KEIO RESEARCHERS INFORMATION SYSTEM

Career 【 Display / hide 】

Career 【 Display / hide 】

• 1991.04

  -

  1998.08

  Mitsubishi Research Institute, Inc., Researcher

• 2003.04

  -

  2015.08

  Aoyama Gakuin University, Graduate School of International Management, Professor

Academic Background 【 Display / hide 】

Academic Background 【 Display / hide 】

• 1985.04

  -

  1989.03

  Keio University, Faculty of Economics

  University, Graduated

• 1989.04

  -

  1991.03

  Keio University, Graduate School of Economics

  Graduate School, Completed, Master's course

• 1998.09

  -

  2003.06

  University of California, Los Angeles, Anderson School of Management

  Graduate School, Completed, Doctoral course

Academic Degrees 【 Display / hide 】

Academic Degrees 【 Display / hide 】

• Ph.D. (Management), カリフォルニア大学ロサンゼルス校, 2003.06

• 経済学修士, 慶応義塾大学, 1991.03

Research Areas 【 Display / hide 】

Research Areas 【 Display / hide 】

• Humanities & Social Sciences / Business administration

• Humanities & Social Sciences / Money and finance

Research Keywords 【 Display / hide 】

Research Keywords 【 Display / hide 】

• Corporate strategy

• Corporate finance

Research Themes 【 Display / hide 】

Research Themes 【 Display / hide 】

• Corporate diversification, 

  2003.04

  -

  Present

• Corporate restructuring, 

  2003.04

  -

  Present

• Merger and acquisition, 

  2003.04

  -

  Present

Books 【 Display / hide 】

Books 【 Display / hide 】

• 経営戦略をつかむ

  USHIJIMA TATSUO, 有斐閣, 2010.05

Papers 【 Display / hide 】

Papers 【 Display / hide 】

• Diversification, Organization, and Value of the Firm

  USHIJIMA TATSUO

  Financial Management 45   467 - 499 2016

  Single Work, Accepted

• The roles of closure and selloff in corporate restructuring

  USHIJIMA TATSUO

  Journal of the Japanese and International Economies 38   73 - 92 2015

  Joint Work, Accepted

• The market for corporate subsidiaries in Japan: An empirical investigation of trades among listed firms

  USHIJIMA TATSUO

  Journal of the Japanese and International Economies 31   36 - 52 2014

  Joint Work, Accepted

• Patent rights protection and Japanese foreign direct investment

  USHIJIMA TATSUO

  Research Policy 42   738 - 748 2013

  Single Work, Accepted

• What drives the profitability of Japanese multi-business corporations? A variance components analysis

  USHIJIMA TATSUO

  Journal of the Japanese and International Economies 25   1 - 11 2011

  Joint Work, Accepted

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Papers, etc., Registered in KOARA 【 Display / hide 】

Papers, etc., Registered in KOARA 【 Display / hide 】

• The organization of R&D and innovation outcomes : an empirical study based on patent data

  Ushijima, Tatsuo

  学事振興資金研究成果実績報告書 （慶應義塾大学)  2019

• How do employees benefit from corporate diversification?

  Ushijima, Tatsuo

  科学研究費補助金研究成果報告書 2017

Research Projects of Competitive Funds, etc. 【 Display / hide 】

Research Projects of Competitive Funds, etc. 【 Display / hide 】

• 日本企業のコインシュランス

  2021.04

  -

  2025.03

  MEXT,JSPS, Grant-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Principal investigator

• 日本企業の役員管掌構造：多角化企業を中心とした分析

  2018.04

  -

  2021.03

  MEXT,JSPS, Grant-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Principal investigator

• How do employees benefit from corporate diversification?

  2015.04

  -

  2018.03

  MEXT,JSPS, Grant-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Principal investigator

Courses Taught 【 Display / hide 】

Courses Taught 【 Display / hide 】

• STRATEGIC MANAGEMENT AND CORPORATE STRUCTURE

  2023

• STRATEGIC MANAGEMENT AND CORPORATE STRUCTURE

  2023

• SPECIAL STUDY OF SCIENCE OF BUSINESS ADMINISTRATION

  2023

• SEMINAR: SPECIAL STUDY OF SCIENCE OF BUSINESS ADMINISTRATION

  2023

• SEMINAR: SCIENCE OF BUSINESS ADMINISTRATION

  2023

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