1. Professor, Dept. of Architectural Engineering, Sunmoon Univ., Kalsan-ri, Tangjeong-myeon, Asan-si 880-160, Korea.
2. Professor, Dept. of Architectural Engineering, Tongmyong Univ., 535 Yongdang-dong, Nam-gu, Busan 608-711, Korea (corresponding author).
3. Senior Researcher Engineer, MIDAS IT Co., Ltd., SKn Technopark Tech Center, 15th Fl., 190-1 Sangdaewon 1-dong, Jungwon-gu, Seongnam, Gyeonggi-do 462-809, Korea.