- 2010/04 - 現在 Sophia University Professor Emeritus
- 2007/10 - 2010/03 Faculty of Foreign Studies Institute of Iberoamerica Director
- 1992/04 - 2010/03 Sophia University Faculty of Foreign Studies, Department of Luso-Brazilian Studies Professor
- 2006 - 2008 :財団法人 海外日系人協会 常務理事
- 2006 - 2008 :The Association of Nikkei & Japanese Abroad Standing Director
- 2003/01 - 2005/03 Sophia University Faculty of Foreign Studies Dean
- 2003 - 2004 :上智大学 外国語学部長
- 2003 - 2004 :Sophia University Dean of the Faculty of Foreign Studies
- 2000/04 - 2002/03 Sophia University Dean
- 2000 - 2002 :上智大学 学事部長
- 2000 - 2002 :Sophia University Director of the Office of Academic Affairs
- 1992/04 - 1996/03 Sophia University Faculty of Foreign Studies, Department of Luso-Brazilian Studies Director
- 1985/04 - 1992/03 Sophia University Faculty of Foreign Studies, Department of Luso-Brazilian Studies Associate Professor
- 1983/04 - 1985/03 Sophia University Faculty of Foreign Studies, Department of Luso-Brazilian Studies Lecturer
- 1982/03 - 1983/03 日本経済新聞 外報部記者
- 1982 - 1983 :日本経済新聞社 外報部記者
- 1982 - 1983 :The Nihon Keizai Shimbun Foreign News Correspondent
- 1978/03 - 1982/02 日本経済新聞 中南米特派員(サンパウロ支局)
- 1978 - 1982 :日本経済新聞社サンパウロ支局 特派員
- 1978 - 1982 :The Nihon Keizai Shimbun, Sao Paulo Bureau Bureau Representative
- 1973/09 - 1978/02 :日本経済新聞社 産業部記者
- 1973 - 1978 :The Nihon Keizai Shimbun Industrial News Correspondent
- 1972/10 - 1973/09 :財団法人 国際開発センター 研究助手
- 1972 - 1973 :The International Development Center of Japan Assistant Researcher
- 1970/04 - 1972/09 :日本経済新聞社 証券部記者
- 1970 - 1972 :The Nihon Keizai Shimbun Correspondent
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