License granted by Nwabisa Rasana (nwabisar@dut.ac.za) on 2009-07-10T10:28:47Z (GMT): NON-EXCLUSIVE DISTRIBUTION LICENSE In order for the Durban University of Technology institutional repository to reproduce, translate and or distribute your submission worldwide your agreement tothe following terms is necessary. By submitting this license, you (the author/s or copyright owner/s) grant/s to the Durban University of Technology the non-exclusive right to reproduce, translate (as defined below), and/or distribute your submission (including the abstract) worldwide in print and electronic format and in any medium, including but notlimited to audio or video. You agree that the Durban University of Technology may, without changing the content, translate the submission to any medium or format for the purpose of preservation. You also agree that the Durban University of Technology may keep more than one copy of this submission for purposes of security, back-up and preservation. You represent that the submission is your original work, and that you have the right to grant the rights contained in this license. You also represent that your submission does not, to the best of your knowledge, infringe upon anyone's copyright. If the submission contains material for which you do not hold copyright, you represent that you have obtained the unrestricted permission of the copyright owner to grant the Durban University of Technology the rights required by this license, and that such third-party owned material is clearly identified and acknowledged within the text or content of the submission. IF THE SUBMISSION IS BASED UPON WORK THAT HAS BEEN SPONSORED OR SUPPORTED