1. Ph.D. Candidate, Dept. of Civil and Environmental Engineering, Univ. of Michigan, 1318 G.G. Brown, 2350 Hayward Ave., Ann Arbor, MI 48109 (corresponding author).
2. M.S.E. Student, Dept. of Electrical Engineering and Computer Science, Univ. of Michigan, 4741 CSE Building, 2260 Hayward Ave., Ann Arbor, MI 48109.
3. Associate Professor, Dept. of Civil and Environmental Engineering, Univ. of Michigan, 2340 G.G. Brown, 2350 Hayward Ave., Ann Arbor, MI 48109.
4. Professor, Dept. of Electrical Engineering and Computer Science, Univ. of Michigan, 4741 CSE Building, 2260 Hayward Ave., Ann Arbor, MI 48109.