1. Associate Professor, Dept. of Architectural Engineering, Hong Ik Univ., Choongchung Namdo, Korea 339-701.
2. Graduate Assistant, Dept. of Architectural Engineering, Hong Ik Univ., Choongchung Namdo, Korea 339-701.
3. Assistant Professor, Dept. of Architectural Engineering, Hong Ik Univ., Choongchung Namdo, Korea 339-701.