1. Distinguished Professorial Fellow, Dept. of Civil Engineering, Curtin Univ., GPO Box U1987, Perth, WA, Australia; Visiting Research Professor, Center for Sustainable Healthy Buildings, Kyung Hee Univ., Yongin, 446-701, Republic of Korea.
2. Lecturer, School of Built Environment, Curtin Univ., GPO Box U1987, Perth, WA, Australia.
3. Professor, Dept. of Architectural Engineering, Kyung Hee Univ., Yongin 446-701, Republic of Korea (corresponding author).
4. Associate Professor, Dept. of Housing and Interior Design, Kyung Hee Univ., Seoul 446-701, Republic of Korea.