Journal paper (Overseas)
C.-S. Ok*, H.-S. Ahn, and S.-H. Park, PSO-Based Optimization of Shipping Box Configurations: An Empirical Study with South Korean Enterprise Data, Logistics, 10(3), 2026.
H.-S. Ahn, J.-J. Park, and C.-S. Ok*, H.-S. Ahn, and S.-H. Park, A SMP-Based Load Shifting Optimization Model for Voluntary Demand Response in Industrial Complexes, electricity, 7(2), 2026.
D.-H. Kim, and C.-S. Ok*, "A Study on the Characteristics of Real Estate Education in Korean Universities through Text Mining-based Curriculum Analysis, International Journal of Higher Education, 13(5), 2024.
H.-B. Jun, C.-S. Ok*, J.-H. Ha, J.-J. Park, J.-R. Oh, A Study on the Wind Power Forecasting Model Using Transfer Learning Approach, Electronics, 11(24), 2022.
H.-S. Seok, C.-S. Ok*, C. Chen, Wind power bidding strategy by harmonizing neural network and genetic algorithm, INTERNATIONAL JOURNAL OF GREEN ENERGY, 2022.
S.-H. Kim, C.-S. Ok*, H.-S. Seok, RTP-Based Residential Energy Consumption Scheduling Model with an Energy Storage System as an Independent Provider, JOURNAL OF ELECTRICAL ENGINEERING & TECHNOLOGY, 17(4), 2022.
K.-D. Kim, Robert W. Proctor, and C.-S. Ok*, "What customers want from smart devices: Investigating explicitly judged and implicitly derived success factors", Computers in Human Behavior, International Journal of Mobile Communications, Vol. 18, No. 2, 2020.
J.-H. Ha, Hong-Bae Jun, and C.-S. Ok*,, "A Mathematical Model for Supply Chain Reliability:Definition and Basic Structures", Computers and Industrial Engineering, Volume 120, pp 334-345, 2018.
S. Park, C.-S. Ok and J.-H. Ha*, "A Stochastic Simulation-based Holistic Evaluation Approach with DEA for Vendor Selection," Computers & Operations Research, Volume 100, pp 368-378, 2018.
J.-H. Ha, H.-S. Seok, and C.-S. Ok*, "Evaluation of Forecasting Methods in Aggregate Production Planning: A Cumulative Absolute Forecast Error (CAFE)", Computers and Industrial Engineering, vol.118, no.1, 2018.
J.-H. Ha, H.-B. Jun, and C.-S. Ok*, "Probabilistic evaluation approach for electrical connector mating: An empirical study on automotive electronic connectors", Journal of Advanced Mechanical Design, Systems, and Manufacturing, vol.11, no.5, 2017.
C.-S. Ok, S. Park and J. Park*, "Optimal Factory Operation Planning using Electrical Load Shifting under Time-Based Electric Rates,"Journal of Advanced Mechanical Design, Systems, and Manufacturing, vol. 10, No. 6, 2016.
K.-D. Kim, J.-H. Ha, and C.-S. Ok*, "Network Structure-Aware Ant-based Routing in Large-Scale Wireless Sensor Networks", International Journal of Distributed Sensor Networks, vol 2015, 2015.
C.-S. Ok, Soundar Kumara, and S.-C. Lee*, "Group Preference Modeling for Intelligent Shared Environments: Social Welfare beyond the sum," Information Sciences (IF=3.643), volume 278, 2014.
C.-S. Ok, and J. Park*, "A Conceptual Approach for Managing Production in Consideration of Shifting Electrical Loads," Robotics and Computer Integrated Manufacturing(IF=1.765), Volume 30, Issue 5, 2014.
B. Jeong and C.-S. Ok*, "A New Ranking method using DEA with super and cross efficiency," Asia-Pacific Journal of Operations Research, Vol. 30, No. 4, 2013.
C.-S. Ok, S. Lee*, P. Mitra, and S. Kumara, "Distributed Routing in Wireless Sensor Networks using Energy Welfare Metric," Information Sciences(IF=2.833), Vol.180, No.9, 2010.
J. Kim, C.-S. Ok, S. R. T. Kumara, and S.-T. Yee*, “Market-based approach for RFID-enabled dynamic deployment planning in automotive shipment yard,” International Journal of Production Economics(IJPE)(IF=1.988), vol 128, no.1, pp. 235-247, 2010.
C.-S. Ok, S. Lee*, and S. Kumara, "Distributed Energy Balanced Routing for Wireless Sensor Networks," Computers & Industrial Engineering(IF=1.543), Vol.57, No. 1, pp.125-135, 2009.
J. Kim and C.-S. Ok*, “Distributed Feedback Control Algorithm for Dynamic Truck Loading Scheduling Problem”, Applied Mathematics and Computation(IF=1.534), Vol.199, No. 1, pp.275-284, 2008.
Journal paper (Domestic)
K.-S. Kim, C.-S. Ok, and D.-K. Na, Structural Limitations of Korea’s Waste Clothing Recycling System and Optimization Strategies Based on a Circular Economy Framework, Society of Korea Industrial and Systems Engineering, Vol. 48, No. 4, 2025.
J.-H. Jo, Y.-T. Chung, S.-W. Choi, and C.-S. Ok*, "Unstructured Data Quantification Scheme Based on Text Mining for User Feedback Extraction", Society of Korea Industrial and Systems Engineering, Vol. 41, No. 4, 2018.
D.-I. Choi and C.-S. Ok*, "A New Metric for Evaluation of Forecasting Methods: Weighted Absolute and Cumulative Forecast Error", Society of Korea Industrial and Systems Engineering, Vol. 38, No. 3, 2015.
H.-Y. Kang and C.-S. Ok*, "An Advanced Collaborative Filtering-based Recommender System with Considering Item Relatedness", Entru, Special Issue, 2015.
I.-H. Kim and C.-S. Ok*, "Optimal Machine Operation Planning under Time-based Electricity Rates", Society of Korea Industrial and Systems Engineering, Vol. 37, No. 4, 2014.
K.-H. Son, Y.-H. Chun, and C.-S. Ok*,"A comparison of Estimation Approaches of Structural Equation Model with Higher-Order Factors Using Partial Least Squares", Society of Korea Industrial and System Engineering, Vol 34, No. 4, 2013.
C.-S. Ok, "Preference-based Clustering for Intelligent Shared Environments", Society of Korea Industrial and Systems Engineering, Vol. 36, No. 1, 2013.
J.H. Ko and C.-S. Ok*, "Advanced Distributed Arrival Time Control for Single Machine Problem in Dynamic Scheduling Environment", Journal of the Korean Institute of Industrial Engineers, Vol. 38, No. 1, March 2012.
C.-S. Ok, Y.-K. Lee, and C.-H. Ha*, "Utilization of Qualitative Data in DEA-Super-Efficiency Model for Chemical Industry, Entrue Journal of Information Technology, Vol. 11, No. 2, 2012.
C.-H. Ha, Y.-K. Lee, and C.-S. Ok*, "An Improvement On The Advanced Planning and Scheduling Using The Analytical Hierarchy Process", Korea Industrial and Systems Engineering, Vol.34, No. 3, pp.123-133, 2011.
C.-S. Ok, "Ant-based Routing in Wireless Sensor Networks", The Korean Operations Research and Management Science Society, Vol.35, No.2, 2010.
C.-S. Ok, "Mathematical Models for Maximal Lifetime and Energy Balanced Routing in Wireless Sensor Networks", Korea Management Engineers Society, Vol.15, No. 3, pp. 75-86, 2010.
C.-S. Ok, S. Lee, and B. Jeong, “Toward socially agreeable aggregate functions for group recommender systems,” The Korean Operations Research and Management Science Society, vol. 32, no. 4, 2007.
C.-S. Ok, S. Kim, and B. Yum, "Optimal Design of Mobile Cellular Communication Systems by Channel Power Control," The Journal of Korean Institute of Communication Sciences, Vol.21, No.12, pp.3154-3164, 1996.
Conference Proceedings
H.-Y. Kang, B.-H. Kim, and C.-S. Ok*, "A New Collaborative Filtering-based Recommender System for Manufacturing AppStore: Which Applications would be useful to your business?", FAIM 2013 [Slides].
Byungho Jeong and C.-S. Ok,"Ranking DMUs in the DEA context using super and cross efficiency," WKDD 2010.
C.-S. Ok, P. Mitra, S. Lee, and S. Kumara, "Maximum Energy Welfare Routing in Wireless Sensor Networks," Networking 2007, LNCS 4479, pp.203-214,2007. [Slides]
J. Kim, C.-S. Ok, S. Kumara, and S. Yee, "Multiagent-based Dynamic Deployment Planning in RTLS-enabled Automotive Shipment Yard," CCAI 2007, LNCS 4509, pp.38-49, 2007.
C.-S. Ok, P. Mitra, S. Lee, and S. Kumara, "Distributed Energy Adaptive Routing for Wireless Sensor Networks," CASE 2007. [Slides]
C.-S. Ok, H. Thadakamalla, U. Raghavan, and S. Kumara, "Optimal Transmission Power in Self-sustainable Sensor Networks for Pipeline Monitoring," CASE 2007. [Slides]