1. Research Scientist, CSIRO Manufacturing and Infrastructure Technology, PO Box 56, Highett, Victoria 3190, Australia; formerly, COE Research Fellow, Div. Urban Environment Systems, Research Center for Advanced Science and Technology, Univ. of Tokyo, 4-6-1 Komaba, Meguro-Ku, Tokyo, 153, Japan.
2. Lecturer, Division Urban Environment Systems, Research Center for Advanced Science and Technology, Univ. of Tokyo, 4-6-1 Komaba, Meguro-Ku, Tokyo, 153, Japan.
3. Associate Professor, Dept. of Environmental Engineering, Inha Univ., 253 Yonghyun-Dong, Nam-Ku, Inchon 402-751, Korea.
4. Professor, Dept. of Urban Engineering, Univ. of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-8656, Japan.