Research Papers

Working Papers

• Optimal Multiple Airport Charges under Airline Market Power considering the Marginal Cost of Public Funds (with Tatsuhito Kono and Izumo Suzaki)

  • Last Revised: June 2026.   Submitted

  • [Presentation slide]

  • Previous title: "Optimizing Multiple Airport Charges with Endogenous Airline Quality Considering the Marginal Cost of Public Funds"; "Optimizing Per-Passenger and Per-Flight Airport Charges and Fuel Tax Considering the Marginal Cost of Public Funds"

• Pass-Through, Quality Adjustment, and Imperfect Competition (with Takanori Adachi)

• Individual vs. Integrated Privatization of Complementary Airports under Air-Rail Competition (with Akio Kawasaki and Shingo Yamazaki)

  • R&R

• Cost and Demand Effects of Legal Adult Prostitution on Child Sex Trafficking (with Masahiro Shoji, Kenmei Tsubota, and Md. Sanaul Haque Mondal)

  • Submitted

• Pass-through with Endogenous Quality: The Role of Demand Functional Form (with Tetsuya Shinkai)

  • Last Revised: October 2025

• Price and Quality Decision of a Monopoly Platform for Transaction with Shipping  (with Tetsuya Shinkai)

Papers in Refereed Journals

1. Effects of International Airline Alliances on Domestic–International Connecting Passengers in Japan

   • Economics of Transportation, 2026, 46–47: 100460.

   • [SSRN working paper ver.]

2. Externality and Policy Intervention in Interregional Travel with Infectious Diseases (with Shingo Yamazaki)

   • Health Economics, 2025, 34(1): 68-84.

   • [SSRN working paper ver.]

3. Choice of Policy Instruments with Endogenous Quality: Per-passenger and Per-flight Airport Charges in Japan

   • Journal of Industrial Economics, 2022, 70(1): 44-88.

   • [SSRN working paper ver.]

   • Previous title: "Pass-through with Endogenous Quality: An Empirical Study of Per-Passenger and Per-Flight Airport Charges"

4. A Simple Method to Estimate Discrete-type Random Coefficients Logit Models

   • International Journal of Industrial Organization, 2022, 81: 102825.

   • [SSRN working paper ver.]   [MATLAB code]

   • Previous title: "Estimation of Discrete-type Random Coefficients Logit Models using Type-level Sales Data"

5. Electronic Word-of-Mouth: A Survey from an Economics Perspective (with Hitoshi Hayakawa)

   • International Journal of the Economics of Business, 2020, 27(2): 303-320.

   • [SSRN working paper ver.]

6. Market Structure and Product Quality: A Study of the 2002 Japanese Airline Merger (with Hiroshi Ohashi)

   • International Journal of Industrial Organization, 2019, 62: 158-193.

7. Empirical Analysis of the National Treatment Obligation Under the WTO: The Case of Japanese Shochu (with Hiroshi Ohashi)

   • Journal of the Japanese and International Economies, 2017, 46: 43-52.

8. Mutual influence across routes using a common airport: The case of the domestic market in Japan

• • Journal of Air Transport Management, 2014: 132-136.