Masashi UMEZAWA

English   Japanese
Mailing Address:
Department of Business Economics, School of Management
Tokyo University of Science
1-11-2 Fujimi, Chiyoda-ku, Tokyo 102-0071, JAPAN
e-mail
Office: 626

Education
Ph.D., Keio University, Japan
M.S., Administrative Engineering, Keio University, Japan
B.S., Administrative Engineering, Keio University, Japan

Employment
2011-present: School of Management, Tokyo University of Science, Associate Professor, Professor.
2004-2011: Faculty of Business Administration, Daito Bunka University, Japan, Assistant Professor, Associate Professor.
2003-2004: Institute of Policy and Planning Sciences, University of Tsukuba, Japan, Research Associate ('Joshu' in Japanese).

Visiting Position
2008-2009: Dept. of Economics, University of Rochester, USA, Visiting Scholar.
2017-2018: Dept. of Economics, Michigan State University, USA, Visiting Scholar.

Research Interests
Microeconomics, Industrial Organization (Theory), Game Theory, Management Science

Grants
Koizumi Shinzo Memorial Scholarship, Keio University, 2000.
Research grant of Keio Leading-edge Laboratory of Science and Technology, 2000 2002.
Grant-in-Aid for International Conferences of Operations Research Society of Japan, 2001.
Grant for the Advancement of Research at the Graduate Schools of Keio University, 2002.
University of Tsukuba Research Fellowship, 2003.
Grant-in-Aid for Young Scientists (B) (19710135), The Ministry of Education, Culture, Sports, Science and Technology, Japan, (Principal Investigator) 2007 2009.
Grant-in-Aid for Scientific Research (C) (23510184), The Ministry of Education, Culture, Sports, Science and Technology, Japan, (Principal Investigator) 2011 2013.
Grant-in-Aid for Scientific Research (C) (26380320), The Ministry of Education, Culture, Sports, Science and Technology, Japan, (Principal Investigator) 2014 2018.
Grant-in-Aid for Scientific Research (C) (20K01619), The Ministry of Education, Culture, Sports, Science and Technology, Japan, (Principal Investigator) 2020 present.

Professional Activities
Associate Editor: Journal of the Operations Research Society of Japan (April 2004 - March 2006, April 2012 - March 2016)

Membership
Game Theory Society
The Econometric Society
Society for Social Choice and Welfare
INFORMS (Institute for Operations Research and Management Sciences)
Japanese Economic Association
Operations Research Society of Japan

Refereed Articles

  • Impact of technology development costs on licensing form in a differentiated Cournot duopoly, (with T. Kitagawa and Y. Masuda), International Journal of Economic Theory (2020) 16, no. 2, June, 153-166. (DOI: 10.1111/ijet.12175).

  • Patent strength and optimal two-part tariff licensing with a potential rival, (with T. Kitagawa and Y. Masuda), Economics Letters (2014) 123, no.2, May, 227231. (DOI: 10.1016/j.econlet.2014.02.011).

  • The replacement principle for the provision of multiple public goods on tree networks, Social Choice and Welfare (2012) 38, no.2, February, 211-235. (DOI: 10.1007/s00355-010-0526-x).

  • Coalitionally strategy-proof social choice correspondences and the Pareto rule, Social Choice and Welfare (2009) 33, no.1, June, 151-158. (DOI: 10.1007/s00355-008-0351-7).

  • Modified structural modeling method and its application -behavior analysis of passengers for East Japan Railway Company-, (with K. Nagata, M. Amagasa, and D. Cui), Industrial Engineering & Management Systems (2008) 7, no.3, December, 245-256.

  • Impossibility and possibility theorems for social choice functions on incomplete preference profiles, (with K. Ando, M. Tsurutani, and Y. Yamamoto), Pacific Journal of Optimization (2007) 3, no.1, February, 11-25.

  • Social welfare function for restricted individual preference domain, (with K. Ohbo, M. Tsurutani, and Y. Yamamoto), Pacific Journal of Optimization (2005) 1, no.2, May, 315-325.

  • Knowledge markets: knowledge management through market mechanisms, (with Y. Awazu and S. Yamakawa). In: K.C. Desouza (ed.), New Frontiers in Knowledge Management. Palgrave Macmillan, United Kingdom (2005), 99-116.

  • A cost allocation problem arising in hub-spoke network systems, (with N. Matsubayashi, Y. Masuda, and H. Nishino), European Journal of Operational Research (2005) 160(3), February, 821-838.

  • A model of knowledge management through intra-firm market, (with S. Yamakawa), Journal of the Japan Society for Management Information (2004) 13, no. 1, June, 33-56 (in Japanese).

  • Evaluating all Bertrand-Nash equilibria in discrete spatial model, (with N. Matsubayashi, Y. Masuda, and H. Nishino), Journal of the Operations Research Society of Japan (2004) 47, no. 1, March, 25-37.

  • Sufficient conditions for nonempty core of minimum cost forest games, (with H. Nishino), Journal of the Operations Research Society of Japan (2003) 46, no.1, June, 35-43. Link

  • Merger effect of two competitive firms on network equilibrium model, (with N. Matsubayashi, Y. Masuda, and H. Nishino), European Journal of Operational Research (2002) 137(2), March, 434-447.

  • Multi-facility location problem with nonincreasing piecewise linear demand on a tree, (with H. Nishino), Journal of the Operations Research Society of Japan (2000) 43, no. 2, June, 333-340. Link


  • Last Updated: June, 2020.