1. Grad. Stud., Graduate School of Engineering, Utsunomiya Univ., M.Eng.
2. Assoc. Prof., Faculty of Regional Design, Utsunomiya Univ., Dr.Eng.
3. Prof., Faculty of Regional Design, Utsunomiya Univ., Dr.Eng.
4. Senior Researcher, Dept. of Health & Welfare Service Research, National Institute of Public Health, Dr.Med.