Refereed Journal Publications

Simulation Methodology

• Variance Reduction through Smoothing and Control Variates for Markov Chain Simulations (with Daniel P. Heyman and Teunis J. Ott). ACM Transactions on Modeling and Computer Simulation, special issue on Variance Reduction, 1993 (volume 3), 167-189.
• A Stochastic Approximation Algorithm with Varying Bounds. Operations Research, 1995 (volume 43), 1037-1048.
• A Method for Discrete Stochastic Optimization. Management Science, 1995 (volume 41), 1946-1961.
• Accelerated Regeneration for Markov Chain Simulations (with James M. Calvin and Peter W. Glynn). Probability in the Engineering and Informational Sciences, 1995 (volume 9), 497-523.
• On the Choice of Alternative Measures in Importance Sampling with Markov Chains (with Daniel P. Heyman and Teunis J. Ott). Operations Research, 1995 (volume 43), 509-519.
• Time-Segmentation Parallel Simulation of Networks of Queues with Loss or Communication Blocking (with Teunis J. Ott). ACM Transactions on Modeling and Computer Simulation, 1995 (volume 5), 269-305.
• A Scaled Stochastic Approximation Algorithm. Management Science, 1996 (volume 42), 475-498.
• A Global Search Method for Discrete Stochastic Optimization. SIAM Journal on Optimization, 1996 (volume 6), 513-530.
• Optimization of the Transient and Steady-State Behavior of Discrete Event Systems. Management Science, 1996 (volume 42), 717-737.
• Potentially Unlimited Variance Reduction in Importance Sampling of Markov Chains (with Daniel P. Heyman and Teunis J. Ott). Advances in Applied Probability, 1996 (volume 28), 166-188.
• A Simulated Annealing Algorithm with Constant Temperature for Discrete Stochastic Optimization (with Mahmoud H. Alrefaei). Management Science, 1999 (volume 45), 748-764.
• Accelerating the Convergence of Random Search Methods for Discrete Stochastic Optimization. ACM Transactions on Modeling and Computer Simulation, 1999 (volume 9), 349-380.
• Applying Bayesian Ideas in Simulation (with Vicki M. Bier). Simulation Practice and Theory, 2000, 253-280.
• A Modification of the Stochastic Ruler Method for Discrete Stochastic Optimization (with Mahmoud H. Alrefaei). European Journal of Operational Research, 2001 (volume 133), 160-182.
• Simulation Optimization: Integrating Research and Practice. Invited commentary on the feature article titled ``Optimization for Simulation: Theory vs. Practice'' by Michael C. Fu. INFORMS Journal on Computing, 2002, 216-219.
• Efficiency of Time Segmentation Parallel Simulation of Finite Markovian Queueing Networks (with Mehdi Hosseini-Nasab). Operations Research, 2003 (volume 51), 272-280.
• Parallel Simulation of Transfer Lines by Time Segmentation (with Mehdi Hosseini-Nasab). European Journal of Operational Research, 2004 (volume 159), 449-469.
• Discrete Stochastic Optimization Using Variants of the Stochastic Ruler Method (with Mahmoud H. Alrefaei). Naval Research Logistics, 2005 (volume 52), 344-360.
• Replicated Batch Means for Steady-State Simulations (with Nilay Tanik Argon). Naval Research Logistics, 2006 (volume 53), 508-524.
• Replicated Batch Means Variance Estimators in the Presence of an Initial Transient (with Christos Alexopoulos, Nilay Tanik Argon, and David Goldsman). ACM Transactions on Modeling and Computer Simulation, 2006 (volume 16), 317-328.
• Simulation Optimization with Countably Infinite Feasible Regions: Efficiency and Convergence. ACM Transactions on Modeling and Computer Simulation, 2006 (volume 16), 357-374.
• Balanced Explorative and Exploitative Search with Estimation for Simulation Optimization (with Andrei A. Prudius). INFORMS Journal on Computing, 2009 (volume 21), 193-208.
• Fully Sequential Procedures for Comparing Constrained Systems via Simulation (with Seong-Hee Kim). Naval Research Logistics, 2010 (volume 57, issue 5), 403-421. Winner of the 2013 Harold W. Kuhn award.
• Adaptive Random Search for Continuous Simulation Optimization (with Andrei A. Prudius). Naval Research Logistics, 2010 (volume 57, issue 6), 583-604. Winner of the 2011 Harold W. Kuhn award.
• An Averaging Framework for Simulation Optimization with Applications to Simulated Annealing (with Andrei A. Prudius). Naval Research Logistics, 2012 (volume 59, issue 6), 411-429.
• Steady-state Simulation with Replication-dependent Initial Transients: Analysis and Examples (with Nilay Tanik Argon, Christos Alexopoulos, and David Goldsman). INFORMS Journal on Computing, 2013 (volume 25, issue 1), 177-191.
• Efficient Comparison of Constrained Systems Using Dormancy (with Christopher M. Healey and Seong-Hee Kim). European Journal of Operational Research, 2013 (volume 224, issue 2), 340-352.
• Variance Estimation and Sequential Stopping in Steady-State Simulations using Linear Regression (with Vivek Gupta and David Goldsman). ACM Transactions on Modeling and Computer Simulation, 2014 (volume 24, issue 2), Article 7.
• Selection Procedures for Simulations with Multiple Constraints under Independent and Correlated Sampling (with Christopher M. Healey and Seong-Hee Kim). ACM Transactions on Modeling and Computer Simulation, 2014 (volume 24, issue 3), Article 14.
• A Minimal Switching Procedure for Constrained Ranking and Selection under Independent or Common Random Numbers (with Christopher M. Healey and Seong-Hee Kim). Submitted for publication.
• Adaptive Random Search with Discarding for Continuous Simulation-based Optimization (with Liujia Hu). Submitted for publication.
• Computing Bayesian Means Using Simulation (with Peter W. Glynn). Submitted for publication.
• Simulation Cloning with Induced Negative Correlation (with Judy S. Lee and Richard M. Fujimoto). Submitted for publication.

Stochastics and Flexibility

• Server Assignment Policies for Maximizing the Steady-State Throughput of Finite Queueing Systems (with Hayriye Ayhan and Douglas G. Down). Management Science, 2001 (volume 47), 1421-1439.
• Dynamic Server Allocation for Queueing Networks with Flexible Servers (with Hayriye Ayhan and Douglas G. Down). Operations Research, 2003 (volume 51, issue 6), 952-968.
• Throughput Maximization for Tandem Lines with Two Stations and Flexible Servers (with Hayriye Ayhan). Operations Research, 2005 (volume 53), 516-531.
• Partial Pooling in Tandem Lines with Cooperation and Blocking (with Nilay Tanik Argon). Queueing Systems, 2006 (volume 52, issue 1), 5-30.
• Compensating for Failures with Flexible Servers (with Hayriye Ayhan and Douglas G. Down). Operations Research, 2007 (volume 55), 753-768.
• Dynamic Assignment of Dedicated and Flexible Servers in Tandem Lines (with Hayriye Ayhan and Douglas G. Down). Probability in the Engineering and Informational Sciences, 2007 (volume 21), 497-538.
• Maximizing the Throughput of Tandem Lines with Flexible Failure-Prone Servers and Finite Buffers (with Hayriye Ayhan and Douglas G. Down). Probability in the Engineering and Informational Sciences, 2008 (volume 22), 191-211.
• Robustness of Effective Server Assignment Policies to Service Time Distributions (with H. Eser Kirkizlar and Hayriye Ayhan). Naval Research Logistics, 2010 (volume 57, issue 6), 563-582.
• Queueing Systems with Synergistic Servers (with Hayriye Ayhan and Douglas G. Down). Operations Research, 2011 (volume 59, issue 3), 772-780.
• Dynamic Server Allocation for Unstable Queueing Networks with Flexible Servers (with Salih Tekin and Douglas G. Down). Queueing Systems, 2012 (volume 70, issue 1), 45-79.
• Flexible Servers in Tandem Lines with Setups (with Hayriye Ayhan and H. Eser Kirkizlar). Queueing Systems, 2012 (volume 70, issue 2), 165-186.
• Flexible Servers in Understaffed Tandem Lines (with H. Eser Kirkizlar and Hayriye Ayhan). Production and Operations Management, 2012 (volume 21, issue 4), 761-777.
• Design Principles for Flexible Systems (with Hayriye Ayhan and Douglas G. Down). Production and Operations Management, 2013 (volume 22, issue 5), 1144-1156.
• Optimal Assignment of Servers to Tasks when Collaboration is Inefficient (with Hayriye Ayhan and Douglas G. Down). Queueing Systems, 2013 (volume 75, issue 1), 79-110.
• Profit Maximization in Flexible Serial Queueing Networks (with H. Eser Kirkizlar and Hayriye Ayhan). Queueing Systems, 2014 (volume 77, issue 4), 427-464.
• Dynamic Server Assignment with Task-Dependent Server Synergy (with Xinchang Wang and Hayriye Ayhan). Accepted for Publication in IEEE Transactions on Automatic Control.
• Resource Pooling in the Presence of Failures: Efficiency versus Risk (with Hayriye Ayhan and Douglas G. Down). Submitted for publication.
• Optimal Control of Queueing Systems with Non-collaborating Servers (with Tugce Isik and Hayriye Ayhan). Submitted for publication.

Other

• Choosing the Number of Conditioning Events in Judgemental Forecasting (with Vicki M. Bier). Journal of Forecasting, 1997 (volume 16), 255-286.
• An Analysis of Decomposition for Subjective Estimation in Decision Analysis (with Vicki M. Bier). IEEE Transactions on Systems, Man, and Cybernetics, Part A, 1998 (volume 28), 443-453.
• Perwez Shahabuddin, 1962--2005: A Professional Appreciation (with Paul Glasserman, Peter W. Glynn, Philip Heidelberger, and Sandeep Juneja). ACM Transactions on Modeling and Computer Simulation, special issue honoring Perwez Shahabuddin, 2007 (volume 17, issue 2), Article 6.
• Reactive Strategies for Containing Developing Outbreaks of Pandemic Influenza (with Wenchi Chiu, David M. Goldsman, Mi Lim Lee, Kwok-Leung Tsui, Beate Sander, David N. Fisman, and Azhar Nizam). BMC Public Health, special issue on Influenza Modeling, 2011 (volume 11, issue 1, article S1, 25 February 2011).
• Inspection Location in Capacity-Constrained Lines (with Salih Tekin). Submitted for publication.
• Simulation of Influenza Propagation: Model Development, Parameter Estimation, and Mitigation Strategies (with Wenchi Chiu, David M. Goldsman, and Mi Lim Lee). IIE Transactions on Healthcare Systems Engineering, 2014 (volume 4, issue 1), 27--48.