1. Members, ASCE
2. Assoc. Prof., Public Works Dept., Facu. of Engrg., Cairo Univ., Egypt. E-mail: renardet@gto.net.om
3. Lead Staff, Ctr. for Advanced Aviation Sys. Devel., The Mitre Corp., 1820 Dolley Madison Blvd., McLean, VA 22102-3481; formerly, Airport Consultant, Fairfax, VA. E-mail: smumayiz@mitre.org