1. Professor, Dept. of Construction Management, Tianjin Univ., Tianjin 300072, P. R. China.
2. Research Student, Dept. of Construction Management, Tianjin Univ., Tianjin 300072, P. R. China.
3. Associate Professor, Dept. of Construction Management, Tianjin Univ., Tianjin 300072, P. R. China (corresponding author).
4. Graduate Student CRGP, Collaboratory for Research on Global Projects, Dept. of Civil and Environmental Engineering, Stanford Univ., Stanford, CA 94305.