Fizik: Recent submissions

  • 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, ...
  • Born-oppenheimer approximation for some singular systems 
    Akbaş, Hacı. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    In this thesis we try to solve the energy spectrum of heavy particles in three body singular system by using the Born-Oppenheimer approximation. Heavy particles are carrying attractive Dirac-Delta function potential so, ...
  • Active brownian particles propelled by sound 
    Kaya, Serhat. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    Small particles in acoustic elds experience the so-called acoustic radiation forces by which the motion of particles can be manipulated in a contact-less way. Active Brownian particles have the ability to propel themselves ...
  • Geodesics of the schwarzschild black hole 
    Tuna Pesen, Medine. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    Black holes are best known with their strong gravitational eld from which even light can not escape. They are sometimes called spacetime singularities [1, 2]. There are observational evidence of existence of black holes ...
  • Gas composition studies at the 2015 atlas TRT test beam 
    Çelebi, Emre. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    Transition Radiation Tracker (TRT) is a subsystem of the ATLAS inner detector. It provides many hits on charged particle tracking and helps particle identi cation by measuring transition radiation. At the end of the rst ...
  • Phase 1 upgrade of the hadronic forward calorimeter - testing the frontend daq electronics cards 
    Köseyan, Ohannes Kamer. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    The original CMS HF Photomultiplier tubes (PMT) that were used by the CMS experiment during Run I were Hamamatsu R7525 single anode PMTs. These PMTs had a known issue of producing anomalous events due to the Cherenkov ...
  • Kinetic theory in k=0 Friedmann-Robertson-Walker cosmology 
    Tülümen, Nimet. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    In the thesis we calculated Boltzmann Equation in RW metric. After that in the at space-like slices we showed that for RW metric it is not possible to nd any equilibrium solutions. However we looked for the equilibrium ...
  • Search for pair produced heavy quarks decaying into a Z boson and a light generation jet 
    Iştın, Serhat. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2015., 2015.)
    We present here our results from the search for the pair production of new massive quarks using 20fb{u100000}1 data collected by the ATLAS detector in 2012 protonproton collisions at p s =8TeV centre of mass energy. There ...
  • 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 ...
  • Average values of the functional equation factors at the zeros of derivatives of dirichlet L-functions 
    Elma, Ertan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2015., 2015.)
    In this work, average values of the functional equation factors of Riemann Zeta function and Dirichlet L-functions at the zeros of derivatives of Dirichlet L-functions are calculated.
  • Acoustic radiation enhanced drug delivery 
    Yılmaz, Defne. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2015., 2015.)
    Drug development is one of the main concerns in cancer research. In recent years, lots of new drugs have been discovered in order to increase the e ciency of cancer treatment and enhance the quality of patient's life. ...
  • The entrance of modern optics to Ottoman science 
    Pekkendir, Sena. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2015., 2015.)
    In Ottoman State, modern sciences were brought into the country as a result of military targets. The first engineering schools were being established from the beginning of 18th century and foreigner scholars were brought ...
  • An interferometric vibration sensor based on a four - core optical fiber 
    Gökbulut, Belkıs. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    In this thesis, an interferometric fiber optic vibration sensor based on a four-core optical fiber is described. When the light is coupled into the four cores, each core acts as a mutually coherent waveguide with the other ...
  • Integrability of non-linear differential equations; lax formulation and bi-Hamiltonian structures 
    Güntürk, Kamil Serkan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Sciences and Engineering, 1998., 1998.)
    The integrability of non-linear differential equations are studied on the basis of Lax and bi-Hamiltonian formulations. The relations between the Lax formalism and bi-Hamiltonian structures are analysed and illustrated ...