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The research reported in this thesis, except where otherwise indicated, is my original research.  This thesis has not been submitted for any degree or examination at any other university.  This thesis does not contain other person's data, pictures, graphs or other information unless specifically acknowledged as being sourced from other persons.  This thesis does not contain other person's writing unless specifically acknowledged as being a sourced from other researchers. Where other written sources have been quoted, then: (a) their words have been rewritten , but the general information attributed to them has been referenced. (b) Where their exact words have been used, then their writing has been placed in italics and inside quotation marks and referenced.  This thesis does not contain text, graphics or tables copied and pasted from the internet, unless specifically acknowledged, and the source being detailed in the thesis and in the Reference sections.

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