1. Senior Research Scientist, CSIRO Division of Sustainable Ecosystems, P.O. Box 56, Highett, Victoria 3190, Australia; formerly, Research Scientist and Project Leader, CSIRO Division of Manufacturing and Infrastructure Technology. E-mail: Chi-hsiang.Wang@csiro.au
2. Professor, Dept. of Civil Engineering, National Taipei Univ. of Technology, 1 Sec. 3, Jungshiau E. Rd., Taipei 106-08, Taiwan. E-mail: changsy@ntut.edu.tw