1. Fellow, ASCE
2. Postdoctoral Fellow, Dept. of Mech. Engrg., The Univ. of Hong Kong, Hong Kong.
3. Res. Assoc., Dept. of Mech. Engrg., The Univ. of Hong Kong, Hong Kong.
4. Sir Robert Ho Tung Chair Prof., Dept. of Mech. Engrg., The Univ. of Hong Kong, Hong Kong.