1. a Faculty of Engineering, Department of Mechanical Engineering , The University of Kyushu , Hakozaki 6-10-1 Higashi-ku, Fukuoka , 812 , Japan
2. b Prime Mover Division , Kawasaki Heavy Industries, LTD, Assembly Section , Higashi Kawasaki-cho 3-1-1 Chuou-ku, Kobe , 650-11 , Japan
3. c Toshiba Corporation, Nuclear Engineering Laboratory , Ukishima-cho 4-1, Kawasaki-ku , Kawasaki , 210 , Japan