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  • Cylindrically symmetric spacetimes with pure rediation 
    Delice, Özgür. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    In this thesis we have investigated some solutions of Einstein's field equations having cylindrical symmetry. The corresponding energy momentum tensor of most of these solutions has pure radiation equation of state. First, ...
  • Generation of 2D and 3D quasicrystalline structures using the projection method 
    Milas, Peker. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    Two algorithms for generating 2D and 3D quasiperiodic lattices by the strip projection method are presented. For the 2D algorithm a 5D simple cubic integral lattice with unit lattice constant is used as root lattice with ...
  • Nonlinear oscillations of proteins 
    Demir, Veysi. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    Slow modes of proteins exhibit nonlinear characteristics. Large deformations in proteins correspond to collective deformations. These are at relatively low energy compared to kBTroom where Troom is approximately 3000K. ...
  • Effects of humidity and various gases on the electrical conductivity of polyethylene glycol 
    Erdamar, Özgül. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    Characterization of the electrical properties of covalently linked pure, hydrogenated and hydrophobically modified poly{ethylene glycol} (PEG) thin films under a changing relative humidity is examined by dc measurements. ...
  • Machine learning algorithms in classification and diagnostic prediction of cancers using gene expression profiling 
    Altındal, Tuba. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    The performance of certain machine learning algorithms in classification and diagnostic prediction of small round blue cell tumors (SRBCTs) of childhood is investigated. Before classifying samples, including both tumor ...
  • Cellular automata modelling of multilane highway traffic 
    King, Hunter. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    Cellular automata (CA) are often used to model traffic flow with the intent to both better understand the internal dynamics of traffic from a statistical physics point of view, and to create virtual experiments which cannot ...
  • Possible evolutions of isolated neutron stars 
    Şahin, Serkan. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    Neutron stars are end products of stellar evolution, like black holes and white dwarfs. Since they radiate in all bands of the electromagnetic spectrum and as their densities and magnetic fields are much higher than normal ...
  • Path integrals in non-relativistic quantum mechanics 
    Düztaş, Koray. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    This thesis starts with a brief review of local and global approaches to classical mechanics. Path integral formalism, which constitutes a global approach to quantum mechanics, is introduced. A brief history of non-relativistic ...
  • Searching for solar axions in cast-cern solar telescope 
    Doğan, Özgen Berkol. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    In this work, a general overview of the CAST experiment is given, and solutions to the specific problems that arose during the preperation time for the Phase II is explained, as well as the steps that were taken to reach ...
  • Primordial and late-time inflation in Brans-Dicke cosmology 
    Çalık, Mehmet. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    The basic motivation of this work is to attempt to explain the rapid primordial inflation and the observed slow late-time inflation by using the Brans-Dicke theory of gravity. We show that the ratio of primordial and ...
  • Electro optical characterization of a silicon microsphere 
    Ayaz, Ulaş Kemal. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    In today’s world, with the development of optoelectronics, metal interconnections are no longer limiting factor for the performance of electronic systems. Replacing the metal interconnections by optical interconnections ...
  • Simulation of transient curret through polymethylmathacrylate thin films based on a charge density wave model 
    Şahin, Gökhan. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    A piecewise continuous, time dependent di®usive coupling in a classical onedimensional randomly pinned charge density wave model has been used for the analysisof experimentally observed transient current data for ...
  • Normal form approach to some chaotic sprott systems 
    İldeş, Medine. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    In this study, the normal form method which had been previously applied to three of the Sprott systems is applied to three other Sprott systems with a different eigenvalue structure of their linearized parts. It is seen ...
  • Terrain induced wind profiles 
    Bayraktar, Evren. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    In this study, the WOCSS meteorological model was used to produce threedimensional gridded wind fields. The results simulated by WOCSS were visualized in MATLAB environment. The WOCSS model was performed using a sample ...
  • Plastic fiber optic humidity and gas sensor 
    Açıkgöz, Sabriye. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    In this thesis, a simple and low cost plastic optical fiber (POF) sensor with a humidity sensing range from 13 % to 95 % relative humidity (RH) is described. The sensing mechanism of POF humidity sensor is based on the ...
  • Bound state solutions of the Schrödinger equation for potentials with dirac delta functions 
    Uncu, Haydar. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    A general method for the bound state solutions of the SchrÄodinger equation for analytically solvable potentials with any ¯nite number of Dirac delta functions is intro- duced for n-dimensional systems. Then, the potentials ...
  • Ground state properties of Frenkel-Kontorova models with scalloped potentials 
    Yolcu, Cem. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    In this thesis, the ground state con guration of the Frenkel-Kontorova model with a scalloped external potential is investigated. The method of e ective potentials of Gri ths and Chou is extended by a novel approach involving ...
  • Effects of gases on optical properties of polyethylene glycol 
    Bilen, Bükem. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    Humidity induced changes in the refractive index and thickness of polyethylene glycol (PEG) thin films are in situ determined by optical waveguide spectroscopy. PEG brushes are covalently attached to the surface of a thin ...
  • Black holes, cosmology and Brans-Dicke theories in 4+1 dimensional universe 
    Çiftci, Dilek. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    We consider the embedding of 3+1 dimensional cosmology in 4+1 dimensional Jordan-Brans-Dicke theory. We show that exponentially growing and power law scale factors are implied. We solve the Brans-Dicke equations and we ...
  • XMM-Newton data analysis of isolated radio-quiet neutron stars 1E 1207.4-5209, RX J0002+6246, RX J0822-4300, CXOU J185238.6+004020 
    Ankay, Arzu. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    In this thesis, data analysis of X-ray dim radio quiet X-ray pulsar 1E 1207.4- 5209 and RX J0002+6246, RX J0822-4300, CXOU J185238.6+00402 which have similar observational characteristics as 1E 1207.4-5209 are represented ...

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