1979-1983—Department of Mechanical Engineering, Doshisha University 1983-1985—Graduate School of Engineering, Doshisha University 1985-1987—Sharp Corporation 1987-2002—Research Associate, Institute of Industrial Science, The University of Tokyo 2002-2003—Lecturer, Institute of Industrial Science, The University of Tokyo 2003-2004—Lecturer, Nippon Institute of Technology 2004-2009—Associate Professor, Nippon Institute of Technology 2009- Present—Professor, Nippon Institute of Technology