Graduate School of Natural and Applied Sciences

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Recent Submissions

Urban emissions and land use efficiency scenarios for avoiding increments of global warming Kılkış, Şiir (2024-10-30) Urban areas have key roles in climate mitigation, including increasing renewable energy penetration in smart energy systems. The potential of urban areas in limiting global warming, however, is not quantified. This researc...
HARDWARE ACCELERATED PACKET PARSERS AND DEPARSERS FOR HIGH-THROUGHPUT FLOW CLASSIFICATION IN COMPUTER NETWORKS: DESIGN, IMPLEMENTATION AND EVALUATION Demir, Omer Bayram; Schmidt, Şenan Ece; Department of Electrical and Electronics Engineering (2024-9-12) Handling the increasing data rates and diverse traffic patterns of 5G networks requires high-performance packet processing. Packet parsers play a crucial role in identifying and parsing relevant information from the packet...
K-existentially Closed Groups Demirci, Caner Doğuş; Kuzucuoğlu, Mahmut; Department of Mathematics (2024-9-3) For an infinite cardinal κ, a group G is called κ-existentially closed if for every system Σ containing less than κ equations and inequations with constants from G where Σ can be solved in an overgroup H of G, there exists...
A new energy-economy-environment modeling framework: Insights from decarbonization of the Turkish power Sector towards net-zero Emission targets Kat, Bora; Şahin, Ü.; Teimourzadeh, S.; Tör, O.B.; Voyvoda, Ebru; Yeldan, A.E. (2024-09-01) The power sector plays a crucial role towards decarbonization for many economies, especially in line with the net-zero targets to limit global warming to 1.5 °C. Technical constraints intrinsic to the sector, penetration o...
Integration of liquid crystals into microfluidic sensors Özşahin Işılak, Ayşe Nurcan; Büküşoğlu, Emre; Department of Chemical Engineering (2024-9) Liquid crystals (LCs) are the oily state of liquid matter that possess anisotropy and unique optical properties. The LC interfaces, which are known for their multifunctional responsiveness, are applied in fundamental and a...
A holistic framework for the evaluation of circular water economy models at watershed scale through water-energy-food-ecosystem nexus approach Yapan, Bilge İrem; Alp, Emre; Köksal, Gülser; Department of Environmental Engineering (2024-9) Agriculture, industry, energy production and urban sectors have a great impact on water resources. Management of these sectors independent of each other can create unsustainable strategies. The nexus approach that includes...
On special linear systems on real trigonal curves Akyar, Turgay; Kişisel, Ali Ulaş Özgür; Department of Mathematics (2024-8-29) In this thesis we examine some of the topological properties of Brill-Noether varieties associated to real trigonal curves. More precisely, we aim to count the connected components of the real locus of the varieties parame...
Contributions of E3 ubiquitin-protein ligase TRIM33 to CXXC5-mediated gene expressions Ayten, Hazal; Muyan, Mesut; Department of Molecular Biology and Genetics (2024-8-27) 17β-estradiol (E2), the main circulating estrogen hormone, plays important roles in regulating many physiological and pathophysiological events in varying tissues including the breast tissue where it acts as a mitogenic fa...
Homological algebra for minimal Euler characteristics for certain manifolds Özdemir, Muhammed Erkam; Pamuk, Semra; Department of Mathematics (2024-8-27) For given group G one of the open problems in algebraic topology is determining the minimal Euler characteristics of a manifold M which has the fundamental group G. If M is 2n-dimensional manifold and has (n − 1)-connect...
Test and evaluation of jammer allocation algorithms for anti-drone systems: an agent-based simulation approach Baraklı, Ahmet Burak; Oğuztüzün, Mehmet Halit S.; Topçu, Okan; Department of Computer Engineering (2024-8-23) The increasing use of unmanned aerial vehicles (UAVs) raised safety concerns that require effective anti-drone systems. This thesis intends to improve these systems by designing and implementing a simulation environment fo...
Designing multi-component oxides as air cathode for rechargeable aqueous Zn-air batteries Özgür, Çağla; Toparlı, Çiğdem; Department of Metallurgical and Materials Engineering (2024-8-16) To address environmental pollution concerns and meet the increasing energy demand, the development of renewable energy systems and cost-effective electrochemical energy storage solutions is essential. Rechargeable zinc-air...
Conceptual design of a tunneling relay for low power wide area networks Gençay, Ömer; Uysal, Elif; Department of Electrical and Electronics Engineering (2024-8-16) This study addresses the conceptual design of a tunneling relay device intended to overcome the range limitations of traditional Long Range Wide Area Network (LPWAN) end devices and gateways. The primary objective of the r...
HYDRODYNAMIC SIMULATIONS ON A GOLD NANO ELLIPSOID TEPE, Hüseyin Umut; BEK, Alpan; YERCİ, Selçuk; Department of Micro and Nanotechnology (2024-8-16) A hydrodynamic model is used to explore the nonlinear optical properties of a plasmonic gold nano ellipsoid. This simulation study reveals spherical harmonics in the near-field and vector spherical harmonics in the far-fie...
PREDICTION OF TEMPORAL DISSOLVED OXYGEN CONCENTRATIONS IN A LAKE USING REMOTE SENSING AND MACHINE LEARNING Ünalan, Utku Berkalp; Aksoy, Ayşegül; Onur, Yüzügüllü; Department of Environmental Engineering (2024-8-14) Dissolved Oxygen (DO) levels are vital for aquatic life, especially under the stress of climate change, making their monitoring essential for effective lake management. However, local measurements are often costly and time...
DETECTION OF CORROSION COVER PERCENTAGES IN STRUCTURAL MEMBERS USING DEEP LEARNING AND COMPUTER VISION Uzuncan, Hüseyin Dağlar; Caner, Alp; Department of Civil Engineering (2024-8-8) Visual inspection conducted by inspectors has a great role in today’s structural evaluations. However, evaluations may differ through inspectors. Thus, to standardize the assessment of corrosion, this research tried to cre...
Application of the quantal diffusion approach based on the stochastic mean-field theory Kayaalp, Arda; Yılmaz, Osman; Ayık, Şakir; Department of Physics (2024-8-06) This thesis investigates the application of the quantal diffusion approach based on Stochastic Mean-Field (SMF) theory to low-energy heavy-ion collisions, with a focus on multinucleon transfer (MNT) reactions. The study sp...
Exploiting spatial redundancy in feature maps to accelerate convolutional neural networks Ulaş, Muhammed Yasin; Akbaş, Emre; Yarman Vural, Fatoş Tunay; Department of Computer Engineering (2024-8-06) The field of computer vision has changed dramatically with the advent of convolutional neural networks (CNNs). Since then, they have achieved superior performance than previous methods in various tasks, such as image class...
Ductile failure analysis during backward flow forming processes Vural, Hande; Yalçınkaya, Tuncay; Department of Aerospace Engineering (2024-8-05) Flow forming, also known as tube spinning, is an advanced metal forming process that produces thin-walled, high-precision cylindrical components. This process involves incrementally thinning the material using specially de...
Squeezing functions of n-connected domains Can, Aslı; Yazıcı, Özcan; Department of Mathematics (2024-8-2) The explicit formula of the squeezing function for the annulus firstly was given by Ng, Tang and Tsai (2021). In the paper of them, they used Loewner differential equations to prove the explicit formula. Later, Gumenyuk an...
Life cycle assessment of furniture products: A case study of a chair Dingil, Beste; Yetiş, Ülkü; Uzal, Niğmet; Department of Earth System Science (2024-8-02) Furniture products have long been integral to human daily life, serving not only functional needs but also enhancing comfort and aesthetic appeal in various living spaces. However, due to the harmful effects of furniture p...

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