AcknowledgementsThis thesis would not have been possible without the contributions off several To all of these people, I wish to express my First and foremost, I would like to acknowledge and extend my heartfelt gratitude to my supervisor—Associate Professor Zhang Yingbo, for her vital encouragement and patient guidance, generous assistance and invaluable advice, all of which have been of inestimable worth to the completion of my Secondly, my special thanks go to all people have helped and taught me immensely during the four years of my study in Changzhou Institute of T And I would also like to thank all the classmates and friends who have given me generous support and helpful advice during the past They have provided me great help and comprehensive supervision through the four I have benefited a great deal from their advice and The last but no least, my thanks would also go to my beloved parents and elder sister Amy for their boundless love and whole-hearted support over all these past
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