1. Planning Engineer, Dept. of Planning, Orascom Construction Industries, 2005 Corniche El Nil, Boulaq, Cairo, Egypt.
2. Associate Professor of Construction Engineering and Management, Cairo Univ., Giza, Egypt; Affiliate Faculty, Dept. of Construction Management, Univ. of Washington, 120 Architecture Hall, Box 351610, Seattle, WA 98195-1610.
3. Associate Professor and Construction Engineering and Management Program Coordinator, Dept. of Civil and Environmental Engineering, Univ. of Tennessee, Knoxville, TN.