1. Division of Geomatics, University of Cape Town, Cape Town, South Africa
2. Department of Surveying and Geoinformatics, University of Lagos, Lagos, Nigeria
3. School of Engineering, Newcastle University, Newcastle upon Tyne, UK
4. Department of Geography, Geoinformatics and Meteorology, University of Pretoria, Pretoria, South Africa
5. Department of Civil Engineering and Geomatics, Cape Peninsula University of Technology, Cape Town, South Africa
6. Office of Global Innovation, UNICEF, New York, USA
7. Faculty of Civil Engineering and Transportation, University of Isfahan, Isfahan, Iran