1. Geotechnical Engineer, Terrasense, LLC, 45 Commerce Way, Totowa, NJ 07512; formerly, Graduate Research Assistant, Dept. of Civil, Architectural and Environmental Engineering, Missouri Univ. of Science and Technology, Rolla, MO 65409-0030.
2. Assistant Professor, Dept. of Civil, Architectural and Environmental Engineering, Missouri Univ. of Science and Technology, 1401 North Pine St., Rolla, MO 65409-0030 (corresponding author).