1. Assistant Professor, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong Univ., Shanghai 200241, China; Dept. of Civil and Environmental Engineering, Rutgers, State Univ. of New Jersey, Piscataway, NJ 08854.
2. Associate Professor, Dept. of Civil and Environmental Engineering, Rutgers, State Univ. of New Jersey, Piscataway, NJ 08854 (corresponding author).
3. Professor, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong Univ., Shanghai 200241, China.