1. Faculty of Design and Architecture, Universiti Putra Malaysia, Serdang 43400, Malaysia
2. Department of Electrical and Electronic Engineering, University of Manchester, Manchester M13 9PL, UK
3. Institute for Advanced Studies, Universiti Malaya, Kuala Lumpur 50603, Malaysia
4. College of Public Administration, Nanjing Agricultural University, Nanjing 210095, China