Abstract:I would like to thank my parents, without whose upbringing I would never have developed a brain that never ceases to ask "why?", and my brother both of whose love and care have always had a special meaning for me. I will always be indebted to Michael O'Boyle who taught me everything I know about research and without whose support and friendship this dissertation would not have been possible. I thank Lloyd Avant and Alice Thieman whose friendship and support made Ames a nice place to be for me and my family. La… Show more
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