1. Research Fellow, Dept. of Structural Engineering, Univ. of California, San Diego, La Jolla, CA 92093.
2. Professor, Dept. of Structural Engineering, Univ. of California, San Diego, La Jolla, CA 92093.
3. Integrated Production Manager, PDVSA, INTEVEP, Urbanización Santa Rosa, Los Teques, P.O. Box 76343A, Caracas 1070A, Venezuela.