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DEDICATION
This dissertation is dedicated to the following people:
- the memory of my mother, K. Visalakshy, who emphasized the importance of education and helped me with my
lessons throughout her life.
- my father, G. Purushothaman, who has been my role-model for hard work, persistence and
personal sacrifices, and who instilled in me the inspiration to set high
goals and the confidence to achieve them.
- my sisters--Dr. P. V. Divya, Devi Vysala and Anupriya Vysala--who have been my emotional anchors through not only the vagaries of graduate school, but my entire life.
- my husband, Josyula R. Rao, who has been proud and supportive of my
work and who has shared the many uncertainties, challenges and sacrifices for completing this
dissertation.
- my son, Ananth J. Josyula, who has grown into a wonderful 3 year old in spite of his
mother spending so much time away from him working on this dissertation.
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Darsana Josyula
2006-01-16