1. Department of Systems and Information Engineering, University of Tsukuba, Tsukuba, Tennodai 1-1-1, Japan
2. School of Architecture, Building and Civil Engineering, Loughborough University, Epinal Way, Loughborough, LE11 3TU, UK
3. Department of Civil Engineering, University of Thessaly, Volos, 38221 Greece
4. Business School, University of Greenwich, (Old Royal Naval College, Park Row, London, UK