1. Lecturer, Dept. of Architecture, Catholic Univ. of Daegu, 330, Kuemnak-ri, Hayang-eup, Gyeongsan-si, Gyeongbuk 712-702, South Korea.
2. Associate Professor, Dept. of Architecture, Seoul National Univ., San 56-1, Shinlim-Dong, Kwanak-Gu, Seoul 151-744, South Korea. (corresponding author)