- 1997 - 2001 National Graduate Institute for Policy Studies
- 1997 - 2001 National Graduate Institute for
- 1977 - 1997 埼玉大学 大学院 政策科学研究科 教授
- 1977 - 1997 Saitama University, Professor
- 1966 - 1977 慶応義塾大学 工学部 助教授
- 1966 - 1977 Keio University, Associate Professor
- 1963 - 1966 Tokyo University of Agriculture and Technology Faculty of Engineering
- 1963 - 1966 Tokyo University of Agriculture and
- Policy Studies, Professor
- Engineering, Associate Professor
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