A distributed speed scaling and load balancing algorithm for energy efficient data centers. - Young Myoung Ko; Yongkyu Cho (Perform. Evaluation, 2014)

Energy efficiency of data center operating practices: Server clustering, powering on/off, and bang-bang control. - Yongkyu Cho; Young Myoung Ko (Networks, 2018)

Stabilizing the virtual response time in single-server processor sharing queues with slowly time-varying arrival rates. - Yongkyu Cho; Young Myoung Ko (Ann. Oper. Res., 2020)

Power- and QoS-Aware Job Assignment With Dynamic Speed Scaling for Cloud Data Center Computing. - Yongkyu Cho; Young Myoung Ko (IEEE Access, 2022)

Reliability Improvement of Circular k-Out-of-N: G Balanced Systems Through Center of Gravity. - Yongkyu Cho; Seung Min Baik; Young Myoung Ko (IEEE Access, 2023)

Lifetime Analysis of Circular k-out-of-n: G Balanced Systems in a Shock Environment. - Seung Min Baik; Yongkyu Cho (CoRR, 2025)