1. Grad. Stud., Tokyo Tech, M. Eng.
2. Prof., Structural Engineering Research Center, Tokyo Tech, Dr. Eng.
3. Assoc. Prof., Structural Engineering Research Center, Tokyo Tech, Dr. Eng.
4. Assist. Prof., Tokyo Univ. of Science, Dr. Eng.
5. Senior Researcher, Structural Eng. Dept., Building Research Institute, Dr. Eng.