Fen Bilimleri Enstitüsü: Recent submissions

  • Novel fault-tolerant distributed algorithms for approximate Byzantine consensus 
    Haseltalab, Ali. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    Reaching consensus in a network which contains faulty nodes is a critical problem in the eld of distributed and multi-agent systems. A distributed system which intends to do a certain task needs to display robustness ...
  • Automatic topic categorization of Turkish Faxed Bank documents in the presence of OCR errors 
    Öztürk, Seçil. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    The technological advances in the last decades facilitated the easy transfer and storage of huge amounts of scanned soft documents. This improvement brings the challenge of automatically classifying big, unbalanced, ...
  • Wireless and batteryless instant velocity sensor for certain daily motions 
    Arıcıoğlu, Burak. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    The miniaturization studies in both integrated circuits (IC) and microelectromechanical systems (MEMS) have made it possible to have electronic systems that can operate with very low power. Sensors that are used for ...
  • An analog template router based on layout description script (LDS) 
    Sümengen, Cem. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    Long design-test cycles in full-custom design process leads to high design costs in analog circuit design. The objective of design automation is to decrease the design cost and the time to market by reducing the time spent ...
  • Distributed detection and decision fusion using particle filter concepts 
    Mamıkoğlu, Umut. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    In this thesis, a distributed detection and decision fusion system that operates under non Gaussian noise with unknown parameters is developed. The main objective is to nd decision rules for the local detectors and the ...
  • Evaluation of 2D local image descriptors and feature encoding methods for depth image based object class recognition 
    Kayım, Güney. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    In this thesis, we have investigated the 3D object class recognition problem. We used an approach that solves this problem with the use of depth images obtained from 3D object models. In the approach we used, 3D object ...
  • Design of the analog blocks used in a field programmable mixed array (FPMA) in 90-NM CMOS technology 
    Sarrafinezhad, Ata. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    The miniaturization trend in electronic circuits enforces integrating analog and digital circuits in a System On a Chip (SOC) solution, reviving a renewed interest in Field Programmable Mixed Arrays (FPMA). This approach ...
  • Fabrication and characterization of a planar water gated transistor utilizing ultra thin single crystalline silicon film 
    Ertop, Ozan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    In this thesis, the fabrication and characterization of a planar water-gated thin lm transistor are explained and analyzed. Silicon-on-insulator (SOI) wafer is used to build the device. Two di erent gate structures are ...
  • Time multiplexed video transmission 
    Sahillioğlu, M. Güneş. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1981., 1981.)
  • Mobility load balancing in self-organizing OFDMA networks 
    Tuncel, Nur Öykü. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    In any cellular network, load imbalance results in ine cient resource utilization and low throughput for cell-edge users. Mobility Load Balancing (MLB) is an essential feature of self-organizing networks (SON) concept in ...
  • Single sideband communication systems 
    Tunca, Gür. (Thesis (M.S.)- Robert College. Faculty of Graduate School of Engineering, 1965., 1965.)
  • Spatial modulation MIMO systems with dual-polarized antennas 
    Zafari, Golara. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    In wireless communication systems, multiple-input multiple-output (MIMO) systems have been widely used during the past decades to achieve better performance. However, there is an inevitable issue due to the usage of ...
  • Design of low power continuous time analog to digital converters 
    Parasnejad, Sina. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    A second order CT modulator for audio frequency sensory systems in 180nm TSMC CMOS process is presented. The design incorporates a C-gm based current mode structure with 2nd order noise shaping, a 25 kHz bandwidth, a ...
  • Electroplating RF mems resonators and optical characterization 
    Kouhani, Mohammad Hossein Mazaheri. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    Magnetic resonance imaging (MRI) is an advantageous imaging platform for endovascular interventions due to its higher safety and performance comparing with other imaging techniques. Localization of the catheter under MRI ...
  • Low power continuous time sigma delta modulator and decimation filter design 
    İnce, Mehmet. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    Sigma Delta analog to digital converters (ADC) are widely used in areas where high resolution is needed. Audio applications are one of these areas. Along with high resolution, reducing the power consumption of an ADC is a ...
  • The role of quadratic lyapunov functions in averaging based consensus algorithms 
    Aydemir, Gürkan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    Distributed consensus, that is described as the notion of achieving a common value by local information exchange, has been a popular research subject in recent years. Averaging based distributed consensus algorithms are ...
  • Inter-cell interference coordination in OFDMA networks: two autonomous-distributed algorithms 
    Gök, Alican. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    In OFDMA cellular networks, inter-cell interference hinders system performance, especially for users located at the cell edges. Inter-cell interference coordination (ICIC) techniques have been investigated by both the ...
  • Image construction and cancer tissue detection algorithms for portable confocal microscopy system 
    Koç, Gamze. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    This thesis focuses on three main issues; namely, (i) image acquisition of cancer tissue, (ii) image stitching and (iii) image processing for cancer detection. An algorithm and a related circuity are implemented to create ...
  • Robust watermarking of compressive sensed measurements under noise attacks 
    Yamaç, Mehmet. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    Traditional methods in data acquisition follow Shannon /Nyquist sampling theorem; one must sample a band-limited signal by at least two times faster than the signal bandwidth to exactly reconstruct the signal. However, ...
  • DDoS attack detection using frequency domain characteristics 
    Fouladi, Ramin Fadaei. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    Providing 24-hour service to the users, is one of the major concerns of network administrators. A denial of service attack refers to a condition that a server cannot give normal services to its legitimate clients due to ...

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