1. Institute of Sustainable Development and Architecture, Bond Univ., Gold Coast, Queensland, Australia (corresponding author).
2. Professor, Dept. of Construction Economics and Management, Faculty of Engineering and the Built Environment, Univ. of Cape Town, Private Bag X3, Rondebosch 7701, Cape Town, South Africa.
3. Vice Principal and Head of the Dubai Campus, Heriot-Watt Univ., Edinburgh, UK.