1. Postdoctoral Fellow, Dept. of Civil and Architectural Engineering, City Univ. of Hong Kong, Tat Chee Ave., Kowloon Tong, Hong Kong.
2. Assistant Professor, Dept. of Civil and Architectural Engineering, City Univ. of Hong Kong, Tat Chee Ave., Kowloon Tong, Hong Kong (corresponding author).
3. Teaching Assistant, Institute of Project Management, School of Mechanics and Civil Engineering, China Univ. of Mining and Technology, PRC China.