Name of Supervisor

First and foremost, I dedicate this dissertation to my mother Mrs Nolia Mwiinga Cheelo who taught me the art of African women hospitality starting from the time I was a child. Secondly, I dedicate it to my husband Davy and children for their support during the time of working on my dissertation. Declaration This dissertation, unless specifically indicated in the text is my original work. I therefore declare that I have not submitted this work to any other institute for examination apart from this university