Add to ORKGTo the people who have supported me throughout my life iii ACKNOWLEDGEMENTS First and foremost, I would like to express my deepest appreciation to my advisors, Dr. Bradley Clymer and Dr. Arunark Kolipaka. Your support has led to the achievement of my first research thesis; without your encouragement, I could not have finished this thesis. Thank you once again for your patience and wisdom. I would also like to pay respect and many thanks to my parents for giving me the opportunity to come study in America. By having your full support and sacrifice, I have always learned how to cultivate myself for the better. I want to thank my brother and sister, respectively, Joohwan Cha and Soonyoung Cha. Since I was little, you always have had my back an...