1. Project Executive, Petronas (Sudan) Limited.
2. Assistant Professor, Univ. of Kansas, Dept. of Civil, Environmental, and Architectural Engineering, 1 Eaton Hall, 1530 W. 15th St., Room 2134-D, Lawrence, KS 66045-7609.
3. Professor, Univ. of Waterloo, Dept. of Civil Engineering, 200 University Ave., West Waterloo, Ontario, N2L 3G1 Canada.