1. Senior Lecturer, Dept. of Architectural Engineering, Mokpo National Univ., 61, Dorim-Ri, Chunggye-Myon, Muan-Gun, Chonnam 534-729, Korea.formerly, Lecturer, Dept. of Architectural Engineering, Korea Univ., 5Ga, Anam-Dong, Sungbuk-Gu, Seoul 136-701, Korea.
2. Assistant Professor, Dept. of Architectural and Civil Engineering, Halla Univ., San 66, Heungup, Wonju, Kangwon 220-712, Korea.
3. Professor, Dept. of Architectural Engineering, Korea Univ., 5Ga, Anam-Dong, Sungbuk-Gu, Seoul 136-701, Korea.