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- J.K. Kim and H. Ayhan, Tandem Queues with Subexponential Service Times
and Finite Buffers,
*Queueing Systems*66, (2010), 195-209. - H. Ayhan and J.K. Kim, A General Class of Closed Fork and
Join Queues with Subexponential Service Times,
*Stochastic Models*, 23, (2007), 523--535 - H. Ayhan, Asymptotics of Closed Fork and Join Queues with Subexponential Service Times, [paper: paper ]
- H. Ayhan , Zbigniew Palmowski and Sabine Schelegel,
Cyclic Queueing Networks with Subexponential Service
Times ,
*Journal of Applied Probability*, 41, (2004), 791-801. - H. Ayhan and D-W. Seo, Tail Probability of
Transient and Stationary Waiting Times in (max,+)-Linear
Systems ,
*IEEE Trans. on Automatic Control*, 47-1, (2002), 151-157 , - H. Ayhan and D-W. Seo, Laplace Transform
and Moments of Waiting Times in (Max,+) Linear
Systems with Poisson Input,
*QUESTA.*, 37, (2001), 405-438. - H. Ayhan and F. Baccelli,Expansions
for Joint Laplace Transform of Stationary
Waiting Times in (Max,+) Linear Systems with
Poisson Input,
*QUESTA.*, 37, (2001), 291-328. , full paper: full (376 Kbytes) - A.F. de Kort, B. Heidergott and H. Ayhan,
A Probabilistic (max,+) Approach for Determining
Railway Infrastructure Capacity,
*EJOR*, 148, (2003), 644-661. - H. Ayhan and M.A. Wortman,
, Job Flow Control in Assembly Operations,
*IEEE Trans. on Automatic Control*, 44, (1999), 864-868. - H. Ayhan and M.A. Wortman,
, An Approximation for Computing the
Throughput of Closed Assembly-Type Queueing
Networks,
*EJOR*, 112, (1999), 107-121

- H. Ayhan and S. Schlegel, Expansion Formulae
for Characteristics of Cumulative Cost in Finite
Horizon Production Models,
*EJOR*, 132, (2001), 50-61.

The fourth, fifth and sixth papers in the above category also fit into this area of research.

- S. Andradottir
, H. Ayhan, and D. G. Down , Optimal Assignment of Servers to Tasks when Collaboration is Inefficient,
*under review*, [paper: paper ]. - H. Eser Kirkizlar, S. Andradottir
, and H. Ayhan, Service Quality versus Efficiency in Tandem Systems,
*under review*, [paper: paper ]. - H. Eser Kirkizlar, S. Andradottir
, and H. Ayhan, Flexible Servers in Tandem Lines with Setups,
*under revision*, [paper: paper ]. - Bo Zhang and H. Ayhan, Optimal Admission Control for Tandem
Queues with Loss,
*to appear, IEEE Transactions on Automatic Control*. - S. Andradottir
, H. Ayhan, and D. G. Down , Design Principles for Flexible Systems,
*under review*, [paper: paper ]. - H. Eser Kirkizlar, S. Andradottir
, and H. Ayhan, Flexible Servers in Understaffed Tandem Lines,
*to appear, POMS* - H. Eser Kirkizlar, S. Andradottir
, and H. Ayhan, Robustness of Effective Server Assignment
Policies to Service Time Distributions,
*Naval Research Logistics*, 57, (2010), 563-582. - S. Andradottir
, H. Ayhan, and D. G. Down , Queueing Systems with Synergistic Servers,
*Operations Research*, 59, (2011), 772--780. - S. Andradottir
, H. Ayhan, and D. G. Down , Maximizing
the Throughput of Tandem Lines with Flexible Failure-Prone Servers and
Finite Buffers,
*Probability in Engineering and Informational Sciences*, 22, (2008), 191--211 - S. Ziya
, H. Ayhan, and R. D. Foley ,
Optimal Pricing for Finite Capacity Queueing Systens with
Multiple Customer Classes,
*Naval Research Logistics*, 55, (2008), 412--418. - I. Maoui, H. Ayhan, and R. D. Foley ,
Congestion Dependent Pricing in a Stochastic Service System,
*Advances in Applied Probability*, 39, (2007), 898--921. - S. Andradottir
, H. Ayhan, and D. G. Down , Dynamic
Assignment of Dedicated and flexible Servers in tandem Lines,
*Probability in Engineering and Informational Sciences*, 21, (2007), 497--538 - I. Maoui, H. Ayhan, and R. D. Foley ,
Optimal Static Pricing for a Service Facility with Holding
Costs, to appear
*EJOR* - T. Aktaran-Kalayci, and H. Ayhan,
Sensitivity of Optimal Prices to System Parameters in a Service
Facility,
*EJOR*, 193, (2009), 120--128 - S. Ziya
, H. Ayhan, R. D. Foley, and E.
Pekoz , A Monotonicity Result for the Blocking Probability
in a G/GI/c/m Queueing System,
*Journal of Applied Probability*,43, (2006), 1201--1205. - S. Ziya
, H. Ayhan, and R. D. Foley
, Optimal Pricing for Finite Capacity Queueing Systems,
*OR Letters*34, (2006) 214-218. - S. Ziya
, H. Ayhan, and R. D. Foley ,
Relationships Among Three Assumptions in Revenue Management,
*Operations Research*52, (2004) 804-809. - S. Andradottir
, H. Ayhan, and D. G. Down , Compensating
for Failures with Flexible Servers,
*Operations Research*, 55, (2007), 753--768. - S. Andradottir
, and H. Ayhan , Throughput Maximization for Tandem
Lines with Two Stations and Flexible Servers,
*Operations Research*53, (2005) 516-531. - S. Andradottir
, H. Ayhan, and D. G. Down , Dynamic
Server Allocation for Queueing Networks
with Flexible Servers,
*Operations Research*51, (2003) 952-968 - S. Andradottir
, H. Ayhan, and D. G. Down , Server
Assignment Policies for Maximizing the
Steady-State Throghput of Finite Queueing Sytems,
*Management Science*47, (2001) 1421-1439 -
M. Lewis
, H. Ayhan, and R. D. Foley , Optimal
Admission Policies for a Multi-Class Nonstationary
Queueing System,
*Journal of Applied Probability.*39, (2002) 20-37. - M. Lewis
, H. Ayhan, and R.
D. Foley , Bias Optimality in a Queue
with Admission Control,
*Probability in the Engineering and Informational Sciences.*13, (1999), 309-327. - H. Arslan, H. Ayhan, and T.L. Olsen
,Analytic Models for When and How to Expedite
in Make-To-Order Systems,
*IIE Transactions*, 33 (2001) 1019-1029.

- J. Chang, H.
Ayhan, J.G. Dai
and Cathy H. Xia , Dynamic scheduling of a multiclass
fluid model with transient overload,
*QUESTA*48, (2004) 263-307 longer version . -
H. Ayhan and T.L. Olsen
, Scheduling of a Multi-Class Single Server Queue Under Non-Traditional
Performance Measures,
*Operations Research*, 48, (2000), 482-489. - H. Ayhan, J. Limon-Robles and M.A. Wortman,
,On the Time-Dependent Occupancy and
Backlog Distributions for the $GI/G/\infty$ Queue,
*Journal of Applied Probability*, 36, 1999, 558-569. - H. Ayhan, J. Limon-Robles and M.A. Wortman,
,An Approach for Computing Tight Numerical
Bounds on Renewal Functions,
*IEEE Trans. on Reliability*, 48, 1999, 182-188. - G-A.
Klutke, , M.A. Wortman,
and H. Ayhan, The Availability of Inspected
Systems Subjected to Random Deterioration,
*Probability in the Engineering and Informational Sciences.*, 10, 1996, 109-118. - M.A. Wortman,
,G-A.
Klutke, , and H. Ayhan, A Maintenance
Strategy for Systems Subjected to Deterioration
Governed by Random Shocks,
*IEEE Trans. on Reliability*, 43, (1994), 439-445.