I would like to thank all the people at Curtin University who have made it possible for me to conduct my research work. I am also grateful to the Kingdom of Saudi Arabia government for their scholarship to undertake my high-degree studies.Many others have helped and inspired me during my studies outside of the university setting. Most importantly, I want to thank my wife, my kids and my family, who have given me their unfailing love and support throughout my life; this thesis would have been impossible without them. Special thanks go out to all the participants in this study, notably, the individuals that I interviewed. I appreciate the valuable knowledge that you have shared with me. Thank you for making it possible for me to make significant contributions to the field.Lastly, for those that I forget to mention, I offer my regards and blessings to all of you for showing your support to me, in one way or another, during my PhD studies.
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