Browsing Fen Bilimleri Enstitüsü by Title

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  • Vibration transmission through rolling element bearings 
    Oğuz, Serap. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1995., 1995.)
    Current bearing models, based on either ideal boundary condition or purely translational stiffness element description, may be used to analyze the free and forced vibration of the rotor dynamic systems enclosed in a rigid ...
  • Vibration-based damage detection and seismic performance assessment 
    Özer, Ekin. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)
    Reliability estimation is one of the key ingredients of performance evaluation and risk assessment strategies in structural and earthquake engineering. Residual life estimation is of great importance since design principles ...
  • Vibration-based structural health monitoring of a wind turbine incorporating environmental and operational conditions 
    Hanbay, Serap. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    Structural health monitoring of wind turbines has become important in recent years in order to detect any damage in such structures at its early stage and avoid sudden collapse. Modal parameters which represent the dynamic ...
  • Video and image based face analysis with extreme learning machines 
    Gürpınar, Furkan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    Automatic analysis of human behavior has been a difficult problem due to noise, environmental differences and lack of annotation. While lab-controlled data provides an easier learning experiment, “in the wild” datasets require ...
  • Video based automatic affect analysis of a child and a therapist during play therapy 
    Türkmen, Batıkan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    With recent developments in machine and deep learning techniques and the ad vent of big data, computer vision supports many disciplines, including social sciences. Although computer vision is used in social signal processing ...
  • Virtual screening and docking of potential protein kinase B inhibitors 
    Kenar, Seval. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)
    This study aims to carry out a molecular docking process of novel ATP competitive inhibitors for protein kinase B-beta (PKBβ / AKT-2), activation of which has been observed in 30-40% of ovarian and pancreatic cancers. 3D ...
  • Virulence and genetic diversity of Colletotrichum Lindemuthianum isolates collected from common bean varieties of Turkey 
    Küçükyan Canseven, Serli. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    The common bean (Phaseolus vulgaris L.) is the most widely distributed and consumed legume species of the genus Phaseolus. As one of the major producer in the world, common bean production is highly dominated by the Black ...
  • Vision based automated landing of quadrotors 
    Mete, Mustafa. (Thesis (M.A.) - Bogazici University. Institute for Graduate Studies in the Social Sciences, 2018., 2018.)
    This thesis focuses on the design and development of quadrotors that are capable of autonomous landing on a stationary platform. This problem is motivated by the fact that quadrotors have to land frequently to charge their ...
  • Vision based control algorithms for a small size robot soccer team 
    Karaoğuz, Hakan. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    Multi-robot coordination is one of the hot topics of today's robotics research. In our case, our main concern is to build up a small sized (SSL) robot soccer team. Robot soccer requires e ective and fast robot control and ...
  • Vision based real-time continuous 3D hand gesture recognition interface for generic applications based on input-output hidden Markov models 
    Keskin, Cem. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    This study focuses on the application of InputOutput Hidden Markov Models (IOHMM) to the recognition of 3D hand gestures that involve both hand motion and hand posture in a stereo visionbased approach. The proposed system ...
  • Vision based sign language recognition: modeling and recognizing isolated signs with manual and non-manual components 
    Aran, Oya. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    This thesis addresses the problem of vision based sign language recognition and focuses on three main tasks to design improved techniques that increase the perfor- mance of sign language recognition systems. We first attack ...
  • Vision correction for the visually impaired via digital image processing 
    Keleş, Onur. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    In this study, an adjustment based on the mathematical modeling on digital screens for people with refractive visual impairments is proposed. According to the laws of refraction and diffraction, the human eye can be considered ...
  • Visual product recognition from retail scenes 
    Aydın, Alper. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    In this thesis project, we explore the problem of recognizing the products in retail scenes. We proposed a method where we localize the products by detecting their separating boundaries and recognize the product images ...
  • VLSI implemantation of an M-band wavelet filter 
    Atabek, K. Yavuz. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1996., 1996.)
    In this thesis, an integrated circuit realizing M-Band wavelet transfqrm and its perfect reconstruction (PR) counter part is designed. Although M is taken as 4 in the design, the M-Band Wavelet Transform has all four ...
  • VLSI implementation of a new standard for lossless compression of continuous-tone still images 
    Aktürk, A. Suat. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1998., 1998.)
    In this thesis, an integrated circuit realizing lossless compression of continuous-tone still images is designed. Lossless compression has two main parts. In the encoding part, digital source image data are encoded in order ...
  • VLSI implementation of a secure communication system using current-mode chaotic circuits 
    Nişancı, Sedat. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1999., 1999.)
    Analogue IC(Integrated Circuit) design is historically seen as a voltage dominated form of signal processing. In fact, the analogue devices that are often used (e.g. transistors) are current output devices, so we can utilize ...
  • Voice conversion for reconstruction of dysphonic speech 
    Tarakcıoğlu, Gönenç Seçil. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    The medical term "dysphonia" is used for voice disorders caused by functional impairment of voice organs which results in inadequate oscillatory movement of the vocal folds. Dysphonic speech is typically hoarse, rough and ...
  • Voice driven keyword spotter 
    Çengelci, Onur. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    We designed a voice driven keyword spotter. To improve the success of the system, we made use of synthetically generated voice inputs in addition to natural voice inputs and used approximate string matching instead of exact ...
  • VoIP performance in NGEO satellite IP networks with on-board processing capability 
    Bayhan, Suzan. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    In this thesis study, an adaptive routing policy utilizing the real-time network information of a two-layered satellite network is introduced. In a satellite network, de- pending on the requirements and properties of ...
  • Vulnerability of networks against rank ordered independent link failures 
    Çolak, Serdar. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    In this study, various random and regular networks are investigated and compared in terms of their vulnerabilities against independent but ordered failures. Upon the mathematical basis of graph theory, methods of analysis ...

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