Research

Publication

• "Relevant markets and market power of mobile apps" (with Kohei Kawaguchi and Susumu Sato), Japan and the World Economy, Volume 67, September 2023.

• "Identifying the effect of mobile operating systems on the mobile services market" (with Takanori Ida, Teppei Koguchi), Information Economics and Policy, Volume 46, March 2019, Pages 86-95.

• "The effects of spectrum allocation mechanisms on market outcomes: Auctions vs beauty contests" (with Maria Baquero), Telecommunications Policy, Volume 41, Issues 5–6, June 2017, Pages 341-354.

• "Institutions and Cultural Heterogeneity as Determinants of National Income: A Random-coefficients Stochastic Frontier Model" (with Maria Baquero, Takanori Ida), Review of Development Economics, Vol 19, Issue 3, 710-724.

• "Optimum Pricing Strategy for Fixed-line Internet and Mobile Phone Services: A Twosided Market Approach," Empirical Economics Letters vol.10.8. (with Takanori Ida)

• "Discrete Choice Model Analysis of Demand for Mobile Telephone Service in Japan", Empirical Economics 2009, vol.36.1: 65-80. (with Takanori Ida)

• "Discrete Choice Analysis of Demand for Broadband in Japan", Journal of Regulatory Economics 2006, vol.29.1: 5-22. (with Takanori Ida)

Working Papers

• Empirical analysis on individual’s privacy-related consciousness and digital service adoption (with Hajime Ooiso and Takanori Ida)

• Merger Analysis in App Economy: An Empirical Model of Ad-Sponsored Media (with Kohei Kawaguchi and Susumu Sato)

• Public Media Do Serve the State: A Field Experiment , under revision(with Shuhei Kitamura)

• Does the usage of TV streaming on the Internet bring about new functions to the public service broadcaster? : Evidence from a randomized field experiment (with Daido Kido, Yoshiharu Ichikawa), under revision.

• The Impact of Asymmetric Regulation on Product Bundling: The Case of Fixed Broadband and Mobile Communications in Japan (with Teppei Koguchi, Takanori Ida).

• "Bundling Information Goods Under “Breakeven” Price." (Slide), under revision.

• "Consumer Heterogeneity on the Demand for Mobile Handsets in Japan: Feature Phone, Smartphone, and Tablet PC,” (with Takanori Ida), under revision.

• "Does net neutrality contribute to the migration to FTTH? A lesson from Japan’sexperience", under revision.

Work in Progress

• Effect of the product order and the product review on the product choice (with Hajime Oiso, Hirohide Sakaguchi, and Takanori Ida)

• Public's stated preference for science promotion policies in Japan (with Kenji Hirata and Takanori Ida)

• Oligopoly Non-linear Pricing and Bundling: A Structural Analysis (with Kohei Kawaguchi,  Susumu Sato, and Takanori Ida)

• Analysis of the role of international network effects on the diffusion of 3G mobile communication networks (with Maria Baquero)

• Online personal recommendation and media consolidation: empirical evidence from the online consumer behavior (with Kenichi Shinagawa)

• Syllabus review and its educational impact (with Hiroki Yasuda)