1. Professor, Dept. of Construction Management, College of Management, Tianjin Univ. of Technology, 391 Bingshui West Rd., Tianjin 300384, China.
2. Master’s Candidate, Dept. of Construction Management, College of Management, Tianjin Univ. of Technology, 391 Bingshui West Rd., Tianjin 300384, China.
3. Ph.D. Candidate, Dept. of Construction Management, College of Management, Tianjin Univ. of Technology, 391 Bingshui West Rd., Tianjin 300384, China (corresponding author).