<b>DECLARATION</b> <p>This dissertation is my own work and, to the best of my knowledge and belief, it contains: <ul> <li> no material previously published or written by another person, except where this is explicitly<br>defined in the acknowledgements;</li> <li>no material which to a substantial extent has been accepted for the qualification of any other<br>degree or diploma of a university or other institution of higher learning.</li> </ul> <b>Third Party Copyright Statement</b> <p>I have either used no substantial portions of third party copyright material, including charts,<br>diagrams, graphs, photographs or maps, in my thesis or I have obtained permission for such material<br>to be made accessible worldwide via the internet. If permission has not been obtained, I have<br>asked/will ask the Library to remove the third party copyright material from the digital copy.</p>