License granted by Annette Oelofsen (aoelof@sun.ac.za) on 2006-11-01T05:49:36Z (GMT): THESIS DISTRIBUTION LICENSE for STELLENBOSCH UNIVERSITY By signing and submitting this license, you (the author(s) or copyright owner) grants to Stellenbosch University (SUN) 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 not limited to audio or video. 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. You agree that SUN may, without changing the content, translate the submission to any medium or format for the purpose of preservation. You also agree that SUN may keep more than one copy of this submission for purposes of security, back-up and preservation. 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 SUN 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 BY AN AGENCY OR ORGANIZATION OTHER THAN SUN, YOU REPRESENT THAT YOU HAVE FULFILLED ANY RIGHT OF REVIEW OR OTHER OBLIGATIONS REQUIRED BY SUCH CONTRACT OR AGREEMENT. SUN will clearly identify your name(s) as the author(s) or owner(s) of the submission, and will not make any alteration, other than as allowed by this license, to your submission.