Updated on 2023/02/06

写真a

 
MITOMO, Hitoshi
 
Scopus Paper Info  
Paper Count: 0  Citation Count: 0  h-index: 6

Citation count denotes the number of citations in papers published for a particular year.

Affiliation
Faculty of International Research and Education, Graduate School of Asia Pacific Studies
Job title
Professor

Concurrent Post

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

Education

  •  
    -
    1987

    University of Tsukuba   Doctoral Program of Socio-Economic Planning  

  •  
    -
    1987

    University of Tsukuba   Doctoral Program of Socio-Economic Planning  

  •  
    -
    1979

    Yokohama National University   Faculty of Management  

  •  
     
     

    University of Tsukuba   Master Program of Environmental Science  

Degree

  • 豊橋技術科学大学   博士(工学)

  • Doctor of Engineering

  • 筑波大学   学術修士

  • Master of Environmental Science

Research Experience

  • 1998
    -
    2000

    Senshu University, Professor

  • 1992
    -
    1998

    Senshu University, Associate Professor

  • 1988
    -
    1992

    Nagoya University of Commerce and Business Administration, Assistant Professor

  • 1986
    -
    1988

    JSPS Research Fellowship for Young Scientists

  • 1986
    -
    1988

    JSPS Research Fellowship for Young Scientists

  •  
     
     

    The Institute for Post and Telecommunications Policy, Visiting Researcher

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Professional Memberships

  •  
     
     

    Japan Association of IT Healthcare

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    Japanese Economic Association

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    Japan Society of Information and Communication Research

  •  
     
     

    Japan Association of Social Informatics

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    Japan Society of Public Utility Economics

  •  
     
     

    Japan Society of Transportation Economics

  •  
     
     

    日本テレワーク学会

  •  
     
     

    Regional Science Association International

  •  
     
     

    Japan Section of RSAI

  •  
     
     

    International Telecommunications Society

▼display all

 

Research Interests

  • Telecom Economics, ICT, IT, Information Society, Social Impact

Papers

  • The Internet of Things as an accelerator of advancement of broadband networks: A case of Thailand

    Tatcha Sudtasan, Hitoshi Mitomo

    Telecommunications Policy   42 ( 4 ) 293 - 303  2018.05

     View Summary

    The advanced development of broadband access is an inevitable step toward supportive daily lives and sustainable economic growth. However, the decisive outcome of the development relies heavily on the demand side. Consumer choice among advanced Internet broadband technologies will determine the achievement of the development. This study aims to illustrate that consumer decisions on choices of advanced Internet access are influenced by the emergence of the Internet of Things (IoT) applications. A bivariate probit model is applied to examine the effects of IoT, consumer's individual characteristics, and their current use of networks on their decision pertaining to the choice of advanced Internet access. Using Thailand as a case study, the result indicates that the emergence of IoT applications accelerates the adoption of both advanced mobile broadband (5G) and advanced fixed broadband (FTTH). This finding may help policy makers to optimize the future direction of the Internet infrastructure development in Thailand, and also countries in a similar stage.

    DOI

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    6
    Citation
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  • Effects of media information on collective resilience in a disaster—A case study of the crisis of stranded commuters in Tokyo during the 2011 Great East Japan earthquake

    John W. Cheng, Hitoshi Mitomo

    Asian Journal of Social Psychology   21 ( 1-2 ) 83 - 96  2018.03

     View Summary

    This article examines the relations between media information and collective resilience—collective solidarity behaviours that emerge from a crowd—in a disaster. It uses the crisis of stranded commuters in Tokyo during the 2011 Great East Japan Earthquake as a case study with data collected from an original survey. Using a cluster analysis and a multinomial logistic regression, it is found that media information is positively related to the characteristics of collective resilience, such as shared identity and mutual help. Specifically, among those who felt threatened by the disaster, people who had received more information from media, particularly from social media and mobile telephones, were more likely to display higher levels of these characteristics. It is contended that this is because media information can help people to feel more empowered and, thus, more willing to interact with and help others.

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    2
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  • Effects of media information on collective resilience in a disaster—A case study of the crisis of stranded commuters in Tokyo during the 2011 Great East Japan earthquake

    John W. Cheng, Hitoshi Mitomo

    Asian Journal of Social Psychology   21 ( 1-2 ) 83 - 96  2018.03

     View Summary

    This article examines the relations between media information and collective resilience—collective solidarity behaviours that emerge from a crowd—in a disaster. It uses the crisis of stranded commuters in Tokyo during the 2011 Great East Japan Earthquake as a case study with data collected from an original survey. Using a cluster analysis and a multinomial logistic regression, it is found that media information is positively related to the characteristics of collective resilience, such as shared identity and mutual help. Specifically, among those who felt threatened by the disaster, people who had received more information from media, particularly from social media and mobile telephones, were more likely to display higher levels of these characteristics. It is contended that this is because media information can help people to feel more empowered and, thus, more willing to interact with and help others.

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    2
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    (Scopus)
  • The underlying factors of the perceived usefulness of using smart wearable devices for disaster applications

    John W. Cheng, Hitoshi Mitomo

    TELEMATICS AND INFORMATICS   34 ( 2 ) 528 - 539  2017.05  [Refereed]

     View Summary

    Smart wearable devices offer much potential to assist citizens in disasters. To the general public, however, using these devices for disaster applications is still a novel concept. In disasters, most people are reluctant to rely on unfamiliar technologies. Thus, for these devices to become truly useful in disasters, it is important to understand factors that affect their acceptance by the public. Previous studies show that perceived usefulness is a clear antecedent of people's acceptance of smart wearable devices. However, the underlying factors that affect perceived usefulness itself are not clearly known. Thus, the aim of this study is to fill this gap, and by doing so, to derive some practical implications for solution developers and governments.
    This study used structural equation modelling to analyse survey data collected from 647 respondents in Japan. We found that the respondents' perceived usefulness of the current applications of smart wearable devices was a strong predictor of their perceived usefulness of using these devices for disaster applications. Although indirect factors such as the ownership of ICT gadgets and the usage of social media also had some influences, most of their.effects were mediated through increasing the respondents' perceived usefulness of the current applications. In other words, through appreciating the functions of the current applications of smart wearable devices, people can visualise the usefulness of these devices in disaster situations. That being said, we found that in parallel, people also had concerns on the privacy issues of these devices. These findings shed light on the promotion and development of this fast growing technology for disaster applications. (C) 2016 Elsevier Ltd. All rights reserved.

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    50
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  • The underlying factors of the perceived usefulness of using smart wearable devices for disaster applications

    Cheng, John W, Mitomo, Hitoshi

    Telematics and Informatics   34(2)   528 - 539  2017.05

  • Cultivation effects of mass and social media on perceptions and behavioural intentions in post-disaster recovery - The case of the 2011 Great East Japan Earthquake

    John W. Cheng, Hitoshi Mitomo, Tokio Otsuka, Stefan Y. Jeon

    TELEMATICS AND INFORMATICS   33 ( 3 ) 753 - 772  2016.04  [Refereed]

     View Summary

    Prior research has found that both mass and social media can play an influential role in post-disaster recovery. In particular, media information has been found to encourage people to support the recovery efforts. However, the mechanisms underlying this process have not been thoroughly investigated. Such knowledge is essential for both governments and non-governmental organisations so that they may apply these findings in post-disaster recovery. Thus, the purpose of this paper is to conduct an in-depth investigation on how mass and social media can influence people's perceptions of a disaster and their behavioural intentions with respect to post-disaster recovery activities.
    This study uses the 2011 Great East Japan Earthquake as a case study, and employs structural equation modelling with a data set of 2047 samples collected from an original Internet survey. Through the lens of cultivation theory, we find that mass and social media can play different roles and exert different influences on people's perceptions of the disaster. Mass media, specifically television is found to be the most influential, especially on those not directly affected by the disaster. Social media, on the other hand, although with a much weaker effect, can resonate more with those who were directly affected. Further, a positive perception of strong bonds in families and society as a result of media exposure is found to be the most effective in increasing the intention to participate in activities related to recovery such as boosting civic communications, taking altruistic actions and preparing for future disasters. The findings have implications for post-disaster recovery, in that they can provide a roadmap on how information via mass and social media can be used to motivate and connect the general public and the disaster victims. (C) 2015 Elsevier Ltd. All rights reserved.

    DOI

    Scopus

    41
    Citation
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  • Cultivation effects of mass and social media on perceptions and behavioural intentions in post-disaster recovery - The case of the 2011 Great East Japan Earthquake

    John W. Cheng, Hitoshi Mitomo, Tokio Otsuka, Stefan Y. Jeon

    Telematics and Informatics   33 ( 3 ) 753 - 772  2016  [Refereed]

     View Summary

    Prior research has found that both mass and social media can play an influential role in post-disaster recovery. In particular, media information has been found to encourage people to support the recovery efforts. However, the mechanisms underlying this process have not been thoroughly investigated. Such knowledge is essential for both governments and non-governmental organisations so that they may apply these findings in post-disaster recovery. Thus, the purpose of this paper is to conduct an in-depth investigation on how mass and social media can influence people's perceptions of a disaster and their behavioural intentions with respect to post-disaster recovery activities. This study uses the 2011 Great East Japan Earthquake as a case study, and employs structural equation modelling with a data set of 2047 samples collected from an original Internet survey. Through the lens of cultivation theory, we find that mass and social media can play different roles and exert different influences on people's perceptions of the disaster. Mass media, specifically television is found to be the most influential, especially on those not directly affected by the disaster. Social media, on the other hand, although with a much weaker effect, can resonate more with those who were directly affected. Further, a positive perception of strong bonds in families and society as a result of media exposure is found to be the most effective in increasing the intention to participate in activities related to recovery such as boosting civic communications, taking altruistic actions and preparing for future disasters. The findings have implications for post-disaster recovery, in that they can provide a roadmap on how information via mass and social media can be used to motivate and connect the general public and the disaster victims.

    DOI

    Scopus

    41
    Citation
    (Scopus)
  • Effects of new technologies on consumer’s choice of access to high-speed broadband internet

    Sudtasan Tatcha, Hitoshi Mitomo

    The Second Regional Telecommunications Society, India Conference    2015.12  [Refereed]

  • The role of media and ICT to motivate people to take post-quake recovery action: An evidence of the 'Pythagorean effect'1

    Hitoshi Mitomo, Tokio Otsuka, Mikio Kimura

    The Smart Revolution Towards the Sustainable Digital Society: Beyond the Era of Convergence     140 - 155  2015.07

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  • The Smart Revolution Towards the Sustainable Digital Society: Beyond the Era of Convergence

    Hitoshi Mitomo, Hidenori Fuke, Erik Bohlin

    The Smart Revolution Towards the Sustainable Digital Society: Beyond the Era of Convergence     1 - 386  2015.07

     View Summary

    The objective of this book is to present a comprehensive evaluation of the smart revolution, including its social and economic impacts. It proposes a modern framework to help assess how recent information and communication technologies (ICTs) can contribute to societies as a whole. The authors offer a guide to how advanced network technologies have led to a greater variety of applications and social networking services. These allow people to connect with each other both at a more personal and global level, and will ultimately herald a new era of ICTs that will shape the "digital society".

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  • Introduction

    Bohlin, Erik, Fuke, Hidenori, Fuke, Hidenori, Mitomo, Hitoshi

    The Smart Revolution Towards the Sustainable Digital Society: Beyond the Era of Convergence     1 - 11  2015.07  [Refereed]

    DOI

  • Media’s Effects on People’s Perceptions and Intentions in Post-Disaster Recovery – a Case Study of the Great East Japan Earthquake

    Cheng, J. W, Mitomo, H, Otsuka, T, Jeon, S. Y

    26th European Regional ITS Conference    2015.06  [Refereed]

  • The Role of ICT and Mass Media in Post-disaster Recovery – A Two Model Case Study of the Great East Japan Earthquake

    Cheng, J. W, Mitomo, H, Otsuka, T, Jeon, S. Y

    Telecommunications Policy   39 ( 6 ) 515 - 532  2015.03  [Refereed]

  • A Proposal for a Sustainable Broadband Service in Rural Japan

    MITOMO Hitoshi

    Journal of Information and Communication Research   33 ( 1 ) 37 - 46  2015

     View Summary

    This paper outlines a proposal for a new framework for the provision of a universal service aimed at solving the various issues inherent in community informatization, and goes on to look at the advantages and disadvantages of the proposed framework and review its feasibility. In order to ensure that telecommunications services are universally accessible, in less favored areas, a universal service is currently provided for analog landline telephones by using a universal service fund system to supplement a portion of the costs of the qualified telecommunications carriers. With the development of optical networks, optical IP phones have also been included as a technology for which universal service is provided, but at the same time dependence on landline phones is decreasing due to the popularity and convenience of cell-phones. As this is accompanied by developments such as the fact that almost 100% of Japanese households now have broadband access, there is a pressing need for radical review of the system from a technical perspective. Additionally, given that consumers organizations and other bodies strongly oppose the fact that carriers pass on the burden of their universal service fund contributions so that the full amount of contributions is shared among telephone number users, it is also necessary to reconsider the approach to how cost burdens are shared. At the same time, while 2.5 GHz band regional Broadband Wireless Access (BWA) has been made available for providing broadband in rural areas, its level of usage is low and ensuring its utilization is a matter of urgency. This paper will deal with these issues collectively, and propose a framework for maintaining and developing community informatization.

    CiNii

  • Analysis of the Internet users incentives to conduct "multi-task usage"

    KONDO Masanori, NAKAMURA Akihiro, MITOMO Hitoshi

    Journal of Information and Communication Research   32 ( 4 ) 35 - 44  2015

     View Summary

    In recent years, it has been observed that many internet users engage in so-called "multi-task usage" or accessing the Internet while doing something else such as watching TV, or listening to the radio or music. This phenomenon is of particular interest for the way in which time is used concurrently for different tasks but it is difficult to estimate the benefit derived from this activity by using an ordinary maximizing utility framework under budget constraints including time allocation. In this study, we consider the "multi-task usage" of the Internet as a "new service" which becomes available because of new developments in technology. We used methods of evaluating a consumer surplus when there is a new product or service in the market. Based on the data available, our estimate indicates that the surplus amounts to about JPY 3,500 a day for an average user and that this can be greater within the current smart phone usage environment.

    DOI CiNii

  • Provision of Universal Broadband Service in Japan: A Policy Challenge toward a Sustainable ICT Infrastructure

    Hitoshi Mitomo

    20th Biennial Conference of the International Telecommunications Society    2014.12  [Refereed]

  • Understanding broadband under-utilization in Japan

    Bourna Maria, Hitoshi Mitomo

    20th Biennial Conference of the International Telecommunications Society    2014.12  [Refereed]

  • Spectrum policy and innovation: A Japanese perspective

    Bourna Maria, Mitomo Hitoshi

    25th ITS European Conference, Brussels    2014.06  [Refereed]

  • The Effect of Simultaneous Multi-Screening on the Users’ Knowledge of Social Issues in a Highly Mediated Society

    Cheng, J. W, Otsuka, T, Mitomo, H

    25th ITS European Conference, Brussels    2014.06  [Refereed]

  • The Effects of the Use of Web 2.0 Applications and Television on Social Capital in Post-Disaster Recovery:A Case Study of the Great East Japan Earthquake

    CHENG John William, JEON Stefan Yonggyun, OTSUKA Tokio, MITOMO Hitoshi

    Journal of Information and Communication Research   32 ( 2 ) 51 - 66  2014

     View Summary

    The aim of this paper is to investigate the effects of the use of new and traditional media in post-disaster recovery after the Great East Japan Earthquake using data collected from the disaster area in March 2013. This study found that the use of both new (Web 2.0 applications) and traditional (informative television programmes) media can create some positive but indirect effects on the development of social capital elements that are critical for post-disaster recovery such as bonding trust, bridging networks and civic participation. These effects are mediated by online civic participation, which itself can be encouraged by the complementary use of television and Web 2.0 applications. By showing the effects and the mechanisms of the use of media on social capital development, the findings have some important implications for researchers as well as authorities and NGOs that are working on post-disaster recovery.

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  • User benefits and operator costs of mobile number portability in Japan and impact on market competitiveness

    Tokio Otsuka, Hitoshi Mitomo

    TELECOMMUNICATIONS POLICY   37 ( 4-5 ) 345 - 356  2013.05  [Refereed]

     View Summary

    This paper aims to review the process of mobile phone operators agreeing to introduce mobile number portability (MNP) in Japan. A study group formed by the Ministry of Internal Affairs and Communications estimated the proportion of MNP users and analyzed the user benefits and associated costs to introduce MNP. Owing to the particular market structure and technology available, MNP was expected to yield a larger benefit in the Japanese mobile market than that seen in other countries. Based on the results of the research reviewed with respect to the market situation one year after introducing MNP, the increased competition in the mobile phone market was onfirmed by decreasing call charges and a reduction in the share of the dominant operator. (C) 2012 Elsevier Ltd. All rights reserved.

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    5
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  • Rich information on environmental issues and the poor reflections on consumers' green actions: A behavioral economic approach

    Hitoshi Mitomo, Tokio Otsuka

    TELEMATICS AND INFORMATICS   29 ( 4 ) 400 - 408  2012.11  [Refereed]

     View Summary

    In this study, some obstacles in using information and communication technology (ICT) for public relation activities regarding environmental protection are reviewed. While there are many ways of dispersing information on environmental hazards, people may not be very responsive. In this study, we hypothesize that the obstacles to effective information dispersion can be attributed to factors such as limited memory retention, projection bias, and urgency of the problem, which are major concepts of behavioral economics. An empirical survey supports this hypothesis and emphasizes the need to overcome these obstacles in order to improve the efficiency of dispersing information on the environment. (C) 2012 Elsevier Ltd. All rights reserved.

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    6
    Citation
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  • Impact of Mobile Twitter Usage on Social and Interpersonal Relations: A Comparison of Mobile Twitter Usage among the younger generations in Japan and Korea:A Comparison of Mobile Twitter Usage among the younger generations in Japan and Korea

    KIM AeRee, MITOMO Hitoshi

    Journal of Information and Communication Research   29 ( 1 ) 57 - 70  2011

     View Summary

    As the smartphone market grows rapidly, communication via smartphones is getting more popular and widespread in the world. Among others, use of mobile based Social Networking Services (SNS) has become a major communication method even with mobile phones. Especially, the Twitter, 140 character text-based SNS, well matches with the smartphone characteristics of instant Internet access with limited bandwidth, thus being the center of mobile based SNS usage especially by the young generation in East Asian metropolises such as Seoul and Tokyo. This paper explores the influence of smartphonebased Twitter usage by these young consumers through their smartphones on their social and interpersonal relations. It analyzes how the usage affects the relationships among college students by applying a cause-effect model with several latent factors, namely the usage of mobilebased Twitter, social network building, individual factors and social influence, which are composed of several observable variables. A structural equation model successfully visualized the correlations among the latent and observable variables. The result shows that the usage of smartphone-based Twitter in the young generation in Seoul and Tokyo has a limited influence on the social and interpersonal relationships in real life, and that persons having expertise have more social influence than celebrities having more Twitter followers.

    CiNii

  • An Empirical Analysis of the Factors that Influence the Thai Customers’ Decisions to Switch Mobile Operators after the Introduction of Mobile Number Portability

    Manit Satitsamitpong, Hitoshi Mitomo

    Journal of Information & Communication Research   96 ( 28 ) 77 - 92  2011

  • モバイルツイッターがユーザーの関係性および社会に与える影響-日韓大学生ユーザーの利用に関する比較

    金エリ・三友仁志

    情報通信学会   ( 98 ) 57 - 70  2011

  • 地上デジタル放送移行の経済効果

    三友 仁志

    情報通信学会誌   28 ( 1 ) 66 - 69  2010.05

    CiNii

  • Provision of universal service and access over IP networks in Japan

    Hitoshi Mitomo, Nobuyuki Tajiri

    TELECOMMUNICATIONS POLICY   34 ( 1-2 ) 98 - 109  2010.02  [Refereed]

     View Summary

    Universal service is governed by a regulatory framework that guarantees nationwide access to basic telephone service over the public switched telephone network (PSTN). The ongoing network migration to IP networks, however, poses the question of how the existing framework Would accommodate this change.
    Taking the case of Japan, this paper presents an overview of Japan's universal service system under the network migration and argues the importance of assessing consumer preference for universal service in adapting the system to this new environment. After describing the existing system including the universal service fund and the impacts of the transition to IP networks, the government's responses to cope with the change are reviewed. A system of universal access is proposed which is designed to ensure access rather than a specific service. To realize a new regulatory framework for universal access, studies will be necessary on issues such as the scope of universal access and ensuring sufficient compensation. Emphasizing the importance to evaluate consumer preference or willingness-to-pay for universal access, an empirical analysis in an experimental framework is conducted, which examines whether consumers are willing to accept the additional burden of sustaining universal access if they are well informed about the issue. Finally, challenges for future studies on universal access are referred. (C) 2009 Elsevier Ltd. All rights reserved.

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  • Provision of Universal Service and Access over IP Networks in Japan

    Hitoshi Mitomo, Nobuyuki Tajiri

    Telecommunications Policy   34 ( 1-2 ) 98 - 109  2010.02

  • Preference for Flat-Rate Media Access Fees: A Behavioural Economics Interpretation

    Hitoshi Mitomo, Tokio Otsuka

    The Media Industries and their Markets: Quantitative Analyses (P.Y. Badillo and J.B. Lesourd Eds)     155 - 170  2010

  • Journal of Information & Communication Research

    Hussein Nassar, Hitoshi Mitomo

    Studies in Regional Science   40 ( 4 ) 1061 - 1072  2010

  • 電気通信分野におけるユニバーサルサービスの便益評価

    田尻信行, 大塚時雄, 三友仁志

    公益事業研究   61 ( 1 ) 59 - 74  2009

  • A Behavioral Economic Interpretation of the Preference for Flat Rates: A Case of Post-Paid Mobile Phone Services

    Hitoshi Mitomo, Tokio Otsuka, Kiminori Nakaba

    Telecommunication Markets:Drivers and Impediments (B. Preissl, J. Haucup and P. Curwen eds)    2009

  • 超高速情報通信網(FTTH)構築に関する費用便益分析の試み

    高地圭輔, 大塚時雄, 三友仁志

    地域学研究   38 ( 2 ) 395 - 414  2008.10

  • 情報通信及び交通サービスにおける定額料金プリファレンスの実証的分析

    三友仁志, 大塚時雄, 永井研, 中場公教

    地域学研究   38 ( 2 ) 311 - 330  2008.10

  • 条件不利地域における情報格差と是正の方向性

    三友仁志

    自治フォーラム   581   17 - 24  2008.02

  • プロスペクト理論を適用した情報通信における定額料金プリファレンスの存在に関する実証的分析

    中場公教, 大塚時雄, 三友仁志

    公益事業研究   59 ( 3 ) 1 - 10  2008.01

    CiNii

  • セキュリティ被害に対するネットワーク利用者の主観的評価額の算定

    桜井直子, 大塚時雄, 三友仁志

    公益事業研究   59 ( 2 ) 11 - 20  2007.11

    CiNii

  • 情報通信における定額料金プリファレンスに関する予備的考察

    三友仁志, 大塚時雄, 永井研

    公益事業研究   58 ( 4 ) 43 - 52  2007.03

    CiNii

  • 個人情報漏えい事故における業種別傾向の抽出に関する研究

    桜井直子, 三友仁志

    公益事業研究   58 ( 4 ) 53 - 62  2007.03

    CiNii

  • マスメディア集中排除原則見直し議論に関する実証分析

    植田康孝, 三友仁志

    日本社会情報学会誌   19 ( 1 ) 59 - 69  2007.03

     View Summary

    Commercial broadcasting stations in Japan are licensed to broadcast in the area ; however, there is an ongoing debate over consolidating the industry by relaxing the principle of abatement of mass media concentration. In other words, in response to the development of digitalization, local broadcasting stations are reconsidering their business efficiency by opting for large-scale operations. For the broadcasting industry to pursue economy of scale, the stations could either increase their advertising revenue by providing high-quality programs (expansion of operational scale) or increase their share of audience household by expanding the broadcasting area. Increasing the advertising revenue requires programming designed to attract larger audiences, which seems to be costly. The expansion of operational scale can be achieved through merging other stations in neighboring prefectures. Consequently, the same content could be simultaneously distributed to a larger number of households. While there is a concern that spatial expansion (expansion of the broadcasting area) may result in a loss of localism, the positive aspect includes elimination of regional differences in information literary for those locals unable to receive such information and entertainment that people in other regions enjoy, due to the limited number of channels available for viewing. For spatial expansion by the consolidation of the broadcasting stations to be a measure to improve operational efficiency, it would be necessary that the industry shows the economy of scale. This paper will empirically test the economy of scale in terms of spatial expansion in the broadcasting stations.

    CiNii

  • eコマースの普及が消費者の購買行動に与える影響---書籍購入における物理的移動の情報通信への代替可能性に関する実証的分析

    染谷広幸, 大塚時雄, 三友仁志

    地域学研究   37 ( 4 ) 1157 - 1172  2007

     View Summary

    In this paper, we analyze the impact of information and communications technology (ICT) on the lives of consumers as well as the cause for differences in ICT usage between e-commerce and physical stores. One characteristic of ICT is the small marginal cost of distance and data space. It connects people at a uniform cost to and from any area around the world and makes it possible to use mega digital data at a minimal cost. The quantity of merchandise and information of shops are different between e-commerce and physical stores.<br> Thus in this study, we analyzed the characteristics of e-commerce, user/reader in terms of personal and business, and the impact of information acquired from websites on e-commerce. For this purpose, we used a covariance structure analysis to determine the relationship of latent factors affecting the purchase of books from e-commerce and physical shops.<br> As a result, we found that obtaining information about e-commerce shops does not increase the usage of e-commerce. Moreover, the latent factor of essential information that is obtained from choosing books increases the purchase of goods in the real stores. On the other hand, information about reputation increases purchase of goods through the e-commerce.<br><br>JEL Classification: D12

    DOI CiNii

    Scopus

  • Influence of Product Type on Mode of Information Flow in Malaysian Research Institutes

    Md. Nor, Hayati Bin Tahir, Hitoshi Mitomo

    Studies in Regional Science   37 ( 1 ) 41 - 47  2007

  • Factors influencing the usage of mobile phones in east asia : A comparative study based on the asian metropolitan mobile survey

    Hitoshi Mitomo, Norio Sanbonmatsu

    Studies in Regional Science   37 ( 2 ) 455 - 469  2007

     View Summary

    This paper explores similarities and differences in mobile phone usage between subscribers from five major metropolitan cities across East Asia. Technological advances have been widely adopted by consumers throughout this region, most recognizably via the mobile platform with mobile Internet, email, video-conferencing, e-commerce, and other types of mobile phone-related services becoming critical factors in the daily lives of East Asian consumers. Those living in urban areas have benefited most from these new technologies and services, and more specifically, younger generations have adopted mobile phone-related services far faster than their older counterparts. However little research to date has explored the similarities and differences between mobile phone usage behavior of younger, urban consumers across this region. This paper presents the results of a comparative study of mobile consumer behavior of university students across five major cities including Beijing, Hong Kong, Seoul, Taipei and Tokyo. We found that the dependency of young people on mobile phone services was similar among the cities surveyed, however the specific factors influencing their usage and the communications technologies that they used varied significantly across markets. © 2007, JAPAN SECTION OF THE REGIONAL SCIENCE ASSOCIATION INTERNATIONAL. All rights reserved.

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  • Comment: On Mobility in Japan

    Hitoshi Mitomo

    BEYOND MOBILITY(Per Andersson, Ulf Essler and Bertil Thorngren eds)     393 - 407  2007

  • 個人情報保護法下における情報通信技術の活用とセキュリティ対策 ---医療を中心に---

    三友仁志, 大槻明

    ITヘルスケア   1 ( 1 ) 4 - 13  2006.09

     View Summary

    Act on the Protection of Personal Information was enforced in April 2005, in Japan. It aims to support and promote the use of ICT by protecting personal information that is collected, used or disclosed in certain circumstances. Its effect, however, seems to be still unsatisfactory because the number of entities which contravene the Act has not decreased even after its enforcement.This paper distinguishes four categories of the accidents. Most of them can be chalked up to carelessness of the entities or an inside job although computer hacking is still regarded as a major thread. Security technology is effective but not perfect to prevent illegal access from happening because it is almost useless to protect personal information from authorized but malicious use or access from inside. In addition, cost-effectiveness mut be considered when an entity takes measures of personal information protection. Thus, this paper proposes a tracing and recording system of computer network access as an efficient post-accident tool for tracking back both authorized and unauthorized access.

    DOI CiNii

  • 利用者の異質性を考慮した携帯電話の番号ポータビリティ利用者便益の考察

    大塚時雄, 三本松憲生, 森祐治, 実積寿也, 三友仁志

    公益事業研究   57 ( 4 ) 39 - 48  2006.03

    CiNii

  • Impact of Mobile Usage on the Interpersonal Relations

    Kim, Ae-Ree, Hitoshi Mitomo

    COMMUNICATIONS &amp; STRATEGIES   61   79 - 94  2006

  • Economies of Scale, Scope and Vertical Integration in the Provision of Digital Broadcasting in Japan

    Hitoshi Mitomo, Yasutaka Ueda

    Digital Broadcasting(in M. Cave and K. Nakamura eds)    2006

  • The Impact of Knowledge Enrichment through ICT Usage on Innovation Activity in the Malaysian Public Sector

    Md. Nor, Hayati bin Tahir, Hitoshi Mitomo

    Studies in Regional Science,   35 ( 2 ) 369 - 382  2005

  • Knowledge Captured as an Innovation Factor: The Application and Usage of ICT in the Malaysian Public Sector

    Md. Nor, Hayati bin Tahir, Hitoshi Mitomo

    INTAN Management Journal   7 ( 1 ) 239 - 255  2005

  • 携帯電話の番号ポータビリティ利用の評価に関する選択確率モデルの適用

    大塚時雄, 実積寿也, 三友仁志

    情報通信学会誌   76 ( 22 ) 65 - 77  2005.01

  • 情報通信技術が買物交通需要パターンに与える影響の分析

    大塚時雄, 染谷広幸, 実積寿也, 三友仁志

    地域学研究   34 ( 1 ) 265 - 284  2004.10

  • The Diffusion of ICT in Urban Malaysia: How Nature of Job Influencing the Usage of ICT among the Urban Working Population

    Tengku Mohamed Faziharudean, Hitoshi Mitomo

    地域学研究   34 ( 1 ) 247 - 264  2004.10

  • 情報化投資による日本企業の生産性向上に対する組織構造改革と人的資本形成の相乗効果に関する実証分析—企業アンケートデータを基礎として—」

    唐澤 徹, 実積寿也, 三友仁志

    公益事業研究   56 ( 1 ) 25 - 33  2004.07

  • わが国のIT関連投資意欲に関する実証的研究

    田口 祥一, 三友 仁志

    公益事業研究   56 ( 1 ) 47 - 56  2004.07

    CiNii

  • 放送業界における規模の経済性の検証

    植田康孝, 高橋 秀樹, 三友 仁志

    情報通信学会学会誌   21 ( 2 ) 46 - 52  2004.01

  • 放送業界における垂直分離とネットワーク・シェアリングに関する実証的分析

    植田康孝, 三友仁志

    地域学研究   33 ( 3 ) 159 - 172  2003.12

  • 情報通信技術の進展が個人間のコミュニケーション・ネットワークに与える影響のシミュレーション分析

    大塚時雄, 三友仁志

    日本コンピュータサイエンス学会誌   8 ( 1 ) 5 - 18  2003.12

  • Vertical Separation between Program Production and Transmission: Network Sharing in the Japanese Broadcasting Industry

    Hitoshi Mitomo, Yasutaka Ueda

    COMMUNICATIONS &amp; STRATEGIES Special Issue on ICT Market Dynamics and Development Models in Asia   Issue 52   239 - 255  2003.12

  • 地上デジタル放送を活用した行政サービスの可能性

    植田康孝, 三友仁志

    日本社会情報学会年会誌   15 ( 2 ) 53 - 64  2003.09

     View Summary

    Provided "data broadcasting" will be interactive and friendly to end-users (i.e., digital TV terminals for bidirectional communication and easy-to-use remote controllers to gam access to administrative and community information), terrestrial digital broadcasting is expected to become the mainstream method for providing administrative services to local residents. The municipalities are also moving toward an e-local government, and are contemplating using data broadcasting as a means of delivering to their residents community information, reservation information and guides to public facilities, health consultation, disaster prevention information, and other administrative information. The reality, however, is that 100% access to the Internet is practically not feasible, and in fact, it will be difficult for it to even become the norm. On the contrary, due to its anticipated dissemination to almost all households, digital televisions would be effective in widely communicating information, especially that critical to resident safety and relief such as natural disasters. Furthermore, it would contribute to bridging and narrowing the digital divide (difference between the "information rich" and the "information poor"). By the time local broadcasting stations commence their digitalized terrestrial broadcasting in year 2006, the municipalities are expected to complete their transition to e-local governments. In effect, a wealth of information will be transmitted over the Internet. It would therefore be important to make the contents available on the television. However in broadcasting, which is characterized by simultaneous transmission of uniform information, the design of the contents requires technical attention and knowledge. In this respect, it is preferable the structure of "local information center" be adopted and jointly operated by several broadcasting stations. The rationale behind this is that development of the contents must take into account publicity and the nature of mass media, and thus should be clearly differentiated from "broadcasting" over the Internet. As a precondition, we would like to investigate whether the broadcasting industry, by jointly operating and subdividing the broadcasting domain by region, is a type of business that can increase its overall efficiency.

    CiNii

  • 分離は融合のはじまり、、年11月、

    三友仁志

    オペレーションズ・リサーチ   47 ( 11 ) 722 - 728  2002.12

  • The Impact of E-Commerce on Transportation Demand in Tokyo Area

    Proceedings of the 4th International Regional Science Association International Conference    2002.07

  • 放送業界における統合と分離に関する実証的分析

    平成14年度情報通信学会年報   pp.13-25  2002

  • 放送業界における統合と分離に関する実証的分析

    情報通信学会年報   平成14年度年報、pp.13-25  2002

  • 分離は融合のはじまり

    オペレーションズ・リサーチ   Vol.47, No.11, 722-728ページ  2002

  • わが国企業および産業におけるIT投資の効果発現メカニズム---日本型シナリオの特徴の探索---

    地域学研究   第32巻第1号、231-244ページ  2002

  • わが国企業および産業におけるIT投資の効果発現メカニズム--日本型シナリオの特徴の探索、.

    地域学研究   第32巻第1号、pp.231-244  2002

  • IT Investment in Japan: A Look at the Factors Leading to Underperformance

    Proceedings of ITS 14th Biennial Conference    2002

  • Explaining Digital Divide as a Consequence of Uneven Digital Opportunities between Urban and Rural Areas: A Case of Internet Usage among Senior High School Students in Kelantan, Malaysia

    Tengku Mohamed Faziharudean, Hitoshi Mitomo

    Studies in Regional Science   33 ( 3 ) 287 - 298  2002

     View Summary

    This paper is based on a questionnaire survey that was conducted on senior high school students (both in urban and rural areas) in the State of Kelantan, Malaysia. Our objective is to present the causal relationship using Covariance Structural Analysis of the factors that are perceived to encourage the teenagers to use the Internet service. Based on the data collected from the survey, we can also make a comparison on the levels and patterns of the Internet usage between the urban and rural teenagers in Kelantan. Then, we come up with recommendations on how to address the issue of the diffusion of Internet usage, especially on how to bridge the digital gap between the urban and rural population. © 2002, JAPAN SECTION OF THE REGIONAL SCIENCE ASSOCIATION INTERNATIONAL. All rights reserved.

    DOI

    Scopus

    1
    Citation
    (Scopus)
  • The Political Economy of Pricing: Comparing the Efficiency Impacts of Flat Rate vs. Two-Part

    TariffsCOMMUNICATIONS &amp; STRATEGIES special issue: Networks, Information goods and market efficiency   Issue 44, pp.55-70  2001.10

  • 定額料金制導入の経済学的評価─二部料金制からの移行に関するシミュレーション

    平成13年度情報通信学会年報   pp.39-54  2001

  • 定額料金制導入の経済学的評価-二部料金制からの移行に関するシミュレーション-

    情報通信学会年報(平成12年度)   /,39-54  2001

  • 情報通信技術によるSustainable Societyの実現可能性とわが国における情報化投資の現状

    平成12年度情報通信学会年報   pp.1-14  2001

  • 情報通信技術によるSustainable Societyの実現可能性とわが国における情報化投資の現状

    情報通信学会年報(平成12年度)   /,1-14  2001

  • Telework and Telecommuting in Japan: Sustainability and Macroeconomic Perspectives.

    Hitoshi Mitomo

    K. Nakamura and K. Agata (eds), Convergence of Telecommunications and Broadcasting in Japan, Curzon    2001

  • ICTs and Sustainability: the Managerial and Environmental impacts in Japan

    Foresight   03(02), pp.103-112  2001

  • The Political Economy of Pricing: Comparing the Efficiency Impacts of Flat Rate vs. Two-Part Tariffs

    COMMUNICATIONS &amp; STRATEGIES special issue: Networks, Information goods and market efficiency   Issue 44, pp.55-70  2001

  • On the Feasibility of Flat Rate Tariffs in Place of the Optimal Two-Part Tariff

    JSICR Annual Report   /,39-54  2001

  • ICTs and Sustainability: the Managerial and Environmental impacts in Japan

    Foresight   03(02), pp.103-112  2001

  • ICTs and Sustainability : The Managerial and Environmental Impact in Japan

    Foresight   3/2,103-112  2001

  • Contributions of ICTs to a Sustainable Society and the Status Quo of the Japanese ICT Investment

    JSICR Annual Report   /,1-14  2001

  • Telework in Japan Sustainability and Macroeconomic Perspectives: A Case of Transport Congestion

    Symposium on Convergence of Telecommunications and Broadcasting in Japan, United Kingdom and Germany: Technological Change, Public Policy and Market Structure/Waseda University    2000.03

  • Impact of telecommuting on mass transit congestion: the Tokyo case

    Telecommunications Policy/Elsevier   23,pp.741-751  2000.03

  • Contributions of ICT to sustainable information society: Managerial, macroeconomic, and environmental impacts in Japan

    the Conference on a Sustainable Information Society for the 21st Century, Brussels    2000.02

  • テレワーク/テレコミューティングによる交通混雑低減効果とその実現可能性-日米比較を通じて-

    交通学研究   /43  2000

  • Telework/Telecommuting and the Possibility of Reducing Congestion : A Comparison between the United States and Japan

    Annual Report on Transportation Economics   /43  2000

  • Telework in Japan-Sustainability and Macroeconomic Perspectives : A Case of Transport Congestion

    Symposium on Convergence of Telecommunications and Broadcasting in Japan , United Kingdom and Germany    2000

  • Impact of telecommuting on mass transit congestion : the Tokyo case

    Telecommunications Policy   23/,741-751  2000

  • Contribution of ICT to Sustainable Information Society : Managerial , Macroeconomic , and Environmental Impacts in Japan

    The Conference on a Sustainable Information Society for the 21st Century    2000

  • 情報通信における外部性と最適料金体系—両端課金の可能性について—

    地域学研究/日本地域学会   29;3,pp.169-183  1999.12

  • テレワーク/テレコミューティングによる交通混雑低減効果とその実現可能性—日米比較を通じて—

    日本交通学会研究報告会    1999.10

  • Information Technology for Sustainable Societies—Public Policy Perspectives in Japan: A Case of Telework

    IPTS Report, Special Issue on Sustainable Information Societies in Global Perspective/IPTS   32,pp.24-31  1999.03

  • 情報通信における外部性と最適料金体系-両端課金の可能性について-

    地域学研究   29/3,169-183  1999

  • Information Technology for Sustainable Societies-Public Policy Perspectives in Japan : A Case of Telework

    IPTS Report, the European Commission   32  1999

  • Information Technology for Sustainable Societies

    16th Pacific Regional Science Conference    1999

  • Externality Effects on the Demand and Pricing for Telecommunications

    Studies in Regional Science   29/3,169-183  1999

  • テレコミューティングの私的効果と社会的効果

    情報通信学会年報   8/,1-13  1997

  • Private and Social Effects of Telecommuting

      8/,1-13  1997

  • Externality Effects on the Demand and Pricing for Telecommunications

    Proceedings of the 15th Pacific Regional Science Conference    1997

  • 米国におけるテレコミューティングの現状

    郵政省郵政研究所月報   99/,60-79  1996

  • テレコミューティングの我が国における影響の分析

    郵政省郵政研究所ディスカションペーパー   /1996-5  1996

  • Present State of Telecommuting in the U. S.

      99/,60-79  1996

  • Analysis on the economic effect of telecommuting

      /1996-5  1996

  • Optimal Transport Capacity for Regional Development

    Occasional Papers of the Institute for Commercial Sciences   /104,1-22  1995

  • 通話需要関数の推定と最適料金体系の数量的分析

    地域学研究   24/1,91-115  1994

  • Telecommunications Demand Function and the Optimal Price Schedule Based on Demand Externalities

      24/1,91-115  1994

  • 日本の通話構造の数量分析

      2  1993

  • Quantitative Analysis of Japanese Telecommunications Structure

    Information Science and Applied Mathematics   2  1993

  • 日本における通話構造の定量的分析-通話トラヒックデータに依拠して-

    地域学研究   23/1,109-130  1992

  • 情報通信における加入者集合の均衡

    地域学研究   22/1  1992

  • Telephone Communication Structure in Japan

    Studies in Regional Science   23/1,109-130  1992

  • On the Equilibrium Subscriber Set of Telecommunications Service

    Studies in Regional Science   22/1  1992

  • Heterogeneous Subscribers and the Optimal Two-part Tariff of Telecommunications Service

      35/2  1992  [Refereed]

  • 情報通信市場の自由化と経済的効率性〜長距離電気通信事業における参入と料金政策〜

    地域学研究   20/1  1990

  • Economic Efficiency of the Deregulation of Telecommunications Market

    Studies in Regional Science   20/1  1990

  • Optimal Pricing of Telecommunications Service in an Advanced Information-Oriented Society

    Hitoshi Mitomo

    Information Technology: Social and Spatial Perspective    1988

  • 高速道路の供用による流通経済の合理化効果の計測

    交通学研究   32  1988

  • 観光旅客流動の変化による大規模交通プロジェクトの便益の計測

    高速道路と自動車   31/4  1988

  • Measurement of Recreation Benefits to Be Derived from the Honshu-Shikoku Bridge Project

    Expressways and Automobiles   31/4  1988

  • Estimation of the Effect of Expressway Networking on a Physical Distribution System

    Annul Report on Transportation Economics   32  1988

  • 計画編成モデルによる国鉄経営形態の比較検討

    交通学研究   30  1987

  • 外部性の存在に基づく情報通信の最適価格形成

    地域学研究   17  1987

  • Optimal Two-Part Tariff of Telecommunications Service

    Studies in Regional Science   17  1987

  • Feasibility Study on the Break-up and Privatization of Japanese National Railways

    Annual Report on Transportation Economics   30  1987

  • 情報通信市場の経営経済学的考察

    高速道路と自動車   28/5  1985

  • A Managerial-Economic Analysis of Telecommunications Markets

    Expressways and Automobiles   28/5  1985

  • 総合交通体系モデルと料金シミュレーション-機会費用原理による交通サービスの評価-

    交通学研究   27  1983

  • A Comprehensive Transportation System Model and Rate Simulation

    Annual Report on Transportation Economics   27  1983

  • The role of ICT in collective resilience in a time of crisis

    Cheng, J. W, Mitomo, H

    ITS 2015 Regional Conference, Los Angeles    [Refereed]

  • Impact of Telecommuting in Japan : Implications for Mass Transit Congestion

    5th World Congress of the Regional Science Association International  

  • Cloud Computing Adoption and Determining Factors in Different Industries: A Case Study of Thailand"

    Chutipong Keesookpun, Hitoshi Mitomo

    International Journal of Information Technology and Management  

▼display all

Books and Other Publications

  • The Smart Revolution Towards the Sustainable Digital Society: Beyond the Era of Convergence

    Hitoshi Mitomo( Part: Joint editor)

    Edward Elgar  2015.09 ISBN: 1784710032

     View Summary

    The objective of this book is to present a comprehensive evaluation of the smart revolution, including its social and economic impacts. It proposes a modern framework to help assess how recent Information and Communication Technologies (ICTs) can contribute to societies as a whole.

  • The Smart Revolution Towards the Sustainable Digital Society: Beyond the Era of Convergence

    Hitoshi Mitomo, Hidenori Fuke, Erik Bohlin

    Edward Elgar  2015

  • The Impact of ICT Revolution on Broadcasting

    The Japan Commercial, Broadcasters Association( Part: Contributor)

    Sanseido  2014.09

  • Telework and Telecommuting in Japan: Sustainability and Macroeconomic Perspectives

    K. Nakamura and K. Agata (eds), Convergence of Telecommunications and Broadcasting in Japan, Curzon  2001

  • Telework and Telecommuting in Japan : Sustainability and Macroeconomic Perspectives

    Convergence of Telecommunications and Broadcasting in Japan, United Kingdom and Germany, Curzon  2001

  • Urban Transportation Economics

    Bunshindo  1998

  • Multimedia Economics

    Bunshindo  1998

  • 都市交通の経済分析(翻訳)

    文眞堂  1998

  • マルチメディア経済

    文眞堂  1998

  • Social Consequences of Telework

    NTT Publishing Co.  1997

  • テレワーク社会

    NTT出版  1997

  • Economic Analysis of Telecommunications

    Nihon Hyoronsha  1995

  • 通話の経済分析ー外部性と料金の理論ー

    日本評論社  1995

  • The Theory of Public Utility Pricing

    1993

  • 公益企業の料金理論(翻訳)

    日本評論社  1993

  • Optimal Pricing of Telecommunications Service in an Advanced Information-Oriented Society

    Information Technology : Social and Spatial Perspectives  1988

▼display all

Works

  • Economic Efficiency of Expressway Network

    1986
    -
    1987

Awards

  • The 1st Promotion Award, Japan Section of Regional Science Association international

    1992  

Research Projects

  • Study of the determining factors in the performance of IT investment and its impact on the overall economy

    Project Year :

    2002
     
     
     

     View Summary

    This study statistically analyzes the IT investment in Japan based on the firm-level database that combines the questionnaire results with financial figures in order to derive theoretical implications in designing optimal governmental intervention for the IT-based society.Our focuses are a)finding out the determining factors of such investment, b)describing its impact on the current macro-economy, and c)estimating its effect on the economic activities in the future.In the course of our study, we conducted several questionnaire surveys and executed econometric analysis. Consistency with theoretical frameworks of previous empirical studies and macroeconomic analysis is also considered. The interim findings were presented before several academic meetings held in Japan as well as in foreign countries to receive comments and feedbacks form related researchers and policy makers.Major findings of this study include :1.IT investment of Japanese firms has failed to realize its full potential due to insufficient development of complementary management factors ;2.IT penetration reduces the perceived cost of information search and then motivates people to reduce the possibility of using the physical transportation mode over some telecommunication methods when involved in purchasing activities ; and3.IT investment in the broadcasting industry impairs the economies of scale of current business models and makes it efficient to divide it into the program production section and the program distribution section

  • The impact of ICT on the demand for and supply of transportation services

    Project Year :

    2002
     
     
     

  • Emergence and predictability of the impact of ICT investment

    Project Year :

    2002
     
     
     

  • The impact of ICT on the demand for and supply of transportation services

    Project Year :

    2002
    -
     
     

  • On the diffusion of a next-generation memory media

    Project Year :

    2002
    -
     
     

  • 情報化投資効果の発現メカニズムの理論的解明と予測可能性に関する研究

    Project Year :

    2002
     
     
     

  • Emergence and predictability of the impact of ICT investment

    Project Year :

    2002
     
     
     

  • The impact of ICT on the demand for and supply of transportation services

    Project Year :

    2001
    -
    2002
     

  • Emergence and predictability of the impact of ICT investment

    Project Year :

    2001
    -
    2002
     

  • Interaticnal Joint Study 0n Digital Convergence of Telecommunicaticns and Broadcasting

    Project Year :

    2001
    -
    2002
     

     View Summary

    Due to digital innovation, telecommunications and broadcasting is converging, which makes the market boundaries blur. The convergence is progressing in the three layers : networks, platforms and content. When new markets based on digital convergence are rapidly creating and firms are taking such strategic behaviors as vertical and horizontal integration and grand alliances, what sorts of policies are needed to achieve allocative and productive efficiency, to promote technological progress, and to enhance equity? Recent developments in technology and recent evolvements in regulatory policy have made economic analysis central to the study of convergence policy issues. To deepen our understanding of theoretical developments and policy trend, the international study group vas organized in 1998. Since then we have been collaborate to apply economic analysis to convergence problems. The first part of our academic achievement was published as a book titled Convergence of Telecommunications and Broadcasting is Japan, UK and Germany, Curzon Press, UK. In the second period of our cooperative research works, we had a seminar on convergence policy, focusing the efficient spectrum allocation in January 2002 at Waseda University and Osaka University. We also had an international seminar at Warwick University, UK from November 2-4, 2003, in which three major topics were extensively discussed : spectrum allocation and within a few years.

  • International Research on the Convergence of Telecommunications and Broadcasting

    Project Year :

    2001
     
     
     

  • International Research on the Convergence of Telecommunications and Broadcasting

    Project Year :

    2001
     
     
     

  • Joint Research on Policy in Converging Telecom and Broadcast

    Project Year :

    1999
    -
    2000
     

     View Summary

    Digital convergence poses a challenge to broadcasting and telecommunications policy on a global scale. Particularly digital innovation in the broadcasting sector enhances a rapid market convergence, which makes the boundary between the carriages of telecommunications and television signals blurry. Not only does digital convergence change the size and scope of telecommunications and broadcasting markets but it also has a great impact on our economic society. In order to enjoy the potential benefits of digital convergence, the public policy should be a pro-competitive one, since competitive pressures in the markets will bring opportunities for market players to provide new services and improve the quality of services, It is important to let competition work and let the players experiment with new ideas because it is competition that stimulates efficiency and ensures consumer sovereignty. We have organized an international research group to examine the current situation of digital convergence of telecommunications and broadcasting in Japan, United Kingdom and Germany, and to study the major policy issues, focusing on regulatory challenges those nations face from the international comparative point of view. The major implication that were distilled from our international comparative study is that a new regulatory paradigm is needed because competition can no longer be defined in terms of traditional markets alone. Competition policy must be analyzed across broadcasting and telecommunications industries. Since it is difficult to envisage the future deployment of digital convergence, reliance on competition policy would be the best solution. The immediate task of the government is to set the rules of the game as a way of enhancing fair competition and innovation. It is competition rather than regulation that simulates efficiency and diversification. Our study is published a book entitled Convergence of Telecommunications and Broadcasting in Japan, United Kingdom and Germany, Curzon Press, UK, 2001.

  • Convergence of Telecommunications and Broad Casting and Public Policy

    Project Year :

    1998
    -
    2000
     

  • Project on Information and Communication Technology for Japan

    Project Year :

    1999
     
     
     

  • Assessing the Impact of Information and Communications Technology on Consumers

     View Summary

    The purpose of this project is to theoretically and empirically study the impact of Information and Communication Tehchnology on consumers through market mechanisms.From FY2005 to FY2007, the current research movement associated with the domestic and international community were investigated, the experts of various field related to ICT were interviewed, theoretical and analytical models were constricted, empirical data were collected by conducting a questionnaire survey, the hypotheses were tested with the empirical data, and imprecations were extracted from researches.In the study, the following subtopics were dealt with:1. Concluding a research on the impact of ICT on productivity of firms2. Researching on the impact of ICT on consumer benefits3. Researching consumer protection in association with the Internet4. Researching a market uniting communications and broadcastFirst, with respect to subtopic 1, results of studies pertaining to ICT related investments in the production sector were summarized and the relationship between the production sector and consumer sector were shown.With respect to subtopic 2, the mechanisms by which the ICT provides consumer surplus was analyzed, especially using behavioral economics, and the characteristics of consumer behavior toward ICT services were explained.With respect to subtopic 3, damages caused by Individual information leakage were estimated, and security measures under the Act for Protection of Computer Processed Personal Data held by Administrative Organs were considered.Finally, with respect to subtopic 4, the changes that occur after termination of analog broadcasting and complete shift to digital broadcasting in 2011 were studied, and their impact on firms and consumers were forecasted

  • A Study of the Impact of Information and Communication Technology with Emphasis on the Contributions to Global Environmental Problems

     View Summary

    This study aims to provide a solution to global environmental problems by utilizing information and communication technology. In addition to direct controls and economic measures, a supplementary measure of providing appropriate information can make people aware of the crisis and motivate them to be more environmentally friendly. Effective provision of information can achieve breakthrough effects to solve the problems. At the same time, despite the awareness, it may result in no action toward the problems. The study has approached the problems through the following three steps :(1) pointing out problems related to public relations about environmental protections through ICT, and considering their solutions ;(2) researching technological and administrative hindrances against the diffusion of the information and communication networks, and investigating into their public interests ; and(3) considering the issues and challenges to construct global information and communication networks

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Presentations

  • Big data, IoT and AI for a Social Platform: Leapfrogging or Smooth Diffusion?

     [Invited]

    the 22nd ITS Biennial Conference  (Seoul) 

    Presentation date: 2018.06

  • The Economic Values of Personal Information --- Implications for Cyber Securities ---,

    Hitoshi Mitomo, Naoko Sakurai  [Invited]

    ITS-NBTC International Conference on Policy for Cyber Sustainability  (Bangkok) 

    Presentation date: 2017.12

  • Dominance in Data Platform Business: the Network Effect Theory Revisited

    Hitoshi Mitomo  [Invited]

    Thammasat Annual Academics and Postgraduate Conference on Asia-Pacific Studies  (Chiang rai) 

    Presentation date: 2017.12

  • Data Network Effects: Implications for Data Business

    the 28th European Regional Conference  (Passau)  International Telecommunications Society

    Presentation date: 2017.07

  • Data Network Effects and the Dominance over Artificial Intelligence Services: A Policy Perspective

     [Invited]

    ICPP3 Panel Session T08P11, International Public Policy Association  (Singapore)  International Public Policy Association

    Presentation date: 2017.07

  • Data Network Effects and the Diffusion of IoT

     [Invited]

    the 14th ITS Asia-Pacific Conference  (Kyoto) 

    Presentation date: 2017.06

  • Data Network Effects: A Preliminary Analysis of Externalities in Data Platform Services

    the 14th ITS Asia-Pacific Conference  (Kyoto)  International Telecommunications Society

    Presentation date: 2017.06

  • IoT Development and the Policy Implications in Japan

     [Invited]

    International Conference on New Media Competition and IoT Policy  (Taiwan)  National Chengchi University

    Presentation date: 2016.10

  • Internet-of-Things as an Accelerator of the Advancement of Mobile Networks: Implications for ASEAN

    Hitoshi Mitomo, Tatcha Sudtasan  [Invited]

    Joint QUALCOMM-LKY School Research Conference on: “Socio-Economic Impacts of Mobile Communications: Implications for ASEAN  Singapore

    Presentation date: 2016.04

  • Effects of new technologies on consumer’s choice of access to high-speed broadband internet

    Tatcha Sudtasan, Hitoshi Mitomo  [Invited]

    The Second Indian Regional Conference  (New Delhi)  International Telecommunications Society

    Presentation date: 2015.12

  • Broadcasting and Community TV in Japan

     [Invited]

    ITU/NBTC Conference on Community TV  (Bangkok)  ITU/NBTC

    Presentation date: 2015.11

  • Media’s Effects on People’s Perceptions and Intentions in Post-Disaster Recovery – a Case Study of the Great East Japan Earthquake

    Cheng, J. W, Mitomo, H, Otsuka, T, Jeon, S. Y

    26th European Regional ITS Conference  (San Lorenzo de El Escorial)  ITS

    Presentation date: 2015.06

  • Provision of Universal Broadband Service in Japan: A Policy Challenge toward a Sustainable ICT Infrastructure

    Hitoshi Mitomo

    20th Biennial Conference of the International Telecommunications Society  (Rio de Janeiro)  ITS

    Presentation date: 2014.11

  • The Effect of Simultaneous Multi-Screening on the Users’ Knowledge of Social Issues in a Highly Mediated Society

    Cheng, J. W, Otsuka, T, Hitoshi Mitomo

    25th ITS European Conference  (Belgium)  ITS

    Presentation date: 2014.06

  • Universal Service Obligation, Competition and Broadband in Japan

    Hitoshi Mitomo  [Invited]

    CEPS Digital Forum  (Brussels) 

    Presentation date: 2011.10

  • Cloud computing and prospective business and economic impacts in developing country: a case study of Thailand

    Chutipong Keesookpun, Hitoshi Mitomo

    International Telecommunications Society, 22nd European Regional ITS Conference  (Budapest)  ITS

    Presentation date: 2011.09

  • Optical Fiber and NGN Unbundling in Japan

    Hitoshi Mitomo  [Invited]

    Seminar on Japanese Broadband Development, organized by National Broadcasting and Telecommunications Committee (Thailand)  (Bangkok)  National Broadcasting and Telecommunications Committee (Thailand),

    Presentation date: 2011.02

  • Economic Effects of Digitizing Terrestrial Broadcasting: the Case of Japan

    Hitoshi Mitomo

    the 18th Biennial Conference of the International Telecommunications Society  (Tokyo) 

    Presentation date: 2010.07

  • Optical Fiber Unbundling in Japan

    Atushi Ozu, Hitoshi Mitomo

    the 18th Biennial Conference of the International Telecommunications Society 

    Presentation date: 2010.06

  • Deployment of High-Speed Mobile and the Renovation of the Japanese Mobile Business

    Hitoshi Mitomo  [Invited]

    Seminar on Policies Accelerating the Deployment of Broadband, Mobile and Digital Broadcasting, National Telecommunications Commission  (Bangkok)  National Telecommunications Commission

    Presentation date: 2009.12

  • A Behavioral Economic Approach to the Gap between People’s Awareness of Environmental Crisis and Their Behavioral Response: How Can Environmental Information Motivate People to Take Green Action?

    Hitoshi Mitomo, Tokio Otsuka  [Invited]

    Applied Econometrics Association, Conference on Internet Use and Impact, Marseille  (France) 

    Presentation date: 2009.11

  • Rich Information on Environmental Issues and the Poor Reflections on Consumers’ Green Actions: A Behavioral Economic Approach

    Hitoshi Mitomo, Tokio Otsuka

    the 4th AAA Conference of ITS  (Perth) 

    Presentation date: 2009.08

  • Demand-based Factors for Broadband Migration: The Cases of Japan and Thailand

    Manit Satitsamitpong, Tokio Otsuka, Toshiya Jitsuzumi, Hitoshi Mitomo

    the 1st Caribbean Regional ITS Conference  ITS

    Presentation date: 2009.08

  • Mobile Communications Demand and User Patterns

    Hitoshi Mitomo  [Invited]

    Workshop on Mobile Communications Demand and User Patterns  Chalmers University of Technology

    Presentation date: 2009.01

  • Quantifying the Value of Information Security Based on Internet Users' Stated preferences

    Naoko Sakurai, Tokio Otsuka, Hiroshi Nagano, Hitoshi Mitomo

    19th European Regional ITS Conference, International Telecommunications Society  (Rome) 

    Presentation date: 2008.09

  • Consumers’ Preference for Flat-Rate Media Access Fees

     [Invited]

    (Hong Kong)  Hitoshi Mitomo

    Presentation date: 2008.07

  • Empirical Analysis of Switching Behavior of Broadband Subscribers from Frat-Rate to Metered Rate Payment system

    Hussein Nassar, Hitoshi Mitomo

  • Understanding broadband under-utilization in Japan

    Bourna Maria, Hitoshi Mitomo

    20th Biennial Conference of the International Telecommunications Society  (Rio de Janeiro)  ITS

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Specific Research

  • 自動運転普及の法・経済学研究:選好とリスク

    2017  

     View Summary

    本研究の最終的な目的は、自動運転について、経済学の観点から分析し、法制度の検討と統合することにより、自動運転普及に資する政策を提言することにある。 研究全体では、1.自動運転の技術レベルと利用者選好の関係性、2.自動運転普及に資する法制度的対応、3.自動運転プラットフォームにおける競争と独占性の3テーマに分けて考究するが、本特定課題では、3番目のプラットフォーム競争と独占に焦点を当て、析を行った。 開発段階では競争状態にあるが、社会的には1つのプラットフォームの上にサービスが提供されることが最も効率的である。経済学的インセンティブの視点からプラットフォームにおける競争と独占の問題を解明した。

  • IoT利用の効果発現メカニズムの解明と普及促進政策策定に関する研究

    2016  

     View Summary

    IoT利用に資するネットワークインフラの整備を中心に研究を行った。IoTの普及はアジア経済においても社会変革のツールとして活用が期待されており、普及が期待されるIoTサービスの利用とネットワーク整備の必要性との関連を評価する必要がある。そこでIoTサービスへの利用意向が、無線および有線のブロードバンドの利用意向にどのように影響を与えるかを推計した。タイのバンコクのICTに親和度の高い人々を対象に、データを収集した。タイではモバイルブロードバンドが主で固定系の整備が遅れていたが、結果によれば、IoTサービスの利用によって、固定系のニーズも移動系と同様に高まることが示された。論文は国際論文誌に投稿中である。

  • デジタル・ファブリケーションの産業政策に関する研究:オープンデザインの経済学

    2014   実積寿也

     View Summary

    情報通信技術(ICT)が地域にいかなる変化をもたらすかを明らかにし、効果の発現に結びつくための政策的処方箋を導出する。デジタル・ファブリケーションのみによって地域活性化を目指すことは尚早であるが、他方、現状の利用方策では、地域の情報ネットワーク基盤が十分に利活用されていないという指摘もある。地域経済および社会の活性化を早急に達成するという喫緊の政策課題のために、ネットワーク活用型の新しい技術によりオープン・イノベーションを地域社会にもたらすことが求められている。基礎的な研究として、地域に導入が始まっている教育ICTを検証事例とし、また地域を支援するための補助スキームに関する制度的な検討を行った。

  • ICTライフライン構築のための政策研究―経済効率性と持続可能性―

    2013  

     View Summary

    本研究では、災害時に機能し、国民の安全・安心に貢献しうるライフラインとしてのICT(Information and Communications Technology)サービスについて、利用者便益と費用負担の視点から、その構築および継続的提供に資する政策的処方箋を導出し、新しいユニバーサルサービス実現に向けた提言を行うことを目的とした。ライフラインとして機能するICT サービスが、平時におけるサービスを前提としたユニバーサルサービスと比較し、どのように異なるかについて分析したところ、災害時に機能しうるICTライフラインの構成要件として以下の2 点が重要であった。① 頑健性 代替手段の確保可能性においてインフラに求められる水準② 有用性 災害時の救助及び支援、災害後の生活において求められるサービス内容そのため、本助成費による研究では、これらのうち、後者について重点的に研究を行った。より具体的には、2011年3月11日に起きた東日本大震災後の復旧・復興活動において、テレビを中心とするメディアと情報通信技術(ICT)とがどのような役割を果たしたかについて、民間放送連盟研究所との共同調査に基づきデータを収集し統計的な解析を行った結果、以下の2点が明らかとなった。1)オンラインによる市民参加が、メディアおよびICTと、ソーシャル・キャピタルと呼ばれる無形の人間関係資本との間の関係から惹起されていることが示される。すなわち、メディアによって人々の震災に対する関心が引き出されると同時に、ICTがその関心を表現するための有効な手段を提供し、オンラインによる市民参加の水準を上げ、結果的にオフラインのソーシャル・キャピタルの形成に正の効果をもたらす。統計的な分析を通じて、SNSのようなICTおよびテレビを代表とするメディアはオンラインによる市民参加を促進し、その結果、ボランティアなどのオフラインの市民参加に正の効果を与えることが示された。伝統的なメディアであるTVと、新しいコミュニケーション手段であるSNSなどの活用の重要性が示唆された。2)メディア情報が人々に如何に受容されて実際の行動に影響を与えたか、更に今後の行動意図に如何に影響を与えるかについて、特にこれらの相関関係を分析モデルに、メディア利用度やメディア信頼度、震災ダメージといった要因を加えて、メディア情報の培養効果に焦点を当てて検討する。分析の結果、メディア利用度、メディア信頼度、震災ダメージは、メディア情報に培養効果をもたらす要因であることがわかった。メディア利用度は主流効果で、震災ダメージは共鳴効果で、メディア情報が培養されて人々に影響を与えていると考えられる。なお、共分散構造分析の結果から、復興時に人々が認知したメディア情報は「絆」、「心配」、「不安」で構成されており、このメディア情報は実際行動と今後の行動意図に正の関係で影響を与えることがわかった。研究成果については、すでに国内外の学会で報告を行っており、関連学術誌に投稿している。今後は、先進的な自治体と共同で、災害時の安心・安全の確保に高い効果があるビッグデータを用いたICT サービスの活用を念頭に、個人情報保護などの法的側面についても問題点を検討し、合意形成に向けた政策提言を行いたい。

  • ポスト「ガラパゴス化論」の情報通信政策-技術革新とグローバル競争への対応-

    2012  

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    グローバルネットワーク時代におけるわが国の情報通信産業について、技術革新および市場構造変化が著しい産業の特質をあきらかにすることにより、公正競争のあり方、さらには産業発展を通じた国際競争力の強化を達成するための政策の方向性を提示することを目的とする。市場環境が急速に変化するなかで、当初の予定通り、以下の3点について研究を進めたが、特に、2.について重点的に研究を進めた。また、これと並行して、災害等において、情報通信の有効活用に向けた政策支援の枠組みについて検討を加え、新たな研究の方向性を見出した。1. 利用者の選好からみた携帯電話サービス市場の特質の解明 情報通信市場においては、スマートフォンをはじめとした新たなサービスが台頭しており、固定および移動といった従来の分類が急速に変化し、技術の融合が生じている。その変化は携帯電話サービス市場において顕著であるため、まずサービスの利用面における分析をおこない、利用者の選好からみた市場の特質をあきらかにした。2. 供給者のビジネスモデル等の分析を通じた市場構造の検討 供給者においては、技術の急速な変化に対応した新しいサービスの提供によって市場への影響力を維持するとともに、消費者の選好の変化にも対応しなければならない。端末、通信ネットワーク、プラットフォーム、コンテンツ等、携帯電話サービスに関するすべてのレイヤーにおける供給者のビジネスモデルを精査することによって、今後の企業戦略等を精査し、供給側からみた情報通信市場の構造変化をあきらかにした。3.携帯電話サービス市場における競争政策の妥当性の検証 把握された市場構造をもとに現在の競争政策の妥当性を検証し、ガラパゴスと揶揄された我が国携帯電話サービス市場を主たる対象に、国際競争力確保に向けた、技術融合時代における望ましい情報通信政策の在り方について提言を行う。 研究成果については、すでに国内外の学会で報告を行っており、関連学術誌に投稿している。

  • 情報通信サービス供給における定額料金制と従量料金制の経済効率性に関する研究

    2000  

     View Summary

     情報通信サービスの提供において、導入の要請が高まりつつある定額料金制を経済効率性の観点から評価した。定額料金制は、経済学的な観点からは必ずしも効率的とはいえないが、利用者から好まれていることは事実である。本論文ではまず、利用者が定額料金制を好む一般的な理由を、4つのバイアス(偏向)すなわち、(1)低廉化バイアス;(2)リスク回避バイアス;(3)料金徴収抵抗バイアス;(4)自由財バイアス、として考察した。これら以外に、より本源的に定額料金制が好まれる理由が潜んでいる。それは、余剰(便益)の分配的側面である。そこで、これらのバイアスを含まない情報通信市場モデルに基づき、定額料金制の導入が当該通信市場にどのような影響を与えるかを考察した。独占的供給者が提供する対話型の通信サービスにおいて、利潤最大化および総余剰最大化における最適二部料金をもとに、定額料金制を導入したときの料金水準、および総通信量、企業利潤、消費者余剰、総余剰への影響を数値例によって示した。得られた知見を要約すると以下の通りとなる。・ 定額制の導入は消費者の厚生を大幅に改善し、通信量も増加する。・ 反面、企業の収支は悪化するため、フィージビリティは低い。・ 総余剰には大きな変化はないが、その構成は大きく異なり、最適二部料金の場合に比べ、圧倒的に消費者余剰は増大する。・ 料金の最適性を維持して定額制を導入する場合には、加入者数の減少は免れえない。・ 可変費用と固定費用からなる費用構造のもとでは、利潤最大化を達成する安定な加入者集合が存在しない場合がある。すなわち企業が利潤最大化行動をとっている場合には、定額制導入の負の影響は企業にとって顕著である。・ 規制等によって総余剰最大化規準に従っている場合には、経済学的な効率性の低下はそれほど大きくない。すなわち総余剰最大化のもとでは、定額制を導入しても大きな影響はない。・ 定額料金制に対するバイアスがなくても、利用者の定額料金制志向は不変である。

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Overseas Activities

  • 実証応用に向けた通信経済の基礎的分析手法に関する研究

    2007.03
    -
    2007.09

    スウェーデン   ストックホルム商科大学

 

Syllabus

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