1. Assistant Professor, Dept. of Construction Engineering and Management, Malaysia Univ. of Science and Technology, GL33 Block C, 17 Jalan SS7/26, Petaling Jaya, Selangor, Malaysia 47301.
2. A. James Clark Endowed Chair Professor of Project Management, Dept. of Civil and Environmental Engineering, Univ. of Maryland, 1188 G.L. Martin Hall, College Park, MD 20742–3021; formerly, Professor, School of Civil Engineering, Purdue Univ., 550 Stadium Mall Dr., West Lafayette, IN 47907–2051.