Recent Talks
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Tales of Time Scales,
Plenary lecture, 11th
INFORMS Applied Probability Society Conference,
New York, July 25, 2001.
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Economy of Scale in Multiserver Service Systems:
A Retrospective,
talk in
the Distinguished Lecture Series at
the Department of Industrial and Systems Engineering at
Lehigh University and at the Wharton School at the University of Pennsylvania,
October 2002.
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Experiencing Statistical Regularity,
talk in the Leaders in the Mathematical Sciences seminar series at
IBM, Yorktown Heights, NY, October 29, 2003.
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Resource Pooling and Staffing in Call Centers with Skill-Based Routing,
talk on joint work with Rodney B. Wallace at the CMU Workshop of Multiserver Scheduling (WORMS04),
April 18-19, 2004, in Pittsburgh, organized by Mor Harchol-Balter and Alan Scheller-Wolf.
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Approximations for Multi-Server Queues with Abandonments at the
Call Center Workshop, The Workshop on Stochastic Networks,
the University of Montreal, July 2004, organized by Raj Srinivasan, Avishai Mandelbaum and Noah Gans.
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A Staffing Algorithm for Call Centers with Skill-Based Routing,
talk on joint work with Rodney B. Wallace, NYU Stern School of Business, September 2004.
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Resource Pooling and Staffing in Call Centers with Skill-Based Routing,
talk on joint work with Rodney B. Wallace at the First Conference of the
Production and Operations Management Society (POMS) College of Service Operations,
December 3-4, 2004, at Columbia University, organized jointly by Columbia University Graduate School of Business, NYU Stern School of Business, University
of Pennsylvania Wharton School and Yale University School of Management.
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Fluid Approximations for Many-Server Queues with Abandonment and their Application,
Seminar at OR Center, MIT, November 3, 2005.
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Multi-Server Queues with Time-varying Arrival Rates,
Markov Lecture, INFORMS Applied Probability Society, INFORMS conference, Austin, TX, November 08, 2010.
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Queueing Models for Large-Scale Service Systems
Experiencing Periods of Overloading,
Seminar at MIT Operations Research Center, April 5, 2012
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Staffing to Stabilize Performance at Target Levels
in Many-Server Queues with Time-Varying Arrivals, Longer Service Times and Flexible Staffing,
Applied Probability and Risk Seminar, September 12, 2013.
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Fitting Queueing Models to Service System Data: What Arrival Process Model is Appropriate?,
seminar at University of Minnesota, September 16, 2015. (joint work with Song-Hee Kim).
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A Data-Driven Model for Appointment-Generated Arrival Process at an
Endocrinology Outpatient Clinic,
INFORMS, October 31, 2015. (joint work with Song-Hee Kim and Wan Chul Cha).
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A Robust Queueing Network Analyzer (RQNA) Based on the Index of Dispersion for Counts (IDC),
Operations Day, NYU, March 2, 2018. (joint work with Wei You).