1. Assistant Professor, Dept. of Civil Engineering, Florida Atlantic Univ., 777 Glades Rd., Box 3091, Boca Raton, FL 33431-0091.
2. Dean of Research and Graduate Studies, Univ. of Miami, 1251 Memorial Dr., McArthur 325, Coral Gables, FL 33146-0630.
3. Research Fellow, Dept. of Civil, Architecture, and Environmental Engineering, Univ. of Miami, 1251 Memorial Dr., McArthur 325, Coral Gables, FL 33146-0630.
4. Professor, Dept. of Management Science, Univ. of Miami, 417 Jenkins Building, Coral Gables, FL 33124-6544.