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Browsing M.S. Theses by Author "Anarım, Emin."

Browsing M.S. Theses by Author "Anarım, Emin."

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  • A decision tree based intrusion detection system with bootstrap aggregating, discretization, and feature selection 
    Özdemir, Seray. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    In this thesis, many machine learning techniques which are used for network intrusion detection are analyzed in detail. An intrusion detection system based on a combination of bootstrap aggregating, discretization, feature ...
  • A dynamically clock-controlled binary stream cipher with memory and dynamic multiplexing "the mono stream cipher" 
    Uzun, Orçun. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    Streams ciphers are appropriate for high speed encrypted communications because this type of ciphers provide high output speed and ease of implementation in hardware. Generally, stream ciphers makes use of Linear Feedback ...
  • A new irregular clocked linear feedback shift register based stream cipher "go" 
    Çetiner, Gökçe. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    Stream ciphers are an important class of encryption algorithms. They encrypt individual characters (usually binary digits) of a plaintext message one at a time, using an encryption transformation which varies with time. A ...
  • A new nonlinear combination generator "myboun" 
    Özgan, Meltem Doğaner. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    In cryptographic systems, usually linear feedback shift register based keystream generators are used because of the fact that they can produce sequences with large period, good statistical properties. They are suitable for ...
  • A new real-time time memory trade-of attack on A5/ 1 stream ciphers using "peculiar events" 
    Yazgan, Onur. (Thesis (M.S)-Bogazici University.Institute for Graduate Studies in Science and Engineering, 2005., 2005.)
    In this paper, we describe a new real-time attack on A5/1 stream ciphers thatachieves superior performance in terms of lower computation time and calculation complexity compared to most of the previous attacks of similar ...
  • A novel system model implementtation of network attacks and countermeasures 
    İnal, Beytül. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)
    The Internet is an open and e cient TCP/IP protocol which is most widely used in the world. As usage of the Internet and TCP/IP protocols increases, their lack of built-in security has become more and more problematic. ...
  • Active packet filtering against DDoS attack 
    Seifpoor, Tina. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    Distributed Denial of Service (DDoS) attacks are one of the dominant and persistent threats to the security of the Internet nowadays. The aim of these attacks are mainly resource or the bandwidth consumption with enormous ...
  • Adaptive optimization of EDCA parameters for QOS in multimedia applications 
    Çil, Alparslan Mustafa. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    The MAC layer of the IEEE 802.11 standard defines Distributed Channel Function (DCF), that provides simple and effective medium access mechanism. However with the increasing demand in multimedia applications and higher ...
  • An information gain based feature selection method and a network-based intrusion detection system framework utilizing anomaly detection using self organizing maps 
    Tiryakioğlu, Fatih. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    In this work, an information gain based feature selection method and a networkbased intrusion detection system utilizing anomaly detection using Self Organizing Maps (SOM) are proposed. KDD 99 (The International Knowledge ...
  • An irregular clock-controlled binary stream cipher with nonlinear feedback shift registers "the safe stream cipher" 
    Arslan, Serhat Eren. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    Stream ciphers are one of the most important classes of encryption algorithms used to ensure security in digital communication. The design of many stream ciphers is based on use of Linear Feedback Shift Registers (LFSRs), ...
  • Analysis of FXLMS algorithm for active noise control 
    Aytaç, Erdem. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    With the increased number of industrial equipment and automation, acoustic noise problem become more and more evident, which has many negative effects on human health. This work is concerned with analysis of filtered - ...
  • Analysis of the compression techniques and memory bit effects on compression for pseudo-random generation 
    Seren, Ümit. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    Compression of sequence is one of the most useful tools for strengthening the pseudo-random generators used in stream ciphers. Using compression components can prevent algebraic attacks against LFSR-based stream ciphers. ...
  • Angle of arrival estimation for cellular networks in multipath environments 
    Topaloğlu, Orçun. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    Estimation of a mobile user’s location within the wireless network has become a significant area of research within the last 10 years. Parallel to the increasing popularity of mobile phones, numerous location estimation ...
  • Application, analysis and realization of electronic article surveillance (EAS) systems 
    Dirik, Mustafa Orhan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)
    The aim of this work is to design, implement and verify a low cost microcontroller based electronic article surveillance (EAS) system prototype and is accomplished in great success. An EAS system is basically used for ...
  • Assessment of dynamic clustering in wireless sensor networks for the optimization of energy consumption 
    Balta, Aslı. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    Wireless sensor networks are the networks that contain many sensors which have di erent type of abilities such as sensing, communicating or processing. In recent years there are many applications based on these kind of ...
  • Bearing-only tracking with Kalman filters using smoothed measurements 
    Karakaya, Murat. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2021., 2021.)
    Kalman filter-based solutions proposed for nonlinear systems are frequently used in bearing-only tracking applications. Due to the physical conditions of these tracking applications, the measurements gathered may contain ...
  • BIT manipulation attack to ultralightweight RFID protocols 
    Ünsal, Cihan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)
    Radio frequency identification (RFID) enables identification of objects that are labeled with small tags in a wide variety of environments without needing a physical contact and a line-of-sight. A typical RFID system ...
  • Channel allocation system for wireless video communication in 802.11n MESH networks 
    Tekincan, Sinan. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    With the latest technological achievements, wireless communication is spreading all around the world and entering into the daily life of individuals more. Especially with the development of 802.11n standard, high data rate ...
  • Comparative evaluation of birth and death method and orthogonal matching pursuit in image analysis 
    Arslan, Fatih. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    We present a new approach to extract predefined circular objects, such as trees and oil tanks, from aerial images. We consider a stochastic approach based on an object process also called marked point process. The objects ...
  • Comparison of multicarrier CDMA with successive interference cancellation and interference cancellation with gibbs sampler 
    Yılmaz, Murat. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2005., 2005.)
    Recently Orthogonal Frequency Division Multiplexing (OFDM) has gained a lot ofattention and is the technology for Fourth Generation (4G) wireless systems because itpromises data rates up to 100 Mbps. A variation of OFDM ...

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