Başlık için Ph.D. Theses listeleme

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  • Measurement of heat, strain, and refractive index with multicore optical fibers 
    Güvenç Kılıç, Sema. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)
    In this thesis, different types of multicore optical fibers are designed and employed in the optical sensing experimental setups to investigate their detection abilities of temperature, heat transfer rate, strain, and ...
  • Measurement of the differential dijet production cross section in proton-proton collisions at √s= 7 TeV 
    Işıldak, Bora. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    A measurement of the double-di erential inclusive dijet production cross section in proton-proton collisions at √s = 7 TeV is presented as a function of the dijet invariant mass and jet rapidity. The data correspond to ...
  • Mechanical characterization of cells and tissues by scanning acoustic microscopy and optical tweezers 
    Demirkan, İrem. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)
    Cell and tissue mechanics has a vital role in several pathological and physiological processes. Mechanical perturbations produce numerous biological processes within a cell or a tissue, which can result in mechanical ...
  • Modified theories of gravity via alternative couplings and their cosmological analyses 
    Kavuk, Mehmet. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2015., 2015.)
    We propose alternative gravitational couplings, fields and design some models to explain some cosmological problems. We investigate a cosmological model in which the Stueckelberg fields describing a massive photon are ...
  • Multiparameter generalization of deformed particle algebras 
    Arıkan, Ali Serdar. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2004., 2004.)
    In this study, we generalize deformed boson and fermion algebras by considering as many deformation parameters as possible. The restriction on the number of deformation parameters emerges from the relations leaving the ...
  • Nonrelativistic limit of Bose-Einstein condensation in a static spacetime 
    İşeri, İslam Çağrı. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    Nonrelativistic limit of thermodynamics of noninteracting Bose field in curved background is investigated via a post-Newtonian approach. In large but finite c limit matter becomes nonrelativistic whereas the geometry stays ...
  • Normal forms, nonlocal chaotic behaviour in sportt and NMR systems 
    Perdahçı, Nazım Ziya. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2002., 2002.)
    Poincaré's theory of normal forms is applied to a number of simple chaotic Sprott flows that have resonant eigenvalues. It is shown that the normal form expansion can give significant information not limited to the local ...
  • Numerical modeling, design, and time-frequncy metrology applications of low-noise optical frequency combs 
    Şenel, Çağrı. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2022., 2022)
    Optical frequency combs are very versatile tools, which revolutionized many ar eas, and enabled novel applications, especially in time-frequency metrology. In this thesis, I tried to convey a complete picture of the road ...
  • 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 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 ...
  • Perturbative and non-perturbative physics from singularities 
    Pazarbaşı, Cihan. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2022., 2022), 2022)
    A function that representing a physical quantity has singularities which con tain perturbative or non-perturbative information about the physical system under investigation. Moreover, the theory of resurgence tells us that ...
  • Photoacoustic signal characterization of cell morphology in microchannel flow 
    Uluç, Nasire. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    Photoacoustic (PA) imaging, a hybrid imaging modality, provides both functional and structural information of biological tissue by combining both optical imaging and ultrasound imaging. It takes advantages of high contrast ...
  • Photoacoustic signal detection via atomic force microscopy cantilevers 
    Demirkıran, Aytaç. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    In this thesis, we first present a custom-designed photoacoustic microscopy system (PAM) which includes two separate excitation lasers. One of these tools is a novel fiber-based laser system developed particularly for ...
  • Physical modeling of drug transport in cancer 
    Yonucu, Şirin. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    Understanding the interaction of tumors with their microenvironment is imper ative to understand its development and to increase the efficiency of therapies. In addition to all other genetic and biochemical determinants of ...
  • 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 ...
  • Probing mechanical and chemical properties of biological materials by multiple modalities 
    Pesen, Medine Tuna. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2022., 2022)
    Mechanical and chemical alterations are the signature of most diseases, such as endometriosis, sickle cell, malaria, and cancer. Detecting such alterations has vital importance for early diagnosis and efficient treatments. ...
  • Quantum group structures associated with invariances of some physical algebras 
    Kayserilioğlu, Ufuk. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2005., 2005.)
    In this study, the anticommuting spin algebra is introduced and it is shownto be invariant under the action of the quantum group SOq=-1(3). Furthermore, itsrepresentations and Hopf algebra structure are studied and found ...
  • Quantum phenomena and shape dynamics 
    Dündar, Furkan Semih. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    In this thesis, we considered quantum phenomena (Unruh effect) in Shape Dy namics, version of Bohmian Mechanics that is compatible with Mach’s Principle, and a solution (gravitational collapse of a spherically symmetric ...
  • Scaling solutions of N = 2 supergravity and holography 
    Mirfendereski, Delaram. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    The 4D N = 2 SUGRA is the low energy limit of Type II string theory compactified on a Calabi-Yau three-fold. The theory contains BPS black holes with multi centered configurations consisting of bound states of dyonic ...
  • Search for axions with micromegas detectors in the cern cast experiment 
    Yıldız, Süleyman Cenk. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2013., 2013.)
    The CAST experiment is searching for the axion, which is a light, weakly interacting pseudoscalar particle, that is proposed to solve the so called Strong Charge-Parity Problem. The axions CAST is looking for are produced ...

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