Fen Bilimleri Enstitüsü: Recent submissions

  • An application aware utility based lifetime quantification framework for wireless sensor networks 
    Özgövde, Bahri Atay. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    In this work, we devise a framework for incorporating the application dependence into the lifetime measurement process of the wireless sensor networks, thereafter via extensive experiments, demonstrate the signi cance of ...
  • A flexible approach for context-aware service selection in agent-mediated e-commerce 
    Şensoy, Murat. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    In this dissertation, we examine the problem of service selection in an e‐commerce setting where consumer agents cooperate to identify providers that would satisfy their service needs the most. There are three major ...
  • Medium access control layer performance ıssues in wireless sensor networks 
    Demirkol, İlker Seyfettin. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    Wireless sensor networks (WSNs) present a promising technology for many applications providing an intelligent and remote observation of a destination. Among the various potential applications, there are health monitoring, ...
  • TDMA based wireless sensor network for military monitoring (MILMON) 
    Bekmezci, İlker. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    Wireless sensor network (WSN) is a new network family that enables to create smart environments. Although WSN has many application areas, military applications of WSN are very interesting. In this thesis, a new TDMA based ...
  • 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 ...
  • Vision based sign language recognition: modeling and recognizing isolated signs with manual and non-manual components 
    Aran, Oya. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    This thesis addresses the problem of vision based sign language recognition and focuses on three main tasks to design improved techniques that increase the perfor- mance of sign language recognition systems. We first attack ...
  • Hardware / software partitioning for custom instruction processors 
    Atasu, Kubilay. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    In this thesis, we describe an integer linear programming (ILP) based system called CHIPS for identifying custom instructions given the available data bandwidth and transfer latencies between the base processor and the ...
  • Content-centric and spectrum sharing heterogeneous wireless networks 
    Kafıloğlu, Sebahat Sinem. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2021., 2021.)
    The surging multimedia content demand has put wireless network systems under heavy energy consumption burden in an unprecedented manner. Besides, wireless net works are urged to the limits of service capacity due to the ...
  • Multicasting for all-optical multifiber networks 
    Köksal, Fatih. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    We propose to use a layered graph approach, which has been previously proposed for unicasting, to have a more general, realistic and flexible model of an all-optical multifiber network for multicasting. This new presentation ...
  • Deployment quality measures in surveillance wireless sensor networks 
    Onur, Ertan. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    Surveillance wireless sensor networks are deployed at border locations to detect unauthorized intrusions. For deterministic deployment of sensors, the quality of deployment can be determined sufficiently well by analysis ...
  • Optimization and orchestration in multi-tier edge computing 
    Baktır, Ahmet Cihat. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2021., 2021.)
    In addition to the efforts in the next-generation cellular networks and traditional network services, the demand for a novel set of services leveraged through smart devices and artificial intelligence (AI) techniques ...
  • Neural named entity recognition for morphologically rich languages 
    Güngör, Onur. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2021., 2021.)
    Named entity recognition (NER) is an important task in natural language pro cessing (NLP). Until the revival of neural network based models for NLP, NER taggers employed traditional machine learning approaches or finite-state ...
  • Fast high-dimensional temporal point processes with applications 
    Türkmen, Ali Caner. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)
    Large sets of continuous-time discrete event streams are often in the focus of seismology, neuroscience, finance, behavioral science among other scientific and engi neering disciplines. In this work, we explore a set of ...
  • Sequential Monte Carlo localization using bluetooth low-energy beacons 
    Daniş, Fahri Serhan. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2021., 2021.)
    We model the tracking of a Bluetooth Low-Energy (BLE) moving transceiver as a hidden Markov model, and filter the latent positions using sequential Monte Carlo. A novel aspect of our approach is the development of an ...
  • Quality of experience - driven dynamic adaptive streaming over HTTP 
    Özçelik, İhsan Mert. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2021., 2021.)
    Dynamic Adaptive Streaming över HTTP (DASH) became the pillax of mul timedia content delivery mechanisms in the last decade. Given fluctuating network conditions, over-the-top content platforms struggle with delivering a ...
  • Stress detection and management in daily life using wearable sensors 
    Can, Yekta Said. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)
    Stress has become an integral part of our modern society. Researchers investi gated ways to cope with it to alleviate its negative effects on human health, society and economy. At this point, widespread usage of smartphones, ...
  • Bayesian approaches for privacy preserving data sharing 
    Ermiş, Beyza. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)
    In this thesis, we focus on the data fusion problem where we have heterogeneous data which is collected from di↵erent sources and stored in the form of matrices and higher-order tensors and propose coupled matrix and tensor ...
  • Developing a comprehensive framework for sentiment analysis in Turkish 
    Aydın, Cem Rıfkı. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)
    In this thesis, we developed a comprehensive framework for sentiment analysis that takes its many aspects into account mainly for Turkish. We have also proposed several approaches specific to sentiment analysis in English ...
  • Optimization of next generation solar-powered radio access networks 
    Pamuklu, Turgay. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)
    Due to the incontrovertible effects of global warming, society grows its sustainabil ity awareness regularly, and governments start to change their energy policies to pro mote green energy sources. However, mobile network ...
  • A concurrent programming system with a flexible structure 
    Şıkoğlu, Tamer. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1984., 1984.)
    This dissertation describes the design and imp)ementation of a concurrent programming system called CPS/1100 which is a modelling language used in systems programming. Processor dedication and program trace capabilities ...

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