1. Senior Researcher, Ocean Development System Research Division, Korea Ocean Research and Development Institute/Korea Research Institute of Ships and Ocean Engineering, Yuseong P.O. Box 23, Daejeon 305-600, Republic of Korea.
2. Postdoctoral Researcher, Dept. of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology, 373-1 Guseong-dong, Daejeon 305-701, Republic of Korea.
3. Professor, Dept. of Civil Engineering, Joongbu Univ., 101 Daehak-lo, Chubu-myeon, Geumsan-gun, Chungnam 312–702, Republic of Korea.
4. Professor, Dept. of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology, 373-1 Guseong-dong, Daejeon 305-701, Republic of Korea.