1. Assistant Professor, Civil and Structural Engineering Dept., The Hong Kong Polytechnic Univ., Hung Hom, Hong Kong.
2. Associate Professor, Construction Management Dept., Tsinghua Univ., Beijing 100084, China (corresponding author).
3. Assistant Professor, Planning Dept., East Carolina Univ., Greenville, NC 27858.
4. Professor and Head, Dept. of Construction Management and Real Estate, Tongji Univ., Shanghai 210092, China.