1. Associate Professor, Dept. of Civil Engineering, Birzeit Univ., Birzeit, P.O. Box 14, Palestine (via Israel).
2. Director of Projects, PECDAR and Assistant Professor, Dept. of Electrical Engineering, Birzeit Univ., Birzeit, P.O. Box 14, Palestine (via Israel).
3. Associate Professor, Dept. of Civil Engineering, Islamic Univ. of Gaza, Palestine (via Israel).
4. Director and Professor, Center for Technology and Systems Management, Dept. of Civil and Environmental Engineering, Univ. of Maryland, College Park, MD 20742.