Browsing Ph.D. Theses by Title

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  • Competitive learning with additional information for solving multi-facility weber problem 
    Özkısacık, Kerem Can. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    It is possible to remark that the mathematical formulation of clustering analysis problem is similar to a certain class of location problems. Known as the multi{facility Weber problem, it is a non{convex continuous ...
  • Controlled sink mobility and wireless sensor network lifetime maximization 
    Keskin, M. Emre. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    The design of a Wireless sensor network (WSN) involves the optimal deployment and activity scheduling of the sensors as well as optimal deployment or routing of sinks and optimal routing of data flows. In this thesis, we ...
  • Cournot equilibrium with free entry for capitalistic and workers' enterprises 
    Pinhas, David. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1985., 1985.)
    The purpose of this dissertation is to determine the Cournot Equilibrium with Free Entry for Capitalistic and Workers' Enterprises. An alternative Cournot-like free entry notion to Novshek's CEFE which we call Cournot-Sertel ...
  • Coverage, sink location and routing problems in wireless sensor networks 
    Güney, Evren. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    Recent advances in electronics and telecommunications have enabled the development of low-cost, low-power multifunctional sensor devices that are powered by batteries and communicating through wireless channels over small ...
  • Data-driven local search heuristics for bilevel network design problems 
    Sevim, İsmail. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2022., 2022)
    In the Network Design Problem (NDP), one aims to design the configuration of a network by installing links between a set of given nodes and determine the flow of a set of commodities over these installed links. In this ...
  • Decentralized decomposition methods for block angular linear and integer progamming problems 
    Aydın, M. Aslı. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    In this thesis, we propose Decentralized Benders decomposition and Decentralized Dantzig-Wolfe decomposition for block angular linear programs and Decentralized LShaped Method for block angular integer programs. We exploit ...
  • Design and analysis of communication systems with high error correction capability through optimization 
    Kabakulak, Banu. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    Channel coding is the term used for the collection of techniques that are employed in order to minimize errors which occur during the transmission of digital information from one place to another. Low–density parity–check ...
  • Design and development of a large scale energy model 
    Karali, Nihan. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)
    Interest on the sustainability of energy systems has recently increased with the emerging need to mitigate global warming in a global environment experiencing continuous increases in energy demand. Global warming is mainly ...
  • Disaster mitigation and humanitarian relief logistics 
    Döyen, Alper. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)
    In this thesis we are interested in two distinct problems within the disaster management context. These problems are modeled by two-stage stochastic integer programming since stochasticity is inherent in natural disasters. ...
  • Distance-based learning approaches for multiple instance learning 
    Sivrikaya, Özgür Emre. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2022., 2022)
    Multiple Instance Learning (MIL) is a weakly supervised approach that focuses on the labeling of a set of instances (i.e. bags) where the label information of in dividual instances is generally unknown. Many of the earlier ...
  • Efficient simulations in finance 
    Sak, Halis. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    Measuring the risk of a credit portfolio is a challenge for financial institutions because of the regulations brought by the Basel Committee. In recent years lots of models and state-of-the-art methods, which utilize Monte ...
  • Efficient stratified sampling for financial risk simulation 
    Başoğlu, İsmail. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    Monte Carlo simulation is frequently the only method available for computing nancial risk, particularly under the realistic and complex portfolio models. The naive simulation generally leads to large con dence intervals ...
  • Empirical assessment and model selection in option pricing 
    Orbay, Berk. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    The majority of empirical option pricing studies consider the distance from the market option prices as the performance metric. Though, this kind of assessment is limited to the objectives of proper hedging of options and ...
  • Energy economy and environment integrated large scale modeling and analysis of the Turkish energy system 
    Işık, Mine. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    Need for energy is constantly increasing as globalization spreads, and is becoming a very important input for economic development. As energy resources are scarce, safe and sustainable supply of energy, efficient use, ...
  • Evolutionary approaches to many-objective combinatorial optimization problems 
    Şahinkoç, Hayrullah Mert. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)
    Many-objective evolutionary approaches try to characterize and overcome the challenges posed by the large number of objectives and have been shown to be very e ective for achieving good Pareto approximations. Despite the ...
  • Graphs of edge-intersecting non-splitting paths 
    Boyacı, Arman. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2015., 2015.)
    In this work, we introduce and study a new graph class: namely the graphs of Edge-Intersecting Non-Splitting Paths (ENP). First, we consider a special case where the host graph is a tree: the graphs of Edge-Intersecting ...
  • Implicit algebraic curves and surfaces for shape modeling and recognition 
    Çivi, Hakan. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Sciences and Engineering, 1997., 1997.)
    Implicit algebraic 2D curves and 3D surfaces are among the most powerful shape representations. With this approach, objects in 2D images are described by their silhouettes (em surfaces in 3D) and then represented by 2D ...
  • Inventory policies for an assemble-to-order system with joint discount incentives 
    Tombuş, Önder. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    We consider an assemble-to-order system to meet all of the stationary stochastic demand of a finished product in a periodic review setting. The finished product is assembled using two subassemblies (components). The demand ...
  • Inventory policies under advance capacity information 
    Çınar, Esra. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    One of the most important challenges the inventory managers face is the uncertainty on both sides of the demand and supply. Exchange of information on both demand and capacity processes can decrease the uncertainty and it ...
  • Joint inventory and pricing decisions: reference effects and delay sensitive customers 
    Güler, Mehmet Güray. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)
    We consider joint inventory and pricing problem of a single product with stochastic demand in two different contexts. In the first one, we study a periodic review problem where the demand of the product is subject to ...

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