Browsing Ph.D. Theses by Title

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  • Keyword search for low resource languages 
    Gündoğdu, M. Batuhan. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    Retrieval of spoken content is one key endeavor, not only for finding the speech parts of interest, but also for an automated and facilitated speech mining towards better automatic speech recognition (ASR) systems. In ...
  • LMI formulations for a class of nonconvex quadratic programming problems 
    Yıldıran, Uğur. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    Finding the optimal value of a polynomial function over a region determined by a finite number of polynomial constraints and determining the emptiness of such a region constitute major problems encountered in control theory ...
  • Low power sigma delta analog to digital converter design methods 
    Akçakaya, Feyyaz Melih. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    Sigma delta analog to digital conversion is an effective way of converting analog signals to digital signals when high signal to noise ratio and low power consumption is needed. Instead of comparing the input signal with ...
  • Low-voltage low-power design and implementation of current-mode circuits 
    Çakır, Cem. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    Low-voltage and low-power analog and digital circuits are needed to realize batteryoptimized, reliable and low-cost electronic devices for many applications. Example applications include remote environmental monitoring, ...
  • Machine heath monitoring for cyber-physical systems 
    Aydemir, Gürkan. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)
    Estimating the failure time of the machinery that are used in the production is crucial to achieve an e cient maintenance in Industry 4:0 era. Remaining useful life (RUL) is the term that refers to the length of time in ...
  • Magnetically actuated MEMS scanners for laser scanning confocal microscopy 
    Oyman, Hilmi Artun. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    Magnetically actutated micro-scanners are fabricated via three-dimensional (3D) printingandlasermachiningtechnologiestouseinalaserscanningconfocalmicroscopy application. First, a 3D printed polymer based scanning mirror ...
  • Model based multiple audio sequence alignment 
    Başaran, Doğaç. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2015., 2015.)
    It is increasingly more common that an occasion is recorded by multiple individuals with the proliferation of recording devices such as smart phones. When properly aligned, these recordings may provide several audio and ...
  • Modeling and simulation of interaction between light sources and living biological tissues 
    Çitkaya, Ahmet Yasin. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2013., 2013.)
    The assessment of exposure level due to commonly used light sources needs specific attention in today's technology of lighting. The main reason behind this concern is that if exposure levels are not known, the biological ...
  • Modelling the population dynamics in a cell culture at two different scales 
    Habiboğlu, Mehmet Gökhan. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2015., 2015.)
    In this thesis the development of three novel models at two di erent scales are presented for population dynamics in cell cultures. Biological knowledge and empirical observations are used to design an agent-based discrete-time ...
  • Modern spectrum estimation 
    Aktar, Mustafa. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1983., 1983.)
  • Molecular communication in diffusion based channel 
    Akdeniz, Bayram Cevdet. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    This thesis deals with diffusion based molecular communication. Unlike conven tional communication systems, the information is encoded with molecules and these molecules are emitted by nanodevices in a diffusive environment. ...
  • Multi-dimensional yield-aware optimization of the analog and heterogeneous circuits 
    Pak, Murat. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)
    Even though the design of digital circuits is well supported by several CAD tools, this is not the case for analog circuits and MEMS where the design is typically hand-crafted by expert designers. Several tools have been ...
  • Multi-modal tensor representations of brain networks 
    Durusoy, Göktekin. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2021., 2021.)
    Considering the economic, social and psychological burdens of Alzheimer’s disease (AD), the most common form of dementia, it is essential to gain insight into the process and underlying mechanisms of the disease. Using ...
  • Multilayer perceptron neural network in analog VLSI-A system level study 
    Öğrenci, Arif Selçuk. (Thesis (Ph.D.)- Bogazici University. Institute for Graduate Studies in Science and Engineering, 1999., 1999.)
    Analog neural networks exhibit a potential for proper/suitable hardware implementation of artificial neural networks. Their advantages such as small size, low power and high speed, however, are seriously questioned/confronted ...
  • Multiprocessor optimizations: |interconnection and task assignment 
    Erdim, Füsun. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1985., 1985.)
    Effective spreading of the use of muLtiprocessors, -or distributed processing in general-, and achieving the potential advantages of this new design option require various hardware and software-related probLems to be solved. ...
  • Multirobot communication and task coordination 
    Bayram, Haluk. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2013., 2013.)
    This thesis is concerned with multi-robot systems. Robots are increasingly being used in applications such as patrolling or exploration whose natures necessitate the consideration of multiple cooperating robots. The ...
  • Multivariate modeling and diagnostic classification of pulmonary sounds 
    Şen, İpek. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2013., 2013.)
    Computerized pulmonary sounds analysis has become prevalent in the recent decades as it provides means for quantitative and objective evaluation, contrary to the limited and subjective nature of stethoscope auscultation. ...
  • Non-rigid registration-based data-driven 3D facial action unit detection 
    Savran, Arman. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    Automated analysis of facial expressions has been an active area of study due to its potential applications not only for intelligent human-computer interfaces but also for human facial behavior research. To advance automatic ...
  • Novel results on frequency estimation and statistical characterization of three spectral estimation techniques 
    Anarın, Emin. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1985., 1985.)
    The problem of detecting a sinusoidal signal in white noise and estimati on of its parameters is essentially a problem in signal processing such as radar, sonar, biomedical, etc. In this dissertation, various modern spectrum ...
  • Novel signal processing techniques for fiber optic distributed acoustic sensing 
    Ölçer, İbrahim. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    In this thesis, to reduce the effect of noise in phase-sensitive optical time domain based (φ-OTDR) distributed acoustic sensing (DAS) systems, two novel approaches are proposed and a real experimental φ-OTDR system is ...

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