Browsing Fen Bilimleri Enstitüsü by Title

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  • On simple modules over the section burnside functor 
    Balçık, Irmak. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    Biset functors provides a uni ed approach to module theoretic operations on representations of nite groups. It is well-known that biset functors can be considered as modules over the Green biset functor of the Burnside ...
  • On special solutions of Zakharov-Schulman equations 
    Bilman, Deniz. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    In this work, two types of special solutions for Zakharov–Schulman equations are studied. Existence of standing wave solutions are established by utilizing variational methods. First set conditions on the operators for the ...
  • On static spherically symmetric solutions of Einstein's equations with two perfect fluids as source 
    Uzun, Nebiye Merve. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2013., 2013.)
    We first point out that in the context of static spherically symmetric solutions of Einstein's Equations, the "radially imperfect fluids" introduced recently are equivalent to superpositions of noninteracting normal and ...
  • On the classical solutions of field theoretical models 
    Kalaycı, Jan. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1984., 1984.)
  • On the cosmological impact of a quantized scalar field 
    Algan, Merve Tarman. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2015., 2016.)
    We explicitly compute the leading order contribution to the stress-energy- momentum tensor of a scalar eld, which propagates in a Friedmann-Robertson-Walker (FRW) universe and placed in the in nite adiabatic vacuum. Since ...
  • On the evolutionary coupling and its measurement 
    Kırbaş, Serkan. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    Evolutionary Coupling (EC) is the implicit relationship between the artifacts or parts of the software system that are frequently changed together during evolution of a system. Understanding the EC in software systems is ...
  • On the geometric objects of same type as christoffel symbols of Ehresmann Ë-connections 
    Abadoğlu, Ender. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1995., 1995.)
    In this thesis the higher order Ehresmann a-connections are studied as geometric objects. We prove that, any two Lie subgroups of the rth order jet group G~ which are isomorphic to G~ are conjugate. It follows from this ...
  • On the history of expansion and matter - energy content of the universe 
    Çamlıbel, Ali Kazım. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    The aim of this dissertation is to explore the vast phenomenological area between the cosmological observations and the theoretical approaches. We are speci cally focusing on type Ia supernova data and what they tell us ...
  • On the hypersurfaces in toric varieties 
    Barış, İlayda. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2022., 2022)
    Theory of toric varieties provides fruitful interactions between algebraic geom etry and combinatorics. It is remarkably fertile in terms of connections with many areas of mathematics and has plentiful applications to other ...
  • On the integrability of the generalized Davey-Stewartson system 
    Çolak, İlker Evrim. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    A method developed by V. E. Zakharov and E. I. Shul'man for understanding the integrable cases of a given system of di erential equations having some certain Hamiltonian structure is represented. Then an application of ...
  • On the large c expansion of general relativity 
    Ergen, Mert. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    This paper will start with the classical description of gravity. It will next explain the mathematical tools that will be used to carry classical gravity to a geometrical frame. After demonstrating the covariant formulation ...
  • On the radial monotonicity of the ensemble average propagator 
    Bodur, Erkam. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    The ensemble average propagator (EAP) is the di usion propagator averaged over a volume of porous medium. This mathematical tool contains substantial amount of information concerning the geometry of the underlying structure. ...
  • On the role of diagonalization in Gödel's incompleteness and Tarski's theorems 
    Budak, Mehmet. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    Three major theorems of arithmetics from early 1930s delineate the enterprise of formalization in mathematics: Gödel's First Incompleteness Theorem, Diagonalization Lemma and Tarski's Theorem. We begin the thesis with a ...
  • On unidirectional cyclic layouts, Hamiltonian circuits, capacitated vehicle routes and minimal spanning trees 
    Öncan, Temel. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2004., 2004.)
    This thesis consists of four major parts. The first part is on the Unidirectional Cyclic Layout Problem (UCLP). First, new efficient heuristics for the UCLP are proposed based on the ideas originally proposed for two ...
  • One dimensional compression ignition engine simulation and comparison of soot emission models 
    Asma, Alpay. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2015., 2015.)
    In this thesis 2.2 liter compression-ignition (CI) engine having 4-cylinders with a turbocharger is modeled through AVL BOOST under both full-load and 80%, 60%, and 40% partial loads. The study carried out can be classified ...
  • Online due date assignment in dynamic and stochastic scheduling environments with family setups under tardiness and quoted lead time considerations 
    Düzgit, Zehra. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2015., 2015.)
    In this study, due date assignment problem is addressed in a single machine dynamic and stochastic environment with family setups. A due date is to be assigned for each new job immediately at the time of its arrival. While ...
  • Ontology-based entity tagging and normalization in the biomedical domain 
    Karadeniz Erol, Zeynep İlknur. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    One of the challenges for scientists in the biomedical domain is the huge amount and the rapid growth of information buried in the text of electronic resources. Developing text mining methods to automatically extract ...
  • Open platform for attack and countermeasure analysis on system security 
    Bal, Özgün. (Thesis (M.A.) - Bogazici University. Institute for Graduate Studies in the Social Sciences, 2018., 2018.)
    Attack detection and prevention is an essential subject in contemporary security practices. Like early detection of attacks, fast decision that includes optimum option is also an important issue. Selection of right prevention ...
  • 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 ...

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