Developing Inverted Simulated Annealing Algorithm and Solving Timetabling Problem. - MyoungJae Kim; SangHak Lee; Tae-Choong Chung (IC-AI, 1999)

Data Aggregation for Wireless Sensor Networks Using Self-organizing Map. - SangHak Lee; Tae-Choong Chung (AIS, 2004)

Distance-Based Energy Efficient Clustering for Wireless Sensor Networks. - SangHak Lee; Junejae Yoo; Tae-Choong Chung (LCN, 2004)

System Architecture for Context-Aware Home Application. - SangHak Lee; Tae-Choong Chung (WSTFEUS, 2004)

Energy-Efficient Clustering Algorithm in Wireless Sensor Networks. - DaeHwan Kim; SangHak Lee; We-Duke Cho (EUC, 2006)

The method to secure scalability and high density in cloud data-center. - YoungJin Choi; SangHak Lee; JinHwan Kim; YongJu Kim; HyeonGyu Pak; GyuYoung Moon; JongHei Ra; Yong-Gyu Jung (Inf. Syst., 2015)