selected publications academic article Zheng, G., Nelson, P., Kee, E., Yilmaz, F., Zhang, Z., & Wortman, M. (2017). Whether a Theory of Nuclear Safety is deterministic or probabilistic? A metatheory. Annals of Nuclear Energy. 110, 979-988. Limon-Robles, J., & Wortman, M. A. (2009). ON THE TIME-DEPENDENT OCCUPANCY DISTRIBUTION OF THE G/G/1 QUEUING SYSTEM. Probability in the Engineering and Informational Sciences. 23(2), 261-280. Wortman, M. A., & Elkins, D. A. (2005). Stochastic modeling for computational warranty analysis. Naval Research Logistics. 52(3), 224-231. Klutke, G. A., Kiessler, P. C., & Wortman, M. A. (2004). A critical look at the bathtub curve (vol 52, pg 125, 2003). IEEE Transactions on Reliability. 53(3), 440-440. Elkins, D. A., & Wortman, M. A. (2004). An examination of correlation effects among warranty claims. IEEE Transactions on Reliability. 53(2), 200-204. Klutke, G. A., Kiessler, P. C., & Wortman, M. A. (2003). A critical look at the bathtub curve. IEEE Transactions on Reliability. 52(1), 125-129. Elkins, D. A., & Wortman, M. A. (2001). On Numerical Solution of the Markov Renewal Equation: Tight Upper and Lower Kernel Bounds. Methodology and Computing in Applied Probability. 3(3), 239-253. Ayhan, H., Limon-Robles, J., & Wortman, M. A. (1999). An approach for computing tight numerical bounds on renewal functions. IEEE Transactions on Reliability. 48(2), 182-188. Ayhan, H., Limon-Robles, J., & Wortman, M. A. (1999). On the time-dependent occupancy and backlog distributions for the GI/G/infinity queue. Journal of Applied Probability. 36(2), 558-569. Ayhan, H., & Wortman, M. A. (1999). Job flow control in assembly operations. IEEE Transactions on Automatic Control. 44(4), 864-868. Ayhan, H., Limon-Robles, J., & Wortman, M. A. (1999). On the time-dependent occupancy and backlog distributions for the GI/G/ queue. Journal of Applied Probability. 36(2), 558-569. Ayhan, H., & Wortman, M. A. (1999). An approximation for computing the throughput of closed assembly-type queueing networks. European Journal of Operational Research. 112(1), 107-121. Klutke, G. A., & Wortman, M. A. (1996). The backlog process in queues with random service speed. International Journal of Systems Science. 27(7), 641-645. Klutke, G. A., Wortman, M. A., & Ayhan, H. (1996). The availability of inspected systems subject to random deterioration. Probability in the Engineering and Informational Sciences. 10(1), 109-118. WORTMAN, M. A., & KLUTKE, G. A (1995). THE FAILURE-RATE OF SOFTWARE - DOES IT EXIST - COMMENTARY NUMBER-2. IEEE Transactions on Reliability. 44(3), 466-468. WORTMAN, M. A., & KLUTKE, G. A. (1994). ON MAINTAINED SYSTEMS OPERATING IN A RANDOM ENVIRONMENT. Journal of Applied Probability. 31(2), 589-594. Wortman, M. A., & Klutke, G. (1994). On maintained systems operating in a random environment. Journal of Applied Probability. 31(2), 589-594. WORTMAN, M. A., KLUTKE, G. A., & AYHAN, H. (1994). MAINTENANCE STRATEGY FOR SYSTEMS SUBJECTED TO DETERIORATION GOVERNED BY RANDOM SHOCKS. IEEE Transactions on Reliability. 43(3), 439-445. DAS, T. K., & WORTMAN, M. A. (1993). ASYMMETRIC PATROLLING REPAIRMAN SYSTEMS WITH GENERAL REPAIR TIME AND WALK TIME DISTRIBUTIONS - COST-ANALYSIS OF SERVICE SCHEDULE. IIE Transactions. 25(6), 19-26. DAS, T. K., & WORTMAN, M. A. (1993). PERFORMANCE EVALUATION OF N-UNIT PRIORITY STANDBY SYSTEMS. International Journal of Systems Science. 24(3), 553-562. DAS, T. K., & WORTMAN, M. A. (1993). ANALYSIS OF ASYMMETRIC PATROLLING REPAIRMAN SYSTEMS. European Journal of Operational Research. 64(1), 45-60. DAS, T. K., & WORTMAN, M. A. (1993). RELIABILITY OF MULTISTAGE PRODUCTION SYSTEMS CONTROLLED BY AUTOMATED VISUAL INSPECTION. IEEE Transactions on Reliability. 42(3), 362-368. DAS, T. K., & WORTMAN, M. A. (1992). PERFORMANCE OF N MACHINE CENTERS OF K-OUT-OF-M-G TYPE MAINTAINED BY A SINGLE REPAIRMAN. Naval Research Logistics. 39(7), 919-936. Kiessler, P. C., & Wortman, M. A. (1992). Workload in queues having priorities assigned according to service time. Queueing Systems. 10(4), 403-408. Das, T. K., & Wortman, M. A (1992). Performance of N machine centers of KoutofM: G type maintained by a single repairman. Naval Research Logistics. 39(7), 919-936. Wortman, M. A., Disney, R. L., & Kiessler, P. C. (1991). TheM/GI/1 Bernoulli feedback queue with vacations. Queueing Systems. 9(4), 353-363. WORTMAN, M. A., & DISNEY, R. L. (1990). VACATION QUEUES WITH MARKOV SCHEDULES. Advances in Applied Probability. 22(3), 730-748. Wortman, M. A., & Disney, R. L. (1990). Vacation queues with Markov schedules. Advances in Applied Probability. 22(3), 730-748. conference paper Kee, E., & Wortman, M. (2021). Nuclear Power: On PRA and Protective System Maintenance Wortman, M., Kee, E., & Kannan, P. (2021). The Role of Protective System Reliability Analysis in the Study of System Safety Sakurahara, T., Hoang, H. B., Pence, J., Cheng, W. C., Mohaghegh, Z., Kee, E., ... Johnson, D (2017). Protective systems: Possible extensions to the roverd method. 1362-1365. Bui, H., Sakurahara, T., Cheng, W. C., Crook, T., Vaghetto, R., Wortman, M., ... Moiseytseva, V. (2017). Protective systems: An application of regulatory guidance for ECCS sump performance. 693-702. RAMACHANDRAN, S., & WORTMAN, M. A (1992). 1ST AND 2ND MOMENTS OF BACKLOG FOR THE GI/GI/infinity QUEUEING SYSTEM. 443-447. institutional repository document Wortman, M., Kee, E., & Kannan, P. (2022). A Note on Probability Quantification for Protective System Efficacy Analysis: Stochastic Dynamics, Information Flow, and Initiating Event Arrival Times Wortman, M. A., Kee, E., & Kannan, P. (2021). Is Core Damage Frequency an Informative Risk Metric? Wortman, M., Kee, E., & Nelson, P. (2020). Characterizing the Probability Law on Time Until Core Damage With PRA Wortman, M., Kee, E., & Kannan, P. (2020). Safety-Critical Protective Systems and Margins of Safety
teaching activities ISEN310 Uncertainty Modeling For Ie Instructor ISEN453 Manufacturing Operations Instructor ISEN602 Appl Random Processes Instructor ISEN612 Design By Reliability Instructor ISEN627 Engr Anlys For Dec Mak Instructor ISEN667 Engineering Economy Instructor ISEN684 Professional Internship: In-ab Instructor ISEN691 Research Instructor ITDE691 Research Instructor
mailing address Texas A&M University Industrial Engineering 3131 TAMU College Station, TX 77843-3131 USA