1. Associate Professor, Dept. of Civil and Structural Engineering, Hong Kong Polytechnic Univ., Hunghom, Hong Kong.
2. Research Associate, Dept. of Civil and Structural Engineering, Hong Kong Polytechnic Univ., Hunghom, Hong Kong.
3. Professor, School of Civil and Hydraulic Engineering, Da Lian Univ. of Technology, China.
4. Research Student, Dept. of Civil and Structural Engineering, Hong Kong Polytechnic Univ., Hunghom, Hong Kong.