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Browsing M.S. Theses by Author "Güllü, Refik."

Browsing M.S. Theses by Author "Güllü, Refik."

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  • A deterministic demand inventory model with advance supply information 
    Küçük, Bilge (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    In this study we consider a periodic review, single-item inventory model under non-stationary supply availability with advance supply availability information. We have a dynamic deterministic demand and the objective is ...
  • Admission and termination control of a two class loss system 
    Ulukuş, Mehmet Yasin. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    In this thesis, we consider admission and termination control policies in a Markovian loss system with two classes of jobs. A class is characterized by the arrival and service rates, in addition to a fixed reward and ...
  • An application of demand forecasting and fare management for an airline company 
    Özbay, Fırat. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2015., 2015.)
    In this thesis, we aim to propose a model for estimating demand and obtaining ticket fare that maximizes revenue, based on real market data. In this context, eight different single leg local market routes are examined, and ...
  • An application of integrated staffing and shift optimization for a call center 
    Ertaban, Cihangir. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    Inbound call center problems need decisions in four main areas; the number of incoming calls, necessary number of agents to handle these calls, shift starting times for the operations and the number of agents to be allocated ...
  • An application of inventory pooling / distribution models in glass industry 
    Ertürk, Can. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    Supply chain is a concept in which industrial engineering applications are very important in decision making processes by requiring systematic perspective, scientific approach and correct methodology. Supply chain concept ...
  • Analysis of a supply chain under advance demand information 
    Eş, Emine. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    In this study we investigate the effects of incorporating advance demand information in a two-echelon distribution model which consists of a central depot and several retailers. The depot is not allowed to hold inventory. ...
  • Analysis of a supply chain with forecast evolution and supply disruption 
    Erbilgin, Hilmi. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    In this thesis, we analyze two supply chain models. In the first model, we develop a centralized supply chain consisting one warehouse and two retailers. The aim of this model is to find the total optimal order quantity ...
  • Analysis of inventory policies under estimation of demand parameters 
    Bozkaya, İrem Cansu. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2022., 2022)
    The aim of this thesis is to analyze the estimation performance for different characteristics of data in different supply chain systems. In this study, we analyze two different systems. The first section of this thesis ...
  • Analysis of single and two-echelon inventory systems under disruptions in supply 
    Tomsuk, Damla. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    In this thesis, we analyze two different models. In the first model, we consider a two-echelon supply chain with a supplier, a manufacturer and two retailers. The manufacturer is subject to non-stationary supply disruptions. ...
  • Assessing benefits of direct shipment in a deterministic supply chain 
    Meriç, Ebru. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    Today's manufacturing establishments have to improve their operations such as logistics, distribution and inventory. Integration of production-distribution systems and scheduling are widely used in manufacturing applications ...
  • Effect of a price driven secondary market on a system with random demand and uncertain costs 
    Gürel, yücel. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    In this thesis, we consider the problem of purchasing a commodity with a uctuating market price so as to maximize its pro t from selling it over two selling season. Over the primary season, the market price evolution is ...
  • Implementation of the Heath-Jarrow-Morton model on the Turkish Government zero-coupon bonds 
    Köken, Ali Tolga. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2013., 2013.)
    The term structure of interest rates explains the relationship among interest rates on default-free securities that vary in their time to maturity. The evolution of the term structure of interest rates through time reflects ...
  • Leasing and remanufacturing strategies with pricing and inventory control 
    Demirok, Nurcan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    We consider infinite horizon inventory policies for a company which satisfies customer demand by either selling or leasing a product. If the product is leased, it can be leased for a different number of periods. The customer ...
  • Modeling and analysis of a kit management problem 
    Kızılcık, Güler. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    In this study, we consider a multi-item inventory system in which customers may order different but possibly overlapping kits. Customer demand for a kit follows a Poisson process where there is a fixed probability for each ...
  • Modeling price and demand interaction in inventory systems 
    İşlier, Bekir Turgut. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2013., 2013.)
    In this thesis, we examine the impact of price on demand in inventory systems with one and two suppliers. We present two models. In the first model, price determines the probability of demand occurrence. In case demand ...
  • Modelling effects of correlation in price competition 
    Yıldız, Engin. (Thesis (M.A.) - Bogazici University. Institute for Graduate Studies in the Social Sciences, 2018., 2018.)
    Firms try to sell their products or services with a predetermined scheme to earn the most profit possible. For this, they first should know the demand characteristics of their product or service. Commonly, the market structure ...
  • Multiple queues with simultaneous arrivals 
    Emre, Toygar. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2022., 2022)
    Queuing theory problems have been the topic of deep research owing to the fact that so many difficulties are in existence and their significance in real life cases can not be ignored. Those problems can be observed in ...
  • Operating room scheduling with sequence - dependent & stochastic surgery durations 
    Karataş, Tuğçe. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    Operating rooms are the most costly part of hospitals. In order to increase their efficiencies, hospitals should first increase the efficiency of their operating rooms. In this thesis, we consider the next-day operating room ...
  • Operating room scheduling with uncertain surgery durations 
    Khaniyev, Taghi. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    In this thesis, we consider the day-to-day scheduling problem of a single hospital operating room (OR). We assume that the number and the characteristics of the surgeries to be scheduled for the next day are known in ...
  • Optimal commodity procurement with imperfect delivery 
    Çetin, Elif. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    For a number of commodity markets, including many agricultural and energy products, a typical problem faced by decision makers is to determine the optimal spot and forward contracting quantities when both the product demand ...

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