Stochastic Models / Queueing / Reliability / Optimization
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, published online at https://doi.org/10.1080/15326349.2018.1425886.
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.
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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