1. Associate Professor, Faculty of Engineering and Industrial Science (H38), Swinburne Univ. of Technology P.O Box 218, Hawthorn VIC 3122, Melbourne, AU (Corresponding author), e-mail: aarulrajah@swin.edu.au
2. Lecturer, Swinburne Univ. of Technology, Melbourne, AU.
3. Ph.D. Student, Swinburne Univ. of Technology, Melbourne, AU.
4. Senior Principal/Director, DST Consulting Engineers Inc., Thunder Bay, Ontario, CA.