■ Business career
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1. |
1992/04～1995/03 |
Dentsu Inc. |
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2. |
1997/03～1999/03 |
Arthur D. Little (Japan) Inc. |
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3. |
1999/04～2007/03 |
NTT Data Institute of Management Consulting |
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4. |
2011/04～2013/03 |
University of California, San Diego Visiting Scholar |
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5. |
2017/04～ |
Tokyo Keizai University Communication Studies Professor |
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6. |
2010/04～2017/03 |
Tokyo Keizai University Communication Studies Associate Professor |
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7. |
2007/04～2010/03 |
Tokyo Keizai University Communication Studies Full-Time Lecturer |
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Display 5 items
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■ Degree/Academic background
| 1. |
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Faculty of Sociology, Hitotsubashi University, Graduated, |
| 2. |
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〔Master Course〕, Graduate School of Media and Governance, Keio University, Completed, |
| 3. |
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〔Doctorial Course〕, Graduate School of Media and Governance, Keio University, Completed, |
| 4. |
2009/12/24
Degree Acquisition |
Keio University, Ph. D. in Media and Governance |
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■ User Research Outline
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■ Reseach Areas
| Internet Communication, Information and Organization, Socio-Informatics (Key Word：Information Overload, Algorithm and User Behavior, Governance of Information Commons)
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■ Book and thesis
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1. |
2023/03/15 |
Book |
Why we’re so hooked on YouTube app (Collaboration) |
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2. |
2018/06/18 |
Book |
A Quarter of Century of Social Media in Japan: Time and Contents Swallowed by Information Capitalism (in Japanese) (Single) |
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3. |
2016/07/10 |
Book |
The Psychology of Twitter: Information Architecture and User Behavior (in Japanese) (Collaboration) |
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4. |
2000/09 |
Book |
Expanding Linux's Value through Community Alliance Strategy (in Japanese) pp.19-25, 103-216 (Collaboration) |
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5. |
1998/09 |
Book |
Shareware (Shared Online Software): An Alternative Economic System (in Japanese) pp.全て (Collaboration) |
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6. |
2014/12/25 |
Book |
The “Edge” of Digital (in Japanese) pp.33-74 (Collaboration) |
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7. |
2014/02/18 |
Book |
A Guidebook for Understanding Communication Studies (in Japanese) pp.60-61, 70-71, 78-79, 88-93, 195, 213, 216 (Collaboration) |
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8. |
2005/03/31 |
Book |
Management Strategy in The Ara of Digital (in Japanese) pp.172−177 (Collaboration) |
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9. |
2001/08 |
Book |
How to Assure the Originality of Electronic Documents (in Japanese) pp.第4章 (Collaboration) |
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10. |
2023/02/15 |
Article |
An Attempt to Develop an Impression of YouTube Scale, An Information Contact Propensity Scale, and an Information Overload Scale pp.63-87 (Collaboration) |
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11. |
2022/11/02 |
Article |
An Exploratory Study of the Relationship Between Smartphone Usage Situations and Categories of Apps pp.95-117 (Collaboration) |
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12. |
2021/11/04 |
Article |
Characteristics of Video Viewing Behavior from the Viewpoint of Mobile Video Viewing Genres and Usage Motives: Focusing on the Relationship with TV Viewing and Time Use The Journal of Communication Studies pp.61-86 (Collaboration) |
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13. |
2021/10/02 |
Article |
The Relationship between Architecture Usage Patterns and Viewing Video Genres in YouTube App Socio-Informatics pp.17-33 (Collaboration) |
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14. |
2021/07 |
Article |
The use and motive of mobile video viewing: An analysis from the viewpoint of social space Yoshida Hideo Memorial Foundation, 54th Research Paper (Collaboration) |
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15. |
2021/02/17 |
Article |
The Relationship between Sense of Public Space and Video Viewing Time on Mobile Devices The Journal of Communication Studies pp.119-134 (Single) |
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16. |
2020/11/04 |
Article |
Development of Impression Scale for YouTube The Journal of Communication Studies pp.3-16 (Single) |
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17. |
2020/02/19 |
Article |
Theory and Practice of Platform Cooperatives Dealing with Digital Information Goods: Through Case Studies of Stocksy and Resonate The Journal of Communication Studies pp.45-72 (Single) |
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18. |
2019/11/06 |
Article |
Watching & Listening YouTube with Smartphone : Basic Analysis from The Viewpoint of Information Architecture The Journal of Communication Studies pp.87-111 (Single) |
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19. |
2018/05/16 |
Article |
How social network site users’ motives predict their online network sizes: A quantile regression approach to Japanese Twitter usage International Journal of Human-Computer Interaction 35(7),pp.548-558 (Collaboration) |
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20. |
2017/09 |
Article |
Relationships between the Use of Emotional Terms on Social Media, Posting Motives, and Network Structure : Focusing on Positive and Negative Emotional Terms in Twitter The Japanese journal of language in society pp.16-28 (Collaboration) |
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21. |
2016/11 |
Article |
Unfriend or ignore tweets?: A time series analysis on Japanese Twitter users suffering from information overload Computers in Human Behavior 64(November),pp.914-922 (Collaboration) |
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22. |
2016/02/24 |
Article |
Motivations for Posting Product Review and Determinants of the Number of Review Posted : Comparison analysis of 2006 and 2014 The Journal of Communication Studies pp.23-49 (Single) |
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23. |
2015/12/04 |
Article |
Exploratory research on posting motivation in social media The Research Report, The Telecommunications Advancement Foundation (Collaboration) |
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24. |
2015/11/11 |
Article |
The anatomy of tweet overload: How number of tweets received, number of friends, and egocentric network density affect perceived information overload Telematics and Informatics 32(4),pp.853-861 (Collaboration) |
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25. |
2012/12/05 |
Article |
How do they use Tag in the group of enterprises ? : A case analysis of Social Bookmark Service“ 4dk” The Journal of Communication Studies pp.31-58 (Single) |
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26. |
2010/10/13 |
Article |
Permalink : The Technology that Determined the Access Structure and the Earning Model of the 00s' Web The Journal of Communication Studies pp.67-100 (Single) |
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27. |
2009/12/24 |
Article |
A Research on Economic Value of "Relationships of Inter-Information" on the Web -The Relation between Web Page Transition Pattern and Content-Match Ad' Click- The Ph.D. Dissertation, Graduate School of Media and Governance, Keio University (Single) |
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28. |
2009/03/04 |
Article |
A Dynamic Analysis of the Long Tail : Does “Filter” Bring “Expansion of the Tail” and “Decentralization of Product Sales”? The Journal of Communication Studies pp.17-45 (Single) |
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29. |
2007/09/20 |
Article |
Two Two-Layer Structures on Online Community: Poster and Lurker, Value and Architecture Organizational Science pp.26-37 (Single) |
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30. |
2005/06 |
Article |
Effectiveness of Information Sources and Purchasing Behavior on Evaluation Site Users : A Correlation Analysis using Length of Subscription Period and Number of Purchase Times based on Evaluative Information on the Site Journal of the Japan Society forManagement lnformation pp.19-43 (Collaboration) |
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31. |
2005/03 |
Article |
Driving Forces in Product Selection: Evaluation Sites, Magazines, and Word of Mouth Information, A Research on Users of a Cosmetics Product Evaluation Site Journal of Information and Media Studies pp.29-42 (Single) |
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32. |
2003/03 |
Article |
Information dissemination behavior of lurkers and its influence on purchasing Marketing Journal pp.39-51 (Collaboration) |
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■ Research Field
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■ Main Courses Taught
| 1.
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Introduction to Social Media
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| 2.
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Network and Society
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| 3.
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Social perspectives in human-computer interaction
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| 4.
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Digital Marketing
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| 5.
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Information and Communication Industry
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| 6.
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Workshop on Social Research
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■ Belonging society
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1. |
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The Society of Socio-Informatics |
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2. |
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The Japanese Society of Social Psychology |
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3. |
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The Japanese Society for Artificial Intelligence |
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4. |
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Japanese Cognitive Science Society |
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