1. Associate Professor, Shijiazhuang Railway Institute, Shijiazhuang, Hebei, People’s Republic of China.
2. Associate Professor, Civil and Structural Engineering Dept., Hong Kong Polytechnic Univ., Hunghom, Kowloon, Hong Kong, People’s Republic of China.
3. Research Fellow, School of Civil and Resource Engineering, Univ. of Western Australia, Crawley, Australia.