1. C. T. Wells Professor, Project Management, Dept. of Civil, Architectural and Environmental Engineering, Univ. of Texas at Austin, 1 Univ. Station C1752, Austin, TX 78712.
2. Postdoctoral Fellow, Dept. of Architecture and Civil Engineering, City Univ. of Hong Kong, 83 Tat Chee Ave., Kowloon Tong, Hong Kong (corresponding author).
3. Formerly, Graduate Research Assistant, Dept. of Civil, Architectural and Environmental Engineering, Univ. of Texas at Austin, 1 University Station C1752, Austin, TX 78712.