Soondo Kweon, Southern Illinois University, Edwardsville; Jun H. Park, Tongmyong University; Kookhyun Kim, Tongmyong University; Kee Joo Kim, Tongmyong University; Jeonghoon Song, Tongmyong University; Hooi-Siang Kang, Universiti Teknologi Malaysia; H. Felix Lee, Southern Illinois University, Edwardsville