category e1 Full written paper- Refereed Proceedings, author - Hao Shi signed VUIR pt.20/7/12. MA 3/7/13. HERDC documentation added to dark upload - HD 19/6/20. -- Generic Permission Form added to Dark Archive 28.10.20-MMM. ---------------------- From ScienceDirect zipfile, CC license on p.1 of pdf. LL 6/1/2021