Yavuz Gunalay

Bahcesehir University, Bahcesehir University Faculty of Economics and Administrative Sceinces, Faculty Member

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Researcher in stochastic models and urban logistics area with a keen interest in information technologies and systems. Working by the Bosphorus, and open for interdisciplinary cooperation invitations.

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Kjetil Haugen

Molde University College

David Seamon

Kansas State University

Armando Marques-Guedes

UNL - New University of Lisbon

Sandra (A.C.C.) van Wijk

American University of Sharjah

FHNW

University of Leeds

Ghent University

Stockholm University

Regional College of Management Autonomous

Florentin Smarandache

University of New Mexico

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Papers by Yavuz Gunalay

A Co—Evolutionary Simulation-Optimization Algorithm for Modelling to Generate Alternatives in Municipal Solid Waste Management Planning

Water Resources Planning Under Uncertainty Using Simulation Optimization

Generating Alternatives Using Simulation-Optimization Combined with Niching Operators to Address Unmodelled Objectives in a Waste Management Facility Expansion Planning Case

International Journal of Operations Research and Information Systems, 2013

Recent Advances in the Analysis of Polling Systems

Advances in Combinatorial Methods and Applications to Probability and Statistics, 1996

Abstract: This article summarizes some recent advances in the analysis of polling models in which... more Abstract: This article summarizes some recent advances in the analysis of polling models in which the server uses system-state information to affect its behavior. Literature dealing with a special class of such models in which the server lies dormant upon finding the system empty, and reactivates only when the system is populated by a critical number of customers, is closely examined. Rather than provide a broad review of literature, the focus of this article is on providing insights, on building bridges with earlier literature, and on identifying ...

Dimensioning shared-per-node recirculating fiber delay line buffers in an optical packet switch

Performance Evaluation, 2013

Optical buffering based on fiber delay lines (FDL) has been proposed as a means for contention re... more Optical buffering based on fiber delay lines (FDL) has been proposed as a means for contention resolution in an optical packet switch. In this article, we propose a queuing model for feedback-type shared-pernode recirculating FDL optical buffers in asynchronous optical switching nodes. In this model, optical packets are allowed to recirculate over FDLs as long as the total number of recirculations is less than a pre-determined limit to meet signal loss requirements. Markov Modulated Poisson Process (MMPP)-based overflow traffic models and fixed-point iterations are employed to provide an approximate analysis procedure to obtain blocking probabilities as a function of various buffer parameters in the system when the packet arrival process at the optical switch is Poisson. The proposed algorithm is numerically efficient and accurate especially in a certain regime identified with relatively long and variably-sized FDLs, making it possible to dimension optical buffers in next-generation optical packet switching systems.

Yavuz Gunalay

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