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ACKNOWLEDGMENTS
I’d like to first acknowledge my appreciation to my thesis supervisor Bipin C. Desai who
provided me with many useful directions and suggestions so that I can accomplish my
thesis smoothly. In particular, my thesis topic suggested by my supervisor gave me a
good opportunity to combine knowledge from various computer fields and provided a
reason for careful and in-depth study. I learned so much during the process of completing
my thesis and feel more confident of my future. Secondly, I am grateful to my parents
and twin sister who have given me consistent love and support especially when I
encountered difficulties. In addition, I would like to thank all the professors who are in
charge of examining my thesis. Their guidance and help has improved my thesis.
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