1. Postdoctoral Researcher, Purdue Univ., 550 Stadium Mall Dr., West Lafayette, IN 47905 (corresponding author).
2. Graduate Student, Purdue Univ., 465 Northwestern Ave., West Lafayette, IN 47907.
3. Postdoctoral Researcher, Purdue Univ., 550 Stadium Mall Dr., West Lafayette, IN 47905.
4. Professor, School of Civil Engineering, Purdue Univ., 550 Stadium Mall Dr., West Lafayette, IN 47905.
5. Associate Professor, School of Electrical and Computer Engineering, Purdue Univ., 465 Northwestern Ave., West Lafayette, IN 47907.