Fen Bilimleri Enstitüsü: Recent submissions

  • Keyword search for sign language 
    Tamer, Nazif Can. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)
    Sign language is the main communication tool for the hearing impaired. However, the information retrieval from sign language is not as easy as in spoken languages. In this thesis, three methods of information retrieval are ...
  • Design of 180nm CMOS impulse radio ultra wideband transmitter for biomedical imaging 
    Ramazanoğlu, Semih. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)
    This thesis is about the design of radio-frequency (RF) integrated circuits for Impulse Radio Ultra-Wideband (IR-UWB) transmitter which is a system of ultra-low power pulse shaping methods for achieving low energy per pulse ...
  • A practical approach to MIL-STD-1553 bus transceiver analog front end with discrete components and IC design under UMC130NM process 
    Soltani, Amin. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)
    This thesis deals with the research and built of a commercially operational MILSTD- 1553 Bus Transceiver Analog front end in both PCB with discrete elements and CMOS IC design in Cadence under umc130nm technology which are ...
  • User clustering in multi cellular millimeter wave noma systems 
    Tuncer, Ahmet Ersel. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)
    Nonorthogonal multiple access (NOMA) su ers from intra-beam interference in addition to inter-beam interference. Therefore, its performance is highly interference limited. However, implementation of NOMA on millimeter wave ...
  • Host-to-host TCP/IP connection over serial ports using Li-Fi for internet connection 
    Altunay, Ömer. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)
    Li-Fi (Light Fidelity) is a new technology used in communication, it uses existing light to send data and cannot be detected by human eyes. Especially for military purposes, which require secure signals, this technology ...
  • Multimodal representation learning for synchronized speech and videos 
    Köse, Öykü Deniz. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)
    The amount of multimedia data has been increased rapidly in recent years. While this data growth enables multimodal neural network based studies, it has also resulted in a need for e cient storage and retrieval systems for ...
  • Solution of general TPBVP's in optimal control using the sensitivity method 
    Mercanköşk, Güven. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1983., 1983.)
    In this thesis, general TPBVP's in Optimal Control have been analyzed using the sensitivity method. A solution method, which uses the trajectory sensitivities to solve general TPBVP's, is developed. Existence of the solutions ...
  • Application of deep learning for array microphone processing 
    Akyürek, Muhammed Furkan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)
    Array microphone processing is a complex application with multiple interlinked components like direction of arrival for the audio sources, beamforming and postfiltering that are dependent on the array geometry. The array ...
  • Unsupervised term discovery for sign language 
    Polat, Korhan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)
    Current sign language recognition systems rely on supervision for training successful models. However, in order to utilize the large amount of unlabeled sign language resources, unsupervised learning methods are needed. ...
  • Blind code identification using deep neural networks 
    Keçeci, Cihat. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    The non-hierarchical communication paradigm shift in the next generation wireless networks reveals the requirement for the adaptive con guration of communication parameters in order to provide exibility across di erent ...
  • Antenna coupled metamaterial inspired passive sensors for glaucoma monitoring 
    Çalıkoğlu, Ümmühan Aybüke. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    Glaucoma is an eye disease that may cause blindness by damaging the optic nerve due to elevation of the intraocular pressure. In this thesis, a passive metamaterial inspired resonator sensor for non-invasive and continuous ...
  • Hardware implementation for 802.11b/g/n signal classification 
    Çetin, Ramazan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    The number of devices which can communicate wirelessly are increasing with the technological improvements day by day. This situation causes congestion on electromagnetic RF spectrum. RF spectrum should be utilized e ciently ...
  • Modeling and simulation of the emissivity of vegetation using passive remote sensing methods 
    Şen, Ali Alperen. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    Remote sensing is a scientific technique to acquire characteristics of object with out physical contact. Gravitational, magnetic, optical and electrostatic forces and resulting actions are sources for remote sensors. ...
  • Super regenerative receiver design for medical implant devices 
    Pekçokgüler, Naci. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    Implant devices are one kind of the state-of-art medical equipment, which have been started to be used widely in diagnosis and treatment. Implanted devices require wireless data transfer for the comfort of patients and ...
  • Hardware acceleration for multiple sequence alignment of proteins 
    Ateşpare, İbrahim. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    Multiple Sequence Alignment (MSA), which has been an active research area for a long time, is a computational task that is used in the field of bioinformatics. MSA for proteins involves the process of aligning three or more ...
  • Paper based integrated microfluidic system using electro-osmotic pumps with liquid bridges 
    Çelik, Ahmet Yasin. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    This thesis demonstrates a novel paper based microfluidic device with electro osmotic pumping mechanism that was designed, optimized, simulated, fabricated and analyzed. Optimization of paper based electro-osmotic pumping ...
  • BIT interleaved coded spatial modulation 
    Kadı, Furkan Kerim. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    Spatial modulation is a novel modulation technique that utilize antenna space in addition to symbol space for information transmission. This technique is implemented with the well known BICM system to provide robustness ...
  • Microprocessor based dead reckoning table 
    Evren, Tayfun. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1983., 1983.)
    The appllcation areas or microprocessors have been growing recently. In addition to various areas, efficient and reliable results have been obtained in military applications. The object of this thesis is to apply microprocessor ...
  • Speed control of three-phase induction motors by changing air-gap flux 
    Dinçer, Gönül. (Thesis (M.S.) - Robert College. Faculty of Graduate School of Engineering, 1965., 1965.)
    In this paper the speed control of three-phase induction motors by changing the air-gap flux is studied with D.C or Singlephase A.C voltage applied to the auxiliary stator winding. In parts A and B the theoretical concept ...
  • Spectral analysis of cancer biomarkers in human serum using a custom portable analyzer 
    Oktay, Kaan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    In this study, we systematically evaluate metabolites and proteins in blood to develop a pipeline to identify potential biomarkers for breast cancer risk. Our aim is to identify a group of molecules, which can be targeted ...