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Acknowledgments
This book originates from my doctoral dissertation, and a derivative work of the dissertation has been published in the Journal of Communication. Work on this book would not have been possible without the help and support of the graduate faculty at The University of Texas at Austin and invaluable comments from many colleagues.
I am deeply thankful to my parents for their endless love and devotion, and also to my lovely wife, Hee-Jung, who has always been beside me and made my life rich and memorable.