- 1982 Waseda University, Research Associate
- 1984 Waseda University, Assistant Professor
- 1986 Waseda University, Associate Professor
- 1994 Waseda University, Professor
Protection against liquefaction induced geotechnical hazard.
Management and maintenance o f underground infrastructure.
Themes of graduation thesis:
Novel geotechnical soil improvement technology.
Asset management of tunnels and pavement for transportation networks.
Tunnel engineering committee chair, Japan Society of Civil Engineers, Japanese Geotechnical Society, Japan Tunneling Association, Japan Grouting Association and Japan Railway Technical Research Institute.Board member of Japan Society of Civil Engineers, the Japanese Geotechnical Society, the Japan Tunneling Association and Japan Railway Technical Research Institute.