Browsing Fen Bilimleri Enstitüsü by Title

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  • Nonuniformity in wireless sensor networks 
    Koşar, Rabun. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    Deemed as suitable for various challenging sensing tasks, wireless sensor networks evolve as candidates for deployment to different environments to perform the given task for as long as possible. Those networks operate ...
  • Normal form approach to some chaotic sprott systems 
    İldeş, Medine. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    In this study, the normal form method which had been previously applied to three of the Sprott systems is applied to three other Sprott systems with a different eigenvalue structure of their linearized parts. It is seen ...
  • Normal forms, nonlocal chaotic behaviour in sportt and NMR systems 
    Perdahçı, Nazım Ziya. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2002., 2002.)
    Poincaré's theory of normal forms is applied to a number of simple chaotic Sprott flows that have resonant eigenvalues. It is shown that the normal form expansion can give significant information not limited to the local ...
  • Novel biofunctional polyester nanofibers 
    Arslan, Evrim. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    In recent years, nanofibers have gained much attention in different scientific fields due to their potential applications. Increased interest arise due to their promising properties such as high surface-to-volume ratio, ...
  • Novel dendron-polymer conjugates for drug delivery 
    Gök, Özgül. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    Multi-armed macromolecules have attracted increasing attention as polymeric scaffolds for biological applications. One of the significant ways to improve the properties of these architectures is the incorporation of ...
  • Novel design methods for analog design automation tools 
    Berkol, Gönenç. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2015., 2015.)
    Improvements in fabrication processes have enabled designers to bene t from sub-micron devices, which have led to the integration of multibillion transistors. However, circuit complexity increases together with the silicon ...
  • Novel error - control coding techniques for molecular communication 
    Kışlal, Ahmet Oğuz. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    In molecular communication via diffusion, information molecules diffusing in the environment are subject to Brownian motion. Due to probabilistic propagation, the arrival of molecules at the receiver is spread in time, leading ...
  • 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 ...
  • Novel functional hydrogels and polymer coated magnetic nanoparticles with degradable linkers for biomedical applications 
    Aydın, Duygu. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    In this thesis, the design and fabrication of novel reactive interfaces such as hydrogels and polymer coated nanoparticles were investigated for applications related to the delivery of therapeutic agents. Randomly crosslinked ...
  • Novel hydrogels for wound care applications 
    Baş, Yağmur. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)
    Hydrogels are cross-linked, three-dimensional hydrophilic polymeric networks. They possess similarity in structure to the soft tissue in the body, thus have found a great number of applications as biomaterials. For wound ...
  • Novel methods for security mechanisms and key management techniques in wireless networks based on signcryption and hybrid cryptography 
    Yavuz, Attila Altay. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    Providing security in wireless communication networks is one of the most challenging problems in security systems. Broadcast nature of wireless networks make them more vulnerable to eavesdropping and active attacks when ...
  • Novel models for credit card fraud detection 
    Kültür, Yiğit. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    Financial institutions attach great importance to credit card fraud detection, as a natural consequence of the multi-billion dollar annual losses incurred due to credit card fraud. Rule based systems have been commonly ...
  • Novel monomeric and polymeric photoinitiators with TYPE II and ( TYPE I-OR-H-DONOR) side chains 
    Köylü, Fulya. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2015., 2015.)
    A recent trend in the effort to develop high performance photoinitiator (PI) systems for photopolymerization is to consider polymerizable or polymeric ones. These have some advantages such as high reactivity, low volatility ...
  • Novel polymer-dendron conjugate based micellar carriers for targeted drug delivery 
    Aksoy, Harun Utku. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2015., 2015.)
    Due to their hydrophobic nature, most of the chemotherapy drugs have poor solubility in water. To increase their solubility, solubilizing agents are necessary, which can often cause side effects. Conversely, instead of ...
  • Novel polymeric materials via reactive polymers 
    Cengiz, Nergiz. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    Novel synthetic strategies for fabrication of reactive polymers, multifunctional hydrogels and bio-functionalizable micro-patterned hydrogels are described. A set of highly efficient chemical reactions referred as ‘click’ ...
  • Novel positive and negative active inductor circuit designs 
    Özaydın, Ahmet Mustafa. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2022., 2022)
    Inductor is one of the main passive elements in electronics. It has a significant role in designs and are being used in electrical circuits widely. However, physical inductors have considerable drawbacks which limit their ...
  • Novel results on frequency estimation and statistical characterization of three spectral estimation techniques 
    Anarın, Emin. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1985., 1985.)
    The problem of detecting a sinusoidal signal in white noise and estimati on of its parameters is essentially a problem in signal processing such as radar, sonar, biomedical, etc. In this dissertation, various modern spectrum ...
  • Novel signal processing techniques for fiber optic distributed acoustic sensing 
    Ölçer, İbrahim. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    In this thesis, to reduce the effect of noise in phase-sensitive optical time domain based (φ-OTDR) distributed acoustic sensing (DAS) systems, two novel approaches are proposed and a real experimental φ-OTDR system is ...
  • Novel time-series based DDOS attack detection schemes for traditional networks and software defined networks 
    Fouladi, Ramin Fadaei. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2021., 2021.)
    Distributed Denial of Service (DDoS) attacks are always one of the most signifi cant threats for computer networks since they affect the user satisfaction by degrading the availability of on-line services. Although some ...
  • Novel two-photon absorbing dyes :|their possible use in photoactive applications 
    Şengül, Özlem. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    In this study, the linear and non-linear optical properties of two recently synthesized polythiophene based dyes, DTP1 and DTP2, were investigated. In the first part, a thorough conformational search was performed, the ...

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