International Journals

Stochastic Models / Queueing / Reliability / Optimization

J20. Pan, Q., Byon, E.*, Ko, Y. M. and Lam, H. (2020), "Adaptive Importance Sampling for Extreme Quantile Estimation with Stochastic Black Box Computer Models," Naval Research Logistics, to appear.

J19. Pan, Q., Ko, Y. M. and Byon, E.* (2020), "Uncertainty Quantification for Extreme Quantile Estimation with Stochastic Computer Models," IEEE Transactions on Reliability, published online (DOI:10.1109/TR.2020.2980448 ).

J18. Barde, S., Ko, Y. M. and Shin, H.* (2020), "Fitting Discrete Phase-type Distribution from Censored and Truncated Observations with Pre-specified Hazard Sequence," Operations Research Letters, 48(3), 233-239 (DOI:10.1016/j.orl.2020.02.009).

J17. Endharta, A. J. and Ko, Y. M.* (2020), "Economic Design and Maintenance of a Circular k-out-of-n: G Balanced System with Load-Sharing Units," IEEE Transactions on Reliability, published online (DOI: 10.1109/TR.2020.2969236).

J16. Cho, Y. and Ko, Y. M.* (2020), "Stabilizing the virtual response time in single-server processor sharing queues with slowly time-varying arrival rates," Annals of Operations Research, published online (DOI: 10.1007/s10479-019-03511-9 ), preprint available (arxiv).

J15. Oh, C. H., Kim, M. H., Kim, B.-I. and Ko, Y. M.* (2019), "An Efficient Building Evacuation Algorithm in Congested Networks," IEEE Access, 7(1), 169480-169494.

J14. Ki, Y., Kim, B.-I.*, Ko, Y. M., Jeong, H., and Koo, J. (2018), "Charging Scheduling Problem of an M-to-N Electric Vehicle Charger," Applied Mathematical Modelling, 64, 603-614.

J13. Endharta, A. J., Yun, W. Y., and Ko, Y. M.* (2018), "Reliability Evaluation of Circular k-out-of-n: G Balanced Systems through Minimal Path Sets," Reliability Engineering & System Safety, 180, 226-236.

J12. Ko, Y. M. and Pender, J.* (2018), "Strong approximations for time-varying infinite-server queues with non-renewal arrival and service processes," Stochastic Models, 34(2), 186-206.

J11. Cho, Y. and Ko, Y. M.* (2018), "Energy Efficiency of Data Center Operating Practices: Server Clustering, Powering On/Off, and Bang-Bang Control," Networks, 71(2), 107-119.

J10. Pender, J. and Ko, Y. M.* (2017), "Approximations for the Queue Length Distributions of Time-Varying Many-Server Queues," INFORMS Journal on Computing, 29(4), 688-704.

J9. Ko, Y. M. and Pender, J.* (2017), "Diffusion Limits for the (MAPt/PHt/∞)N Queueing Network," Operations Research Letters, 45(3), 248-253.

J8. Ko, Y. M. and Byon, E.* (2017), "Condition-based joint maintenance optimization for a large-scale system with homogeneous units," IISE Transactions (on Quality and Reliability Engineering), 49(5), 493-504.

J7. Ko, Y. M.* (2015), "A simple analysis of the transient period in peer-to-peer networks," IEEE Communications Letters, 19(9), 1528-1531.

J6. Ko, Y. M. and Byon, E.* (2015), "Reliability evaluation of large-scale systems with identical units," IEEE Transactions on Reliability, 64(1), 420-434.

J5. Ko, Y. M.* and Cho, Y. (2014), "A distributed speed scaling and load balancing algorithm for energy efficient data centers," Performance Evaluation, 79, 120-133 (Special issue for IFIP Performance 2014).

J4. Gallego, J., Ko, Y. M., Polansky, R., Perez, E., Ntaimo, L., and Gautam, N.* (2013), "Integrating virtualization, voltage scaling and powering on/off servers in data centers for energy efficiency," IIE Transactions (on Operations Engineering and Analytics), 45(10), 1114-1136 (featured in the September issue 2013 of Industrial Engineer by Editor-in-Chief of IIE Transactions).

J3. Ko, Y. M. and Gautam, N.* (2013), "Critically loaded time-varying multiserver queues: computational challenges and approximations," INFORMS Journal on Computing, 25(2), 285-301.

J2. Ko, Y. M. and Gautam, N.* (2010), "Transient analysis of queues for peer-based multimedia content delivery," IIE Transactions (on Operations Engineering and Analytics), 42(12), 881-896 (featured in the November issue 2010 of Industrial Engineer by Editor-in-Chief of IIE Transactions).

J1. Ko, Y. M. and Gautam, N.* (2010), "Epidemic-based information dissemination in wireless mobile sensor networks," IEEE/ACM Transactions on Networking, 18(6), 1738-1751.

Medical Applications

A7. Sun, H. Y., Ko, Y. M., Lee, S. W., Lee, B.* and Kim, J. H.* (2018), "The application rate for urology specialty compared with other specialties from 2007 to 2014 in Korea: is it influenced by social interest manifested by internet trends?," BMC Urology, 18, 65.

A6. Kim, J. H.*, Sun, H. Y., Kim, H. J., Ko, Y. M., Chun, D.-I. and Park, J. Y.* (2017), "Does uneven geographic distribution of urologists affect bladder and prostate cancers mortality? National health insurance data in Korea from 2007 to 2011," Oncotarget, 8(39), 65292-65301.

A5. Kim, H. J., Sun, H. Y., Choi, H., Park, J. Y., Bae, J. H., Doo, S. H., Yang, W. J., Song, Y. S., Ko, Y. M. and Kim, J. H.* (2017), "Efficacy and Safety of Initial Combination Treatment of an Alpha Blocker with an Anticholinergic Medication in Benign Prostatic Hyperplasia Patients with Lower Urinary Tract Symptoms: Updated Meta-Analysis," PLoS ONE, 12(1), e0169248.

A4. Shim, S. R., Kanhai, K., Ko, Y. M., and Kim, J. H.* (2017), "Efficacy and safety of prostatic arterial embolization: Systematic review with meta-analysis and meta-regression," The Journal of Urology, 197(2), 465-479.

A3. Song, Y. S., Shim, S. R., Jung, I., Sun, H. Y., Song, S. H., Kwon, S. S., Ko, Y. M., and Kim, J. H.* (2015), "Geographic Distribution of Urologists in Korea, 2007 to 2012," Journal of Korean Medical Science, 30(11), 1638-1645.

A2. Kim, J. H., Shim, S. R., Doo, S. W., Yang, W. J., Yoo, B. W., Kim, J. M., Ko, Y. M., Song, E. S., Lim, I. S., Lee, H. J.*, and Song, Y. S.* (2015), "Bladder recovery by stem cell based cell therapy in the bladder dysfunction induced by spinal cord injury: Systematic review and meta-analysis," PLoS ONE, 10(3), e0113491.

A1. Kim, J. H, Kwon, S.-S., Shim, S. R., Sun, H. Y., Ko, Y. M., Chun, D.-I, Yang, W. J., and Song, Y. S.* (2014), "Validation and Reliability of a Smartphone Application for the International Prostate Symptom Score Questionnaire: A Randomized Repeated Measures Crossover Study," Journal of Medical Internet Research, 16(2), e38.

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Authors in bold are our lab members.