Fen Bilimleri Enstitüsü: Recent submissions

  • Design and construction of A 1 MeV cyclotron 
    Şimşek, Ebru. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    This thesis studies the design and construction of Turkey’s first 1 MeV cyclotron. The iron yoke, electromagnets and vacuum chamber, which are its main components, have been constructed. Electrically insulated electromagnets ...
  • Design and construction of a prototype resistive plate chamber 
    Yıldızcı, Zaynab Shahadad. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    Resistive Plate Chambers (RPCs) are gaseous particle detectors that are used in various applications requiring coverage of large volumes with good time and position resolution, such as detection of muons in high-energy ...
  • RF power and signal transmission in particle accelerators 
    Sunar, Ezgi. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    RF waves have key applications for particle accelerators in transmitting both sig nal and power. In this thesis, we summarize work covering both of these complementary functions of the RF waves, applied to two separate ...
  • Klein tunneling in α- (BEDT-TTF) 2I3 organic compound 
    Nizam, Ümmü Seleme. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    The term Klein tunnelling refers to the counterintuitive phenomenon in which an incoming particle can perfectly transmit through a potential barrier even when the barrier height exceeds the particle’s rest energy. This ...
  • Maximally symmetric cosmologies 
    Şahin, Şelale. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    In this thesis we will give a review of maximally symmetric spacetimes. There are only three of these spacetimes namely, Minkowski, de Sitter and anti-de Sitter spacetimes represented with zero, positive and negative ...
  • Assessing a virtual reality display system for teleradiology purposes using the receiver operating curve methodology 
    Kocatürk, Eylem. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    In a radiology reading room, multiple flat displays are used for the comparison aspect. This approach increases the overall expense and also requires more space. So, virtual reality techniques can be applied to teleradiology. ...
  • Design, simulation and construction of particle and accelerator detectors 
    Ergenlik, Ezgi. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    As a part of the research being carried out at Bogazici University, Kandilli Detector, Accelerator And Instrumentation Laboratory, there was a need for beam parameter-measurement devices and tools such AC current transformer ...
  • Relativistic LEE model on 2+1 dimensional riemannian manifolds 
    Ünel, Meltem. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    In this work, we analyze a two-level system coupled to an arbitrary number of bosons with a relativistic dispersion relation in a static background metric while ignoring pair creation processes. One can obtain a non-perturbative ...
  • Design, simulation and construction of a wire chamber electronics 
    İstemihan, Zehra. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    A Delay Wire Chamber (DWC) is a gaseous particle detector which enables detection of charged particles and their trajectories. They are preferred as they provide good position resolution inexpensively and due to their ease ...
  • AE AQR :|a DQ her type cataclysmic variable binary system 
    Erkut, M. Hakan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1998., 1998.)
    AE Aquarii, a DQ Her type Cataclysmic Variable X-ray binary system, is observed with rosat, PSPC in the energy range 0.1-2.4 keV with a total of 5.74 hr period. As a result of spectral and timing analyses of the ROSAT X-ray ...
  • Diffusion - attenuated MR signal for paricles subject to forces or in disordered media 
    Şimşek, Kadir. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    Magnetic resonance imaging (MRI) have been advanced signi cantly since its discovery, especially in imaging soft biological structures. One of the most studied and improved technique in this eld is di usion MRI consisting ...
  • Search for heavy FCNC quarks at 13 TeV pp collisions at the LHC 
    Göktürk, Berare. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    In this thesis, we describe a search for heavy iso-singlet quarks that is foreseen by F. Gürsey, P. Sikivie, P. Ramond’s E6 grand unification model, through the pp → D ¯DX → HjZjX → 4j2`X flavor-changing neutral current decay ...
  • Dirac-delta potentials on a lattice 
    Tok, Tarık. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    In this thesis, the Dirac delta potential on a one dimensional infinite lattice structure [2] and its band gaps [3] are reviewed. Then, Green’s function and regu larization & renormalization process for the bound states in ...
  • 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. ...
  • 3 - D optical profilometry at micron scale with modified fiber optic Lloyd's mirror technique 
    İnanç, Arda. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    In this thesis, it is shown that a modified fiber optic Lloyd’s mirror technique is suitable and practical to produce fringe patterns that have easily adjustable frequency. This allows measuring 3D height distribution of ...
  • Symmetries global, local and asymptotic, applications of noether and covariant phase space methods 
    Şimşek, Ceyda. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    Primarily, global, local and asymptotic symmetries will be described and their correspondence in the conservation laws will be shown in this thesis. The latter will be managed by Noether’ s theorems and Covariant Phase ...
  • Chameleon search in Cast experiment at CERN 
    Bayirli, Arif. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    Chameleons are hypothetical particles that are proposed as a scalar field to ac count for the accelerated expansion of the universe, the so-called ‘dark energy problem’. They are proposed to be produced in the high magnetic ...
  • Stereographic coordinates for unitary quantum groups 
    Arıkan, Ali Serdar. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1998., 1998.)
    In this thesis, unitary matrix representation of quantum group SUq(2) is studied in terms of stereographic coordinates z, z* and its central unitary phase u. It is observed that this parametrization of SUq(2) can be regarded ...
  • Gravitational wave solutions to linearized Jordan Brans Dicke theory on a cosmological background 
    Dünya, Önder. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    In this thesis, approximate vacuum solutions of Jordan-Brans-Dicke theory for perturbed scalar eld and perturbed Robertson-Walker metric, were found. First we obtained solutions for the scale factor a(t) and the scalar ...
  • Narrow escape time in biology 
    Selçuk, Özlem. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    In biological systems, the main challenges in modeling transport processes can be summarized as being inside a heterogeneous medium, which is a fluctuating environment, and striving to reach to a chemically active receptor, ...