Declaration
I certify that except where due acknowledgement has been made, this research is that of the
author alone; the content of this research submission is the result of work which has been
carried out since the official commencement date of the approved research program; any
editorial work, paid or unpaid, carried out by a third party is acknowledged; and, ethics
procedures and guidelines have been followed.
In addition, I certify that this submission contains no material previously submitted
for award of any qualification at any other university or institution, unless approved for a
joint-award with another institution, and acknowledge that no part of this work will, in the
future, be used in a submission in my name, for any other qualification in any university or
other tertiary institution without the prior approval of the University, and where applicable,
any partner institution responsible for the joint-award of this degree.
I acknowledge that copyright of any published works contained within this thesis re-
sides with the copyright holder(s) of those works.
I give permission for the digital version of my research submission to be made available
on the web, via the University’s digital research repository, unless permission has been
granted by the University to restrict access for a period of time
I acknowledge the support I have received for my research through the provision of an
Australian Government Research Training Program Scholarship.
Shanaka Ranmal Jayasekara
02 March 2022
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