1. Ph.D. Candidate, Faculty of Engineering and Information Technology, Univ. of Technology, Sydney 2007, Australia.
2. Senior Lecturer of Geotechnical Engineering, Faculty of Engineering and Information Technology, Univ. of Technology, Sydney 2007, Australia (corresponding author).
3. Associate Professor of Geotechnical Engineering, Faculty of Engineering and Information Technology, Univ. of Technology, Sydney 2007, Australia.