Browsing Fen Bilimleri Enstitüsü by Title

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  • Improving text categorization performance by combining feature selection methods 
    Özbilen, Ece. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    Even though the arrival of the machine learning methods in text categorization is one of the essential factors that improves the effectiveness of text categorization, high dimensionality is still a challenge for classification ...
  • Improving text classification performance with the analysis of lexical dependencies and class-based feature selection 
    Özgür, Levent. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    In this thesis, we present a comprehensive analysis of the feature extraction and feature selection techniques for the text classification problem in order to achieve more successful results using much smaller feature ...
  • Improving the error floor performance of LDPC codes 
    Sarıduman, Abdullah. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)
    Low-density parity-check codes (LDPC) have become one of the most popular error-correcting code families in recent years due to their high error correction performance and easy implementation. They became one of the biggest ...
  • Improving the performance of a communication via diffusion system considering molecule degradation in nanonetworking 
    Kılıç, Fatma Nur. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2015., 2015.)
    The interconnection between the nanoscale circuit components, which is referred to as nanonetworking, is a hot topic for nearly a decade. Among the various approaches studied in the literature, we apply communication via ...
  • Improving the performance of LoRaWAN IoT system 
    Yapar, Gökçer. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    One of the technologies developed in LPWAN according to the IoT concept is the LoRaWAN protocol. This protocol works together with LoRa modulation. So far, studies on this protocol included only uplink communication. ...
  • Improving the performance of software defect predictors with internal and external information sources 
    Turhan, Burak. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    In this dissertation, we make an analysis of software defect prediction problem from a data mining perspective, where software characteristics are represented with static code features and defect predictors are learned ...
  • Impulse radio ultra-wideband communication over free-space optical links 
    Davaslıoğlu, Kemal. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    A composite impulse radio ultra-wideband (IR-UWB) communication system is presented. The proposed system model aims to transmit UWB pulses over several kilometers through free-space optical (FSO) links and depending on the ...
  • In search of the axion particle with RF cavities in cast experiment at CERN 
    Özbozduman, Kaan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2021., 2021.)
    Axion is a pseudo scalar boson that is predicted to solve the strong CP problem and therefore cast light upon curious CP invariance of the strong nuclear interactions. It is also a promising candidate to be the building ...
  • In silico analysis of neutral sphingomyelinase 2 
    Yağcı, Zarife Begüm. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    Neutral sphingomyelinase 2 (nSMase2) is an important sphingolipid metabolism enzyme that generates ceramide through the hydrolysis of sphingomyelin (SM) present in the plasma membrane. It has been suggested as a therapeutic ...
  • In silico determination of orthosteric and allosteric inhibitors of sphingosine kinase 1 (SK1) 
    Bayraktar, Özge. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    The sphingosine kinase 1 (SK1)/sphingosine-1-phosphate (S1P) signaling pathway is a crucial target for numerous human diseases from cancer to cardiovascular diseases. Even though the discovery of SK1 inhibitors has been ...
  • In silico determination of protein complexes in yeast 
    Karabıyık, Hilal Candan. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    In this thesis, the protein complexes in an interaction network of 20,487 interactions between 4,944 proteins were determined by the integration of different biological datasets. We recruit different data sources that ...
  • In situ image correlation measurement of grain-level deformation fields in twinning magnesium 
    Telemez, M. Ayça. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2013., 2013.)
    In this study, in situ digital image correlation (DIC) has been utilized for full-field strain measurements in a hexagonal close-packed (HCP) AZ31 magnesium alloy at both macroscopic and microscopic (crystallite) length ...
  • In vitro and in vivo characterization of dmHexDC function 
    Erkol, Emir. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2019.)
    Glycosylation of molecules is crucial for a wide variety of cellular processes ranging from cell-cell communication to cell differentiation and is altered in many neurodevelopmental disorders. β-hexosaminidases process ...
  • In vivo characterization of the OR101-1 gene proximal promoter region in zebrafish 
    Kazcı, Yusuf E.. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2015., 2015.)
    In vertebrates, each olfactory sensory neuron (OSN) of the nose expresses only a single allele of a single molecular chemoreceptor gene from a large genomic repertoire. This monogenic mode of olfactory receptor (OR) ...
  • In vivo studies of ASC specks as antigen delivery vehicles 
    Yaşa, Seda. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    ASC is a 22 kDa adapter protein which is an essential component of the NLRP3, NLRC4 and AIM2 in ammasome complexes. ASC has critical functions in in ammatory and pyroptotic signaling pathways via activating caspase-1. In ...
  • In-situ partially penetrating variable head tests 
    Kılanç, Burak. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1996., 1996.)
    Variable head tests (slug tests) represent one of the in-situ permeability tests that can be performed to characterise the hydraulic properties of porous media. Groundwater quality remediation projects and the associated ...
  • In-soil strength and behaviour of geosynthetic reinforcements 
    Yardımcı, Tolga. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2022., 2022)
    In this study, in-soil tensile strength and behaviour of various geosynthetic re inforcements is investigated with the help of custom designed and developed in-soil tensile test apparatus in the laboratory. The proposed ...
  • Incidence algebras and coalgebras 
    Sütlü, Serkan. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    The main objective of this thesis is to study incidence coalgebras and incidence Hopf algebras. To this end, we first introduced algebras and coalgebras in a unified manner and investigated the the duality between them. ...
  • Increasing accessiblity of web content via semantic renarration 
    Güder, Emrah. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    Much of the content on the Web is not accessible to a large portion of the global population due to barriers such as language, literacy levels, physical impairments, expertise, etc. Attempts to make content more accessible ...
  • Increasing on time deliveries of tea based products by using type-2 service level and analyzing impacts of information sharing in food sector 
    Sarı, Mehmet Emre. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    The aim of this thesis is two fold, the first one is to develop an inventory control strategy for the most valuable products of a food company to improve customer service by using type-2 service level. The second is to ...

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