1. Duke Energy Distinguished Professor and Director GIEES, CARC 236, Univ. of North Carolina, 9201, Univ. City Blvd., Charlotte, NC 28223 (corresponding author). E-mail: hiinyang@uncc.edu
2. Graduate Research Assistant, GIEES and Dept. of Civil Engineering, Univ. of North Carolina, 9201, Univ. City Blvd, Charlotte, NC 28223.