1. Research Assistant Professor, Dept. of Civil and Environmental Engineering, and Junior Fellow, Institute for Advanced Study, Hong Kong Univ. of Science and Technology, Clear Water Bay, Hong Kong, China.
2. Formerly, M.Phil. Student, Dept. of Civil and Environmental Engineering, Hong Kong Univ. of Science and Technology, Clear Water Bay, Hong Kong, China.
3. Chair Professor, Dept. of Civil and Environmental Engineering, Hong Kong Univ. of Science and Technology, Clear Water Bay, Hong Kong, China (corresponding author).