1. a Associate Professor, CAGE Dept , New Mexico State University , Las Cruces, NM 88003
2. b Centennial Professor, Civil and Environ. Engrg. Dept , Vanderbilt University , Nashville, TN 37235
3. c Assistant Professor, Civil Engrg. Dept , Tae Jon University , Tae Jon, S Korea
4. d Graduate Assistant, CAGE Dept , New Mexico State University , Las Cruces, NM 88003
5. e Engineer, Geoscience Consultants Ltd. , Albuquerque, NM 87102