1. Associate Professor, Dept. of Architectural Engineering, Yonsei Univ., Seoul 120-749, Korea (corresponding author).
2. Ph.D. Candidate, Dept. of Architectural Engineering, Yonsei Univ., Seoul 120-749, Korea.
3. Researcher, Asset Management Division, Mate Plus, 9th Floor, Financial News Building 24-5 Yeouido-dong, Yeongdeungpo-gu, Seoul 150-877, Korea; formerly, Graduate Research Assistant, Dept. of Architectural Engineering, Yonsei Univ., Seoul 120-749, Korea.
4. Professor, Dept. of Architectural Engineering, Yonsei Univ., Seoul 120-749, Korea.