Browsing Fen Bilimleri Enstitüsü by Title

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  • User selection and density based decision method for cooperative spectrum sensing in cognitive radio networks 
    Çimentepe, Gonca Eryiğit. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    Radio spectrum is one of the scarce source and its importance is increasing in recent years due to rapidly developing new technologies. Today's wireless networks use fixed spectrum assignment policy which causes inefficient ...
  • User, device, orientation and position independent human acitivity recognition on smart phones 
    Üstev, Yunus Emre. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2015., 2015.)
    Smart phones equipped with a rich set of sensors are explored as alternative platforms for human activity recognition in the ubiquitous computing domain. However, there exist challenges that should be tackled before the ...
  • Using crosslingual information for keyword search in low resource languages 
    Yusuf, Bolaji. (Thesis (M.A.) - Bogazici University. Institute for Graduate Studies in the Social Sciences, 2018., 2018.)
    Keyword search (KWS) is a subtask of spoken content retrieval that aims to solve the problem of locating a written query within a large, unlabeled spoken doc ument. The dominant approach to KWS involves transcribing the ...
  • Using Dec-POMDP algorithms to solve multi-agent decision problems in robot soccer 
    Aşık, Okan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)
    Decentralized Partially Observable Markov Decision Process (Dec-POMDP) is a recent mathematical framework which has been used to model multi-agent coordination and decision making. However, its real life applications are ...
  • Using genetic algorithms with lexical chains for automatic text summarization 
    Berker, Mine. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    With the rapid increase in the amount of online text information, it became more important to have tools that would help users distinguish the important content. Automatic text summarization attempts to address this problem ...
  • Using lagrangian relaxation and column generation for data clustering 
    Ayrancı, Mehmet. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    Clustering is the organization of patterns, which are usually represented as vec- tors in multidimensional spaces, into a given number of groups with similar character- istics. It can be formulated as a mathematical ...
  • Using machine learning approaches to construct correlations for cohesive soils usins using in-situ and laboratory data 
    Mbarak, Waild Khalid. (Thesis (M.A.) - Bogazici University. Institute for Graduate Studies in the Social Sciences, 2017., 2017.)
    In a world where the sizes of construction sites are ever increasing and project deadlines ever reducing, the geotechnical engineer no longer has the time to properly conduct the necessary tests on the soil so as to come ...
  • Using machine learning to improve automated test generation 
    Köroğlu, Yavuz. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2022., 2022)
    Underestimating the value of software testing had catastrophic results in recent history. Automated Test Generation (ATG) is an approach that aims to minimize the manual effort required for testing. This thesis aims to ...
  • Using Pade approximation in system modelling and simulation with state-space representation 
    Ceylan, Ülkü (Kolağasıoğlu). (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1992., 1992.)
    Today, in a variety of application the statistical characteristics of a system response is important in order for analysis and model the systems. In this study, we mainly made an investigation to the system analyzing and ...
  • Using polynomial approximations to discover qualitative models 
    Gerçeker, Reha Kamil. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    The set of ordinary differential equations (ODE) of a physical system determines the precise numerical behavior that will be exhibited in the future. Abstracting an ODE into a qualitative differential equation (QDE) system ...
  • Using reviews on the web to predict box office success with machine learning methods 
    Sivrikaya, Burak. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    Movie production is a serious undertaking that requires a significant amount of investment. The success of a movie, i.e., positive return on investment, can only be realized with a good performance at the box-office well after ...
  • Using sonar ears for robotic navigation 
    Erdem, Mustafa. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    This thesis presents work on previously developed hardware module for in-air ultrasound measurements and analysis. Redesigned hardware and firmware enable real-time ultrasound echo measurements which are then transmitted ...
  • Using transformer networks for detection and normalization of named entities in biomedical texts 
    Pala, İlkay Ramazan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2021., 2021.)
    The increasing difficulty of retrieving relevant information from rapidly growing literature has raised the interest for natural language processing (NLP) systems in the biomedical domain. In many of these systems, detection ...
  • Utilization of carbon dioxide and methane via catalytic reforming reactions 
    Aydınoğlu, Şeyma Özkara. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    The overall purpose of this research study was to investigate new catalysts to produce synthesis gas via CO2 reforming of methane under optimized reaction conditions. The thesis consists of four parts. In the first part ...
  • Utilization of microalgae in green context :|adsorptive removal of ionic contaminants from aqueous media and production of microalgal bioplastics 
    Özgümüş, Beste. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    Microalgae are known for their remarkable growth rates and adaptation capa bilities. In this study, microalgae were used as environmentally friendly materials for two different applications. The first part is focused on ...
  • Utilization of pneumatic artificial muscles on a direct shear test setup 
    Yıldız, Anıl. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)
    A pneumatic artificial muscles, which is basically a type of actuator that contracts under pressure while exerting a tensional force in the axial direction, possesses several advantages, such as high power/weight ratio, ...
  • Utilizing out-of-domain data through languaghe modeling based vocabulary saturation for English-Turkish machine translation 
    Aydın, Burak. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    The training data size is of utmost importance for statistical machine translation (SMT), since it a ects the training time, model size, decoding speed, as well as the system's overall success. One of the challenges for ...
  • Utilizing weakly-supervised learning for hashtag segmentation and named entity disambiguation 
    Çelebi, Arda. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)
    Today’s high-performing machine learning algorithms learn to predict by the supervision of large amounts of human-labeled data. However, the labeling process is costly in terms of time and effort. In this thesis, we design ...
  • Utilizing wWiMAX Mesh model for efficient IPTV transmission 
    Uluğ, Seçkin. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    In this thesis, an alternative model is proposed for the distribution of IPTV in wireless environment. Considering the data rate requirements of the IPTV service and challenges in distribution of the service due to wireless ...
  • Uzayda yer tutan magnetik yükler ve bir hadron modeli 
    Beker, Haluk. (Thesis (Assoc. Prof.) - Bogazici University. Institute of Sciences and Engineering, 1977., 1977.)

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