- 2002 - 2011 :政策研究大学院大学 客員教授
- 2002 - 2011 :Visiting Professor, the National Graduate Institute for Policy Studies
- 2006 - -:日本大学国際関係学部(研究所)教授
- 2006 - -:Professor, INtenational Relations Department, Nihon University
- 1981 - 2000 :世界銀行 エコノミスト(Lead Economist)
- 1981 - 2000 :Lead Economist, World Bank
- 1972/08 - 1981/01 1972-1981:国連貿易開発会議 (UNCTAD) (1972年8月 - 1981年1月)
- 1972 - 1981 :Economic Affairs Officer, United Nattions Conference on Trade and Development (UNCTAD)
- Nihon University College of International Relations College of International Relations Professor
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