About Nakane, Youji
About Showa Concrete Industries Co., Ltd.
About Okuda, Masao
About Okuda Construction Company
About Kani, Yukihiko
About Eiton Co., Ltd.
About Hayakawa, Kiyoshi
About Dept. of Science and Engineering, Ritsumeikan Univ.
About Proceedings of the International Offshore and Polar Engineering Conference