and its processes. This paper proposes a method for supporting design of a product lifecycle. The main approach is to support a designer to determine a lifecycle strategy by describing a lifecycle scenario, at early stage of lifecycle design. We define a representational scheme of the lifecycle scenario and develop the support system based on the idea of cognitive design process model so that a designer can examine various possibilities of lifecycle strategy. After this stage of lifecycle design, the product and its lifecycle processes should be designed so as to realize the strategy. In order to embody the strategy in the later stages, the system derives requirements for the product and process design. A case study indicates that the lifecycle scenario is successfully represented on a computer and a designer can easily determine lifecycle strategies by using this system. Copyright © 2011 by ASME.

    DOI

  • Designing sustainable society scenarios using forecasting

    Yuji Mizuno, Yusuke Kishita, Haruna Wada, Maki Hirosaki, Shinichi Fukushige, Yasushi Umeda

    ICED 11 - 18th International Conference on Engineering Design - Impacting Society Through Engineering Design   5   135 - 144  2011  [Refereed]

     View Summary

    Environmental problems such as resource depletion and climate change are the most serious problems for society and industry. In order to deal with such problems, scenario writing is a useful methodology for envisioning ideal future, such as sustainable society. Although describing these scenarios requires a lot of time and a large amount of work, there is no computational support for it. In order to resolve this problem, this paper proposes a design methodology of scenarios based on forecasting approach, which explores future from current situation. In order to realize computational scenario design support, we formalize the design process as four steps; setting problems, constructing causal networks, describing storylines, and describing scenario texts. And we develop Scenario Design Support System for supporting the scenario design process on a computer. For testing the proposed methodology, we designed "Electric Vehicle Diffused Society Scenario" as a case study. In the case study, proposed process and design support methodology were useful for designing a forecasting scenario. Copyright © 2002-2012 The Design Society. All rights reserved.

  • A holistic approach to computer-aided scenario design targeting sustainable manufacturing

    Yusuke Kishita, Yuji Mizuno, Maki Hirosaki, Haruna Wada, Shinichi Fukushige, Yasushi Umeda

    Proceedings of APMS 2010 - International Conference on Advances in Production Management Systems    2010  [Refereed]

     View Summary

    Numerous scenarios have been developed in order to create visions of a sustainable society, such as the IPCC's Scenarios. However, sufficient computational assistance has not been provided for designing scenarios. One critical problem is that it is difficult to understand scenarios rationally since scenarios are written in a text form and their logical structure is unclear. For supporting computer-aided scenario design, this paper presents the concept of Sustainable Society Scenario (3S) Simulator. The key approach is to structure scenarios for computerizing them by representing a scenario structure as a directed graph. Based on this approach, this paper proposes a method for dynamically connecting scenarios with associated simulators for their reuse. A case study illustrates that our method clarifies the logical structure of a scenario, e.g., clarifying rationales for deriving conclusions. Also, the method succeeds in exploring alternative futures by changing assumptions in the scenario.

  • Checklist-based assessment methodology for sustainable design

    Yusuke Kishita, Bi Hong Low, Shinichi Fukushige, Yasushi Umeda, Atsushi Suzuki, Takao Kawabe

    Journal of Mechanical Design, Transactions of the ASME   132 ( 9 ) 0910111 - 0910118  2010  [Refereed]

     View Summary

    The manufacturing industry is faced with a challenge to create products with less environmental impact targeting a sustainable society. To cope with this challenge, sustainable design or ecodesign plays one of the most important roles. Manufacturers often use ecodesign checklists that are intended for obtaining eco-labels, such as Eco Mark in Japan, in order to support design improvements of products in terms of environmental consciousness. Eco-label checklists are, however, insufficient to support designing products rationally because the relationships between individual requirements of checklists and environmental impact are undetermined. This paper proposes a method for supporting assessment for ecodesign by developing a weighted checklist from a conventional eco-label checklist. This weighted checklist assesses the environmental performance of a product based on the potential environmental improvement of each requirement, derived by life cycle simulation. Results of a case study involving a digital duplicator indicate that the proposed method successfully clarifies the requirements that should be improved in the present product. When the design improvements are applied, the assessment of the product's CO2 emissions shows an improvement by 8%. Copyright © 2010 by ASME.

    DOI

  • Development of Sustainable Society Scenario Simulator toward Sustainable Manufacturing (2nd Report):&mdash;Describing Dynamic Scenarios by Connecting Scenarios with Simulators&mdash;

    KISHITA Yusuke, YAMASAKI Yasuhiro, MIZUNO Yuji, FUKUSHIGE Shinichi, UMEDA Yasushi

    Journal of the Japan Society for Precision Engineering   76 ( 6 ) 694 - 699  2010  [Refereed]

     View Summary

    Describing scenarios is a promising approach to draw images of manufacturing industry toward a sustainable society, whereas the images are still vague. Sustainable Society Scenario (3S) Simulator aims to support understanding, describing, and analyzing sustainability scenarios. This paper proposes a method for describing &ldquo;dynamic scenarios&rdquo; by connecting scenarios and their associated simulators. Our approach includes to structuralize scenarios for clarifying the relationship between a scenario and its simulators and to develop a mechanism of exchanging data between them. A case study illustrates that the proposed method succeeds in articulating rationales, described as texts in a scenario, for input data of a simulation. Also, the simulation results are successfully changed by changing simulation assumptions in the original scenario. The case study indicates that, as a result, the method enables to reuse a scenario and its simulator simultaneously.

    DOI CiNii

  • Proposal of a Methodology for Constructing Weighted Checklist Targeting Environmentally Conscious Design

    LOW BiHong, KISHITA Yusuke, FUKUSHIGE Shinichi, UMEDA Yasushi, SUZUKI Atsushi, KAWABE Takao

    Journal of the Japan Society for Precision Engineering   76 ( 11 ) 1288 - 1292  2010  [Refereed]

     View Summary

    Ecodesign plays one of the most important roles in manufacturing sectors towards a sustainable society. As a practical tool of ecodesign, manufactures often use checklists to support product design as well as to obtain eco-label certification. However, current checklists are insufficient due to undetermined effects of individual requirements in the checklists on environmental impact. This paper proposes a method for supporting ecodesign assessment by developing a weighted checklist, where potential environmental improvements in each requirement are derived based on the life cycle simulation. In the case study involving a digital duplicator, the proposed method successfully identified requirements that needed to be improved. When suggested improvements were applied, 8% of total CO2 emissions were estimated to be reduced.

    DOI CiNii

  • Modelling, analysis and risk evaluation of resource circulation in Asia

    Yusuke Kishita, Shinichi Fukushige, Yasushi Umeda, Jun Fujimoto

    International Journal of Environmental Technology and Management   11 ( 4 ) 290 - 318  2009.08  [Refereed]

     View Summary

    Abstract: A considerable amount of resources is exchanged among Japan and other Asian countries. We call it 'global circulation'. Although such circulation currently causes various environmental pollutions, it will become a hopeful measure for resource conservation. For clarifying the conditions for sustainable global circulation, we evaluate several scenarios of the global circulation from the viewpoints of economic and environmental aspects. When modelling the global circulation, we inevitably encounter two types of uncertainty, i.e. unexpected events and insufficient practical data. This article represents such uncertainty as risks and data width. The simulation results indicate that a product reuse scenario is the most promising for the sustainable global circulation. Concerning recycling scenarios, the risks are higher than those of reuse scenarios. This article also points out that the traceability, one of the most crucial elements for constructing the sustainable global circulation, can be measured by the risks.copyright © 2009 inderscience enterprises ltd.

    DOI

  • Evaluation of scenario-based modularization for lifecycle design

    Yasushi Umeda, Shinichi Fukushige, Keita Tonoike

    CIRP Annals - Manufacturing Technology   58 ( 1 ) 1 - 4  2009  [Refereed]

    Authorship:Corresponding author

     View Summary

    Although modular design is a key technique for lifecycle design, effectiveness of modularity on environmental consciousness is not clear. This paper proposes an evaluation method of modular product from the viewpoint of resource efficiency. First, a product is modularized by applying our modularization method based on its lifecycle scenario. Second, the modular structure is evaluated by assuming that each module goes through preferable lifecycle paths (e.g., upgrading, reuse, and closed-loop recycling) designated by the scenario but unmodularized components go through unpreferable paths. This paper also illustrates a case study in order to discuss effectiveness of the proposed method. © 2009 CIRP.

    DOI

  • Proposal of sustainable society scenario simulator

    Yasushi Umeda, Takeshi Nishiyama, Yasuhiro Yamasaki, Yusuke Kishita, Shinichi Fukushige

    CIRP Journal of Manufacturing Science and Technology   1 ( 4 ) 272 - 278  2009  [Refereed]

     View Summary

    Although the life cycle engineering aims at 'sustainability', its image is still unclear. While various scenarios have been proposed for this purpose, their rationality and assumptions are not clearly described because they are just documents referring some simulation results. For analyzing and composing the scenarios, this paper proposes the framework of 'Sustainable Society Scenario (3S) Simulator' and a methodology for structural representation of scenarios. This paper also demonstrates a prototype system and its structural representation of the IPCC scenario. The representation clarified the basic structure of this scenario and highlighted a set of assumptions as the base of this scenario. © 2009 CIRP.

    DOI

  • Checklist-based Assessment Method for Environmentally Conscious Design

    KISHITA Yusuke, LOW Bi Hong, FUKUSHIGE Shinichi, UMEDA Yasushi, SUZUKI Atsushi, KAWABE Takao

    Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21   2009 ( 0 ) 529 - 534  2009  [Refereed]

     View Summary

    Environmentally conscious design or ecodesign is a key methodology to achieve the sustainable society. Manufactures often use ecodesign checklists to improve their products; however, the relationship between individual requirements of checklists and environmental impact is undetermined. This paper proposes a method for assessing ecodesign achievement by developing a weighted checklist from a conventional checklist. The ecodesign achievement is defined as potential environmental improvement, evaluated by the life cycle simulation. An example involving a digital duplicator shows that the proposed method clarifies requirements to be improved. When applying design improvements, the assessment of the product's CO2 emission decreases by 8%.

    DOI CiNii

  • Product modularization and evaluation based on lifecycle scenarios

    Shinichi Fukushige, Keita Tonoike, Yoichiro Inoue, Yasushi Umeda

    Proceedings of the 5th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2009    2009  [Refereed]

     View Summary

    A product's lifecycle can be described explicitly as a lifecycle scenario, and the product should be designed to realize a scenario that minimizes its environmental load over the entire product lifecycle. This paper proposes a method of modular design that links the lifecycle scenario to appropriate product architecture by modularizing components that are suitable for the same life cycle options such as recycling, maintenance, reuse and upgrade. We also propose an index for evaluating and comparing efficiency in resource circulation for modular products derived from various life cycle scenarios.

  • Proposal of an ecodesign assessment methodology by using a weighted checklist

    Yusuke Kishita, Bi Hong Low, Shinichi Fukushige, Yasushi Umeda, Atsushi Suzuki, Takao Kawabe

    Proceedings of the ASME Design Engineering Technical Conference   8 ( PARTS A AND B ) 235 - 243  2009  [Refereed]

     View Summary

    Environmentally conscious design or ecodesign plays one of the most important roles to create products with less environmental impact targeting the sustainable society. Manufactures often use checklists to support design improvements of products and to obtain eco-labels, such as Eco Mark in Japan. Current checklists are, however, insufficient to support designing products rationally because the relationship between the individual requirements of current checklists and environmental impact is undetermined. This paper proposes a method for supporting ecodesign assessment by developing a weighted checklist from a conventional checklist. This weighted checklist calculates ecodesign achievement based on the potential environmental improvement of each requirement, derived by the life cycle simulation. The result of a case study involving a digital duplicator showed the proposed method successfully clarified requirements that should be improved in the present product. When design improvements are applied, the assessment of the product's CO2 emission is improved by 8%. Copyright © 2009 by ASME.

    DOI

  • Scenario based modularization and evaluation for product lifecycle design

    Shinichi Fukushige, Keita Tonoike, Yoichiro Inoue, Yasushi Umeda

    Proceedings of the ASME Design Engineering Technical Conference   8 ( PARTS A AND B ) 303 - 311  2009  [Refereed]

     View Summary

    Minimizing the environmental load and cost throughout the product lifecycle requires appropriate lifecycle design as well as product design. Product lifecycle can be designed easily by describing lifecycle scenario at an early stage and the product should be designed to realize the scenario. This paper proposes a modular design method that links lifecycle scenario to appropriate modular structure by unifying components applicable to the same lifecycle option, such as recycling, maintenance, reuse, and upgrading. Appropriate modular structures may differ with the lifecycle options, meaning that while the modular structure for recycling should be based on the type of material, the structure for upgrading should be based on the lifetime of components. The modules, therefore, can undergo lifecycle processes without disassembly into components. These may lead to easy management of components throughout the lifecycle and increase the efficiency of recovery processes and logistics in resource circulation. We also propose an evaluation method of modular product from the viewpoint of resource efficiency. For the evaluation, we formalize the probability that each module goes through preferable lifecycle paths designated by the scenario in order to represent the advantage of modularization. This paper also illustrates a case study in order to discuss effectiveness of the proposed method. Copyright © 2009 by ASME.

    DOI

  • Structural description method of the sustainable society scenarios for scenario design

    Yuji Mizuno, Yusuke Kishita, Yasuhiro Yamasaki, Shinichi Fukushige, Yasushi Umeda

    Proceedings of ICED 09, the 17th International Conference on Engineering Design   2   475 - 486  2009  [Refereed]

     View Summary

    Today, many scenarios are described for envisioning sustainable society such as the IPCC's Emissions Scenarios. These scenarios often employ simulators to provide a basis for their descriptions. However, existing scenarios do not explicitly describe the relationship between scenario document and simulators, e.g. its simulation conditions. This spoils reusability of scenarios. We propose a scenario design methodology to describe sustainable society scenario efficiently and effectively. We are developing Sustainable Society Scenario (3S) Simulator to support scenario design process. This paper proposes a method for making new scenario variants efficiently by reusing existing scenarios and simulators. In order to realize proposed method, we define a structural description method of scenarios for connecting scenarios with their simulators dynamically and we develop a data managing tools as components of 3S Simulator to modify scenarios by using proposed method. In a case study, scenario structure including simulator is clearly represented and we succeeded in describing new sub scenario easily by reusing existing scenario and simulator.

  • Proposal of a Modular Design Methodology for Product life Cycle Design

    FUKUSHIGE Shinichi, TONOIKE Keita, UMEDA Yasushi, KONDOH Shinsuke

    Journal of the Japan Society for Precision Engineering   75 ( 6 ) 725 - 730  2009  [Refereed]

    Authorship:Lead author

     View Summary

    Modular design is an important elemental technique in life cycle design. Modularity may increase maintainability, upgradability, and so on. Appropriate modular structure differs according to applied life cycle options; e.g., while the modular structure for recycling should be based on material kinds, the structure for upgrading should be based on functions to be obsolete. This paper proposes a modular design methodology that derives modular structures flexibly depending on applied life cycle options by utilizing the attributes of components and geometric model. The components are classified into some groups according to the similarity of attributes and the geometric information is employed to derive a geometrically feasible modular structure within the group. This paper also illustrates the prototype system that implements the proposed method and a case study of a printer.

    DOI CiNii

  • Development of Sustainable Society Scenario Simulator toward Sustainable Manufacturing (1st Report):&mdash;Logical Structure Analysis based on Structural Scenario Description&mdash;

    KISHITA Yusuke, YAMASAKI Yasuhiro, MIZUNO Yuji, FUKUSHIGE Shinichi, UMEDA Yasushi

    Journal of the Japan Society for Precision Engineering   75 ( 8 ) 1029 - 1035  2009  [Refereed]

     View Summary

    A variety of scenarios including the IPCC's Emissions Scenarios have been described toward achieving the sustainable society. Describing such scenarios is a hopeful approach for drawing future images of sustainable manufacturing. However, there exist difficulties in understanding these scenarios rationally since their logical structure is ambiguous. This prevents us from relying on these scenarios and describing new scenarios by using existing scenarios. In order to support understanding, analyzing, and describing scenarios, this paper proposes the concept of Sustainable Society Scenario Simulator (3S Simulator). As the first step, this paper proposes a method for describing scenarios structurally for a rational understanding of scenarios. This method expresses a scenario in four levels; i.e., Scenario, Expression, Word, and Data Levels. Particularly, this paper focuses on Scenario and Expression Levels and formulates the &ldquo;base&rdquo; of a scenario to clarify rationales that logically support its conclusions. The results of a case study involving World Energy Outlook 2004 showed that the proposed method successfully clarifies the logical structure of the scenario and identifies its base of the rationale. In this scenario, it was revealed that many of conclusions are derived beyond logicality since the scenario inevitably contains future predictions.

    DOI CiNii

  • Proposal of a Modular Design Method Based on Life Cycle Scenario and Geometric Information(<Special Issue>18th Design & Systems Conference)

    INOUE Yoichiro, TONOIKE Keita, FUKUSHIGE Shinichi, UMEDA Yasushi

    TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C   75 ( 756 ) 2114 - 2119  2009  [Refereed]

     View Summary

    In order to minimize environmental loads and costs during a whole life cycle of a product, adequate life cycle design as well as product design is indispensable. In life cycle design, the anticipated life cycle of a product can be clarified by describing a life cycle scenario. Modular design is an important elemental technique to link life cycle design to appropriate product architecture, and improves, e.g., maintainability, upgradability, reusability, and recyclability by unifying components applicable to the same life cycle scenario. This paper proposes a modular design method based on various attributes related to a product life cycle scenario; e.g., while the modular structure for recycling is based on material kinds, the structure for reuse is based on lifetime of components. Furthermore, we define an evaluation index for evaluating derived modular structure from the viewpoint of resource efficiency. This paper also illustrates the prototype system that implements the proposed method and a case study of an ink-jet printer.

    DOI CiNii

  • Product modularity for life cycle design

    Yasushi Umeda, Shinichi Fukushige, Keita Tonoike, Shinsuke Kondoh

    CIRP Annals - Manufacturing Technology   57 ( 1 ) 13 - 16  2008  [Refereed]

     View Summary

    Modular design is an important elemental technique in life cycle design for improving, e.g., maintainability, upgradability, reusability, and recyclability. Appropriate modular structure differs according to applied life cycle options; e.g., while the modular structure for recycling should be based on material kinds, the structure for upgrading should be based on functions to be obsolete. This paper proposes a method for determining modular structure by aggregating various attributes related to a product life cycle and evaluating geometric feasibility of modules. This paper also illustrates the prototype system that implements the proposed method and a case study of a printer. © 2008.

    DOI

  • Polygon visibility ordering via Voronoi diagrams

    Shinichi Fukushige, Hiromasa Suzuki

    Visual Computer   23 ( 7 ) 503 - 511  2007.07  [Refereed]

     View Summary

    Visibility determination is one of the oldest problems in computer graphics. The visibility, in terms of back-to-front polygon visibility ordering, is determined by updating a priority list as the viewpoint moves. A new list-priority algorithm, utilizing a property of Voronoi diagrams, is proposed in this paper. The operation is in two phases. First, in a pre-processing phase the scene is divided into Voronoi cells. A sub-list associated with each cell contains references to those polygons that intersect with it. The polygons are assigned a fixed set of view-independent priority orders within the cluster. Last, an interactive phase sorts the clusters according to the depth value of each Voronoi site. The most time-consuming work is performed during the pre-processing phase that only has to be executed once for the scene. Since all the polygons in a cell are pre-computed to obtain the fixed priority order within the cluster, a relatively simple task is left in the interactive phase, which is only to sort the clusters repeatedly when the viewpoint is changed. This method contains performance benefits that make it better shaped than previous BSP based methods. © Springer-Verlag 2007.

    DOI

  • Development of description support system for life cycle scenario

    Ryo Suesada, Yusuke Itamochi, Shinsuke Kondoh, Shinichi Fukushige, Yasushi Umeda

    Advances in Life Cycle Engineering for Sustainable Manufacturing Businesses - Proceedings of the 14th CIRP Conference on Life Cycle Engineering     29 - 34  2007  [Refereed]

     View Summary

    This paper proposes a method for describing product life cycle scenario and a description support system for the life cycle scenario. Our idea is that a designer can determine the life cycle strategy easily by describing the life cycle scenario at the early stage of life cycle design. We define a representational scheme of the life cycle scenario and develop the support system by using the idea of the design rationale. As a result, it is clarified that the life cycle scenario is successfully represented on a computer and a designer can easily determine the life cycle strategy by using this system.

    DOI

  • Design methodology for mass reduction of a mechanical product by extracting minimum structure

    Shinichi Fukushige, Shingo Taniyama, Yasushi Umeda

    LEM 2007 - 4th International Conference on Leading Edge Manufacturing in 21st Century, Proceedings    2007  [Refereed]

     View Summary

    Increasing productivity of resources is a major approach in the framework of sustainability in manufacturing. The manufacturing industry can reduce the consumption of resources and production of waste by applying more efficient design techniques. We focused on simplifying the structure of a product as the key method of design for environment. The removal of redundant components, by extracting the ideal simplified structure, decreases manufacturing costs and, at the same time, increases the resource productivity. We propose a methodology for product simplification that can be applied to general products and developed a product design support system by using information on the geometry and the connectivity of the product's components. A case study based on models of a vacuum cleaner and an inkjet printer showed the effectiveness of the methodology.

  • Voronoi diagram depth sorting for polygon visibility ordering

    Shinichi Fukushige, Hiromasa Suzuki

    Proceedings - GRAPHITE 2006: 4th International Conference on Computer Graphics and Interactive Techniques in Australasia and Southeast Asia     461 - 467  2006  [Refereed]

     View Summary

    Visibility determination is one of the oldest problems in computer graphics. The visibility, in terms of back-to-front polygon visibility ordering, can be determined by updating a priority list as the viewpoint moves. A new list-priority algorithm, utilizing a property of Voronoi diagrams, is proposed in this paper. In the preprocessing phase, the 3D space is divided into Voronoi cells in order to cluster polygons that can be assigned a fixed set of priority orders within the cluster. and during the post-processing phase, the clusters and contained polygons are depth-sorted correctly. The most time-consuming work is undertaken during the pre-processing phase that only has to be executed once for the scene. All the polygons in a cluster are pre-computed to obtain the view independent priority order within the cluster. Thus, a relatively simple task is left in the post-processing phase, which is only to sort the clusters repeatedly when the viewpoint is changed. One reason to explore list-priority algorithm is because they offer flexibility that hardware configuration (such as Z-buffer approach) do not possess. One example is that of rendering with the correct treatment of the translucency effects. Translucency is an important graphics effect that can be used to increase the realism of the rendered scene or to enable more effective visual inspection in visualization.

    DOI

  • Interactive 3D pointing device using mirror reflections

    Shinichi Fukushige, Hiromasa Suzuki

    Proceedings - GRAPHITE 2006: 4th International Conference on Computer Graphics and Interactive Techniques in Australasia and Southeast Asia     231 - 235  2006  [Refereed]

     View Summary

    We propose a system that uses a camera and a mirror to input behaviour of a pointer in 3D space. Using direct and reflection images of the pointer obtained from single directional camera input, the system computes the 3D positions and the normal vector of the mirror simultaneously. Although the system can only input the "relative positions" of the pointer, in terms of 3D locations without scale factor, calibration of the mirror orientation is not needed. Thus, the system presents a very simple and inexpensive way of implementing an interaction device.

    DOI

  • Motion tracking with reflections: 3D pointing device with self-calibrating mirror system

    Shinichi Fukushige, Hiromasa Suzuki

    VISAPP 2006 - Proceedings of the 1st International Conference on Computer Vision Theory and Applications   2   428 - 434  2006  [Refereed]

     View Summary

    We propose a system that uses a camera and a mirror to input behaviour of a pointer in 3D space. Using direct and reflection images of the pointer obtained from single directional camera input, the system computes the 3D positions and the normal vector of the mirror simultaneously. Although the system can only input the "relative positions" of the pointer, in terms of 3D locations without scale factor, calibration of the mirror orientation is not needed. Thus, the system presents a very simple and inexpensive way of implementing an interaction device.

  • Elastick: A vision based interface for designing spatial curves and surfaces

    Hiromasa Suzuki, Shinichi Fukushige

    Proceedings of the ASME Design Engineering Technical Conference   2   1119 - 1124  2001  [Refereed]

     View Summary

    Computer systems are widely used in mechanical design process, but their user interfaces and devices are not sufficient for designers to create sophisticated shapes. Various kinds of 3D input devices are not so useful either in terms of functions and costs. We propose a vision based interface called "Elastick" using an elastic stick and a digital camera which allows a designer to input smooth spatial curve very easily. It does not require any expensive, special devices and environments. The designer bends the stick to form a desired spatial curve. A digital camera is used to take an image of the stick, from which a spatial curve is reconstructed. A method developed by Pentland(PENTLAND, 1989) is used to reconstruct a spatial curve from a single image. In this paper, methods and algorithms used for Elastick are described and its application for generating mesh models are demonstrated.

▼display all

Misc

  • エージェントベースドモデルとライフサイクルモデルのハイブリッド化によるライドシェアリングの環境負荷評価

    白樫 良尚, 村田 秀則, 福重 真一, 小林 英樹

    精密工学会学術講演会講演論文集   2020 ( 0 ) 331 - 332  2020

     View Summary

    <p>自動車シェアリングは環境負荷を減少させる手段として注目されている.これまでの自動車シェアリングを考慮したライフサイクル評価では,環境負荷は使用段階の走行距離に大きく依存することが示されている.しかし,シェアリング車使用時の挙動変化の詳細なモデル化は困難である.本稿では,エージェントベースドモデルとライフサイクルモデルをハイブリッド化し,自動車挙動を考慮したライドシェアリングの環境負荷を評価する.</p>

    DOI CiNii

  • リバースイノベーションのための製品設計手法の提案

    岡田 大知, 村田 秀則, 福重 真一, 小林 英樹

    精密工学会学術講演会講演論文集   2020 ( 0 ) 321 - 322  2020

     View Summary

    <p>途上国で生まれたイノベーションが先進国で展開されることをリバースイノベーションという.本稿では,途上国の既存製品をもとにした先進国での新製品設計手法を提案する.途上国特有の状況に基づいて先進国のユーザーセグメントを設定し,先進国特有の要求を加味して再設計を行う.ケーススタディとして,ベトナムのてこクランク機構を用いた三輪車いすを日本の特定ユーザー向けに再設計した.</p>

    DOI CiNii

  • A study of life cycle simulation of a system consisting of electric vehicle and home storage battery

    ITAOKA Kosuke, MURATA Hidenori, FUKUSHIGE Shinichi, KOBAYASHI Hideki

    The Proceedings of Design & Systems Conference   2019 ( 0 ) 1311 - 1311  2019

     View Summary

    <p>With the background of regional environmental regulations and improvement of battery technology, the popularization of electric vehicles is advancing. On the other hand, the new business model for the utilization of the battery of the electric vehicle such as battery reuse of the electric vehicle and demand substitution for the battery has been actualized. The purpose of this study is to develop a life cycle simulation model considering reuse from electric vehicles to home storage batteries and demand substitution between electric vehicles and home storage batteries. The rule for controlling reuse and demand substitution of the battery was embedded in the system, and the behavior of the rules was confirmed through the scenario evaluation.</p>

    DOI CiNii

  • リユース対象部品分離のためのアセンブリモデルの分割線設計手法

    道川 隆士, 久保山 淳平, 福重 真一, 小林 英樹

    大会学術講演論文集     70 - 73  2019

    CiNii

  • 自動運転普及シナリオのライフサイクルシミュレーション

    井川 雅貴, 村田 秀則, 福重 真一, 小林 英樹

    精密工学会学術講演会講演論文集   2019 ( 0 ) 591 - 592  2019

     View Summary

    <p>自動運転車は機能レベルに基づいて分類されており、部分自動運転、高度自動運転、完全自動運転と段階的な市場化が見込まれる。自動運転車の機能レベルの変化はセンサ類の構成、燃費、事故率など車の製造、使用、廃棄プロセスに影響を及ぼすと考えられる。本研究では、個人所有車における各機能レベルの自動運転車の普及シナリオを基に、車のライフサイクル全体での自動運転車の環境負荷評価を行った。</p>

    DOI CiNii

  • 生活圏アプローチに基づく仮想現実環境を用いた設計評価手法の提案

    渡邊 悠悟, 福重 真一, 小林 英樹

    精密工学会学術講演会講演論文集   2019 ( 0 ) 603 - 604  2019

     View Summary

    <p>持続可能な消費と生産の実現のためには,生産者側による環境負荷の低減だけでなく,消費者の充足性も考慮した製品開発が求められている.本研究では,製品の設計改善案を基本ニーズ充足の観点から評価する手法を提案する.仮想現実環境を用いて製品の使用環境を計算機内に再現し,充足性を表す感性語を用いて評価を行う.事例検証では,ベトナムで使用されている洗濯機の設計変更に対して,現地ユーザによる評価を行った.</p>

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  • Preface

    Yusuke Kishita, Yutaka Ohtake, Shinichi Fukushige, Takashi Maekawa

    Journal of Advanced Mechanical Design, Systems and Manufacturing   13 ( 5 ) 1  2019

    DOI

  • Needs-based workshops in Vietnam and Japan for Sustainable Consumption and Production

    Yoshinori Sumimura, Shota Arai, P. Hung Do, Hideki Kobayashi, Hidenori Murata, Shinichi Fukushige

    Proc. of the 13th International Conference on EcoBalance (EcoBalance2018)    2018

    Research paper, summary (international conference)  

  • Development of a data-assimilation method for life cycle simulation

    Fukushige Shinichi, Kanoo Akio, Kobayashi Hideki

    The Proceedings of Manufacturing Systems Division Conference   2018 ( 0 ) 409 - 409  2018

     View Summary

    <p>This paper describes a data assimilation (DA) method for model state parameters in lifecycle simulation (LCS). DA is a self-adjustment method to decrease differences between a simulation and observed data from an actual-system by conforming the model parameters to the observations at appropriate time intervals. The proposed method applies DA to LCS for supporting product lifecycle management in terms material flow in the lifecycle. A case study on a lifecycle of a photovoltaic panel reuse business shows that the DA mechanism successfully merge observed data into material flow in a LCS model, and sequentially revise the simulation estimations.</p>

    DOI CiNii

  • ライフサイクルシミュレーションによる自動車のシェアリングの環境負荷評価

    村田 秀則, 川口 太郎, 福重 真一, 小林 英樹

    精密工学会学術講演会講演論文集   2018 ( 0 ) 791 - 792  2018

     View Summary

    <p>カーシェアリングが世界中で展開されており、環境的・経済的観点からも注目されている。特に、自動車走行距離、自動車保有台数、CO2の削減に効果があると言われているが、これらは車の製造や使用といったプロセスのみに注目しており、ライフサイクル全体での環境負荷の評価が課題となっている。本研究では、製造、使用、廃棄を含む、自動車のライフサイクル全体でのカーシェアリングの環境負荷の評価を行った。</p>

    DOI CiNii

  • An Estimation Method for the State of Processes in Lifecycle Simulation

    KANO Akio, FUKUSHIGE Shinichi, KOBAYASHI Hideki

    The Proceedings of Design & Systems Conference   2018 ( 0 ) 2211 - 2211  2018

     View Summary

    This paper describes a method for estimating the state of processes in lifecycle simulation (LCS). The proposed method applies data assimilation (DA) mechanisms to LCS in terms of material flow in the lifecycle for supporting product lifecycle management. DA is a self-adjustment method to decrease differences between a simulation and observed data from an actual system by conforming the model parameters to the observations at appropriate intervals. In the proposed method, the state of unobserved processes is estimated based on limited data of observed processes. A case study on a lifecycle of a photovoltaic panel reuse business shows that the DA mechanism successfully merges observed data into material flow in an LCS model, and sequentially revises the simulation estimations.

    DOI CiNii

  • Scenario Analysis of Car Sharing Service based on Life Cycle Simulation

    KAWAGUCHI Taro, MURATA Hidenori, FUKUSHIGE Shinichi, KOBAYASHI Hideki

    The Proceedings of Design & Systems Conference   2018 ( 0 ) 2214 - 2214  2018

     View Summary

    Car and ride sharing services are diffusing in recent years. However, there are few studies to quantify the environmental and economic aspects of these sharing services from a viewpoint of the whole product life cycle. This study analyzes the environmental effects of the transition from ownership to sharing services quantitatively using life cycle simulation. The following three steps were carried out: 1) Modeling the causal relationship between variables in the business models of ownership and sharing services, 2)Developing a life cycle simulation model of gasoline vehicles based on the causal relationship, and 3) Analyzing the transition scenarios. As the result, it is found that the environmental load decreases with the diffusion of sharing services.

    DOI CiNii

  • Evaluation of Locally-oriented Product Design in a Virtual Walkthrough Environment Composed of Omni-directional Images

    WATANABE Yugo, MIYATA Rieko, FUKUSHIGE Shinichi, KOBAYASHI Hideki

    The Proceedings of Design & Systems Conference   2017 ( 0 ) 1211 - 1211  2017

     View Summary

    Manufactures in developed countries have made efforts on sustainable global production such as the development of eco-products for developing countries. However, industrial products designed in developed countries are not always acceptable for developing countries. One of the reasons is differences in culture, social contexts and lifestyles between them. It is important to understand such local information and to reflect it in product design. The authors has proposed &ldquo;locally-oriented design&rdquo; as a design methodology focusing on local specific needs and constraints. In order to support the process of the locally-oriented product design, this paper proposes a virtualized reality environment in which a designer evaluates the design from a holistic viewpoint including the local information of the area. This quasi-realistic environment composed of omni-directional images captured from multiple viewpoints in a real world where the target product is installed and used. The designer can move and look around freely in the immersive environment through a head-mounted display, and evaluate the design of products based on operational burden of users. The effectiveness of the system is demonstrated on a washing machine installed in a house of Vietnam in a case study.

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  • ライフサイクルシミュレーションにおける異種製品間の相互作用抽出支援

    川上 和音, 福重 真一, 小林 英樹

    精密工学会学術講演会講演論文集   2017 ( 0 ) 909 - 910  2017

     View Summary

    Life cycle simulation(LCS)は製品ライフサイクルを通じた資源フローを評価するための有効な手法である.しかしながら,従来のLCSは製品がライフサイクルを通じて相互作用を持つ場合を十分に考慮できていない.本研究では,相互作用を抽出する方法として,製品が持つ機能に注目した.機能に基づいた製品の類似性評価によって,製品間に生じ得る相互作用を抽出する方法を提案する.

    DOI CiNii

  • 地域指向デザイン評価のための仮想化現実環境の構築

    宮田 理恵子, 福重 真一, 小林 英樹

    精密工学会学術講演会講演論文集   2017 ( 0 ) 903 - 904  2017

     View Summary

    本研究では,地域性を考慮した製品のデザイン評価を支援するために,製品が実際に使用されている現実の空間を複数の視点から撮影した全天球画像を用いて自由な視点移動が可能な仮想化現実環境を構築する.この擬似的な3次元空間内において製品の仮想的なデザイン変更を行い,これを生活者の視点に基づいて評価する手法を提案する.ベトナムの一般家庭で撮影した画像から仮想化現実空間を構築し,本手法の有効性を検証した.

    DOI CiNii

  • 付加製造技術が普及した社会における資源循環シナリオの環境評価

    福重 真一, 八島 雅史, 小林 英樹

    精密工学会学術講演会講演論文集   2017 ( 0 ) 157 - 158  2017

     View Summary

    Additive Manufacturingに代表されるデジタルファブリケーション技術の進展に加え,個人による設計を可能にするCADシステムや,設計情報の共有サービスといった,小規模分散型の設計・生産を実現するための環境が整いつつある.本研究では,このような分散化・多様化した生産形態が普及した社会における様々な資源循環のシナリオを描き,その環境負荷をライフサイクルシミュレーションによって評価する.

    DOI CiNii

  • Preface for the special issue of 2016 Asian Conference on Design and Digital Engineering (ACDDE2016)

    Yutaka Nomaguchi, Shinichi Fukushige, Hiroaki Date, Takashi Michikawa, Yutaka Ohtake, Nobuyuki Umezu

    Journal of Advanced Mechanical Design, Systems and Manufacturing   11 ( 4 )  2017

    DOI

  • 2D01 Design Engineering PBL in Postgraduate Education for All-round Type Experts

    FUKUSHIGE Shinichi, NOMAGUCHI Yutaka, ITOH Hiroyuki, KANEMATSU Yasuo

    Proceedings of Annual Conference of Japanese Society for Engineering Education   2016 ( 0 ) 278 - 279  2016

    DOI CiNii

  • Editable Reality System for Improvement Design Based on Real Products

    FUKUSHIGE Shinichi, KOBAYASHI Hideki

    The Proceedings of Design & Systems Conference   2016 ( 0 ) 3104 - 3104  2016

     View Summary

    <p>This paper proposes a computer-aided style design for industrial products in an immersive design space named Editable Reality (ER). The ER system "virtualizes" real objects by using 3D reconstruction technique, and enables to edit the geometry of the virtualized objects interactively by using 3D modeling method. We developed a prototype of the ER system by integrating two sub-systems of solid modeling based on 3D-CAD and visualization based on mixed reality. ER provides a quasi-realistic design environment in which a designer feels as if he or she manipulates the geometry and location of real products in the real world through a video see-through type head mounted display.</p>

    DOI CiNii

  • Environmental Load Evaluation of Automobile Manufacturing Process Using Additive Manufacturing

    Murai Yu, Fukushige Shinichi, Kobayashi Hideki

    The Proceedings of Design & Systems Conference   2016 ( 0 ) 2112 - 2112  2016

     View Summary

    <p>Additive manufacturing (AM) is a process of making three-dimensional solid objects from a digital model by adding layer-upon-layer of materials. Although AM is gaining growing interest from industry, the environmental effect of introducing the technology into current manufacturing processes has not been investigated. This paper evaluates the environmental load of AM process in automobile manufacturing and compares it with that of conventional processes such as metal stamping and casting. The result of the comparison shows that the environmental load of AM heavily depends on the type of modules manufactured. While main-body modules are suitable for other manufacturing processes such as stamping than the current AM technology, casting can be alternated by AM in terms of CO2 emission.</p>

    DOI CiNii

  • A Study on Visualization of Design Information for Locally-oriented Design

    Sugita Yuya, Fukusige Shinichi, Kobayashi Hideki

    The Proceedings of Design & Systems Conference   2016 ( 0 ) 2201 - 2201  2016

     View Summary

    <p>In recent years, environmental issues are becoming more important not only in developed countries but also in developing countries. One of the practical approaches for developing countries is to introduce eco-products and eco-technologies used in developed countries. However, they are not always acceptable due to differences of social, economic and cultural contexts between countries. Relationships among product function-structure, product life cycle, consumer needs and local constraints are very complicated depending on the contexts. It is necessary to clearly understand how local specific needs and constraints are related with product function-structure. The authors have proposed a methodology consisting of reverse engineering, field observation and an extended function-structure analysis. An extended function-structure map (EFSM) represents relationship among local specific needs, local constraints, product function-structure map. The aim of this study is to develop a prototype system for visualizing design information for locally-oriented design. This system aids users in understanding relationship among product specifications and local information by displaying a chain of elements of the EFSM which are related with local information. In order to validate this system, the authors show a case study on home electric appliances in Vietnam and Japan. A result of the case study indicates that this prototype system is useful to support design of a locally-oriented sustainable product.</p>

    DOI CiNii

  • Potential impact analysis of innovative manufacturing technology form the environmental viewpoint

    Kondoh Shinsuke, Kishita Yusuke, Komoto Hitoshi, Fukushige Shinichi, Tateno Toshitake

    Proceedings of JSPE Semestrial Meeting   2016 ( 0 ) 449 - 450  2016

    DOI CiNii

  • データ同化型ライフサイクルシミュレーション手法の提案

    西岡 昌輝, 松山 祐樹, 福重 真一, 小林 英樹

    精密工学会学術講演会講演論文集   2016 ( 0 ) 463 - 464  2016

     View Summary

    これまでライフサイクルシミュレーション(LCS)は設計段階で用いられていたため,LCSの計算結果と運用段階における実データの間には差が生じ,製品LCが運用段階において設計時とは異なった挙動をとるという問題が生じた.そこで,LCSの計算結果と運用段階に取得できる実データとの差を小さくするための手法として,データ同化型LCS手法の構築を本研究の目的とする.本手法は,LCSにデータ同化の考えを適用することで構築する.

    DOI CiNii

  • 1A01 The practice of design thinking through manufacturing by interdisciplinary groups of students

    TAKENO Yusuke, KOBAYASHI Yuki, KUSHIDA Kana, FUKUSHIGE Shinichi, NOMAGUCHI Yutaka

    Proceedings of Annual Conference of Japanese Society for Engineering Education   2016 ( 0 ) 2 - 3  2016

    DOI CiNii

  • Preface for the special issue of 2015 Asian Conference on Design and Digital Engineering (ACDDE2015)

    Yutaka Nomaguchi, Shinichi Fukushige, Takashi Michikawa, Yutaka Ohtake

    Journal of Advanced Mechanical Design, Systems and Manufacturing   10 ( 8 )  2016

    DOI

  • Life Cycle Engineering&mdash;Current Status and the Future&mdash;

    FUKUSHIGE Shinichi

    Journal of the Japan Society for Precision Engineering   82 ( 10 ) 851 - 855  2016

    Book review, literature introduction, etc.  

    DOI CiNii

  • A Study on Optimum Circulation Period Based on CO2 Emission

    Kintoki Naoya, Mizuno Yuji, Umeda Yasushi, Fukushige Shinichi

    Proceedings of JSPE Semestrial Meeting   2015 ( 0 ) 107 - 108  2015

    DOI CiNii

  • 外部環境の不確実性を考慮した製品ライフサイクル設計のためのマッシブシミュレーションシステムの提案

    佐藤 俊明, 福重 真一, 梅田 靖

    精密工学会学術講演会講演論文集   2015 ( 0 ) 99 - 100  2015

     View Summary

    製品のライフサイクルは,製品の製造から回収・再生・廃棄に至るまでの比較的長いタイムスケールを持つ.従って,ライフサイクルを設計する上では将来の様々な不確実性を考慮しなければならない.本研究ではライフサイクルを通じた外部環境の変化を網羅的にシミュレーションすることで,設計する製品ライフサイクルの成立条件を明らかにし,不確実な環境に対してロバストな戦略の策定を支援するための手法を提案する.

    DOI CiNii

  • 1213 A Study on Optimum Circulation Period of Products

    UMEDA Yasushi, MIZUNO Yuji, KINTOKI Naoya, FUKUSHIGE Shinichi

    The Proceedings of Design & Systems Conference   2015 ( 0 ) _1213 - 1_-_1213-9_  2015

     View Summary

    Longer usage of products does not always result in better environmental performance. In the case of products that use energy in their use phase, early replacement of old products with new energy efficient products may contribute to the reduction of CO2 emission. In order to find out optimal circulation period, our previous study formalized optimum circulation period of the products in terms of CO2 emission. It also calculated the optimal circulation periods of air conditioner, refrigerator, CRT TV, and gasoline vehicle, soled in 1991-2000 in Japan. In order to evaluate recent advances in energy-saving products, this paper calculates optimal circulation periods of air conditioner, refrigerator, LCD TV, gasoline vehicle, and hybrid electric vehicle, sold in 2004-2013 in Japan. The comparison clarified energy efficiency increases in all products; especially, in air conditioner and refrigerator, and the optimal circulation periods in air conditioner and refrigerator became longer as a result of saturation in the improvement of energy efficiency. The proposed method succeeded in evaluating the transition from CRT TV to LCD TV and gasoline vehicle to hybrid electric vehicle. Finally, this paper discusses advantages and limitations of the proposed method and potential of application.

    DOI CiNii

  • Preface for the special issue of 2014 Asian Conference on Design and Digital Engineering (ACDDE2014)

    Yutaka Nomaguchi, Shinichi Fukushige

    Journal of Advanced Mechanical Design, Systems and Manufacturing   9 ( 4 )  2015

    DOI

  • Editable Reality System for Computer-Aided Product Design Based on Real Objects

    FUKUSHIGE Shinichi, NAKATANI Mitsunobu, HONGCHENG Sun

    Technical report of IEICE. Multimedia and virtual environment   114 ( 114 ) 109 - 110  2014.06

     View Summary

    This paper proposes Editable Reality (ER) system for the computer-aided style-design of industrial products. The ER system virtualizes real objects using 3D reconstruction technique and enables to edit the geometry of the objects interactively in Mixed Reality (MR) environment. We developed a prototype of the ER system by integrating two sub-systems for 3D scanning and manipulating the virtualized real objects based on MR technology. It provides a design space in which designers can change the 3D shape and location of substantial products in the real world as well as virtual 3D objects through a video see-through type display.

    CiNii

  • Integration of DfXs by means of a product life cycle model

    Nagahara Kotaro, Fukushige Shinichi, Umeda Yasushi

    Proceedings of JSPE Semestrial Meeting   2014 ( 0 ) 527 - 528  2014

    DOI CiNii

  • Proposal of a Design Method for Dismantling Products with Split-Lines(2nd Report):Determination of the location of split-lines by using the geometric model of a product

    Shiraishi Yumi, Miyaji Naoya, Fukushige Shinichi, Umeda Yasushi

    Proceedings of JSPE Semestrial Meeting   2014 ( 0 ) 525 - 526  2014

    DOI CiNii

  • A Proposal to industrial structure analysis method based on Input-Output tables for Sustainable Society Scenarios

    Mizuno Yuji, Kishita Yusuke, Fukushige Shinichi, Umeda Yasushi

    Proceedings of JSPE Semestrial Meeting   2014 ( 0 ) 93 - 94  2014

    DOI CiNii

  • ライフサイクル戦略の策定とその製品設計への展開を支援するCADシステムの開発(第7報):ライフサイクル-CADを用いたライフサイクルシミュレーションモデルの作成支援手法

    松本 拓也, 松山 祐樹, 福重 真一, 梅田 靖

    精密工学会学術講演会講演論文集   2014 ( 0 ) 95 - 96  2014

     View Summary

    製品ライフサイクル(LC)設計では、問題設定、解候補の導出、解候補の評価、決定のサイクルを円滑に回して設計解を導出する。前報までで提案した製品LCモデルを用いてLCを評価する場合、LCシミュレーションを実行するための計算式の記述が必要であり、この作業がLC設計サイクルの円滑な実施を阻害する。本報ではLCプロセスの接続関係をパターン化し、物や情報の流れに基づいて計算式の記述を支援する手法を提案する。

    DOI CiNii

  • Proposal of a Modeling Method for a Product Life Cycle with a Model for Individual Products

    Matsuyama Yuki, Nishioka Masaki, Fukushige Shinichi, Umeda Yasushi

    Proceedings of JSPE Semestrial Meeting   2014 ( 0 ) 97 - 98  2014

    DOI CiNii

  • 3108 Scenario Analysis of the Electricity Demand of the Residential Sector Based on the Diffusion of Energy-saving and -generating Products

    KISHITA Yusuke, IWAI Naoki, MIZUNO Yuji, FUKUSHIGE Shinichi, UMEDA Yasushi, YAMAGUCHI Yohei, SHIMODA Yoshiyuki

    The Proceedings of Design & Systems Conference   2014 ( 0 ) _3108 - 1_-_3108-10_  2014

     View Summary

    A variety of energy-saving and -generating products, such as photovoltaics and electric vehicles, are being diffused to reduce electricity demand in residential sectors. When one attempts to understand changes in electricity demand in the future, the problem is the existence of numerous unpredictable factors (e.g., peoples' lifestyle and national energy policy) associated with the diffusion of such products. This paper takes a scenario approach to analyzing the impacts of the product diffusion on residential electricty demand under different social circumstances. For the analysis, two simulation models are employed; i.e., (i) a model to estimate the diffusion of products based on consumers' preferences and (ii) a model to estimate electricity demand in residential sectors given the resulting product diffusion. A case study of scenario analysis of the electricity demand in the residential sector in Toyonaka City, Osaka, Japan in 2030 is carried out. The results reveal that the net electricity demand in the city in 2030 is decreased 20-39% from the 2012 level depending on scenarios, where demographic changes and PV diffusion are among critical factors.

    DOI CiNii

  • 2114 Proposal of a Design Method for Dismantling with Split-Lines (2nd Report) : Determination of the location of split-lines based on interference region

    MIYAJI Naoya, SHIRAISHI Yumi, FUKUSHIGE Shinichi, UMEDA Yasushi

    The Proceedings of Design & Systems Conference   2014 ( 0 ) _2114 - 1_-_2114-10_  2014

     View Summary

    An important process for the reuse and recycling of end-of-life products is their disassembly. In general, manual disassembly is a labor intensive and costly process. Especially, removing fasteners takes time and cost. This paper proposes a design method for the disassembly of products with split-lines, which enable to destruct a poduct into desired shapes like pull tabs of cans and caps of PET bottles. This method supports a designer to add split-lines to the products in the design phase in order to extract a target component. Especially, this paper proposes a method for determining the location of split-lines by detecting interference regions between components. A case study shows that the dismantling of a LCD TV with split-lines reduces the number of manual operations needed for extracting a target component.

    DOI CiNii

  • 406 Toward Constructing Resource-circulating Systems by Digital Fabrication

    Tsuda Kazutoshi, Fukushige Shinichi

    Manufacturing Systems Division Conference   2013   65 - 66  2013.03

     View Summary

    Digital fabrication is a process that joins physical products (consists of atoms) with computational models (consists of bits) through the use of leading-edge technologies for self-distributed manufacturing system. Recently, as the enablers of this process, a number of machines/tools, softwares, and online/onsite communities have been developed. These technologies encourage individuals to become makers, and diversify the landscape of the manufacturing systems. In this paper, we discuss the effects of the digital fabrication on the manufacturing systems, from the contexts of personal/social fabrication, and entrepreneurship. This paper also provides a viewpoint toward constructing resource-circulating systems through the digital fabrication.

    CiNii

  • 2305 Proposal of Design Support Method for Multi Generational Product Life Cycles

    MATSUYAMA Yuki, MATSUNO Tomohiko, FUKUSHIGE Shinichi, UMEDA Yasushi

    The Proceedings of Design & Systems Conference   2013 ( 0 ) _2305 - 1_-_2305-8_  2013

     View Summary

    Life cycle design is a promising approach to minimize environmental load and resource consumption throughout the entire product life cycle. One of the main design targets in life cycle design is "the balance of resource circulation," which is a critical issue about quality and quantity of products, components, and other resources in the life cycle especially for solving how to utilize resources of products. While designing products and their life cycles across multiple generations has a wider range of potential to utilize the resources effectively, such multi-generational design makes it more critical and difficult to solve the circulation balance than designing single product life cycle. The objective of this research is to propose a support method for designing balance of resource circulation across multi-generational product life cycles. For this purpose, this paper proposes representational scheme for multi-generational product life cycles. This scheme consists of four models. Two models represent design information of multi-generational products and their life cycle flows, respectively. Based on these models, the other models represent state of products and their components through their life cycles and their amount distribution in each life cycle process. This method employs life cycle simulation technique to estimate their state and amount.

    DOI CiNii

  • 2303 Proposal of a Design Support Method of Scenarios for Sustainability

    MIZUNO Yuji, KISHITA Yusuke, FUKUSHIGE Shinichi, UMEDA Yasushi

    The Proceedings of Design & Systems Conference   2013 ( 0 ) _2303 - 1_-_2303-10_  2013

     View Summary

    Drawing images of sustainable manufacturing is a highly important problem for manufacturing industry. For this problem, "scenario development" is seen as an effective means In scenario development, the developers consider several future visions and transition paths qualitatively and quantitatively. In spite of effectiveness of scenario development, it is difficult and exhaustive task. In order to tackle this problem, referring the ideas of design engineering, we propose a new concept of "scenario design" and develop a scenario design support method. We defined the scenario design as a set of procedures for developing a scenario grouped into plotting, describing, and evaluating. Based on this concept, we proposed a computable scenario model and proposed a scenario design process. The proposed model includes sub models expressing intermediate states between the motivation for developing scenario and a documented scenario. The proposed design process includes four steps in which the scenario is designed in stepwise manner. As an implementation, we proposed a backcasting scenario design support method and developed backcasting scenario design support system. As a case study, using proposed method and support system, we designed Sustainable Manufacturing Scenario, in which economically and environmentally sustainable futures of Japanese manufacturing industry is envisioned. Through the case study, the effectiveness of the proposed design method and support system is verified.

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  • 2304 Scenario Writing on Dissemination of Fuel Cell Cogeneration Systems

    KISHITA Yusuke, NAKAMURA Yasuaki, KEGASA Akeshi, HISAZUMI Yoshinori, HORI Tsukasa, FUKUSHIGE Shinichi, UMEDA Yasushi, WSKABAYASHI Tsutomu

    The Proceedings of Design & Systems Conference   2013 ( 0 ) _2304 - 1_-_2304-10_  2013

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    Fuel cell cogeneration is a promising technology of energy systems in pursuit of a sustainable society. However, it is unpredictable how many fuel cell cogeneration systems will be diffused in a region since there are many future uncertainties, such as people's lifestyles and national energy policies. To tackle with this problem, this paper describes scenarios to analyze the diffusion of fuel cell cogeneration systems for apartment buildings. We develop a simulation model for estimating the diffusion of residential energy systems, in which conjoint analysis is undertaken in order to analyze consumers' preferences. In a case study, several scenarios are written for estimating the diffusion of fuel cell cogeneration systems, where the region of interest is apartment buildings in Kansai Area, Japan from 2013-2030 The scenarios described in the case study differ in terms of nuclear energy policies. The results show that the number of fuel cell cogeneration systems in 2030 reaches 99-200 thousand depending on national energy policies.

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  • 2308 Describing Scenarios of Regional Electricity Demand in the Residential and Commercial Sectors

    IWSI Naoki, KURAHASHI Naoto, KISHITA Yusuke, YAMAGUCHI Yohei, SHIMODA Yoshiyuki, FUKUSHIGE Shinichi, UMEDA Yasushi

    The Proceedings of Design & Systems Conference   2013 ( 0 ) _2308 - 1_-_2308-10_  2013

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    For pursing a low-carbon society, a variety of new products, such as photovoltaic (PV) systems and clean energy vehicles (CEVs), have been introduced to electricity networks. While the dissemination of such energy-saving products will affect electricity networks, it is difficult to predict to what extent those products will be disseminated in our society. To explore how future electricity networks might unfold, this paper describes future scenarios of regional electricity networks, focusing on the residential and commercial sectors. For developing these scenarios we develop simulation models that estimate the diffusion of PV systems and CEVs, regional electricity demand, and the effects of peak-cut of electric load using electric vehicles as storage batteries, respectively. As a case study, several scenarios of regional electricity networks in Toyonaka City, Osaka, Japan in 2030 are described. The simulation results show that the peak of electric load in the residential and commercial sectors can be reduced to 68-70% by the electricity management.

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  • Development of CAD System for Supporting the Determination of the Life Cycle Strategy and the Adoption to the Product Design (6th Report):Life Cycle Design Support Method for Increasing Recyclability of a Product

    Matsuyama Yuki, Mizuno Takahiro, Fukushige Shinichi, Umeda Yasushi

    Proceedings of JSPE Semestrial Meeting   2013 ( 0 ) 409 - 410  2013

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  • エコビジネス・プランニング支援手法開発のための経済性評価手法の提案

    伊藤 亮輔, 中村 信夫, 福重 真一, 梅田 靖

    精密工学会学術講演会講演論文集   2013 ( 0 ) 415 - 416  2013

     View Summary

    近年,環境を考慮したビジネス「エコビジネス」を企画する企業が増えつつあるが,一般的にエコとビジネスの両立は容易ではない.そこで著者らはエコビジネスをプランニングするための支援手法を提案しているが,専門知識を有しない人が発想したプランについて環境性・事業性の面から定量的に評価する手法は確立されていない.本稿では,簡易な経済性評価を行うための手法を提案し,ケーススタディによりその有効性を示す.

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  • 集合住宅向けエネルギー供給システムの将来シナリオ作成(第1報):将来の社会状況の変化を考慮したコージェネレーション機器の優位性評価

    中村 恭明, 木下 裕介, 久角 喜徳, 堀 司, 福重 真一, 梅田 靖, 若林 努

    精密工学会学術講演会講演論文集   2013 ( 0 ) 419 - 420  2013

     View Summary

    東日本大震災以降,発電機能を持つコージェネレーションシステム(CGS)が注目されているが,その優位性は将来の社会状況によって異なる.本研究では集合住宅を対象として,異なる社会状況下でのCGSの優位性を評価するために,複数の将来シナリオを作成する.作成したシナリオを環境性,経済性の観点から評価した結果,CGSの利用によって系統電力負荷のピークを大幅に削減できる可能性のあることが明らかとなった.

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  • Development of Design Support Environment for Multi-generational Product Life Cycles:(1st Report) Fundamental Concept

    Matsuno Tomohiko, Matsuyama Yuki, Fukushige Shinichi, Umeda Yasushi

    Proceedings of JSPE Semestrial Meeting   2013 ( 0 ) 725 - 726  2013

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  • Geometric Adjustment System for Evaluating the Environmental Impact of Selected Materials

    Fukushige Shinichi, Nishimura Yukiko, Umeda Yasushi

    Proceedings of JSPE Semestrial Meeting   2013 ( 0 ) 727 - 728  2013

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  • 1103 Development of Design Support System for Lifecycle Scenario-Based Product Design : 4th Report: Application to Design for Recycling of LCD TVs

    MIZUNO Takahiro, TANINO Toshiki, MATSUYAMA Yuki, KUNII Eisuke, FUKUSHIGE Shinichi, UMEDA Yasushi

    The Proceedings of Design & Systems Conference   2012 ( 0 ) _1103 - 1_-_1103-10_  2012

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    In order to improve the recyclability of products, quantitative evaluation of the recyclability at the design stage is important. This paper addresses design for recycling of electrical and electronic products based on a recyclability rate index. This index is defined as a rate of recyclable materials to total weight of a product and calculated by using information on the product and its end-of-life (EoL) scenario. In the previousresearch, we proposed a framework of lifecycle CAD (LC-CAD) that provides designers with an integrated design environment for both a product and its lifecycle. In this paper, the LC-CAD framework is applied to the design for recycling based on the recyclability rate. The system caluculates the recyclability rate from the product model and the EoL scenario integrated in the system, and the candidates of design modifications for improving the recyclability of the product are derived from the sensitibity analysis on the recyclability rate. As a case study, some examples of design modifications for the recyclability of a LCD TV are made from the quantitative evaluation and the sensitibity analysis.

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  • 3106 Describing and Analyzing Scenarios of Regional Electricity Systems Based on the Diffusion of Low-carbon Technologies

    KISHITA Yusuke, KURAHASHI Naoto, YAMAGUCHI Yohei, FUKUSHIGE Shinichi, UMEDA Yasushi

    The Proceedings of Design & Systems Conference   2012 ( 0 ) _3106 - 1_-_3106-10_  2012

     View Summary

    In pursuit of a low-carbon society, a variety of products have been disseminated, such as photovoltaic (PV) systems and electric vehicles (EVs). While the dissemination of such energy-saving products will affect power systems, the question is to what extent the dissemination of these products will influence on regional power systems in the future. To envision future images of power systems, this paper describes scenarios of regional electricity systems by analyzing the influence of the diffusion of PV systems and EVs. A simulation model is developed for estimating the diffusion of PV systems and EVs and regional electricity demand. As a case study, several scenarios of regional electricity networks in Toyonaka City, Osaka, Japan are described assuming the year 2030. The results demonstrate that the numbers of PV systems and EVs largely differ depending on the scenarios. Moreover, it is shown that utilizing EVs as batteries has the potential of reducing the peak of electricity demand from power grid by 46-48%.

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  • 3Sシミュレータを用いた地域エネルギー需給シナリオの作成

    倉橋 直人, 木下 裕介, 小林 和博, 山口 容平, 福重 真一, 梅田 靖

    精密工学会学術講演会講演論文集   2012 ( 0 ) 917 - 918  2012

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    近年,地球環境問題に対する取り組みとして,省エネルギー技術,再生可能エネルギー技術の開発が進められている.しかし,それらが導入された社会におけるエネルギー需給の状況は不明確である.その不明確な将来に対処するため,将来エネルギー需給シナリオを作成する.その作成支援システムとして,将来シナリオシミュレータを提案する.本稿では,シナリオの一例として作成した「豊中市CEV普及シナリオ」について報告する.

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  • End-of-Lifeシナリオに基づいたリサイクル性評価に関する研究

    水野 貴広, 谷野 敏樹, 國井 英輔, 福重 真一, 梅田 靖

    精密工学会学術講演会講演論文集   2012 ( 0 ) 919 - 920  2012

     View Summary

    製品の設計段階でリサイクル性を向上させることは,資源の確保や生産性向上に有効である.しかし,リサイクル性評価の一種であるリサイクル可能率は実際のリサイクルプロセスを考慮せずに算出されることが多く,実際のリサイクル実効率よりも高くなる危険性がある.本研究ではEnd-of-Lifeシナリオに基づきリサイクル可能率を評価する手法を提案し,液晶テレビを対象に日本と欧州におけるEnd-of-Lifeシナリオを調査し,リサイクル可能率評価を行った.

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  • ライフサイクル戦略の策定とその製品設計への展開を支援するCADシステムの開発(第4報):ライフサイクルを通じて変化する製品状態の表現

    國井 英輔, 鹿田 憲吾, 福重 真一, 梅田 靖

    精密工学会学術講演会講演論文集   2012 ( 0 ) 929 - 930  2012

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    ライフサイクル設計においては,製品とそのライフサイクルを統合的に設計することが重要となる.そのためには,製品ライフサイクルにおける様々な視点に応じて異なる製品の状態を設計者に明示化することが必要不可欠である.本研究では,製品の表現形式として階層構造を定義し,さらに製品ライフサイクルとの対応付けを定義することで,ライフサイクルを通じて変化する製品状態を表現する手法を提案する.

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  • 将来世代における製品の形状変化に対応したアップグレード設計支援

    福重 真一, 有野 雅規, 梅田 靖

    精密工学会学術講演会講演論文集   2012 ( 0 ) 931 - 932  2012

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    本研究では,製品の価値寿命を延長するための設計技術の一つとしてアップグレード設計に着目し,対象の製品にあらかじめ構造や形状の変更の可能性を組み込むことで,アップグレードによる部品の追加・交換に柔軟に対応し,将来世代におけるアップグレードを幾何的な側面からも可能にする設計支援手法を提案する.

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  • 1102 Development of Design Support System for Lifecycle Scenario-based Product Design : 3^<rd> Report: Proposal of Representational Scheme for Product Changing through its Life Cycle

    MATSUYAMA Yuki, KUNII Eisuke, SHIKATA Kengo, FUKUSHIGE Shinichi, UMEDA Yasushi

    The Proceedings of Design & Systems Conference   2012 ( 0 ) _1102 - 1_-_1102-9_  2012

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    A product changes through its life cycle. Product components change their states (e.g., degradation of performance caused by attrition and corrosion during their operation, and change of geometry by processing and shredding) and change their relationship such as disassembly in maintenance process. In addition, a product involves various stakeholders through its life cycle. The stakeholders recognize a product from different viewpoints because they have their own needs to the product (e.g., for manufactures, a product is to be assembled and sold to customers, and for recyclers, a product is to be dismantled and sold as recycled materials). In order to improve the performance on environmental and economical aspects throughout the entire product life cycle, designers need to design both a product and its life cycle by focusing on these changes of a product. For the development of a support system for such a design, this paper proposes a representational scheme for a product changing through its life cycle. A case study indicates that our method successfully represents changes of a product and allows designers to design a product and its life cycle by considering these changes.

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  • Design Method for Product Recyclability using Recyclability Rate

    Fukushige Shinichi, Tanino Toshiki, Mizuno Takahiro, Matsuyama Yuki, Kunii Eisuke, Umeda Yasushi

    Proceedings of JSPE Semestrial Meeting   2012 ( 0 ) 131 - 132  2012

    DOI CiNii

  • エコビジネス・プランニング支援手法開発に向けたワークショップ実施結果の分析

    伊藤 亮輔, 中村 信夫, 福重 真一, 梅田 靖

    精密工学会学術講演会講演論文集   2012 ( 0 ) 135 - 136  2012

     View Summary

    近年,消費者の環境志向の高まりにより環境を考慮したビジネス「エコビジネス」を企画する企業が増えつつあるが,一般的にエコとビジネスの両立は容易ではない.そこで著者らはエコビジネス・プランニング(EBP)を支援するためのツールを開発しており,その有用性を分析するために事業者と共にEBPのワークショップを複数回行った.本稿ではワークショップの実施結果を分析し得られた知見および今後の展望を記述する.

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  • ライフサイクル戦略の策定とその製品設計への展開を支援するCADシステムの開発(第5報):ライフサイクルCADシステムを用いた設計プロセスの提案

    國井 英輔, 福重 真一, 梅田 靖

    精密工学会学術講演会講演論文集   2012 ( 0 ) 141 - 142  2012

     View Summary

    ライフサイクル設計においては,製品のライフサイクル全体を設計することが必要不可欠である.本研究では,その支援を目的に設計支援システム(ライフサイクルCADシステム)を開発している.本報では,ライフサイクルCADシステムを用いたライフサイクル設計の流れを整理することで設計支援手法の全体像を示すとともに,ライフサイクル設計における本設計支援手法の位置づけを明らかにする.

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  • Proposal of a Structural Description Method of Scenarios for Sustainable Society Simulation (11th Report):Verifying effectiveness of Sustainable Society Scenario Simulator through case study

    Mizuno Yuji, Kishita Yusuke, Wada Haruna, Fukushige Shinichi, Umeda Yasushi

    Proceedings of JSPE Semestrial Meeting   2012 ( 0 ) 143 - 144  2012

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  • 15・2 エコデザイン(15.設計工学・システム,<特集>機械工学年鑑)

    福重 真一

    日本機械学会誌   115 ( 1125 ) 576 - 577  2012

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  • 2413 A Design Support Method for Upgrade Design Using Geometric Constraints among Components

    FUKUSHIGE Shinichi, ARINO Masaki, UMEDA Yasushi

      2011 ( 21 ) 428 - 431  2011.10

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    Increasing the efficiency of resources is a major approach within the framework of sustainability in manufacturing. Long-life design of a product is one of the promising approaches for improving resource efficiency of the lifecycle of the product. Design methodology for upgradability enables products to be used for longer than conventional products tend to be abandoned because of functional obsoleteness before the end of physical life. One of the difficulties of upgrade design resides within prediction of future trend such as technological trends and market trends, and upgradable products should be robust against such uncertainties in the future. In order to deal with such uncertainties of future technological trends, in our previous research, we proposed a method to make upgrade plans of a product which specify the lineup of candidate components for the upgrade at each generation. In other words, the upgrade plans include information when a product is upgraded and which components are replaced with up-to-date ones. And then, the plan should be implemented by designing the product structure and geometry. However, designing the geometric model of an upgradable product which can adapt to the upgrade plan is one of the unsolved issues. For supporting this design stage, in this paper, we propose a computer-aided design method for geometric models of upgradable products. Our design method assumes that geometric constraints are included in the original product model. Based on the information, our method supports designers to reconstruct the product model to adapt to the upgrade plan and to satisfy the geometric constraints. This paper also demonstrates the availability of the method with a design example of an upgradable cellular phone.

    CiNii

  • 3302 Development of Design Support System for Lifecycle Scenario-based Product Design : 2nd Report:Consistency Management between Product and its Lifecycle Flow

    KUNII Eisuke, MATSUURA Takeshi, FUKUSHIGE Shinichi, UMEDA Yasushi

    The Proceedings of Design & Systems Conference   2011 ( 0 ) 565 - 570  2011

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    In order to increase value and reduce environmental loads of a product life cycle, it is important to design a lifecycle flow as well as designing product. For designing them, it is essential to compare design information of a product with that of lifecycle flow. The objective of this paper is to propose a consistency management system between product and lifecycle flow for lifecycle scenario-based product design. For this purpose, we propose a product model and a lifecycle flow model as a representational scheme and define the linkages between these two models. And we propose a consistency management method by defining two levels of consistency; namely, model consistency level, and requirement fulfillment level. A case study indicates that the relationship between the product model and the lifecycle flow model is successfully represented and a designer can design a product and its lifecycle flow in an integrated manner.

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  • 3303 Supporting the Design of Business Strategy Scenarios for Sustainable Society

    Kishita Yusuke, Mizuno Yuji, Hirosaki Maki, Wada Haruna, Fukushige Shinichi, Umeda Yasushi

    The Proceedings of Design & Systems Conference   2011 ( 0 ) 571 - 576  2011

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    Manufacturing companies encounter many uncertainties in planning long-term strategies for making their business sustainable. As a decision-making tool in the business world, designing scenarios is a promising approach for examining various business strategies by drawing various possible situations in the future. The purpose of this paper is to propose a method for supporting the design of scenarios of planning business strategies. In this method, we describe a business strategy scenario using existing sustainability scenarios. The method intends to help describe business environments by reusing and extending descriptions of sustainability scenarios. A scenario about solar panel business is described using the proposed method. Results illustrate that the method succeeds in describing a detailed business environment by deploying an existing sustainability scenario, and finally, obtaining several business strategies based on the business environment. In addition, our method clarifies the logical structure of the scenario, enabling to review rationales for deriving those business strategies.

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  • 3306 Proposal of a Design Support Method for Sustainability Scenarios (2nd Report) : Description Support of Backcasting Scenarios

    Wada Haruna, Kishita Yusuke, Mizuno Yuji, Hirosaki Maki, Kobayashi Kazuhiro, Fukushige Shinichi, Umeda Yasushi

    The Proceedings of Design & Systems Conference   2011 ( 0 ) 589 - 594  2011

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    Although many scenario development methods have been proposed, these methods are too abstract and have no specific procedure for designing backcasting scenarios. This paper proposes a method for supporting design of backcasting scenarios using logic tree. In this method, logic tree supports determining the structure of a backcasting scenario and creating storylines, which are outlines of sub scenarios. The logic tree and the storylines support describing scenario texts. As a case study, we described a backcasting scenario on "breakdown" of Japanese manufacturing in 2050. As the result of case study, the logic tree systematically supports determining the structure of this scenario and generating its storylines. And composing scenario text is supported by detailing the logic tree and the storylines.

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  • 3307 Development of methodology for supporting design of new eco-business

    MANDAI Kohei, NAKAMURA Nobuo, FUKUSHIGE Shinichi, UMEDA Yasushi

    The Proceedings of Design & Systems Conference   2011 ( 0 ) 595 - 600  2011

     View Summary

    As global environmental issues have become aggravated, "Eco" become a competitive advantage in the business because of increasing consumer's environmental consciousness. However, it is difficult to lead eco-business to the success in both of environmental and economic aspects. For promoting Eco-business, it will be effective to support finding out eco-business ideas and evaluating feasibility of eco-business. The purpose of this study is to propose the methodology that supports the design of eco-business based on a set of general rules. For this purpose, this paper proposes the method of settling on business model based on idea and the business evaluation. Especially, this evaluation methodology pays attention to the merchantability of the business model. In addition, the methodology is verified by a case study.

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  • Proposal of design methodology for upgradability considering geometric information

    Arino Masanori, Fukushige Shinichi, Umeda Yasushi

    Proceedings of JSPE Semestrial Meeting   2011 ( 0 ) 679 - 680  2011

    DOI CiNii

  • A Method for Supporting the Design of Business Strategy Scenarios for a Sustainable Society (1st Report):Concept of Supporting the Design of Business Strategy Scenarios

    Kishita Yusuke, Mizuno Yuji, Hirosaki Maki, Fukushige Shinichi, Umeda Yasushi

    Proceedings of JSPE Semestrial Meeting   2011 ( 0 ) 681 - 682  2011

     View Summary

    Responding to an increasing need for establishing a sustainable society, companies are required to integrate sustainability perspectives into their business strategies. Designing scenarios is a powerful approach to examining various business strategies by drawing various possible futures about business environment. However, computational assistance in designing such scenarios is hardly provided. This paper firstly presents a framework for designing business strategy scenarios, which involve business environments as well as business strategies based on those environments. Then, an approach to supporting the scenario design is proposed for encouraging companies to design scenarios in a computational manner. In this approach, business strategy scenarios are composed using existing sustainability scenarios for their efficient composition.

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  • A Method for Supporting Design of Business Strategy Scenarios for a Sustainable Society (2nd Report):Supporting Design of Business Strategy Scenarios Based on Sustainable Society Scenarios

    Hirosaki Maki, Kishita Yusuke, Mizuno Yuji, Wada Haruna, Fukushige Shinichi, Umeda Yasushi

    Proceedings of JSPE Semestrial Meeting   2011 ( 0 ) 683 - 684  2011

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  • Development of CAD System for Supporting the Determination of the Life Cycle Strategy and the Adoption to the Product Design (2nd Report):Construction of Support System for Life Cycle Scenario-based Product Design

    Matsuura Takeshi, Kunii Eisuke, Fukushige Shinichi, Umeda Yasushi

    Proceedings of JSPE Semestrial Meeting   2011 ( 0 ) 689 - 690  2011

    DOI CiNii

  • Development of CAD System for Supporting the Determination of the Life Cycle Strategy and the Adoption to the Product Design (3rd Report):Proposal of Design Process for Life Cycle Flow

    Matsuyama Yuki, Kunii Eisuke, Fukushige Shinichi, Umeda Yasushi

    Proceedings of JSPE Semestrial Meeting   2011 ( 0 ) 735 - 736  2011

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  • A Method for Supporting Design of Business Strategy Scenarios for a Sustainable Society (3rd Report):Deployment of Business Strategies in Accordance with Different Business Environments

    Hirosaki Maki, Kishita Yusuke, Mizuno Yuji, Fukushige Shinichi, Umeda Yasushi

    Proceedings of JSPE Semestrial Meeting   2011 ( 0 ) 739 - 740  2011

    DOI CiNii

  • Proposal of a Structural Description Method of Scenarios for Sustainable Society Simulation (10th report):Design support of backcasting scenarios

    Mizuno Yuji, Kishita Yusuke, Wada Haruna, Kobayashi Kazuhiro, Fukushige Shinichi, Umeda Yasushi

    Proceedings of JSPE Semestrial Meeting   2011 ( 0 ) 741 - 742  2011

    DOI CiNii

  • 3305 Assessing Feasibility of Long-term Energy Scenarios Focusing on the Risk of Copper Depletion

    Kishita Yusuke, Inoue Yuta, Fukushige Shinichi, Umeda Yasushi, Kobayashi Hideki

    The Proceedings of Design & Systems Conference   2011 ( 0 ) 583 - 588  2011

     View Summary

    There are a number of long-term energy scenarios toward establishing a sustainable society, particularly a low-carbon society. However, it is unclear whether such scenarios are feasible in terms of resource depletion. This paper proposes a method for assessing balance of long-term metal demand and supply based on existing energy scenarios. The paper focuses on copper depletion since introducing low-carbon technologies (e.g., electric vehicle (EV)) may induce massive copper consumptions. Our method proposes two approaches (macro approach and micro approach) in order to estimate copper demand from two different angles, i.e., economic growth and dissemination of products. Results illustrate that the cumulative copper consumptions exceed the copper reserved in the earth by around 2050. The increase in copper consumptions results mainly from world economic growth led by emerging countries, while dissemination of EVs has a minor impact on it.

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  • ライフサイクル戦略の策定とその製品設計への展開を支援するCADシステムの開発(第1報):ライフサイクル戦略に基づいた製品設計のための計算機支援

    國井 英輔, 福重 真一, 梅田 靖

    精密工学会学術講演会講演論文集   2010 ( 0 ) 163 - 164  2010

     View Summary

    製品の寿命やメンテナンス性,リサイクル性などは概ね製品設計の段階で決定してしまうため,ライフサイクル設計においては,先に製品のライフサイクル戦略を策定してから,それが達成できるように製品設計を行うことが重要となる.本研究では,3D-CADおよびライフサイクルシミュレーションの統合によるライフサイクル評価・設計環境の構築を通して,ライフサイクル戦略に基づいた製品設計のための計算機支援手法を提案する.

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  • Potential accounting of urban-rural partnership using scenario analysis

    LOW BIHONG, Tusda Kazutoshi, Fukushige Shinichi, Umeda Yasushi

    Abstracts for ILCAJ meeting   2010 ( 0 ) 69 - 69  2010

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  • Proposal of a Structural Description Method of Scenarios for Sustainable Society Simulation (8th Report):Creating New Sub-scenarios Based on What-if Analysis of Existing Scenarios

    Kishita Yusuke, Mizuno Yuji, Fukushige Shinichi, Umeda Yasushi

    Proceedings of JSPE Semestrial Meeting   2010 ( 0 ) 173 - 174  2010

    DOI CiNii

  • Proposal of a Structural Description Method of Scenarios for Sustainable Society Simulation (9th report):Describing new scenarios using causal network

    Wada Haruna, Kishita Yusuke, Mizuno Yuji, Fukushige Shinichi, Umeda Yasushi

    Proceedings of JSPE Semestrial Meeting   2010 ( 0 ) 175 - 176  2010

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  • Development of Computational Environment for Life Cycle Scenario Based Product Design

    Kawada Yasutake, Yamamoto Kazuhiro, Fukushige Shinichi, Umeda Yasushi

    Proceedings of JSPE Semestrial Meeting   2010 ( 0 ) 179 - 180  2010

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  • 2401 Evaluation on methodology for designing new eco-business ideas through case studies

    NAKAMURA Nobuo, MANDAI Kohei, FUKUSHIGE Shinichi, UMEDA Yasushi

    The Proceedings of Design & Systems Conference   2010 ( 0 ) _2401 - 1_-_2401-6_  2010

     View Summary

    Recently, in order to build sustainable society, transition from conventional business to environmentally conscious business, so called "Eco-business", is eagerly required. For promoting Eco-business, it is effective to support finding out Eco-business ideas. The purpose of this study is to modify an existing methodology for designing new Eco-business ideas. To modify the methodology, we evaluate it through studies of 20 cases of existing Eco-business. Then we modified the methodology; i) to define the Eco-business idea, which is output of the methodology ii) to change the idea generation process, and iii) to modify the evaluation of Eco-business ideas derived from this methodology.

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  • 2405 Proposal of a Design Support Method for Sustainability Scenarios (1st Report) : Description Support of Forecasting Scenarios

    Wada Haruna, Kishita Yusuke, Mizuno Yuji, Fukushige Shinichi, Umeda Yasushi

    The Proceedings of Design & Systems Conference   2010 ( 0 ) _2405 - 1_-_2405-6_  2010

     View Summary

    Although there exist many scenario composing methods, computational support has not been provided enough for scenario design. This paper proposes a method for supporting design of new forecasting scenarios using a causal network and a storyline. This method supports creating storylines, which are assumptions of sub scenarios, as well as composing scenario text based on the causal networks and the storylines. A prototype system is developed for supporting the proposed method. The results of case study illustrated that generating the storylines of a scenario are systematically supported by using the causal network and that composing scenario text is supported by detailing the causal network and the storylines.

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  • 2409 Proposal of a Support Method for Life Cycle Scenario Description Based on Product Life Cycle Characteristics

    YAMAMOTO Kazuhiro, FUKUSHIGE Shinichi, UMEDA Yasushi

    The Proceedings of Design & Systems Conference   2010 ( 0 ) _2409 - 1_-_2409-4_  2010

     View Summary

    Determining life cycle strategies at the early stage of life cycle design is crucial for minimizing environmental loads and costs throughout a product life cycle. This article proposes a method for supporting description of life cycle scenario, which is one way to represent a life cycle strategy, based on product life cycle characteristics. The method consists of four main features: (i) step-wise description of a life cycle scenario, (ii) representation of design rationale, (iii) managing design alternatives by using Truth Maintenance System (TMS), and (iv) integrating the results gained from other life cycle design support tools. These four features enable designers to describe and examine various feasible life cycle scenarios. The case study shows that the method successfully supports designers to describe life cycle scenarios easily and efficiently.

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  • 2410 Development of Design Support System for Lifecycle Scenario-based Product Design : 1st Report: Stepwise Design of Product Architecture Based on a Lifecycle Flow Model

    FUKUSHIGE Shinichi, KUNII Eisuke, UMEDA Yasushi, KAWATA Yasutake

    The Proceedings of Design & Systems Conference   2010 ( 0 ) _2410 - 1_-_2410-4_  2010

     View Summary

    Minimizing environmental loads and costs throughout a product lifecycle requires appropriate lifecycle design as well as the design of the product itself. Design of a product involves planning lifecycle strategies, evaluating it from various viewpoints and optimizing the overall picture based on the product and market properties. Product lifecycle strategy can be planned by describing lifecycle scenarios at an early stage and the product architecture should be designed so as to realize the scenario. In this paper, we propose a design support method for product structure design based on lifecycle scenarios. Our method links a lifecycle flow, as a central model of a lifecycle scenario, to product structure by unifying components that go through the same path in the lifecycle flow. The designed structure, therefore, leads to easy management of components throughout the lifecycle and reduce the environmental loads and the costs of lifecycle processes.

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  • Proposal of Scenario-based Modularization and its Evaluation Method for Life Cycle Design

    Tonoike Keita, Inoue Yoichiro, Fukushige Shinichi, Umeda Yasushi

    Proceedings of JSPE Semestrial Meeting   2009 ( 0 ) 661 - 662  2009

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  • Proposal of a Methodology for Constructing Weighted Checklist for Environmentally Conscious Design

    Low Bi Hong, Kishita Yusuke, Fukushige Shinichi, Umeda Yasushi, Suzuki Atsushi, Kawabe Takao

    Proceedings of JSPE Semestrial Meeting   2009 ( 0 ) 663 - 664  2009

    DOI CiNii

  • 持続可能社会シミュレーションのためのシナリオ構造記述法の提案(第5報):シナリオの基底を用いた論理構造の分析

    木下 裕介, 山崎 泰寛, 水野 有智, 福重 真一, 梅田 靖

    精密工学会学術講演会講演論文集   2009 ( 0 ) 671 - 672  2009

     View Summary

    持続可能社会シナリオを合理的に理解するためには,その論理構造を明確にする必要がある.本報では,前報までで提案した手法に基づくシナリオの構造化によって,シナリオ文章における因果関係,参照関係などを明示化する.特に本報では,「シナリオの基底」を定義することにより,シナリオの結論を支持する根拠を明確化する.ケーススタディの結果,シナリオの結論の多くは因果関係よりも参照関係により導出されることがわかった.

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  • Proposal of a Structural Description Method of Scenarios for Sustainable Society Simulation (6th Report):Description of dynamic scenarios using the simulator archives

    Yamasaki Yasuhiro, Mizuno Yuji, Kishita Yusuke, Fukushige Shinichi, Umeda Yasushi

    Proceedings of JSPE Semestrial Meeting   2009 ( 0 ) 673 - 674  2009

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  • 706 Product Modeling System for Life Cycle Design

    FUKUSHIGE Shinichi, KAWADA Yasutake, UMEDA Yasushi

    The Proceedings of Conference of Kansai Branch   2009 ( 0 ) _7 - 6_  2009

    DOI CiNii

  • Proposal of a Structural Description Method of Scenarios for Sustainable Society Simulation (7th Report):Describing new scenarios using structural scenario description

    Mizuno Yuji, Kishita Yusuke, Fukushige Shinichi, Umeda Yasushi

    Proceedings of JSPE Semestrial Meeting   2009 ( 0 ) 1021 - 1022  2009

    DOI CiNii

  • Proposal of a Product Design Method Based on Lifecycle Scenario:Evaluation and Redesign of Modular Structure by Resource Efficiency Index

    Fukushige Shinichi, Inoue Yoichiro, Umeda Yasushi, Tonoike Keita

    Proceedings of JSPE Semestrial Meeting   2009 ( 0 ) 1027 - 1028  2009

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  • 2506 Proposal of a Structural Description Method of Scenarios Toward the Sustainable Society

    Kishita Yusuke, Mizuno Yuji, Fukushige Shinichi, Umeda Yasushi

    The Proceedings of Design & Systems Conference   2009 ( 0 ) 577 - 582  2009

     View Summary

    Scenarios are promising for drawing images of manufacturing industry in the sustainable society. Sustainable Society Scenario (3S) Simulator aims to support understanding, describing, and analyzing sustainability scenarios. To realize 3S Simulator, this paper proposes a method for describing structural scenarios by means of ontology. This method clarifies the logical structure of scenarios and facilitates scenario analysis. Examples illustrate that the proposed method clarifies the structure of a sub-scenario for a rational understanding, e.g., articulating rationales used for setting input data of a simulation. Also, what-if analysis by changing simulation assumptions in an original scenario is useful for discussing various futures.

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  • 3201 Integrated design environment for life cycle design

    Kawada Yasutake, Yamamoto Kazuhiro, Fukushige Shinichi, Umeda Yasushi

    The Proceedings of Design & Systems Conference   2009 ( 0 ) 642 - 645  2009

     View Summary

    Life cycle design requires planning of a product life cycle in addition to designing of a product itself. One of the effective methods to plan the product life cycle is by describing of a life cycle scenario, which should be then realized by designing the product and its processes. On the other hand, the life cycle scenario should be decided by keeping the consistency of the product's functionality and performance. This paper proposes an integrated design environment to support the life cycle design comprehensively. In other words, we propose a design system that supports a designer to describe the life cycle scenario and to design product in an integrated manner.

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  • 3202 Lifecycle Design Based on Product Recyclability

    Fukushige Shinichi, Inoue Yoichiro, Umeda Yasushi

    The Proceedings of Design & Systems Conference   2009 ( 0 ) 646 - 647  2009

     View Summary

    Minimizing environmental loads and costs throughout a product's lifecycle requires appropriate lifecycle design in addition to the design of the product itself. Design of a lifecycle of a product involves planning lifecycle strategies, evaluating it from various viewpoints and optimizing the overall picture based on the item's properties. A product's lifecycle strategy can be designed easily by describing lifecycle scenarios at an early stage and the product architecture should match the desired one. In evaluating product structure, we must take into account the applicability of scenarios to the designed product. We should derive plausible product structure implementing an executable lifecycle scenario under the equilibrium between its process costs and reduction effects on the environmental loads by executing the scenario. In order to include this aspect, we formalize the probability that each component will follow the preferable lifecycle paths designated by the scenario. We also propose an index for evaluating and improving efficiency in resource circulation of the designed product structure.

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  • 3203 Evaluation of Modular Structure Considering Resource Circulation Path

    Inoue Yoichiro, Fukushige Shinichi, Umeda Yasushi

    The Proceedings of Design & Systems Conference   2009 ( 0 ) 648 - 651  2009

     View Summary

    Life cycle design is indispensable for minimizing the environmental loads and costs through the whole product life cycle. In life cycle design, modular design is an important elemental technique to improve, e.g., maintainability, upgradability, reusability, and recyclability. It unifies components that go through the same path in the lifecycle flow and increases the efficiency in resource circulation. For representing this advantage, we introduce resource efficiency as an evaluative index for product modularity by employing the concept of eco-efficiency. For the evaluation, we formalize the probability that each module goes through preferable lifecycle paths designated by its lifecycle scenario. This paper also illustrates the prototype system that implements the proposed method and a case study of an ink-jet printer

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  • 3204 A Design Method for Product Simplification by Generating Minimal Structure

    Fukushige Shinichi, Kawada Yasutake, Umeda Yasushi

    The Proceedings of Design & Systems Conference   2009 ( 0 ) 652 - 657  2009

     View Summary

    Increasing productivity and efficiency of resources is a major approach within the framework of sustainability in manufacturing. This paper proposes a design method to simplify the structure of a product as a key technique for increasing resource productivity. Our method removes redundant components and their connections by extracting a minimum structure as an ideal minimized formation of connectivity. Designers then redesign the product by embodying the minimum structure to meet design requirements. The method was implemented to verify the advantages of the methodology and presents several potential redesigned geometric models. This paper also illustrates a case study using models of a vacuum cleaner and an inkjet printer in order to discuss effectiveness of the proposed method.

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  • 持続可能社会シナリオシミュレーションのためのシナリオ構造記述法の提案(第2報):シナリオレベルからみたシナリオ構造の分析

    西山 武志, 山崎 泰寛, 水野 有智, 木下 裕介, 梅田 靖, 福重 真一

    精密工学会学術講演会講演論文集   2008 ( 0 ) 859 - 860  2008

     View Summary

    本研究では既存のシナリオを集積し持続可能な社会をシミュレートすることにより,持続可能な製造業のシナリオを描くことを最終的な目標にしている.本稿では,持続可能社会のシナリオを3つの視点から構成要素とその関係により形式化し、それらを用いてシナリオを構造化する方法を提案する.特に,シナリオ全体を部分シナリオに分割するシナリオレベルにおけるシナリオ構造の記述法を提案し,事例分析結果を述べる.

    DOI CiNii

  • Proposal of a Structural Description Method of Scenarios for Sustainable Society Simulation (3rd report):- Extraction of causality from phrase level -

    Mizuno Yuji, Nishiyama Takeshi, Yamasaki Yasuhiro, Kishita Yusuke, Umeda Yasushi, Fukushige Shinichi

    Proceedings of JSPE Semestrial Meeting   2008 ( 0 ) 861 - 862  2008

    DOI CiNii

  • 3314 Proposal of a structural description method of scenanos for Sustainable Society Scenario Simulator

    YAMASAKI Yasuhiro, UMEDA Yasushi, FUKUSHIGE Shinichi, KISHITA Yusuke, MIZUNO Yuji

    The proceedings of the JSME annual meeting   2008 ( 0 ) 205 - 206  2008

     View Summary

    To solve the environmental problems, such as the climate change, many scenarios toward the sustainable society have been proposed. Scenario studies contribute to policy forming processes directed to these problems, and to visualizing the vision of desirable future. However it is necessary to clarify the causality or uncertainty described in scenarios, in order to create and understand these scenarios rationally. This paper proposes a structural description method of these scenarios. This method has two purposes. One is to develop a database of scenarios for supporting describing new scenarios. The other is to reuse simulators used in scenarios for analyzing the conclusions in the scenario. We describe scenarios by using three viewpoints; Scenario Level, Expression Level, and Word Level. This paper proposes structural description of scenarios on the Scenario Level and Expression Level and illustrates an example of structural description of scenarios.

    DOI CiNii

  • 112 Product Modularity for Life Cycle Design

    FUKUSHIGE Shinichi, TONOIKE Keita, UMEDA Yasushi

    The Proceedings of Conference of Kansai Branch   2008 ( 0 ) _1 - 17_  2008

    DOI CiNii

  • 持続可能社会シミュレーションのためのシナリオ構造記述法の提案 (第4報):シナリオとシミュレータの接続

    木下 裕介, 山崎 泰寛, 水野 有智, 福重 真一, 梅田 靖, 松本 光崇, 藤本 淳

    精密工学会学術講演会講演論文集   2008 ( 0 ) 619 - 620  2008

     View Summary

    本研究では,持続可能社会の構築に向けたシナリオを合理的に作成するために,前提条件や仮定,因果関係などのシナリオ構造を記述するための手法を提案する.本報の目的は,一般的にシナリオに付随するシミュレータと,シナリオの論理関係を明示的に記述するための手法を提案することである.ここでは「ハイブリッド車普及シナリオ」を例にとり,シナリオとシミュレータを接続するための手法を開発する.

    DOI CiNii

  • 持続可能なグローバル循環に向けたシナリオ分析とトレーサビリティ評価

    國井 英輔, 木下 裕介, 福重 真一, 梅田 靖

    精密工学会学術講演会講演論文集   2008 ( 0 ) 621 - 622  2008

     View Summary

    持続可能な資源循環の条件を導出するために,さまざまな国際資源循環シナリオの作成と評価を行った.特に本研究では,持続可能な循環の重要な要素であるトレーサビリティを,リスクの概念を用いてモデル化し,定量的な評価を可能にした.ケーススタディとして日本と中国の間の使用済みパソコンの循環を取り上げた.その結果,リユースを行うシナリオが経済面で有効である一方で,トレーサビリティは低くなることが分かった.

    DOI CiNii

  • 製品のリデュース設計支援に向けた部品間接続構造の簡略化手法

    福重 真一, 川田 康毅, 梅田 靖

    精密工学会学術講演会講演論文集   2008 ( 0 ) 631 - 632  2008

     View Summary

    本研究ではCADモデルを用いて部品間の接続構造を合理化・簡略化することで製品のリデュース設計を実現する方法を提案する.一般にリデュース設計はノウハウに基づき各製品に対して個別に行われる傾向にあるが,本研究ではより汎用的に適用可能な方法として,製品の幾何情報や部品接続情報を用いて製品モデルの抽象構造を抽出し,これを簡略化したものを再び実体構造に復元することによって再設計案を導出する手法を提案する.

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  • 3316 An approach to support reducing by simplifying the components structure

    KAWADA Yasutake, FUKUSHIGE Shinichi, UMEDA Yasushi

    The proceedings of the JSME annual meeting   2008 ( 0 ) 209 - 210  2008

     View Summary

    From the view point of realization of sustainable society, it is required to minimize the consumption of resources and/or energy in designing or producing mechanical products. "Reduce design" is one of the most effective methods because of its advantages such as the cost of material, the cost of transport, and the processes of production. This paper describes an approach to support designers to increase the resource productivity by abstracting and simplifying the product structure among the component connectivity. This approach enables designers to simplify products systematically. A case study based on model of an inkjet printer showed the effectiveness of the methodology.

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  • 1303 Development of an Eco-Business Idea Generation Support System : 2nd Report: Divergence and Convergence of Ideas

    NISHIOKA Takuya, TAKAHASHI Hayato, FUKUSHIGE Shinichi, UMEDA Yasushi

    The Proceedings of Design & Systems Conference   2008 ( 0 ) 143 - 147  2008

     View Summary

    In order to realize the sustainable manufacturing, we need to realize the good balance of environmental and economical efficiencies in business. The purpose of this study is to propose the methodology about generation of business ideas that change existing business to environmentally conscious business (or eco-business). Especially in this study, we focus on two stages of idea generation, i.e., divergence and convergence thinking stages. In the divergence stage, the system helps a designer to generate ideas as many as possible by using the rules for eco-business. In the convergence stage, the system helps to extract hopeful ideas from these ideas by categorizing and qualitatively comparing ideas.

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  • 1304 Development of Description Support System for Life Cycle Scenario

    SHINOHARA Tatsuro, FUKUSHIGE Shinichi, UMEDA Yasushi, SUESADA Ryo

    The Proceedings of Design & Systems Conference   2008 ( 0 ) 148 - 151  2008

     View Summary

    This paper proposes a method for describing product life cycle scenario and a description support system for the life cycle scenario. Our idea is that a designer can determine the life cycle strategy easily by describing the life cycle scenario. We define a representational scheme of the life cycle scenario and developed the support system based on the design rationale. In this paper, we employ Trueth Maintenance System (TMS) to the description support system for the management of alternatives of scenarios. This system enables the user to select the best solution more efficiently.

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  • Proposal of a Design Methodology for Modularity Based on Life Cycle Scenario and Geometric Information

    Inoue Yoichiro, Tonoike Keita, Umeda Yasushi, Fukushige Shinichi

    Proceedings of JSPE Semestrial Meeting   2008 ( 0 ) 875 - 876  2008

     View Summary

    In order to minimize environmental loads and costs during a whole life cycle of a product, adequate life cycle design as well as product design is indispensable. Modular design is an important elemental technique in life cycle design for improving, e.g., maintainability, upgradability, reusability, and recyclability. This paper proposes a method for determining modular structure by evaluating various attributes related to a product life cycle and geometric feasibility of modules. This paper also illustrates the prototype system that implements the proposed method and a case study of a ink-jet printer.

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  • Description and Evaluation of Scenarios for Sustainable Resource Circulation in Asian Countries

    Kishita Yusuke, Shinohara Tatsuro, Umeda Yasushi, Fukushige Shinichi, Fujimoto Jun

    Proceedings of JSPE Semestrial Meeting   2007 ( 0 ) 511 - 512  2007

     View Summary

    A considerable amount of resources, such as secondhand products and scrap metal, is traded among Asian countries. Such circulation should be transformed to sustainable circulation that satisfies the conditions of environmental soundness. In this study, we create various scenarios based on the idea of life cycle simulation, and then simulate them. This study aims to clarify conditions for the sustainable circulation through the simulation. As a case example, we show the circulation of a personal computer between Japan and China.

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  • Proposal of a Design Methodology for Product Simplification by Extracting Minimal Structure

    Fukushige Shinichi, Taniyama Shingo, Umeda Yasushi

    Proceedings of JSPE Semestrial Meeting   2007 ( 0 ) 507 - 508  2007

    DOI CiNii

  • Proposal of a Structural Description Method of Scenarios For Sustainable Society Simulation

    Proceedings of JSPE Semestrial Meeting   2007 ( 0 ) 1185 - 1186  2007

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  • Eco-busienss Idea Generation Support System Focusing on Process Flows

    Nishioka Takuya, Fukushige Shinichi, Umeda Yasusi, Kondo Sinsuke, Kurakawa Kei, Takada Shozo

    Proceedings of JSPE Semestrial Meeting   2007 ( 0 ) 1187 - 1188  2007

     View Summary

    In order to achieve the circuration type product life cycle, it is necessary to improve these businesses, in addition to designing appropriate product life cycle. The purpose of this study is to propose a methodology for helping a designer to generate business ideas to change existing business into environmentally conscious business (eco-business). To do so, this paper proposes a model of business based on the process flow of a product life cycle. The methodology helps to modify the model of an existing business into eco-business by applying the principles extracted from cases of eco-business. This paper also illustrates a prototype of eco-business idea generation support system and a case study with this system. The case study verified the feasibility of the proposed methodology.

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  • 3105 Proposal of Modular Design Methodology for Product life Cycle Design

    FUKUSHIGE Shinichi, TONOIKE Keita, UMEDA Yasushi

    The Proceedings of Design & Systems Conference   2007 ( 0 ) 272 - 275  2007

     View Summary

    Modular design is an important elemental design technique in life cycle design. Modularity may increase maintainability, upgradability, and so on. Appropriate modular structure differs according to applied life cycle options; e.g., while the modular structure for recycling should be based on material kinds, the structure for upgrading should be based on functions to be obsolete. However, from the technical aspect, since most existing methods employ connectivity of components and do not use geometric information, they may derive unrealistic modular structure. For solving these problems, this paper proposes a modular design methodology that utilizes life cycle option, geometric model, and connectivity of components. The life cycle options classify the components into some groups that should trace the same life cycle and the geometric information and the connectivity are employed to derive a feasible module structure within the group. This paper also illustrates a case study using a printer. This case study reveals that the methodology derives geometrically consistent modular structures flexibly depending on life cycle options.

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  • Proposal of a Design Methodology for Modularity Using Geometricl Information

    Keita Tonoike, Shinichi Fukushige, Yasushi Umeda

    Proceedings of JSPE Semestrial Meeting   2007 ( 0 ) 1181 - 1182  2007

     View Summary

    Currently, the importance of the modular design to realize the inverse manufacturing increases. In order to derive a feasible module structure of a product, not only environmental aspects, such as recycling and reuse, but also geometric information, such as position, volume and shape of components, bear important roles. Therefore, in this paper, we present a modular design methodology for life cycle engineering that proposes module structure by using information on geometry and product life cycle. The case study of an inkjet printer is provided to illustrate the methodology.

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  • 3103 Development of Eco-Business Idea Generation Support System

    NISHIOKA Takuya, FUKUSHIGE Shinichi, UMEDA Yasushi, KONDOH Shinsuke, KURAKAWA Kei, TAKATA Shozo

    The Proceedings of Design & Systems Conference   2007 ( 0 ) 264 - 267  2007

     View Summary

    In order to achieve the circulation type product life cycle, it is necessary to realize a good balance between environmental and economical efficiencies in business. The purpose of this study is to propose a methodology for helping a designer to generate business ideas to change existing business into environmentally conscious business (eco-business). The generation of business ideas can be divided into two stages, divergent thinking and convergent thinking. Therefore, this methodology is to support these thinking stages. In divergent thinking stage, the general rules for increasing and for reducing costs are used. In convergent thinking stage, from economical and environmental viewpoints, many business ideas are narrowed down.

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  • 1306 Proposal of a Methodology for Supporting Idea Generation of Eco-Businesses

    FUKUSHIGE Shinichi, KONDOH Shinsuke, UMEDA Yasushi, KURAKAWA Kei, TAKATA Shozo

    The Proceedings of Design & Systems Conference   2006 ( 0 ) 80 - 83  2006

     View Summary

    In order to solve the environmental issues, transition from the conventional business to environmentally conscious business (Eco-business) is eagerly required. In order to promote Eco-business, it is effective to support finding out Eco-business ideas. To do so, this paper takes an approach that provides business designer with general rules for environmentally consciousness and their prerequisites extracted from existing Eco-businesses. We collected 130 examples of Eco-businesses in Japan, investigated and classified them in order to extract their successful factors as general guidelines and checklists. As a result, four customer's values provided by Eco-businesses, eight rules that relates an environmental benefits of the society to the customer's value, and eight rules for reducing business costs are derived. A tool for planning for new eco-business is also proposed.

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  • Progressive Switching List Priority Algorithm for Visibility Determination

    FUKUSHIGE Shinichi, SUZUKI Hiromasa

    IPSJ SIG Notes   121   13 - 18  2005.11

     View Summary

    We propose an approach to visibility determination problem called the Progressive Switching List Priority (PSLP) algorithm. The visibility, in terms of back-to-front polygon visibility ordering, determined by updating the visibility list as the viewpoint moves. The update is performed by swapping sub lists in which all the polygons are precomputed to obtain the view independent priority order within the list. The binary-space partitioning (BSP) tree which finds the priority of a set of polygons with every node plane has been in use widely. However, the number of polygons grows significantly after the BSP splitting stage. As a result, it leads to growing the number of nodes and the cost of tests needed to traverse the BSP tree. The algorithm presented here is attempts to reduce these tests.

    CiNii

  • A Cyclic Data Structure for Determining the Face's Priority Order

    FUKUSHIGE Shinichi, SUZUKI Hiromasa

    IPSJ SIG Notes   118   7 - 12  2005.02

     View Summary

    This paper describes a depth sorting algorithm using a cyclic priority data structure. This priority cycle is constructed by face's obstruction relations seen from view cells distributed around 3D model. Compared with BSP tree method, priority cycle algorithm can search visibility order quickly without recursively traversing the tree structure.

    CiNii

  • Fast Rendering of Massive Model Using Voronoi Clustering.

    Proceedings of JSPE Semestrial Meeting   2003 ( 0 ) 29 - 29  2003

    DOI CiNii

  • マーカー付きワイヤーを用いた3次元形状入力のビジュアルインタフェース

    鴨島 里実, 鈴木 宏正, 福重 真一

    図学研究   37 ( 2 ) 33 - 36  2003

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    デザイナによる直感的な表現が可能な, 3次元形状モデルを計算機内に容易に構築する手法が多く研究されている.特に, 実在する3次元形状モデルを入力とし, その形状を計測し計算機内に復元する手法では, 入力モデルの形状を正確に把握でき, 直感的に自由形状を入力することが可能である.そこで, 本研究ではマーカー付きワイヤーを用いて入力モデルを作成し, その3次元形状を復元するシステムを提案する.ワイヤーで作成したモデルは, モデルの面によって不可視部分ができないため, 異なる2視点から撮影された画像のみから, その3次元位置を復元することができる.多方向からの画像が必要となるクレイモデルと比べて, 入力に時間がかからない, 特徴線の入力が可能である, といった利点がある.提案するシステムでは, 2台のCCDカメラによりモデルを撮影した画像を解析し, マーカーの2枚の画像上の座標から3次元座標値を計算する.そのため, 2枚の画像において同一の3次元点を示す点の探索アルゴリズムを考案する.実際に入力モデルを作成し, その3次元形状を復元する実験により, 意図した形状の入力が可能であることを示し, 有効性を確かめた.

    DOI CiNii

  • 対話的形状モデリングのための画像を用いた3次元入力法

    福重 真一, 鈴木 宏正

    精密工学会大会学術講演会講演論文集   2002 ( 1 ) 150 - 150  2002.03

    CiNii

  • 画像による曲線形状入力

    福重 真一, 鈴木 宏正

    精密工学会大会学術講演会講演論文集   2000 ( 2 ) 265 - 265  2000.09

    CiNii

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Awards

  • フロンティア業績表彰

    2018.11   日本機械学会 設計工学システム部門  

    Winner: 福重真一

  • Best Paper Award

    2018.06   10th CIRP Conference on Industrial Product-Service Systems (CIRP IPS2 2018)   Maintenance scenario evaluation for point-of-sale terminals based on lifecycle simulation and risk assessment

    Winner: Shinichi Fukushige, Yu Murai, Hideki Kobayashi

  • 総長奨励賞

    2015.05   大阪大学  

    Winner: 福重真一

  • Best Paper Award

    2011.08   Design Engineering Division, ASME   A Design Support System for Scenario-based Lifecycle Design

    Winner: Shinichi Fukushige, Eisuke Kunii, Kazuhiro Yamamoto, Yasushi Umeda

  • 奨励業績表彰

    2010.10   日本機械学会 設計工学システム部門  

    Winner: 福重真一

  • 山下記念研究賞

    2005.11   情報処理学会  

    Winner: 福重真一

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Presentations

  • 自動運転普及シナリオのライフサイクルシミュレーション

    井川雅貴, 村田秀則, 福重真一, 小林英樹

    Presentation date: 2019.03

    Event date:
    2019.03
     
     

Specific Research

  • 仮想現実環境を用いた製品使用時における消費者の充足性評価手法の開発

    2020  

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    持続可能な開発目標(SDGs:SustainableDevelopment Goals)の一つに「持続可能な消費と生産(SCP:Sustainable Consumption and Production)」がある.SCPの実現のためには,生産者による資源・エネルギーの消費量や環境負荷の低減だけでなく,消費者の充足性(Sufficiency)向上を考慮する必要がある.本研究では,工業製品による消費者の充足の程度を定量的に評価する手法を開発した.まず,仮想現実環境の中に生活空間を再現し,この環境の中で工業製品の感性評価を行った.この評価結果に基づき,基本ニーズに関する統計的なデータを用いて消費者の充足率を導出するプロセスを提案した.

 

Syllabus

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