Özyeğin University, Çekmeköy Campus Nişantepe District, Orman Street, 34794 Çekmeköy - İSTANBUL

Phone : +90 (216) 564 90 00

Fax : +90 (216) 564 99 99

E-mail: info@ozyegin.edu.tr



Associate Professor

Research Areas
  • Service Operations
  • Healthcare Applications of Management Science
  • Appointment Scheduling
  • Simulation, Queuing Theory


The City University of New York (CUNY), The Graduate School and University Center, 2004
The City University of New York (CUNY), Baruch College, M.B.A., 2002
Boğaziçi University, Faculty of Economics and Administrative Sciences, Business Administration, 1992

  •  Çayırlı T. and K.K. Yang (Forthcoming 2019) Altering the Environment to Improve Appointment System Performance”, INFORMS Service Science.
  • Yang K.K. and T. Çayırlı (2019) “Managing Clinic Variability with Same-Day Scheduling, Intervention for No-Shows, and Seasonal Capacity Adjustments”, Journal of the Operational Research Society. Published online Feb22. https://doi.org/10.1080/01605682.2018.1557023
  • Çayırlı, T., Dursun, P. and E.D. Güneş (2018) “An Integrated Analysis of Capacity Allocation and Patient Scheduling in Presence of Seasonal Walk-ins” Flexible Services and Manufacturing Journalhttps://doi.org/10.1007/s10696-017-9304-8.
  • Yang, K.K., Çayırlı, T. and J.M.W. Low (2016). Predicting the Performance of Queues- A Data Analytic Approach. Computers and Operations Research, 76, 33-42.
  • Çayırlı, T. and K.K. Yang (2014) “A Universal Appointment Rule with Patient Classification for Service Times, No-Shows and Walk-ins”, Service Science, 6 (4), 274-295. 
  • Çayırlı, T. and E.D. Güneş (2014) “Outpatient Appointment Scheduling in Presence of Seasonal Walk-ins” Journal of the Operational Research Society, 65 (4), 512-531. 
  • Yang K.K., Low J.M.W. and T. Çayırlı (2014) “Modeling Queues with Simulation versus M/M/C Models,” Journal of Service Science Research, 6, 173–192. 
  • Çayırlı, T., Yang K.K. and S.A. Quek (2012) “A Universal Appointment Rule in the Presence of No-Shows and Walk-ins”, Production and Operations Management, 21 (4), 682–697.
  • Çayırlı, T., Veral, E. and H. Rosen (2008) “Assessment of Patient Classification in Appointment System Design”, Production and Operations Management, 17 (3), 338-353.
  • Çayırlı, T., Veral, E. and H. Rosen (2006) “Designing Appointment Scheduling Systems for Ambulatory Care Services”, Health Care Management Science, 9 (1), 47-58.
  • Çayırlı, T. and E. Veral (2003) "Outpatient Scheduling in Health Care: A Review of Literature", Production and Operations Management, 12 (4), 519-549. 


  • April 2010-October 2011. Scientific and Technological Research Council of Turkey (TUBITAK) grant 109K451 for 69,840 TRY (USD 44,400). Project Title: Appointment System Modeling in Presence of Seasonal Demand and Walk-ins in Outpatient Care.


Operations Management (OPER 202, OPM 502), Service Operations Management (OPER 314, MGMT 526, MGMT 824, OPM 907) Quality & Process Management (MGMT 727)