1. School of Engineering and Built Environment, Wolverhampton University, Wulfruna Street, Wolverhampton, WV1, 1SB, England
2. Concurrent Engineering Research Group, CSIM/DIA, ITESM Campus Monterr E. Garza Sada Sur 250, C.P. 64849, Monterrey, N.L. Mexico
3. Department of Computer Science and Information Systems, Chester College of Higher Education, Parkgate Road,CH1 4BJ, Chester, UK
4. Department of Design Management and Communications, DeMontfort University, Fletcher Building, The Gateway, Leicester, UK