1. Ph.D. Candidate, Dept. of Architectural Engineering, Kwangwoon Univ., Seoul 447-1, South Korea.
2. Professor, Dept. of Architectural Engineering, Kwangwoon Univ., Seoul 447-1, South Korea.
3. Assistant Professor, Dept. of Architecture and Architectural Engineering, Yonsei Univ., 50 Yonsei-ro, Seoul 130-743, South Korea (corresponding author). ORCID: .