An Analysis Study on Security Activity Changes by Security Accident. - Hyojik Lee; Onechul Na; Soyoung Sung; Hangbae Chang (ICEC, 2015)

A Case Study on ICT Collaboration Performance in Automobile Business. - Soyoung Sung; Onechul Na; Hyojik Lee; Hangbae Chang (ICEC, 2015)

A Study on Designing Public Safety Service for Internet of Things Environment. - Hyojik Lee; Onechul Na; Yang-Hoon Kim; Hangbae Chang (Wirel. Pers. Commun., 2017)

Design analysis and optimization of 6-DOF telemanipulator based on performance indices. - Seungnam Yu; Soonwoong Hwang; Jong Kwang Lee; Byung Suk Park; Hyojik Lee (Robotica, 2018)