Improving Database System Performance by Applying NoSQL. - Yong-Lak Choi; Woo-Seong Jeon; Seok-Hwan Yoon (J. Inf. Process. Syst., 2014)

Proposal for Air-Baggage Tracing System Based on IoT. - Ye-Won Lee; Yong-Lak Choi (FGCN, 2015)