License granted by Emma Proudley (epro008@ec.auckland.ac.nz) on 2007-11-14T02:29:01Z (GMT): The University of Auckland Library Consent for Digital Theses. The digital copy of this thesis is protected by the Copyright Act 1994 (New Zealand). This thesis may be consulted, for the purposes of research or private study provided that due acknowledgement is made where appropriate and that the author's permission is obtained before any material from the thesis is published. By accepting and submitting this license, I, the author, grant to The University of Auckland the non-exclusive rights to distribute the digital copy of my thesis on the University's digital repository. I certify that the digital copy of my thesis deposited with the University will be the same as the final officially approved version of my thesis. Except in the circumstances set out below, no emendation of content has occurred and I recognise that minor variations in formatting may occur as a result of the conversion to digital format. EITHER I confirm that my thesis does not contain material for which the copyright belongs to a third party. OR I confirm that for all third party copyright material in my thesis I have either: a) obtained written permission to use the material and submit copies of each permission. or b) removed the material from the digital copy of the thesis; fully referenced the deleted material, and, where possible, provided links to electronic sources of the material.