March 1983 B.Eng. in Civil and Environmental Engineering, Tohoku University March 1985 M.Eng. in Civil and Environmental Engineering, Tohoku University March 1988 Coursework Completed without Degree, Tohoku University April 1988 Research Associate, Faculty of Engineering, Tohoku University March 1990 D.Eng. in Civil and Environmental Engineering, Tohoku University April 1994 Researcher, National Institute for Environmental Studies, Ministry of Environment November 1997 Associate Professor, Graduate School of Engineering, Tohoku University August 2001 Professor, Graduate School of Engineering, Tohoku University