Keiai University, Professor
- 1982
- Graduate, Doctoral Program in Social Engineering, Graduate School of Division of Science and Engineering, Tokyo Institute of Technology
- 1984
- First Chief of Road Economic Research Office, Planning Division, Road Bureau, Ministry of Construction
- 1986
- Associate Professor, Faculty of Economics, Fukuoka University
- 1997
- Professor, Faculty of Commerce and Management, Hitotsubashi University
- 2017
- Professor, Faculty of Economics, Keiai University