1. Information Technology DivisionInstitute of Public Administration P.O.Box: 205 11141 Riyadh Saudi Arabia
2. School of Electrical Engineering and Computer Science, Science and Engineering FacultyQueensland University of Technology 2 George St 4001 Brisbane QLD Australia
3. School of Information Systems, Science and Engineering FacultyQueensland University of Technology 2 George St 4001 Brisbane QLD Australia