1. Postdoctoral Researcher, Research Institute of Industrial Science, Hanyang Univ., 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea.
2. Professor, Dept. of Civil and Environmental Engineering, Hanyang Univ., 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea (corresponding author).