1. Associate Professor, Dept. of Civil Engineering, Hong Kong Univ. Science and Technology, Clear Water Bay, Kowloon, Hong Kong.
2. Formerly Postgraduate Student, Dept. Civil Engineering, Hong Kong Univ. Science and Technology, Clear Water Bay, Kowloon, Hong Kong.
3. Assistant Professor, Dept. of Civil Engineering, Hong Kong Univ. Science and Technology, Clear Water Bay, Kowloon, Hong Kong.