e_work - Hamaoka@fbc.keio.ac.jp's home page

Publications

Papers

Hamaoka, Yutaka (2014)"What are the Determinants of　Inbound and Outbound Open Innovation Performance?" The first World Open Innovation Conference,Napa Valley: USA, Dec. 4-5, 2014, (abstract accepted for oral presentation)
Hamaoka, Yutaka (2012)"What are determinants of Open Innovation Performance?" 12th International Conference of ISPIM, Barcelona, Spain, 17-20 June.
Hamaoka, Yutaka(2008)"Antecedents and Consequences of Open Innovation", R&D Management International Conference, 19 June , Ottawa
Hamaoka, Yutaka and Hideki Tanaka(2006)"Are you ready to hear Voice of customers?" Marketing Journal(in Japanese)
Hamaoka, Yutaka(2005)"Coevolutionary Marketing" Mita-shogaku, Vol. 47, No. 3 [in Japanese]
Hamaoka, Yutaka(2002)"Understanding Active consumer(Active Consumer wo rikai suru)", Hitotsubashi Business Review, Vol. 50, No. 3, pp.40-55 [in Japanese]
Hamaoka, Yutaka (1998), "Consumer's Demographics, Buying Behavior and Adoption Timing of a New Brand: An Application of Split Hazard Model," Mita-Shogaku, Vol.41,No.1,pp.21-34 [in Japanese]
Katahira, Hotaka, Ichiro Furukawa and Yutaka Hamaoka (1998), "Non-compensatory Maximum-Likelihood Model" in Nakanisi, Masao ed.,New Directions for Consumer Choice Models," Kwansei-Gakuin University Press [in Japanese]
Hamaoka, Yutaka, Ichiro Furukawa, and Hotaka Katahira (1997), "Analysis of Attitude to Advertising: An Application of Maximum Likelihood Non-compensatory Model," Nikkei-Koukoku-Kenkyujyo-Ho, Aug.-Sep.,pp.18-23 [in Japanese]
Hamaoka, Yutaka and Hotaka Katahira (1997), "WOM Information Source as an Information System: An Experimental Economics Approach," Journal of Marketing Science (Japan Institute of Marketing Science), Vol.5,No.1-2, pp. 19-38[in Japanese]
Tominaga, Jyun-ich, Yutaka Hamaoka, Hotaka Katahira, and Chang Oh (1996), "What We Can Learn From Advertising Test Data: An Integrated Model of Communication Effect of Advertising,"Marketing Journal (Japan Marketing Association), Vol.15,No.4,pp.54-62 [in Japanese]
Hamaoka, Yutaka (1996), "How Communication between Actors affect Evolution of Social System?: A Simulation Study,"in Takeuchi (ed.), Analysis of Modern Society,?@To-kei Kenkyu-kai[in Japanese]
Hamaoka, Yutaka (1994), "Interaction and Independence between Consumers: A Review of Past Research,"Journal of Marketing Science (Japan Institute of Marketing Science), Vol.2,No.1-2,pp.60-85[in Japanese]
Hamaoka, Yutaka (1994), "Green Marketing Myopia,"Marketing Journal (Japan Marketing Association), Vol.13,No.4,pp.19-29 [in Japanese]
Hamaoka, Yutaka (1994), "How Word-of-Mouth Affects Individual Decision Making and Diffusion of Innovation?:Toward Integrated Approach,"Advances in Consumer Studies (Japan Association for Consumer Studies), Vol.2,No.1,pp.29-73 [in Japanese]
Takagi, Toshiyuki, Yutaka Hamaoka, Hidetoshi Hashizume, Kenzo Miya, and Jyunich Tani(1990)"Mechanical and Thermal Behavior of Multi Layer Plates Simulating Superconducting Laminated Structure," Proceedings of IUTAM Symposium on the mechanical modelings of New Electromafnetic Materials,(conference proceedings)

Book Chapter

Hamaoka, Yutaka (2006), "Interaction between Consumers" in Readings in Modern Marketing Vol. 4: Consumer behavior (Gendai no marketing senryaku), Yuhikaku: Tokyo[in Japanese]
Hamaoka, Yutaka (2005), "Brand Choice Model" in Introduction to Statistics (Keiei to keizai no tameno toukeigaku), Yuhikaku: Tokyo[in Japanese]
Hamaoka, Yutaka (1999), "Multi-level Marketing and Word-of-Mouth Communication: A Comparative Research" in Network Business Research Committee ed., Research in Multilevel Marketing, Nikkei BP: Tokyo[in Japanese]
Hamaoka, Yutaka (1999), "Adoption Timing of CATV sets and Length of Viewing CATV Programs" in Broadcast Industry Research Committee ed., Research in Digital Broadcasting industry, Toyo-Keizai: Tokyo[in Japanese]

Ph. D. Thesis

Hamaoka, Yutaka (1994), "Why Word-of-Mouth affect Consumer's Decision Making?" unpublished Ph.D Thesis, Univ. of Tokyo [in Japanese]

Working Papers

Hamaoka, Yutaka, et al.(2000) "New Concept of Marketing based on Active Consumers," Project Report of Marketing Academy,Japan Productivity Center[in Japanese]
Hamaoka and Yamanaka (1998), "Measuring Consumer's Preference: Comparison of Constant Sum, Pair-wise Comparison and Ranking Methods, under review[in Japanese]
Hamaoka, Yutaka et al.(1998) "Marketer's Ambition, Belief and Performance of New Products," Project Report of Marketing Academy,Japan Productivity Center[in Japanese]
Hamaoka and Yamanaka (under review), "Measuring Consumer's Preference: Comparison of Constant Sum, Pair-wise Comparison and Ranking Methods,"Journal of Marketing Science (Japan Institute of Marketing Science)[in Japanese]
Hamaoka, Yutaka (1999), "Do Consumers Compensate Affective Responses to Advertising?," Working Paper of ITME, University of Tokyo[in Japanese]
Tominaga, Jyun-ich, Yutaka Hamaoka, Hotaka Katahira, and Chang Oh (1996), "An Integrated Model of Communication Effect of Advertising,"Working Paper, University of Tokyo[in Japanese]
Hamaoka,Yutaka, Ichiro Furukawa, and Hotaka Katahira (1995), "A Maximum Likelihood Non-Compensatory Model: A Measurement Approach,"Working Paper, University of Tokyo

Research Grant

Hamaoka, Yutaka (2002)"Succsess and failure of Open Source Software Projects", Okawa zaidan Research Grant
Hamaoka, Yutaka (2000)"Evaluation of Impact of Knowledge Management Information System on Firm's Economic and Non-economic Performance: Lesson from Mitani Sangyo's Introduction of SELF System", Research Project Granted from Mitani-Sangyo
Hamaoka, Yutaka, Ikuo Takahashi, and Emmanuel Cheron (2000), "Relationship beteween Manufacturere and Supermarket, beteween Salesperson and Buyer, and between Buyer and Retailer: Comparison between Japan and North America," Report of Yoshida Hideo Zaidan Research Grant
Hamaoka, Yutaka (1998-1999), "Have Japanese Consumers Really Changed?: Analysis of Long term Opinion Research Data," Report of Monbu-Sho Scientific Research Grant
Takahashi, Ikuo and Yutaka Hamaoka (1999), "Advertising Effects on Distributors: Coordination Effect of Advertising," Report of Yoshida Hideo Zaidan Research Grant
Hamaoka, Yutaka, Ichiro Furukawa and Miyuri Shirai (1998), "Why Advertising Effect is Hard to Detect Using Panel Data?: Two Step Model of Consumer's Choice," Report of Yoshida Hideo Zaidan Research Grant
Hamaoka, Yutaka and Ichiro Furukawa (1997), "The Bottom Line Level of GRP, Price cut and In-store Promotion to Succeed New Products: Application of Maximum Likelihood Non-compensatory Model," Report of Yoshida Hideo Zaidan Research Grant
Hamaoka, Yutaka and Ichiro Furukawa (1996), "Change and Formation Process of Consumer's Preference: Bay Sian Model Analysis of Panel Data," Report of Japan Productivity Center Research Grant
Hamaoka, Yutaka (1995), "What is Known from Diffusion Pattern of Consumer Durable?," Report of Yoshida Hideo Zaidan Research Grant
Hamaoka, Yutaka (1995), Reconstructing Marketing : Market as a Co-evolving Complex System, Japan Marketing Association Research Grant
Hamaoka, Yutaka (1994), "Affective Responses to Advertising and Consumer's Brand Choice," Report of Yoshida Hideo Zaidan Research Grant
Hamaoka, Yutaka and Hotaka Katahira (1994), "WOM Information Source as an Information System: An Experimental Economics Approach," Report of Isetan Research Grant

Presentations (Selected)

Hamaoka, Yutaka (2017)"Thyroid Nodules in Fukushima," IAE 2017, Saitama, Aug. 19-22, 2017, (abstract accepted for poster)
Hamaoka, Yutaka (2017)"Thyroid Nodules in Fukushima," ISEE 2017, Sydney, Australia, Sep. 24-28, 2017, *Hamaoka, Yutaka (2017)"Marketing Science in Japan: Findings from 10 Years Longitude Survey" Informs Marketing Science Conference, Los Angels, USA, 8-11 June.
Hamaoka, Yutaka (2017)"How Open Innovation Evolved?" ISPIM Innovation Forum, Toront, Canada, 19-22 Mar.
Hamaoka, Yutaka (2016)"Thyroid Nodules in Fukushima," ISEE 2016, Rome, Italy, Sep. 1-4, 2016, (abstract accepted for oral presentation)
Hamaoka, Yutaka (2016)"Dose-Response Analysis of Radiation Exposure and Thyroid Nodules in Fukushima," ISEE-ISES AC2016, Sapporo, Japan, Jun. 27-29, 2016, (abstract accepted for poster)
Hamaoka, Yutaka (2016)"Re-Analysis of Nuclear Worker Data," ISEE-ISES AC2016, Sapporo, Japan, Jun. 27-29, 2016, (abstract accepted for oral presentation)
Go, Kanoko, Mai Kikumori, and Yutaka Hamaoka(2016) " The Application of Case-Based Decision Theory to the Adoption of a “Really” New Products: Extension to Consumers’ Learning." Marketing Science Conference, Shanghai, China, June 16-18
Ikeda, Yasunari, Kanoko Go, Feng Xin, Yingcong Zhuang, Xinyan Zhang, Shumin Liu, and Yutaka Hamaoka (2016) "Rise and Fall of On-line Opinion Leaders" Marketing Science Conference, Shanghai, China, June 16-18
Hamaoka, Yutaka (2015)"A Possible Warning from Fukushima: An Update," MELODI 2015 Workshop: Munich, Germany, Nov. 9-11, 2015, (abstract accepted for poster)
Hamaoka, Yutaka (2015)"Individual Level Data Model is More Effective to Detect Radiation Effect: Re-Analysis of A-bomb Survivor and US Nuclear Worker Data," MELODI 2015 Workshop: Munich, Germany, Nov. 9-11, 2015, (abstract accepted for poster)
Go, Kanoko, Mai Kikumori, and Yutaka Hamaoka (2015)"Empirical Research on Case-Based Decision Theory: An Application to Adoption of a Rally New Product,” Marketing Science Conference, Baltimore, USA, June 19, 2015
Hamaoka, Yutaka (2015)"A Possible Warning from Fukushima III:An Analysis of Radiation Dose and Prevalence of Thyroid Nodules Using Municipality-level Data," 2015 International Conference on Radiation Research, Kyoto: Japan, May 19-22, 2015, (abstract accepted for poster)
Hamaoka, Yutaka (2015)"It is time to say goodbye to Poisson Regression II:　Application of Individual Level Model to Nuclear Worker Data," 2015 International Conference on Radiation Research, Kyoto: Japan, May 19-22, 2015, (abstract accepted for poster)
Hamaoka, Yutaka (2015)"Re-Analysis of Radiation Biological Data: Are There Threshold and/or Hormesis Effect?," 2015 International Conference on Radiation Research, Kyoto: Japan, May 19-22, 2015, (abstract accepted for poster)
Hamaoka, Yutaka (2015)"Re-Analysis of A-bomb Survivor Data Supports LNT Model: How to Select Best Model," 2015 International Conference on Radiation Research, Kyoto: Japan, May 19-22, 2015, (abstract accepted for oral presentation)
Chiu, Tengchen, Zhenlie Han, Akamatsu Naoki, Ying Pu, Masanori Sueno, Ryosuke Takeuchi, Shumin Liu, and Yutaka Hamaoka (2015) "Detecting Anomalies and Supporting Community to Ensure Healthy Society," Report submitted to Data for Development Challenge Senegal
Hamaoka, Yutaka (2014)"A Possible Warning from Fukushima:An Update," 2014 World Congress on Epidemiology, Anchorage: USA, Aug. 19, 2014, (abstract accepted for poster)
Hamaoka, Yutaka (2014)"It is time to say goodbye to Poisson Regression: Application of Individual Level Model to Nuclear Worker Data ," 2014 World Congress on Epidemiology,Anchorage: USA, Aug. 19, 2014, (abstract accepted for Oral Presentation)
Go, Kanoko, Mai Kikumori, and Yutaka Hamaoka (2014)"Empirical Research on Case-Based Decision Theory: An Application to Adoption of a New Product,” Marketing Science Conference, Atlanta, USA, June 14, 2014
Kikumori, Mai, Kanoko Go, and Yutaka Hamaoka (2014)"Do Consumers Evaluate Movies in Detail?: Comparison between Case-Based Decision Theory and Multi-Attribute Attitude Theory,” Marketing Science Conference, Atlanta, USA, June 12, 2014
Hamaoka, Yutaka and Kanoko Go (2013)"Determiners of User-firm Collaboration Network Performance in CT Scanner," Informs Annual Meeting, Minneapolis, Minnesota: USA, Oct 8, 2013
Hamaoka, Yutaka (2013)"A Possible Warning from Fukushima: A Preliminary Analysis of Radiation Dose and Occurrence of Thyroid Nodules Using City- and Village-level Data," MELODI 2013 Workshop , Brussels,Belgium, Oct. 8, 2013, (abstract accepted for Oral Presentation)
Hamaoka, Yutaka (2013)"It is time to say goodbye to Poisson Regression," MELODI 2013Workshop , Brussels,Belgium, Oct. 7-10, 2013, (abstract accepted for poster)
Hamaoka, Yutaka (2013)"Birth and Death of eRumors," Marketing Science Conference, Istanbul,Turkey, July 11-16, 2013
Hamaoka, Yutaka (2013)"Creation and Diffusion of Innovation: A Patent Analysis of a CT Scanner and MRI," INSNA, Hamburg,Germany, May 22-26, 2013
Hamaoka, Yutaka (2012)"Creation and Diffusion of Innovation by User-Firm-University　Collaborative Networks: Patent Analysis of a CT Scanner and MRI," 10 th User and Open Innovation Workshop, Harvard Business School, Boston, MA, USA, July 30-Aug 1, 2012
Hamaoka, Yutaka (2012)"What are determinants of Open Innovation Performance?" 12th International Conference of ISPIM, Barcelona, Spain, 17-20 June.
Tsuchiya, Fuminori and Yutaka Hamaoka, (2011) "EV or HEV? That is the Question" Informs Annual Meeting, 14, November, Charlotte: NC.
Kei, Masae and Yutaka Hamaoka, (2011) "How to Interact with Bloggers?" Informs Annual Meeting, 15, November, Charlotte: NC.
Hamaoka, Yutaka (2011)"A Search for Better Dose-Response Function," 14th International Congress of Radiation Research, Warsaw, Poland, 27 Aug -1 Sep.

Hamaoka, Yutaka (2010)"Spatial Diffusion of Innovation*A Spatial Panel Analysis of Electronic Toll Collecting Transponders in Japan",The International Symposium on Statistical Analysis of Spatio-Temporal Data, Kamakura, Japan, 4 Nov.
Kei, Masae and Yutaka Hamaoka, (2010) "Why Do People Post On Business Blogs?" Global Marketing Conference at Tokyo, 11, September, Hotel Okura: Tokyo.
Ishizuka,Kei ,Yen-ju Chen, and Yutaka Hamaoka(2010) "Consumer Creativity: Does The Network Position Matter?" Global Marketing Conference at Tokyo, 11, September, Hotel Okura: Tokyo.
Yu, Jo-An and Yutaka Hamaoka, (2010) "How Does Customer Participation Affect Product Development and Product Performance?" Global Marketing Conference at Tokyo, 11, September, Hotel Okura: Tokyo.
Hamaoka, Yutaka(2010)"Antecedents and Consequences of User Innovation", User and Open Innovation Workshop, 2-4 August, Sloan Management School, Massachusetts Institutes of Technology, Cambridge, USA.
Hamaoka, Yutaka(2010)"Spatial Diffusion of Innovation", Marketing Science Conference, 17 June, Koeln, Germany.
Hamaoka, Yutaka(2010)"Asymmetry of In-bound and Out-bound Open Innovation", The 19th International Conference for Management of Technology, 9-11 March, Cairo, Egypt.
Hamaoka, Yutaka(2009)"Asymmetry of In-bound and Out-bound Open Innovation -What are the Determinants of the Effectiveness of Open Innovation?", International Conference Beyond Dawn of Innovation, 16 June., Hotel Rantasipi Sveitsi in Hyvinkaa, Finland.
Hamaoka, Yutaka(2009)"What are the Differences between Opinion Leaders and eOipnion Leaders? A Comparison among Japan, the US, and China", INSNA, 9 March., San Diego.
Hamaoka, Yutaka(2008)"How Do Technology Intermediaries Work?", Informs Annual Meeting, 15 Oct., Washington DC.
Fujita, Yuji and Yutaka Hamaoka(2008)"Individual's Performance in Huge Scale Collaborative NEtwork", Informs Annual Meeting, 13 Oct., Washington DC.
Hamaoka, Yutaka(2008)"Antecedents and Consequences of Open Innovation", R&D Management International Conference, 19 June , Ottawa
Hamaoka, Yutaka(2008)"Users as Co-Creators", Informs Marketing Science Conference, 12, June, Vancouver, Canada
Hamaoka, Yutaka(2008)"Diffusion on the Internet," Sunbelt International Social Network Conference (January, St. Petersberg, Florida)
Hamaoka, Yutaka(2007)"Antecedents and Consequences of Open Innovation", Informs Annual Meeting, November, Seattle
Hamaoka, Yutaka(2006)"Active Consumer and Coevolutionary Marketing: New Paradigm of Marketing," INTERNATIONAL UNIVERSITY OF JAPAN SYMPOSIUM ON VALUE CO-CREATION (May, Tokyo)
Hamaoka, Yutaka(2006)"Communication Process and Perfomance of Open Source Projects," XXVI Sunbelt International Social Network Conference (April, Vancouver)(pdf)
Hamaoka, Yutaka(2004)"By the Community, For the Community: An Analysis of Open Source Software Projects," XXIV International Sunbelt Social Network Conference (May, Slovenia)(pdf)
Hamaoka, Yutaka(2004)"Why of R Project Succeeded?," useR! 2004 - The 1st R User Conference (May, Wien)
Takagi, Toshiyuki, Yutaka Hamaoka, Hidetoshi Hashizume, Kenzo Miya, and Jyunich Tani(1990)"Mechanical and Thermal Behavior of Multi Layer Plates Simulating Superconducting Laminated Structure," IUTAM Symposium on the mechanical modelings of New Electromafnetic Materials,(Aug., at Stockholm Univ.)
Miya, Kenzo, Eich Yanagi, Hidetoshi Hashizume and Yutaka Hamaoka,(1987)"Study on Prediction of Quench Occurrence in Superconducting Coils," IUTAM Workshop on Fusion Reactor Technology, (Sept. Univ. of Tokyo)
Hamaoka, Yutaka(2001)"Performance of Open Source Software Projects," Meeting on Opensource Software Research (October, MIT)
Hamaoka, Yutaka(2000)"Development by Consumer: Case of DOS-nization of Mobile Gear," User Innovation Workshop (June, MIT)