1. Ph.D. Student, Dept. of Civil Engineering, New Mexico State Univ., P.O. Box 30001, Las Cruces, NM 88003.
2. Professor, Dept. of Civil Engineering, New Mexico State Univ., P.O. Box 30001, Las Cruces, NM 88003.
3. Associate Professor, Dept. of Civil, Environmental and Geomatics Engineering, Florida Atlantic Univ., Bldg. 36, RM 225, Boca Raton, FL 33431.