Researcher Ishikawajima-Harima Heavy Industries Limited company, Tokyo, 1983-1987. Guest scientist researcher National Bureau of Standards, Gaithersburg, Maryland, 1986. Researcher Agency of Industrial Science and Technology, Tsukuba, Japan, 1986-1988.
Lecturer Yokohama (Japan) National University, 1988-1992, associate professor, since 1992.
Member committee Ministry International Trade and Industry, Tokyo, 1992, 95, Ministry of Welfare, Tokyo, since 1993, Ministry of home Affairs, Tokyo, 1993-1995. Member Japan Association for Fire Science and Engineering (editor journal. since 1988), Japan Society Safety Engineering (editor journal. since 1996), Japanese section Combustion Institute, International Association for Fire Safety Science.
1983 - 1987
1986 - 1988