Fen Bilimleri Enstitüsü: Recent submissions

  • Segment - based object detection and recognition 
    Erdem, Rabia Gökçe. (Thesis (M.A.) - Bogazici University. Institute for Graduate Studies in the Social Sciences, 2018., 2018.)
    This thesis is concerned with object detection and recognition in complex scenes. Both are necessary if robots are to be capable of interacting with their surroundings. Object detection is based on color based segmentation. ...
  • EEG source localization in an economic motivation game 
    Kazanç, Mehmet Emin. (Thesis (M.A.) - Bogazici University. Institute for Graduate Studies in the Social Sciences, 2018., 2018.)
    In this study, the correlations between EEG sources in multiple brain areas and the performance feedback in a motivation game were studied. EEG data were collected from 14 (6 male, 8 female) participants with 19 channels ...
  • Analysis of switched capacitor networks 
    Savacı, F. Acar. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1982., 1982.)
    In this thesis, after introducing the advantages of switched capacitor (SC) networks, several time-domain analys methods of SC networks have been investigated and compared. with each other. An efficient method for the ...
  • 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 ...
  • Design and fabrication of 3-D MEMS micro scanner for confocal microscopy 
    Efe, Barış Can. (Thesis (M.A.) - Bogazici University. Institute for Graduate Studies in the Social Sciences, 2018., 2018.)
    Microelectromechanical systems (MEMS) technology is the technology of design and fabrication of microscopic devices. Using MEMS techniques the size of the devices can be minimized as well as the fabrication cost. Laser ...
  • Precoded dual - polarized spatial modulation over correlated fading channels 
    Kazemipourleilabadi, Negin. (Thesis (M.A.) - Bogazici University. Institute for Graduate Studies in the Social Sciences, 2018., 2018.)
    In wireless communication systems, multiple-input multiple-output (MIMO) sys tems have been emerged and widely used during past decades to achieve higher data rates, better quality of service and higher network capacity. ...
  • Analysis of cluster consensus in continuous - time networks with time delays 
    Develer, Ümit. (Thesis (M.A.) - Bogazici University. Institute for Graduate Studies in the Social Sciences, 2018., 2018.)
    In recent years, distributed coordination of multi-agent systems has the atten tion of many researchers due to its potential applications in various fields including group robots, distributed sensor networks, bird flocks, ...
  • Design and development of current - mode hall sensor microarray with analog front - end and ADC integrated circuit 
    Tunçtürk, Özcan. (Thesis (M.A.) - Bogazici University. Institute for Graduate Studies in the Social Sciences, 2018., 2018.)
    A study of current-mode cross-shaped Hall effect sensors with detailed analyses of each building block of Hall effect sensor microsystems including analog front-end com ponents, and readout circuitry is presented. These ...
  • Open platform for attack and countermeasure analysis on system security 
    Bal, Özgün. (Thesis (M.A.) - Bogazici University. Institute for Graduate Studies in the Social Sciences, 2018., 2018.)
    Attack detection and prevention is an essential subject in contemporary security practices. Like early detection of attacks, fast decision that includes optimum option is also an important issue. Selection of right prevention ...
  • An MRI compatible band GAP dependent fiber optic temperature sensor 
    Deniz, Ahmet. (Thesis (M.A.) - Bogazici University. Institute for Graduate Studies in the Social Sciences, 2018., 2018.)
    Fiber optic sensors (FOTSs) have been a research topic over two decades. Many sensor types were developed in different schemes. Among many other parameters like pressure, location, PH level detection..etc, which can be ...
  • Time series analysis of distributed denial of service attacks in intrusion detection systems 
    Kayataş, Cemil Eren. (Thesis (M.A.) - Bogazici University. Institute for Graduate Studies in the Social Sciences, 2018., 2018.)
    Denial of Service (DoS) and Distributed Denial of Service (DDoS) attacks cause million dollar losses to the companies, hence network security has become one of the most important topic in the modern world. DDoS attacks ...
  • Applying machine learning and natural language processing techniques to twitter sentiment classification for Turkish and English 
    Ayata, Değer. (Thesis (M.A.) - Bogazici University. Institute for Graduate Studies in the Social Sciences, 2018., 2018.)
    Determining the feelings of a user on a topic is called sentiment analysis. Senti ment analysis is done so as not just to get a sort of feedback data for decision making but also to check the emotions, characteristics and ...
  • Simulation of separately excited chopper controlled DC machine 
    Öncü, Osman. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1982., 1982.)
    In this thesis, a novel approach for the simulatlon of a chopper-fed dc machlne, is presented. Instead of the general technique of combining the Kirchhoff's voltage, current and branch characteristic equations, which would ...
  • A delayed feedback based practical chaos control method: Tail aperture feedback 
    Terbaş, Dilge. (Thesis (M.A.) - Bogazici University. Institute for Graduate Studies in the Social Sciences, 2018., 2018.)
    Control of chaotic systems has been one of the central issues in the field of chaotic dynamics since early 1990s. A particularly simple and practical method is the Delayed Feedback Control (DFC) introduced by Kestutis ...
  • Tunable frequency resonator design and realization 
    Şen, Yasemin. (Thesis (M.A.) - Bogazici University. Institute for Graduate Studies in the Social Sciences, 2018., 2018.)
    Oscillators are used to generate microwave signals in many electronic circuits in communication systems. Voltage controlled oscillators are also frequently found in electronic circuits. Resonance frequency is the determining ...
  • A new generation embedded systems design for robocup SSL robots 
    Turan, Günay. (Thesis (M.A.) - Bogazici University. Institute for Graduate Studies in the Social Sciences, 2018., 2018.)
    RoboCup Small Size League (SSL) is one of the most competitive divisions in the RoboCup where international universities compete with their state of the art robotic hardware and software designs. In the SSL, teams build ...
  • DOS attack mitigation in IOT 
    Çel, Ömer. (Thesis (M.A.) - Bogazici University. Institute for Graduate Studies in the Social Sciences, 2018., 2018.)
    In recent years, IOT applications have entered the world of information rapidly and are becoming more and more active every day. The number of end devices in the IOT has increased exponentially with respect to the previous ...
  • Multiple user and channel interference reduction methods for molecular communication via diffusion systems 
    Gürsoy, Mustafa Can. (Thesis (M.A.) - Bogazici University. Institute for Graduate Studies in the Social Sciences, 2017., 2017.)
    Molecular Communication via Diffusion (MCvD) is a very efficient way of com municating at the nano-scale, due to its simplicity and low energy cost. However, MCvD systems are subject to severe inter-symbol interference which ...
  • Constructin semantic place representations via object discovery and visual exploration 
    Odabaşı, Çağatay. (Thesis (M.A.) - Bogazici University. Institute for Graduate Studies in the Social Sciences, 2017., 2017.)
    The goal of this thesis is to develop a Semantic Place Model (SPM) using a mobile robot with a pan-tilt camera. Here, a semantic place model is de ned to be an egocentric representation of objects and their spatial relations ...
  • Competition between chaos control and chaos synchronization in small sized networks 
    Aktekin, Özgür. (Thesis (M.A.) - Bogazici University. Institute for Graduate Studies in the Social Sciences, 2017., 2017.)
    Control and synchronization of chaotic systems have been two important issues of investigation in the eld of chaotic dynamics since early 1990s. Stabilization of chaotic systems at an unstable periodic orbit (UPO) via ...