1. Associate Professor, Dept. of Architectural Engineering, Sunmoon Univ., Tangjeong-myeon, Asan-si, Chungnam, 336-708, Republic of Korea.
2. Senior Research Engineer, MIDAS Information Technology Co., Ltd., SKn Technopark Tech Center 15th Floor, 190-1 Sangdaewon1-dong, Jungwon-gu, Seongnam, Gyeonggi-do, 462-721, Republic of Korea.
3. Assistant Professor, Dept. of Architectural Engineering, Sungkyunkwan Univ., 300 Chunchun, Jangan, Suwon, Kyunggi, 440-746, Republic of Korea.