Koki Arai

Current Position:

Professor of Economics

Faculty of Business Studies

Kyoritsu Women's University

Research Ares:

Industrial Organization, Competition Policy

Applied Microeconomics, Empirical Microeconomics

Teaching Areas:

Industrial Organization, Japanese Economy, Microeconomics

Education:

Ph. D. (Economics) Osaka University, March 2005.

    Thesis: “Five Essays on Antitrust Economics”

    Committee: Atsushi Tsuneki (Chair), Masaki Aoyagi, and Kuninobu Takeda

B.A. (Economics), School of Political Science and Economics, Waseda University, 1990.

Selected Articles in Refereed Journals:

Arai, Koki "From Silence to Vigilance: Overcoming Barriers in Public Reporting of Bid-Rigging and Cartel Violations." Journal of Antitrust Enforcement, forthcoming. doi.org/10.1093/jaenfo/jnae027.

Arai, Koki "Cartel Agreement Reached, But Price Not Raised." International Journal of Economic Policy Studies, forthcoming. doi.org/10.1007/s42495-023-00127-7. 

Arai, Koki "Law and Economics of Language Model Development: Empirical Examination of Corporate Strategies and Vaporware Claims." Asian Journal of Law and Economics, forthcoming. doi.org/10.1515/ajle-2023-0118.

Arai, Koki and Emi Morimoto "Public Procurement and Business Performance in COVID-19 Situation: Decline in Firms’ Entry." International Journal of Construction Management, forthcoming. doi.org/10.1080/15623599.2023.2271215. 

Arai, Koki, and Masakazu Matsumoto "Public Perceptions of Autonomous Lethal Weapons Systems." AI & Ethics, forthcoming. doi.org/10.1007/s43681-023-00282-9 

Arai, Koki "Comparative Law and Economics in the Field of Modern Competition Law." Comparative Law Review, 13(1) 141-155. 2023 (ISSN 0866-9449, e-ISSN 2391-7644)  

Hayakawa Yuichiro, and Koki Arai "Three E-commerce Case Studies in the Context of Japanese Competition Enforcement: Comparative Considerations With the US Experience." World Competition (2023) 46(1) 99-120. 

Kitamura, Miguel (Masaru) and Koki Arai "Impact of Shorter Trial Periods in Medical Litigation." Asian Journal of Law and Economics, 13(3), 301-322. doi: 10.1515/ajle-2022-0056.

Mori, Riuko, Natsu Iwaki, and Koki Arai “Attitudinal and behavioral changes in women’s college students during an online leadership development program during COVID-19.” International Journal of Leadership in Education, https://doi.org/10.1080/13603124.2021.2013544,  2022. 

Arai, Koki “Digital Goods and Digital Platforms.” Asian Journal of Law & Economics, 21(4) 593-608. 2021 doi.org/10.1515/ajle-2021-0057.

Arai, Koki "The Characteristics of Low Bid Price Survey Standards and their Impact." Journal of Industry, Competition and Trade, 21(4) 593-608. 2021. doi.org/10.1007/s10842-021-00372-6.

Arai, Koki and Shuya Hayashi "Business Diversification and Multifaceted Markets." International Journal of Economic Policy Studies, 15(2) 235-255, 2021. https://doi.org/10.1007/s42495-021-00058-1. 

Arai, Koki and Shuya Hayashi "A Methodology for Assessing High-Tech Regulation: A Legitimacy Perspective." International Review of Law, Computers & Technology, 35(3), 288-300. 2021. doi.org/10.1080/13600869.2021.1898919.

Arai, Koki and Kentaro Hirayama "Interaction between Information Law and Competition Law: Organizing Regulatory Perspectives on Platform Businesses." Asian Journal of Law and Economics, 12(2) 171-188. 2021. doi.org/10.1515/ajle-2020-0074.

Iwaki, Natsu, Riuko Mori, and Koki Arai "Optimizing Leadership Education: The Practice of Leadership Education In Women's Colleges" Academy of Educational Leadership Journal (Online ISSN: 1528-2643) 25(1) 1-17. 2021.

Arai, Koki and Emi Morimoto "Productivity and innovation in the Japanese construction industry." Construction Innovation, 21(4) 917-933. 2021.  doi.org/10.1108/CI-09-2020-0146.

Arai, Koki  "Price and Quality: Relationship between Bid Rate and Construction Performance Rating Ranking." International Journal of Quality & Reliability Management, 38(10) 2034-2047. 2021. doi.org/10.1108/IJQRM-08-2020-0255.

Arai, Koki "Geographic Market Size and Low Bid Competitiveness in Construction Companies." Competitiveness Review, 32(1) 85-102, 2021 https://doi.org/10.1108/CR-10-2020-0124. 

Arai, Koki and Emi Morimoto  "Case Study in Shikoku: Changes in the Bidding Behaviour of Businesses." International Journal of Construction Management, doi:10.1080/15623599.2020.1857004, 2020.

Arai, Koki "Perspectives on the Evaluation of Rules for the Social Implementation of Autonomous Robots (On viewpoints for evaluating various rules)." Advanced Robotics, 35(9) 532-536. doi.org/10.1080/01691864.2020.1865197, 2020.

Megumi Tahira and Koki Arai "International Cooperation in Merger Control in Japan." Journal of Antitrust Enforcement 2019. doi: 10.1093/jaenfo/jnz027.

Shuya Hayashi and Koki Arai “How Competition Law Should React in the Age of Big Data and Artificial Intelligence.”  The Antitrust Bulletin 64(3) 447-456 2019.

Arai, Koki and Emi Morimoto "The Construction Industry and (Dis)Economies of Scope: Empirical Research in the Hokkaido Procurement Auction."  Journal of Industry, Competition and Trade, 19(2) 281-292, 2019.

Devi Lucy Y Siadari and Koki Arai.  "International Enforcement of ASEAN Competition Law." Journal of European Competition Law & Practice, 9(5), 328-335, 2018.

Arai, Koki, and Emi Morimoto. "Construction Industry and Competition Policy in Japan." International Journal of the Economics of Business 24(3): 345-363. 2017.

Arai, Koki. “Ex-post Examination of Mergers: Effects on Retail Prices.” Asia-Pacific Journal of Accounting & Economics 24(1-2): 145-162. 2017.

Akematsu, Yuji and Koki Arai. "Estimating the Value of Generic Entry and Intellectual Property Litigation in the Pharmaceutical Market." Japan and the World Economy 40: 16-20. 2016.

Arai, Koki. “Merger Assessment in Japan: the Declining Importance of Market Shares.” Journal of European Competition Law & Practice 6(5) 337-345.  2015.

Arai, Koki. “Indirect Evidence in Japanese Cartel Control,” IIC - International Review of Intellectual Property and Competition Law, 46(3): 340-357. 2015.

Kitamura, Hiroshi, Misato Sato, and Koki Arai. “Exclusive Contracts when the Incumbent can Establish a Direct Retailer.” Journal of Economics. 112 (1): 47-60. 2014.

Arai, Koki. “Damage Calculation in Private Monopolization: A Case Study in Japan.” Journal of Competition Law and Economics. 10 (2): 505-16. 2014.

Arai, Koki and Stephen Harris. “Recent Developments in Private Monopolization.” Journal of Antitrust Enforcement. 2 (1): 69-99. 2014.

Takizawa, Sayako and Koki Arai. “Abuse of Superior Bargaining Position: the Japanese experience.” Journal of European Competition Law & Practice. 5 (8): 557-562. 2014.

Arai, Koki. “Note on the Need for Rules on Misleading Representation Based on Experimental Evidence.” Applied Economics Letters. 20 (1): 10-17. 2013.

Arai, Koki. “Analysis of the motivation for a joint venture to provide a high-quality music download service for mobile phones.” Asian Journal of Law and Economics. 4 (1-2): 29-59. 2013.

Arai, Koki. “Effect of Institutions: Analysis of Japanese Municipal Public Procurement.” International Journal of Public Administration. 36 (9): 638-48. 2013.

Arai, Koki. “Patent, Competition Policy and Growth. ” Journal of Technology Law and Policy. 18(1): 83-100. 2013.

Arai, Koki. “Case Studies of Bid-Rigging and Procurement Reform Assessment in Fuel Oil Supply in Japan and Korea.” Journal of Public Procurement. 12(2) 249-275. 2012.

Arai, Koki. “Administrative Performance and Legitimacy: An Elaboration Likelihood Approach to Competition Authorities in Japan and the United States.” Public Performance & Management Review. 36(1): 54-78. 2012.

Arai, Koki, Ikuo Ishibashi, and Rieko Ishii-Ishibashi. “Research and Analysis on Bid-Rigging Mechanisms.” Japan and the World Economy. 23(1) 1-5 (2011)

Arai, Koki. “Patent Quality and Pro-Patent Policy.” Journal of Technology Management & Innovation. 5(4) 1-9. (2010).

Arai, Koki. “Satisfaction with Preliminary Injunctions and Merits.” Journal of Japanese Law. 15, 107-125 (2010).

Mizuno, Tomomichi, Koki Arai, Chizuru Ikeda, and Nobufumi Nishimura. “Vertical integration with fixed cost in an upstream market: NSK/Amatsuji merger.” Economics Bulletin. 29(3), 2438-2448. (2009).

Arai, Koki. “Recent Economics at the Japanese Fair Trade Commission --Revision of the Business Combination Guidelines and Case Analysis--.” World Competition. 31(3), 449-472. (2008). 

Arai, Koki. “Fact-Finding Based on Economic Circumstantial Evidence: Applying Economic Analysis to the Exchange of Information and Conjectured Bid-Rigging Mechanisms.” Japanese Economy. 35(3), 3-33. (2008).

Arai, Koki. “An Airline Merger in Japan: a case study revealing principles of Japanese merger control.” Journal of Industry, Competition and Trade. 4(3). 207-222. (2004).

Arai, Koki. “Recent Development of Japanese Antitrust Policy Regarding Intellectual Property Rights.” Antitrust Bulletin. 46 Fall 591-609. (2001)

Past Experiences:

·        Professor of Economics—Shumei University, Faculty of Management and Administration

·         Senior Researcher for Economic Analysis—General Affairs Division, Economic Affairs Bureau, JFTC

·         Deputy Director-General—Competition Policy Research Center, JFTC 

·         Senior Researcher for Litigation—General Affairs Division, Secretariat, JFTC 

·         Director—Economic Research Office, Economic Affairs Bureau, JFTC 

·         Senior Examiner—Mergers and Acquisitions Division, Economic Affairs Bureau, JFTC 

·         Senior Planning Officer—International Affairs Division, Secretariat, JFTC 

·         Associate Professor of Economics—The Institute of Social and Economic Research of Osaka University

·         First Secretary—Japanese Embassy, Washington DC 

·         Government Staff—several positions in the Secretariat, Economic Affairs Bureau, and Investigation Bureau, JFTC, including being on loan to the Ministry of International Trade and Industry)

Address:

Postal Address: 2-2-1, Hitotsubashi, Chiyoda-ku Tokyo 101-8437,Japan 

Telephone: : +81 (0)3-3237-2789 

E-mail: koki.arai<<at>>nifty.ne.jp