1. Ph.D. Student, Dept. of Architectural Engineering, Pennsylvania State Univ., 104 Engineering Unit, University Park, PA 16802.
2. Assistant Professor, Dept. of Architectural Engineering, Pennsylvania State Univ., 104 Engineering, Unit A, University Park, PA 16802 (corresponding author).
3. Performance Contractors Distinguished Associate Professor, Dept. of Construction Management, Louisiana State Univ., 214-B Old Forestry Building, Baton Rouge, LA 70803.
4. Associate Professor, College of Engineering, Qatar Univ., P.O. Box 2713, Doha, Qatar.