Papers

Published and forthcoming papers (refereed, international)

The bright side of the GDPR: Welfare-improving privacy management, ISER Osaka University Discussion Paper: No. 1246, 2024 (an old version: SSRN 4537982, 2023) (co-authored with Chongwoo Choe and Shiva Shekhar), accepted at Management Science.
The interaction between personalized pricing and multi-item purchases: A random utility model approach, 2024 (co-authored with Qiuyu Lu) Economics Letters, Vol. 247, Article 112113, 2025
Personalized pricing when consumers can purchase multiple items, (ISER DP No.1192R, 2023), (co-authored with Qiuyu Lu), Journal of Industrial Economics, Vol. 72, Iss. 4, pp. 1507-1524, 2024.
How does downstream firms' efficiency affect exclusive supply agreements?, (accepted version), (The technical appendix), (Old version, 2013)) (co-authored with Hiroshi Kitamura and Misato Sato), Review of Industrial Organization, Vol. 64, Iss. 2, pp. 219-242, 2024.
Personalized pricing with heterogeneous mismatch costs, ISER Osaka University Discussion Paper: No. 1184, 2022, (accepted version), (co-authored with Tomomichi Mizuno and Cong Pan), Southern Economic Journal, Vol. 70, Iss. 2, pp. 369-388, 2023.
A note on conglomerate mergers: The Google/Fitbit case, (Free access link before 17 August 2023) (accepted version), (co-authored with Akihiko Nakagawa), Japan and the World Economy, Vol. 67, Article 101203, 2023.
Defending home against giants: Exclusive dealing as a survival strategy for local firms, ISER DP 1122R, 2021 (co-authored with Hiroshi Kitamura and Misato Sato), Journal of Industrial Economics, Vol. 71, Iss. 2, pp. 441-463, 2023.
Which is better for durable goods producers, exclusive or open supply chain?, (accepted version), ISER DP 1115, 2021 (co-authored with Hiroshi Kitamura and Misato Sato), Journal of Economics & Management Strategy, Vol. 32, Iss. 1, pp. 158-176, 2023.

The impacts of suppliers and mutual outsourcing on organizational forms, (accepted version) ISER DP, 1155, 2021 (co-authored with Yasuhiro Arai), Canadian Journal of Economics, Vol. 56, Iss. 1, pp. 114-132, 2023.

Demand uncertainty, product differentiation, and entry timing under spatial competition, (ISER-DP 1007R, 2018), (co-authored with Takeshi Ebina and Katsumasa Nishide), European Journal of Operational Research, Vol. 303, Iss. 1, pp. 286-297, 2022.

Behavior-based personalized pricing: When firms can share customer information (accepted version), (the version (2022) referred in the accepted version) (co-authored with Chongwoo Choe and Mark J. Tremblay), International Journal of Industrial Organization, Vol. 82, Article 102846, 2022 (IJIO 2023 Winner).

Negative effect of price matching policy on traditional retailers in a dual-channel supply chain with different content formats (accepted version), (previous title: Competition between physical and electronic content retailers (ISER DP-1123, 2021)), (co-authored with Yuta Kittaka and Fuyuki Saruta), Transportation Research Part E: Logistics and Transportation Review, Vol. 161, Article 102682, 2022.

Data-driven mergers and personalization, ISER Discussion Paper: ISER DP 1108R, 2021 (co-authored with Zhijun Chen, Chongwoo Choe, and Jiajia Cong), RAND Journal of Economics, Vol. 53, Iss. 1, pp. 3-31, 2022.

Organizational structure and technological investment, ISER DP 1069RR, 2020, (ISER DP 1069, 2019, (co-authored with Inés Macho-Stadler and Ryusuke Shinohara) Journal of Industrial Economics, Vol. 69, Iss. 4, pp. 785-816, 2021.

Behavior-based price discrimination and product choice, ISER DP 1079, 2020 (which includes The technical appendix), 2020 (co-authored with Chongwoo Choe), Review of Industrial Organization, Vol. 58, Iss. 2, pp. 263-273, 2021.

Competition between offline and online retailers with heterogeneous customers, ISER DP 1056, 2019 (co-authored with Stefano Colombo), (previous title: Lowering customer costs in competition between physical and internet retailers: does it always pay?), Review of Industrial Organization, Vol. 57, Iss. 3, pp. 647-664, 2020.

Competitive personalized pricing (which was presented at several workshops under the title "Competitive personalized pricing with sophisticated consumers"), ISER-DP 1023, 2018 (co-authored with Zhijun Chen and Chongwoo Choe) Management Science, Vol. 66, No. 9, pp. 4003-4023, 2020 (cited in the background note (pdf) of Personalised Pricing in the Digital Era - OECD, the Finnish Competition and Consumer Authority)

Pre-negotiation commitment and internalization in public good provision through bilateral negotiations, (ISER DP 948R, 2017, SSRN Version, 2019), Journal of Public Economics, Vol. 175, pp. 84-93, 2019, (co-authored with Ryusuke Shinohara).

Pricing with cookies: Behavior-based price discrimination and spatial competition, (WP version, 2017-07), Management Science, Vol. 64, Iss. 12, pp. 5669-5687, 2018, (co-authored with Chongwoo Choe and Stephen P. King), (cited in the background note (pdf) of Personalised Pricing in the Digital Era - OECD, the Finnish Competition and Consumer Authority).

The countervailing power hypothesis when dominant retailers function as sales promoters, (ISER DP 0981R, 2017), Manchester School, Vol. 86, Iss. 5, pp. 665-680, 2018, (co-authored with Shohei Yoshida).

Strategic investment under competition for access provision (the former title "Competition for access provision: Infrastructure upgrades with spillovers," 2015), Telecommunications Policy, Vol. 42, Iss. 2, pp. 127-144, 2018, (co-authored with Keizo Mizuno).

Exclusive contracts with complementary inputs, (ISER DP 918R, 2015, Revised version (2017), International Journal of Industrial Organization, Vol. 56, pp. 145-167, 2018, (co-authored with Hiroshi Kitamura and Misato Sato).

Expanding distribution channels, (ISER DP 958, 2016), Asia-Pacific Journal of Accounting and Economics, Vol. 24, Iss. 3-4, pp. 464-484, 2017.

Exclusive contracts and bargaining power. (ISER DP 978, 2016), Economics Letters, Vol. 151, pp. 1-3, 2017, (co-authored with Hiroshi Kitamura and Misato Sato).

Should firms employ personalized pricing?, (ISER DP 869, 2013), the Appendix (not for publication), Journal of Economics & Management Strategy, Vol. 24, Iss. 4, pp. 887-903, 2015,(co-authored with Toshihiro Matsumura).

Product differentiation and entry timing in a continuous time spatial competition model, (ISER DP 915, 2014), European Journal of Operational Research, Vol. 247, Iss. 3, pp. 904-913, 2015, (co-authored with Takeshi Ebina and Daisuke Shimizu).

The effects of resale-below-cost laws in the presence of a strategic manufacturer, (ISER DP 875, 2013), Quantitative Marketing and Economics, Vol. 13, Iss. 1, pp. 59-91, 2015, (co-authored with Akira Miyaoka).

Multimarket linkages, Trade, and the productivity puzzle, (ISER DP 797, 2010), Review of International Economics, Vol. 23, Iss. 1, pp. 1-13, 2015, (co-authored with Laixun Zhao).

How does market size affect vertical structure when considering vertical coordination? Application to the railway industry, (ISER DP 820, 2011), Pacific Economic Review, Vol. 19, No. 5, pp. 657-676, 2014, (co-authored with Fumitoshi Mizutani).

What factors determine the number of trading partners?, (ISER DP 808, 2011; Discussion Paper at Shinshu U, 2008), (Web Appendix), Journal of Economic Behavior & Organization, Vol. 106, No. 1, pp. 428-441, 2014, (co-authored with Ryusuke Shinohara).

Port privatization in an international oligopoly, (ISER DP 864, 2013), Transportation Research Part B: Methodological, Vol. 67, No. 1, pp. 382-397, 2014, (co-authored with Kazuhiro Takauchi).

Environmental regulation and technology transfers, (ISER DP 862, 2012), Canadian Journal of Economics, Vol. 47, No. 3, pp. 889-904, 2014 (co-authored with Takao Asano).

The welfare effects of third-degree price discrimination in a differentiated oligopoly, (ISER DP 800, 2011), Economic Inquiry, Vol. 52, No. 3, pp. 1231-1244, 2014 (co-authored with Takanori Adachi).

Multi-market competition, R&D, and welfare in oligopoly, (A previous version, ISER DP-796, 2010), Southern Economic Journal, Vol. 80, No. 3, pp. 803-815, 2014 (co-authored with Akio Kawasaki and Ming Hsin Lin).

Horizontal mergers, firm heterogeneity, and R&D investments, (ISER DP 754, 2009), The B.E. Journal of Economic Analysis and Policy (Topics), Vol. 13, No. 2, pp. 959-990, 2013 (co-authored with Yasuhiro Sato and Kazuhiro Yamamoto).

Vertical separation as a defense against strong suppliers, (ISER DP 755, 2009), European Journal of Operational Research, Vol. 228, Iss. 1, pp. 208-216, 2013 (co-authored with Tomomichi Mizuno).

Competitiveness and R&D competition revisited, (ISER DP 752, 2009), Economic Modelling, Vol. 31, Iss. 1, pp. 541-547, 2013 (co-authored with Susumu Cato and Toshihiro Matsumura).

The arm's length principle and tacit collusion, Discussion Paper Version, International Journal of Industrial Organization, Vol. 31, Iss. 1, pp. 119-130, 2013, (co-authored with Chongwoo Choe).

Competitiveness and stability of collusive behavior, (Supplemental material), Bulletin of Economic Research, Vol. 64, Iss. Supplement s1, pp. s22-s31, 2012, (co-authored with Toshihiro Matsumura).

Why do large firms tend to integrate vertically? Bulletin of Economic Research, Vol. 64, Iss. Supplement s1, pp. s1-s21, 2012, (co-authored with Tomomichi Mizuno).

Airport privatization and international competition, (A previous version, ISER DP-792, 2010), Japanese Economic Review, Vol. 63, Iss. 4, pp. 431-450, 2012 (co-authored with Toshihiro Matsumura).

Should public sectors be complements of private sectors?, (A previous version, 2008), Journal of Institutional and Theoretical Economics, Vol. 168, No. 4, pp. 712-729, 2012, (co-authored with Ikuo Ishibashi).

Profit-enhancing know-how disclosure: A strategic view, (A previous version, 2008), supplementary material, Manchester School, Vol. 80, Iss. 5, pp. 560-579, 2012, (co-authored with Susumu Ogawa).

Locating outside a linear city can benefit consumers, (A previous version, ISER DP-761, 2009), Journal of Regional Science,, Vol. 52, Iss. 3, pp 420-432, 2012, (co-authored with Toshihiro Matsumura).

Equilibrium vertical integration with complementary input markets, (A previous version, ISER DP-770, 2010), The B.E. Journal of Economic Analysis & Policy, Vol. 12: Iss. 1 (Contributions), Article 26, 2012, (co-authored with Tomomichi Mizuno).

Profit enhancing competitive pressure in vertically related industries, (A previous version, 2009), Journal of the Japanese and International Economies, Vol. 26, no. 1, pp 142-152, 2012, (co-authored with Tomomichi Mizuno).

Welfare properties of strategic R&D investments in Hotelling models, Economics Letters, Vol. 115, no. 3, pp 465-468, 2012, (co-authored with Toshihiro Matsumura).

Spatial Cournot competition and transportation costs in a circular city, Annals of Regional Science, Vol. 48, no. 1, pp 33-44, 2012, (co-authored with Toshihiro Matsumura).

Market competition, R&D and firm profits in asymmetric oligopoly, (A previous version, 2008), Journal of Industrial Economics,, Vol. 59, no. 3, pp 484-505, 2011, (co-authored with Junichiro Ishida and Toshihiro Matsumura).

Collusion, agglomeration, and heterogeneity of firms, Games and Economic Behavior, Vol. 72, no. 1, pp 306-313, 2011, (co-authored with Toshihiro Matsumura).

When small firms fight back against large firms in R&D activities (A previous version, ISER DP-742, 2009), The B.E. Journal of Economic Analysis & Policy, Vol. 10, Iss. 1 (Topics), Article 81, 2010, (co-authored with Toshihiro Matsumura).

Profit enhancing parallel imports, Open Economies Review, Vol. 21, no. 3, pp 433-447, 2010, (co-authored with Toshihiro Matsumura)

Location equilibrium with asymmetric firms: the role of licensing, Journal of Economics, Vol. 99, no. 3, pp. 267-276, 2010, (co-authored with Toshihiro Matsumura and Giorgos Stamatopoulos).

Privatization and entries of foreign enterprises in a differentiated industry, Journal of Economics, Vol. 98, no. 3, pp. 203-219, 2009, (co-authored with Toshihiro Matsumura and Ikuo Ishibashi).

Does yardstick regulation really work? Empirical evidence from Japan's rail industry. Journal of Regulatory Economics, Vol. 36, no. 3, pp. 308-323, 2009, (co-authored with Fumitoshi Mizutani and Hideo Kozumi).

Vertical mergers and product differentiation, Journal of Industrial Economics, Vol. 57, no. 4, pp. 812-834, 2009.

Should civil servants be restricted in wage bargaining? A mixed-duopoly approach, the supplemental material. Journal of Public Economics, Vol. 93, nos. 3-4, pp. 634-646, 2009, (co-authored with Junichiro Ishida).

The existence of low-end firms may help high-end firms, Marketing Science, Vol. 28, no. 1, pp. 136-147, 2009, (co-authored with Ikuo Ishibashi).

Cost differentials and mixed strategy equilibria in a Hotelling model, supplementary figures, Annals of Regional Science, Vol. 43, no. 1, pp. 215-234, 2009, (co-authored with Toshihiro Matsumura).

Price ceilings, product location, and welfare, Journal of Economics, Vol. 95, no. 3, pp. 233-253, 2008.

Congestion-reducing investments and economic welfare in a Hotelling model, Economics Letters, Vol. 96, no. 2, pp. 161-167, 2007. (co-authored with Toshihiro Matsumura)

Uncertainty of voters' preferences and differentiation in a runoff system, the supplementary material, European Journal of Political Economy,Vol. 23, no. 4, pp. 1185-1189, 2007.

Industry profits and free entry in input markets, Economics Letters, vol. 93, no. 3, pp. 329-336, 2006.

Mixed Oligopoly, Foreign Firms, and Location Choice, Regional Science and Urban Economics, vol. 36, no. 6, pp. 753-772, 2006. (co-authored with Toshihiro Matsumura)

FDI may help rival firms, Economics Bulletin, Vol. 6 no. 22 pp. 1-8, 2005. (co-authored with Junichiro Ishida)

Cartel stability in a delivered pricing oligopoly", Journal of Economics (Zeitschrift für Nationalökonomie), vol. 86, No. 3, pp. 259-292, 2005. (co-authored with Toshihiro Matsumura)

Technology of upstream firms and equilibrium product differentiation, International Journal of Industrial Organization, vol. 22, Nos. 8-9, pp. 1091-1114, 2004.

Endogenous cost differentials between public and private enterprises: a mixed duopoly approach, Economica, vol. 71, No. 4, pp. 671-688, 2004. (co-authored with Toshihiro Matsumura)

A non-cooperative analysis of a circular city model, Regional Science and Urban Economics, vol. 34, No. 5, pp. 575-589, 2004. (co-authored with Junichiro Ishida)

Mixed oligopoly and spatial agglomeration, Canadian Journal of Economics, vol. 36, No. 1, pp. 62-87, 2003. (co-authored with Toshihiro Matsumura)

Mixed duopoly with product differentiation: sequential choice of location, Australian Economic Papers, vol. 42, No. 1, pp 18- 34, 2003. (co-authored with Toshihiro Matsumura)

Cournot competition and spatial agglomeration revisited, Economics Letters, vol. 73, No. 2, pp. 175-177, 2001.

Horizontal mergers and merger waves in a location model, Australian Economic Papers, vol. 40, No. 3, pp. 263-286, 2001.

Published papers in Japanese / non-journal articles

Heterogeneity and number of players in rent-seeking, innovation, and patent-race games (Older version: Working paper at Niigata U.), in Equilibrium Theory for Cournot Oligopolies and Related Games: Essays in Honour of Koji Okuguchi (Springer Series in Game Theory), 2016, (co-authored with Takeshi Yamazaki).
Koshoryoku wo naiseika shitamotodeno kumiaikatsudo no bunseki, Kokumin Keizai Zasshi, 200(2), 57-66, 2009. (In Japanese) (co-authored with Junichiro Ishida)
Hiyo no Fukakujitsusei to seihin tokusei no kankei, Kokumin Keizai Zasshi, 196(4), 19-31, 2007. (In Japanese) (co-authored with Toshihiro Matsumura)
Kakaku no jougen kisei to kigyou no seisan tokka, Shakai Kagaku Kenkyu, 56(3,4), 135-145, 2007. (In Japanese)
Endogenous timing of long-term and short-term contracts with technological compatibility, Shakai Kagaku Kenkyu, 55(3,4), 65-92, 2003.
Hampu-ken to chuko sofuto hambai mondai, Shakai Kagaku kenkyu, 51(3), 135-151, 2000. (In Japanese)
Sosho Kakuritu to Hanketu no Yoken Kanousei, Finacial Review 49 , 91-113, 1999. (In Japanese) (co-authored with Toshihiro Matsumura)

Unpublished papers

Infrastructure upgrades and foreclosure with coexistence of service-based and facility-based firms, ISER Osaka University Discussion Paper: No. 860, 2012, (co-authored with Keizo Mizuno).
Strategic dual sourcing as a driver for free revealing of innovation, ISER Osaka University Discussion Paper: No. 936, 2015 (co-authored with Laixun Zhao).
This Discussion Paper is divided into the following two papers:
1. Technology spillovers and outside options in a bilateral duopoly, ISER Osaka University Discussion Paper: No. 1039, 2018 (co-authored with Laixun Zhao).
2. Market expansion may harm the supplier in a bilateral monopoly, ISER Osaka University Discussion Paper: No. 1040, 2018 (co-authored with Laixun Zhao).
Outsourcing,input compatibility, and product positioning (former title Strategic perils of outsourcing: Sourcing strategy and product positioning (ISER-DP 983, 2016)), 2019 (co-authored with Cong Pan).
Naked exclusion under exclusive-offer competition, ISER Osaka University Discussion Paper: No. 1021, 2018 (co-authored with Hiroshi Kitamura and Misato Sato).
A manufacturer's incentive to open its direct channel and its impact on welfare, ISER Osaka University Discussion Paper: No. 1026, 2018 (co-authored with Tomomichi Mizuno and Cong Pan).
Supplier encroachment and retailer effort, ISER Osaka University Discussion Paper: No. 1027, 2018 (co-authored with Tomomichi Mizuno).
The effect of the dominant supplier's exclusive dealing on its investment and welfare, 2020 (co-authored with Arijit Mukherjee and Shohei Yoshida).
Lease or sale: When a durable goods monopolist can choose supply chain's openness, ISER Osaka University Discussion Paper: No. 1127, 2021 (co-authored with Hiroshi Kitamura and Misato Sato).
The countervailing power hypothesis and contingent contracts, ISER Osaka University Discussion Paper: No. 1191, 2022 (co-authored with Shohei Yoshida).
The effects of personal data management on competition and welfare, ISER Osaka University Discussion Paper: No. 1201, 2023 (co-authored with Jiajia Cong).
Strategic anonymity and behavior-based pricing, ISER Osaka University Discussion Paper: No. 1219, 2023 (co-authored with Stefano Colombo and Paolo G. Garella).
Welfare implications of personalized pricing in competitive platform markets: The role of network effects CESifo Working Paper No. 10994, 2024 (co-authored with Qiuyu Lu and Shiva Shekhar), resubmitted to a refereed journal.
Network compatibility and incumbent pricing regimes, ISER Osaka University Discussion Paper: No. 1265 2024 (co-authored with Mark J. Tremblay).