- 2006/04 - 2009/03 Exective Director, Vice- President
- 2001/04 - 2009/03 Professor, Graduate School of Environment and Information Sciences, Yokohama National University
- 1992/04 - 2001/03 Professor, Faculty fo Business Administration, Yokoahama National University
- 1995/03 - 1996/01 Research Fellow, Southern Cross University, Australia
- 1982/04 - 1992/03 Associate Professor, Faculty fo Business Administration, Yokohama National University
- 1973/07 - 1982/03 Research Associate, Institute of Environmenatal Science & Technology, Yokohama National University
- Yokohama National University Officer
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