1. Assistant Professor, Dept. of Construction Science, Texas A&M Univ., 3137 TAMU, Langford Building A429, College Station, TX 77843-3137 (corresponding author).
2. Associate Professor, Dept. of Decision Sciences, School of Business, George Washington Univ., 2201 G Street, NW, Washington, DC 20052.
3. Assistant Professor, Dept. of Civil & Environmental Engineering, San Jose State Univ., One Washington Square, San Jose, CA 95192.
4. Ph.D. Candidate, Dept. of Construction Science, Texas A&M Univ., 3137 TAMU, Langford Building A128, College Station, TX 77843-3137.