Oshima Hisayuki

2019 - 2022 Historical origins of the gender wage gap: Study on panel wage data of the Mitsui Shipping Line

2018 - 2021 A Fundamental Study on the Continuity and Succession of Prewar and Postwar Shosha Organizations and Functions

2016 - 2020 Comparative study of sales organization structures, risk take and risk management in general trading companies

2016 - 2019 A historical study on the school education system before World War II and the formation of international human resorces

2014 - 2019 Analysis of education, tenure, and promotion of employees of the Mitsui & Co. from 1910 to 1941.

2015 - 2018 Overseas Expansion and Internal Labor Markets of Companies in Prewar Japan: An Empirical Analysis of the Sugar Industry in Colonial Taiwan Utilizing Employee Records

2013 - 2016 Total analysis to the personnel affairs of Mitsui & Co., before the World War Second.

2013 - 2016 Japanese Trading Firms and Trade among Pacific Rim Countries before World War II

2012 - 2015 Formation of Internal Labor Market in General Trading House: Dynamics of Education, Tenure and Promotion at Mitsui & Co. in the Interwar Period

2011 - 2014 General study on economic development and generation of the market on the colonial Taiwan

2010 - 2014 Risk management at general trading companies between the world wars

2010 - 2012 Research on the Activity of Japanese Trading Companies in North America before World War II

2010 - 2012 A study of the financial capabilities of prewar general tradingcompanies, with a central focus on analysis of the ledgers of Mitsui & Co., Ltd.

2006 - 2008 General Study of Seized Documents of Japanese Shosha in NARA

2005 - 2006 A Proof Study on the Supporting Business of General Trading Company in Pre-war-Japan

2003 - 2005 General Study on the transportation and carrier in the period between World War I and World War II.

2002 - 2004 戦前期日本商社の輸送業務と海運市場-傭船市場の成立・変容と運輸政策の展開-

1998 - 1999 日本商社における運輸政策の特質-戦前期の海上輸送を中心として-

Study on General Trading Company and Shipping Industry