1. Ph.D. Student, Dept. of Civil and Environmental Engineering and Geodetic Science, The Ohio State Univ., Columbus, OH 43210.
2. Assistant Professor, Dept. of Civil and Environmental Engineering and Geodetic Science, The Ohio State Univ., Columbus, OH 43210 (corresponding author).
3. Professor, Dept. of Civil and Environmental Engineering and Geodetic Science, The Ohio State Univ., Columbus, OH 43210.