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Ingram School of Engineering
Integrated Modeling and Optimization for Service Systems (iMOSS) Lab

Publications

Book Chapters

  1. Pérez, E., (2023) “A Simulation-Based Online Data-Driven Control Framework for Large-Scale Wind Farm Systems Operation.” In Handbook on Dynamic Data Drive Application Systems (DDDAS) (Vol. II), Springer, Cham. DOI: 10.1007/978-3-031-27986-7_13.
  2. Pérez, E., M.M. Alvarado, and R. Fields, (2020) “Personalizing Healthcare in Smart Cities.” In Smart Cities in Application: Healthcare, Policy, and Innovation, Springer, Cham, pp. 3-18. DOI: 10.1007/978-3-030-19396-6_1.

Journal Articles [bold = Pérez’s student]

(Published or Accepted)

  1. Farzana, F. and Pérez, E., (2025) “Mixed Integer Programming Model for Planning Interventions to Care for Cardiovascular Patients after Natural Disaster” ”, SN Operations Research Forum – Accepted (IF: 0.75).
  2. Pérez, E., A. Joshi, S. Saha, and F.A. Méndez Mediavilla, (2025) “A Stochastic Programming Model for Trauma Hospital Network Expansion considering Rural Communities and COVID-19” Health Care Management Sciences - Accepted. (IF: 3.979).
  3. Joshi, A., E. Pérez, and F.A. Méndez Mediavilla, (2024) “An Empirical Analysis of Forecasting Methods for Trauma Injuries in Rural Areas – A Case Study” International Journal of Industrial and Systems Engineering, Vol.48, No.2, pp.278-300. DOI: 10.1504/ijise.2024.141597.
  4. Pérez, E., M. Sajan Varghese, and A.L. Schwarz, (2023) “A Decision Support System for Selecting Augmentative and Alternative Communication Devices” International Journal of Industrial and Systems Engineering, Vol.43, No.1, pp.59-79. DOI:
    10.1504/ijise.2023.128402.
  5. Marthak, Y.V., E. Pérez, and F.A. Méndez Mediavilla, (2023) “Analysis and Forecast of Donations at Domestic Hunger Relief Organizations Impacted by Natural Disasters” Socio-Economic Planning Sciences, Vol. 86. DOI: 10.1016/J.SEPS.2022.101470, WOSUID: WOS:000951699900001.
  6. Pérez, E. (2022) “An Appointment Planning Algorithm for Reducing Patient Waiting Times in Multispecialty Outpatient Clinics” SN Operations Research Forum,Vol.3, No.3, pp.52-72. DOI: 10.1007/s43069-022-00165-5.
  7. Pérez, E. (2022) “A Simulation-Driven Online Scheduling Algorithm for the Maintenance and Operation of Wind Farm Systems” SIMULATION Vol.98, No.1, pp.47-61. DOI: 10.1177/00375497211028605, WOSUID: WOS:000679273500001.
  8. Pérez, E., Y. Li, and J.A. Pagán (2021) “A Decision-Making Model to Optimize the Impact of Community-Based Programs” Preventive Medicine, Vol. 149. DOI: 10.1016/J.YPMED.2021.106619, WOSUID: WOS:000659230000008.
  9. Perez, E., Marthak, Y.V., and F.A. Méndez Mediavilla, (2021) “A Stochastic Programming Model for Tactical Product Prepositioning at Domestic Hunger Relief Organizations Impacted by Natural Hazards” Natural Hazards,Vol.107, pp.2263-2291. DOI: 10.1007/S11069-021-04639-3, WOSUID: WOS:000625732200003.
  10. Pérez, E. and D.P. Dzubay, (2021) “A Scheduling-Based Methodology for Improving Patient Perceptions of Quality of Care in Intensive Care Units” Health Care Management Sciences Vol.24, No.1, pp.203-215. DOI: 10.1007/S10729-021-09544-6, WOSUID: WOS:000611941400001.
  11. Pérez, E., V. Anandhan, and C. Novoa, (2020) “A Simulation Based Planning Methodology for Decreasing Patient Waiting Times in Pure Walk-in Clinics” International Journal of Information Systems in the Service Sector (IJISSS), Vol.12, No.3, pp.34-54. DOI: 10.4018/IJISSS.2020070103, WOSUID: WOS:000608246500003.
  12. Alvarado, M.M., T.G. Cotton, L. Ntaimo, and E. Pérez, (2018) “Modeling and Simulation of Oncology Clinic Operations in Discrete Event System Specifications” SIMULATION, Vol.94, No.2, pp.105-121. DOI: 10.1177/0037549717708246, WOSUID: WOS:000423327400002.
    • Article selected as Editor's choice paper for February 2018
  13. Pérez, E., R.R. Ambati, and A.J. Ruiz-Torres, (2018) “Maximizing the Number of On-Time Jobs on Paraller Servers with Sequence Dependent Deteriorating Processing Times and Periodic Maintenance”, International Journal of Operational Research, Vol.32, No.3, pp.267-289. DOI: 10.1504/ijor.2018.092735.
  14. Pérez, E., B. Uyan, *R.E. Rohde, *H. Wehbe-Janek, *A.K. Hochhalter, and *S.H. Fenton, (2017) “Assessing Catheter Associated Urinary Tract Infections Prevention Intervention in Intensive Care Units: A Discrete Event Simulation Study” IIE Transactions on Healthcare Systems Engineering, Vol.7, No.1, pp.43-52, 2017. DOI: 10.1080/19488300.2016.1265616.
    • Article featured by the Editor-in-Chief in the April Issue 2017 of IIE Magazine
  15. Pérez, E., B. Uyan, D.P. Dzubay, and *S.H. Fenton, (2017) “Catheter-Associated Urinary Tract Infections: Challenges and Opportunities for the Application of Systems Engineering”, Health Systems, Vol.6, No.1, pp.68-76, 2017. DOI:
    10.1057/S41306-016-0017-0, WOSUID: WOS:000403898600006.
  16. Ruiz-Torres, A.J., G. Paletta, and E. Pérez, (2015) “Maximizing the Percentage of On-Time Jobs with Sequence Dependent Deteriorating Processing Times”, Int. J. of Operations Research and Information Systems (IJORIS), Vol. 6, No. 3, pp. 1-18, 2015. DOI: 10.4018/ijoris.2015070101.
  17. Ruiz-Torres, A.J., N. Alomoto, G. Paletta, and E. Pérez, (2015) “Scheduling to Maximize Worker Satisfaction and On-Time Orders”, International Journal of Production Research (IJPR), Vol. 53, No. 9, pp. 2836-2852. DOI: 10.1080/00207543.2015.1005764, WOSUID: WOS:000350451200017.
  18. Pérez, E., Y. Ding and L. Ntaimo, (2015) “Multi-Component Wind Turbine Modeling and Simulation for Wind Farm Operations and Maintenance”, SIMULATION, Vol. 9, No. 4 pp. 360-382, 2015. DOI: 10.1177/0037549715572490, WOSUID: WOS:000353448600005.
  19. Ruiz-Torres, A.J., G. Paletta, and E. Pérez, (2013) “Parallel Machine Scheduling to Minimize the Makespan with Sequence Dependent Deteriorating Effects”, Computers & Operations Research, Vol. 40, No. 8, pp. 2051-2061.DOI: 10.1016/J.COR.2013.02.018, WOSUID: WOS:000319491300013.
  20. Pérez, E., L. Ntaimo, C. O. Malavé, *C. Bailey and *P. McCormack, (2013) “Stochastic Online Appointment Scheduling of Multi-Step Medical Procedures in Nuclear Medicine”, Health Care Management Sciences, Vol. 16, No. 4, pp. 281-299. DOI: 10.1007/S10729-013-9224-4, WOSUID: WOS:000326691800001.
  21. Gallego, J.A., Y.M. Ko, R.J. Polansky, E. Pérez, L. Ntaimo, and N. Gautam, (2013) “Integrating Virtualization, Voltage Scaling and Powering On/Off Servers in Data Centers for Energy Efficiency”, IIE Transactions, Vol. 45, pp.1114-1136. DOI: 10.1080/0740817X.2012.762484, WOSUID: WOS:000320914500006.
    • Article featured by the Editor-in-Chief in the September Issue 2013 of IIE Magazine
  22. Pérez, E., L. Ntaimo, W.E. Wilhelm, *C. Bailey and *P. McCormack, (2011) “Patient and Resource Scheduling of Multi-Step Medical Procedures in Nuclear Medicine”, IIE Transactions on Healthcare Systems Engineering, Vol.1, No.3, pp.168-184. DOI: 10.1080/19488300.2011.617718.
  23. Byon, E., E. Pérez, Y. Ding and L. Ntaimo, (2011) “Simulation of Wind Farm Maintenance Operations using DEVS”, SIMULATION, Vol.87, No.12, pp.1091-1115. DOI: 10.1177/0037549711376841, WOSUID: WOS:000298963500007.
  24. Pérez, E., L. Ntaimo, *C. Bailey and *P. McCormack, (2010) “Modeling and Simulation of Nuclear Medicine Patient Service Management in DEVS”, SIMULATION, Vol.86, No.8-9, pp.481-501. DOI: 10.1177/0037549709358294, WOSUID: WOS:000280765600003.

(Submitted / In-Revision / In-Preparation)

  1. Pérez, E., D. Zertuche, D. Martinez, and J. Sefair, “A Simulation based Optimization Workforce Allocation Method to Improve Airport Security Screening Operations”, under second revision.
  2. Pérez, E., S.K. Greer, M. Van, K.S. Skidmore, K. Williams, and F.A. Méndez Mediavilla, “Masking Mandate Policies and Community-Level Factors Associated with COVID-19 Cases Spread in the State of Texas” under second revision.
  3. Pérez, E., *C.M. Johnson, *Y. Li, and *J.A. Pagán, “Optimizing access to fruits and vegetables in rural communities: A decision-making model for the placement of produce markets” under second revision.
  4. Cravy, L. and E. Pérez, “A Synergistic Approach to Workforce Optimization in Airport Screening using Machine Learning and Discrete-Event Simulation” submitted.
  5. Iqbal Farabi, Y. and E. Pérez, “The Vehicle Routing Problem with Multiple Driver Allocation for Nonprofit Organizations” in-preparation.

Conference Proceedings [bold = Pérez’s student]

  1. Cravy, L. and E. Pérez, (2025) “Combining Machine Learning and Discrete-Event Simulation for Optimized Workforce Planning in Airport Screening Facilities”, Proceedings of the IISE Conference 2025, Atlanta, May 31 to June 3.
  2. Young, J.J., E.M. Catron, B. Haupt and E. Pérez, (2025) “Improving Operational Efficiency for Meals on Wheels Central Texas: A Process Optimization Initiative”, Proceedings of the IISE Conference 2025, Atlanta, May 31 to June 3.
  3. Iqbal Farabi, Y. and E. Pérez, (2025) “Optimizing Last-Mile Delivery for Nonprofits: A Deterministic VRPTW Model with Multi-Driver Allocation”, Proceedings of the IISE Conference 2025, Atlanta, May 31 to June 3.
  4. Farzana, F. and E. Pérez (2024) “An Agent-based Model to Assess Interventions for Continuous Care of Cardiovascular Diseases after Natural Disasters” Proceedings of the 2024 Winter Simulation Conference, Dec.14-18. DOI: 10.1109/wsc63780.2024.10838772.
  5. Zertuche, D., D. Martinez, and E. Pérez, (2024) “A Simulation Based Metaheuristic for Workforce Allocation in Airport Screening Facilities”, Proceedings of the IISE Conference 2024, Montreal, May 18-21.
  6. Zertuche, D., D. Martinez, and E. Pérez, (2023) “A Simulation Based Strategy for Dynamic Workforce Allocation and Checkpoint Configuration in Airport Screening Facilities”, Proceedings of the IISE Conference 2023, New Orleans LA, May 20-23.
  7. Saha, S., A. Sharotry, F. A. Mendez Mediavilla, J. Jimenez and E. Pérez, (2023) "Productivity and reliability of people with disability: A literature review", Proceedings of the IISE Conference 2023, New Orleans LA, May 20-23.
  8. Kothamasu, M., E. Pérez, and F.A. Méndez Mediavilla, (2022) “Modeling and Simulation of Food Bank Disaster Relief Operations” Proceedings of the 2022 Winter Simulation Conference, Singapore, Dec.11-14. DOI: 10.1109/WSC57314.2022.10015480, WOSUID: WOS:000991872901051.
  9. Streber, H., Streber, K., Van, M., Jimenez-Rivera, A., and E. Pérez, (2022) “Planning the Trauma Hospital Network Expansion to Increase Access in Rural Communities” Proceedings of the IISE Conference 2022, Seattle WA, May 20-23.
  10. Pérez, E., L. Taunton, and J.A. Sefair, (2021) “A Simulation-Optimization Approach to Improve the Allocation of Airport Security Screening Resources in Airport Terminal Checkpoints”, Proceedings of the 2021 Winter Simulation Conference, Dec.13-17, pp.1-11. DOI: 10.1109/wsc52266.2021.9715421.
  11.  Kothamasu, M., E. Pérez, and F.A. Méndez Mediavilla, (2021) “A Stochastic Programming Model for Food Bank Disaster Relief Operations considering Transportation Capacity Limitations” Proceedings of the IISE Conference 2021, virtual, May 22-25.
  12. Sajan Varghese, M., E. Pérez, and *A.L. Schwarz, (2019), “A Systems Engineering Approach to Designing a Mobile Assessment Clinic for Patients in Need of Assistive Technology”, Proceedings of the IISE Conference 2019, Orlando, FL, May 18-21.
  13. Sajan Varghese, M., E. Pérez, and *A.L. Schwarz, (2019), “A Decision Support Framework for Augmentative and Alternative Communication Device Selection”, Proceedings of the IISE Conference 2019, Orlando, FL, May 18-21.
  14. E. Pérez, (2017) “Integrating Mathematical Optimization in DEVS for Nuclear Medicine Patient and Resource Scheduling”, Proceedings of the 2017 Winter Simulation Conference, Las Vegas, NV, December 3-6. DOI: 10.1109/WSC.2017.8247802, WOSUID: WOS:000427768600028.
    • Article nominated for best conference paper
  15. Reese, H., V. Anandhan, E. Pérez, and C. Novoa, (2017) “Improving Patient Waiting Time at a Pure Walk-In Clinic”, Proceedings of the 2017 Winter Simulation Conference, Las Vegas, NV, December 3-6. DOI: 10.1109/WSC.2017.8248001, WOSUID: WOS:000427768602084.
  16. Dzubay, D.P. and E. Pérez, (2016), “The Impact of System Factors on Patient Perceptions of Quality of Care”, Proceedings of the 2016 Winter Simulation Conference, Washington, DC, December 11-14. DOI: 10.1109/WSC.2016.7822259, WOSUID: WOS:000399152502047.
  17. Walker, D., E. Shanks, D. Montoya, C. Weiman, E. Pérez, and *L. DePagter, (2015), “Towards a Simulation based Methodology for Scheduling Patient and Providers at Outpatient Clinics”, Proceedings of the 2015 Winter Simulation Conference, Huntington Beach, CA, December 6-9. DOI: 10.1109/WSC.2015.7408273, WOSUID: WOS:000399133901039.
  18. Sowle, T., N. Gardini, F. Vazquez Arroyo Vazquez, E. Pérez, J.J. Jimenez, and *L. DePagter, (2014), “A Simulation-IP based tool for Patient Admission Services in a Multi-Specialty Outpatient Clinic”, Proceedings of the 2014 Winter Simulation Conference, Sabannah, GA, December 7-10. DOI: 10.1109/WSC.2014.7019976, WOSUID: WOS:000389248201042.
  19. Huggins, A., D. Claudio, and E. Pérez, (2014), “Improving Resource Utilization in a Cancer Clinic: An Optimization Model”, Proceedings of the ISERC Conference 2014, Montreal, May 31-Jun 3.
  20. Mocarzel, B., B. Uyan, D. Shelton, E. Pérez, J.J. Jimenez, and *L. DePagter, (2013), “Modeling and Simulation of Patient Admission Services in a Multi-Specialty Outpatient Clinic”, Proceedings of the 2013 Winter Simulation Conference, Washington, DC, December 8-11. DOI: 10.1109/WSC.2013.6721606, WOSUID: WOS:000349838402055.
  21. Barry, J., J. Medellin, J. Piechota, M. Harris, T. Jin, and E. Pérez, (2013), “Power Quality and Reliability-Based Optimization for Distributed Renewable Energy Systems”, Proceeding of the ISERC Conference 2013, San Juan, PR, May 18-22.
  22. Pérez, E., L. Ntaimo, and Y. Ding, (2013), “Simulation of Wind Farm Operations and Maintenance”, Proceedings of the ASME Turbo Expo 2013, San Antonio, TX, June 3-7. DOI: 10.1115/GT2013-94300, WOSUID: WOS:000361920000021.
  23. Pérez, E., L. Ntaimo, E. Byon, and Y. Ding, (2010), “A Stochastic DEVS Wind Turbine Component Model for Wind Farm Simulation”, Symposium on Theory of Modeling and Simulation - DEVS Integrative M&S Symposium (DEVS 2010), Orlando, FL, April 12-15. DOI: 10.1145/1878537.1878681.