1. Professor, Swinburne Univ. of Technology, Melbourne, VIC 3122, Australia; Faculty of Science, Engineering and Technology (H38), Swinburne Univ. of Technology, P.O. Box 218, Hawthorn VIC 3122, Australia (corresponding author).
2. Research Student, Swinburne Univ. of Technology, Melbourne, VIC 3122, Australia.
3. Ph.D. Student, Suranaree Univ. of Technology, Nakhon Ratchasima 30000, Thailand.
4. Professor, Suranaree Univ. of Technology, Nakhon Ratchasima 30000, Thailand.
5. Senior Technical Officer, Swinburne Univ. of Technology, Melbourne, VIC 3122, Australia.
6. Lecturer, Univ. of Melbourne, Melbourne, VIC 3010, Australia.