Filtering by: Committee Cheung, Shun, Emory University Remove constraint Committee: Cheung, Shun, Emory University Committee Qin, Zhaohui, Emory University Remove constraint Committee: Qin, Zhaohui, Emory University Year 2014 Remove constraint Year: 2014 School Laney Graduate School Remove constraint School: Laney Graduate School Submission Type Dissertation Remove constraint Submission Type: Dissertation