Graduate School of Natural and Applied Sciences, Thesis

Browse
Search within this collection:

Filters

Entity Type
Thesis (22670)

Has File(s)
Yes (18011)
No (4659)

Author
Aydın, Özlem (5)
Kocakuşak, Oktay (4)
Korkmaz, Ozan (4)
Yılmaz, Emre (4)
Ünver, Alper (4)

Subject
Engineering and Technology (384)
Electrical engineering. (252)
Mechanical engineering. (236)
Architecture. (196)
Civil engineering. (163)

Date Issued
1960 - 1979 (2467)
1980 - 1999 (6618)
2000 - 2019 (12727)
2020 - 2021 (852)

Item Type
Master Thesis (19118)
Ph.D. Thesis (3528)
Thesis (25)

Recent Submissions

STABILITY AND FAILURE ANALYSIS OF EXCAVATIONS USED FOR UNDERGROUND MINING OF BATI RAMAN OIL FIELD
Emci, Mehmet Emircan; Öztürk, Hasan; Department of Mining Engineering (2021-11-8)
Batı Raman holds the Turkey's proven largest oil reserve (1.85 billion barrels). The reserve is located at an average depth of 1450 m within a fractured limestone. This heavy oil has a 12° API gravity and a viscosity of 20...
Investigation of the effects of uncertainties of inflow hydrograph and dam breach geometry on outflow hydrograph
Gödek, Neslihan Pınar; Yanmaz, Ali Melih; Çalamak, Melih; Department of Civil Engineering (2021-11)
Precise breach outflow hydrograph is crucial for the accurate determination of the flood damage and cost at the downstream region. Precise flood inundation modeling is based on the use of a realistic breach outflow hydrogr...
DELAYED DETACHED-EDDY SIMULATION BASED PREDICTIONS OF BOUNDARY LAYER TRANSITION AND CAVITY FLOW NOISE
Yalçın, Özgür; Özyörük, Yusuf; Department of Aerospace Engineering (2021-11-1)
This dissertation investigates the boundary layer transition as well as the cavity flow noise prediction capabilities of a high-order in-house solver using various Delayed Detached-Eddy Simulation (DDES) frameworks. Before...
Improvement of silicon heterojunction solar cell performance with new surface structure and wide band gap carrier selective layers
Dönerçark, Ergi; Turan, Raşit; Yerci, Selçuk; Department of Micro and Nanotechnology (2021-10-15)
The photovoltaic (PV) industry is dominated by silicon-based solar cells owing to the abundance of silicon and its full-fledged technology. The main road for the PV industry points out to enhance the conversion efficiency ...
AN ANALYSIS ON THE EFFECT OF DYNAMIC RANGE ON OBJECT DETECTION WITH DEEP NEURAL NETWORKS
Koçdemir, İsmail Hakkı; Kalkan, Sinan; Alatan, Abdullah Aydın; Department of Computer Engineering (2021-10-8)
An important problem in computer vision, particularly in object detection, is being able to perceive objects even under challenging illumination conditions. Being robust to such conditions is especially important in applic...
AN INTEGRATED COMPUTATIONAL FRAMEWORK FOR NATURAL VENTILATION AND AIRBORNE CONTAMINANT DISPERSION ANALYSIS IN ARCHITECTURAL DESIGN
Abbas, Günsu Merin; Gürsel Dino, İpek; Department of Architecture (2021-10-8)
Over the last four decades, the negative impact of the building industry and the growing environmental crisis have led architects to develop sustainable design strategies for a better-performing built environment. Building...
Quantum Search in Sets with Prior Knowledge
Çalıkyılmaz, Umut; Turgut, Sadi; Department of Physics (2021-10-7)
Quantum search algorithm revolutionized the field by reducing the complexity significantly for the search problem. However, by not being able to decrease the complexity to logarithmic scales, this algorithm still needs a s...
Design, analysis and experimental study of a novel side thorax impactor to be used in pedestrian protection tests for flat front vehicles
Saraç Karadeniz, Sevgi; Gökler, Mustafa İlhan; Department of Mechanical Engineering (2021-10)
Pedestrian protection is crucial and the vehicle manufacturers put more and more effort to make vehicles safer for pedestrians in case of pedestrian involved accidents. Injuries and fatalities are very frequent and severe ...
BROADBAND HIGH EFFICIENCY RF POWER AMPLIFIER DESIGN BASED ON MODIFIED CLASS-J APPROACH WITH APPLICATIONS USING GAN HEMT TECHNOLOGY
Koç, Murat; Demir, Şimşek; Department of Electrical and Electronics Engineering (2021-9-29)
RF power amplifiers have been the essential elements of any transmit/receive block. Especially in the transmit chain, some applications require high RF power, such as radar, jammer, telecommunication signals targeting a wi...
PREPARATION OF MULTILAYER CAPSULES CONTAINING DODECAHYDRO-CLOSO-DODECABORATE LOADED POLYMER MICELLES
Aydemir, Umut; Erel Göktepe, İrem; Akdağ, Akın; Department of Biochemistry (2021-9-24)
Boron Neutron Capture Therapy (BNCT) is a non-invasive radiotherapy technique which is based on delivery of non-radioactive 10B compounds to cancer cells and irradiation of the tumour tissues with low energy thermal neutro...
ALL SIC TRACTION CONVERTER FOR LIGHT RAIL TRANSPORTATION SYSTEMS: DESIGN METHODOLOGY AND DEVELOPMENT OF A 500 - 900 VDC, 165 KVA PROTOTYPE
YILDIRIM, Doğan; Ermiş, Muammer; Department of Electrical and Electronics Engineering (2021-9-24)
Design methodology and development of a 165 kVA, all-silicon carbide (SiC) traction converter for new generation light rail transportation systems (LRTS) have been carried out in this thesis. Electrical, mechanical, and th...
ESTIMATION OF STATOR RESISTANCE OF INDUCTION MOTOR USING INNOVATION BASED ADAPTIVE EXTENDED KALMAN FILTER
Yırtar, Mehmet Zeki; Bostancı Özkan, Emine; Ertan, Hulusi Bülent; Department of Electrical and Electronics Engineering (2021-9-24)
In the industry, induction motors are widely utilized due to their low cost and low maintenance requirements. To get better performance from the motor, vector control (FOC) is introduced in the last decades. In this thesis...
REAL TIME CALCULATION OF SHEM ANGLES BY METAHEURISTIC ALGORITHMS FOR VARIABLE FREQUENCY MOTOR DRIVES
NALÇACI, Gamze; ERMİŞ, Muammer; ÇADIRCI, Işık; Department of Electrical and Electronics Engineering (2021-9-23)
Harris hawks optimization (HHO) has been used to optimize a voltage source inverter's selective harmonic elimination method (SHEM) for light rail transportation. The primary goal of SHEM's pulse-width modulation strategy i...
Beamforming Design for Network Multiple-Input Multiple-Output (MIMO) Systems with Multiple Cooperating Base Stations
Kadan, Fehmi Emre; Yılmaz, Ali Özgür; Department of Electrical and Electronics Engineering (2021-9-15)
New generation cellular systems are required to support high data rates. The performance of conventional systems with a single central base station is limited by inter-cell interference. Furthermore, the network densities ...
INVESTIGATION OF THE PERMEABILITY OF THE CELL MEMBRANE FOR DIFFERENT CRYOPROTECTANT AGENTS IN A CONTINUOUS THERMO-FLUIDIC MICRO-CHANNEL SYSTEM
Hatiboğlu, Anıl; Külah, Haluk; Önel, Selis; Department of Micro and Nanotechnology (2021-9-13)
Modeling cell membrane permeability in different solutions is a critical requirement in controlling the response of cells during preconcentration processes in biotechnological applications, such as drug delivery, fluoresce...
Nonlinearities in quantum correlations of two time-like separated measurements
Gharib Masouleh, Hamideh; Turgut, Sadi; Department of Physics (2021-9-10)
When two time-like separated measurements are done on an observable with 3 or more eigenvalues, such as angular momentum of an spin-1 particle, the result of the measurements correlation is nonlinear in terms of the first ...
The effect of using game-based learning activities in algebra on seventh-grade students’ algebra achievement, attitude towards mathematics and opinions about game-based learning activities
Başkahya, Zeynep Işılay; İşler Baykal, Işıl; Department of Mathematics Education (2021-9-10)
The purpose of the present study was to investigate the effect of using game-based learning activities in algebra on seventh-grade students' algebra achievement, attitudes towards mathematics, and opinions about game-based...
Energy Efficient Scheduling in Flow-shop and Parallel Machine Robotic Cells
Aydoğan, Çiya; Gürel, Sinan; Department of Industrial Engineering (2021-9-10)
Robotic cell scheduling studies mostly focus on increasing the throughput of the cell. Therefore, those studies consider cycle time or makespan minimization objectives. However, energy-efficient and environmentally sensiti...
SYNTHESIS OF NOVEL MATERIALS FOR HIGH PERFORMANCE POLYMERIC MEMBRANE APPLICATIONS
TUL MUNNA, SADIA; Akdağ, Akın; Çulfaz Emecen, Pınar Zeynep; Department of Polymer Science and Technology (2021-9-10)
The polymeric membranes for antimicrobial applications are in high demand nowadays, since the bacteria had developed the resistance against the antibiotics. The membrane technology could become an efficient tool to cope wi...
AN EXPERIMENTAL INVESTIGATION OF POSSIBLE PRODUCTION MECHANISMS OF HYDRATE FORMATION
Engüçlü, Hasan Hüseyin; Parlaktuna, Mahmut; Department of Petroleum and Natural Gas Engineering (2021-9-10)
In this study, temperature, pressure and mole values of methane hydrate formation and dissociation are analyzed using different production methods under laboratory conditions. During the experiments, a cylindrical high-pre...
Citation Formats