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Graduate School of Natural and Applied Sciences, Thesis
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Public Transportation in Istanbul After Pandemic: Impacts, Recovery & Future Resilience
Aktaş, Bersu; Babalık, Ela; Department of City Planning (2023-5-29)
Public transportation has been the mode of transport that was hit hardest by COVID-19. The impact of the pandemic on urban transportation has raised concerns that public transportation was losing ground and that this would...
Designing computationally light algorithms for concurrent real-time attitude estimation and sensor calibration
Benli, Doğukan; Söken, Halil Ersin; Department of Aerospace Engineering (2023-5-23)
Computer processors’ computational power and efficiency continue to improve each year. This improvement enables the usage of less power for computing or more complex models for embedded systems, especially in the aerospace...
OPTIMIZATION OF PHOSPHORUS EMITTER USING POCl3 DIFFUSION FOR PERC CELLS
Keçeci, Ahmet Emin; Turan, Raşit; Yerci, Selçuk; Department of Micro and Nanotechnology (2023-5-11)
The active dopant profile and the enhanced passivation of the emitter are keys to improving passivated emitter and rear contact (PERC) solar cell efficiency. PERC cells evolved from the standard Al-BSF cells that suffered ...
Distributed Nonlinear Model Predictive Formation Control of Quadcopter Type UAVs in Cluttered and Dynamic Environments
Satır, Muhlis Sami; Ankaralı, Mustafa Mert; Şahin, Erol; Department of Electrical and Electronics Engineering (2023-5-10)
Unmanned aerial vehicles (UAVs) have gained widespread use in various applications, including surveillance, inspection, and delivery. One important aspect in the operation of UAVs is the ability to fly in formation, where ...
MULTI-CRITERIA EVALUATION AND RANKING OF CIRCULAR ECONOMY WATER MANAGEMENT ALTERNATIVES FOR PORSUK BASIN
MORADI, NAZANIN; KÖKSAL, GÜLSER; ALP, EMRE; Department of Industrial Engineering (2023-5-8)
Rapid urbanization and the overall expansion of the world's population have led to a greater demand for natural resources, particularly water. While most of the earth is covered in water, only a small portion is freshwater...
Effect of Flow Intensity and Collars on Scour Depths Around Bridge Abutments
Gökmener, Serkan; Altan Sakarya, Ayşe Burcu; Göğüş, Mustafa; Department of Civil Engineering (2023-5-05)
In this experimental study, the temporal development of the local scour was studied around semi-circular end and rectangular bridge abutments under unsteady-state clear-water flow conditions in a rectangular sediment chann...
Monitoring and analyzing the sustainability performance of a renewable energy investment with a case study-Tugra HEPP
Kalemci, İsmail; Akınoğlu, Bülent Gültekin; Tosun, Kürşad; Department of Earth System Science (2023-5-05)
To reach the sustainable development idea, the energy usage and services are in a critical position that most of the announced "Sustainable Development Goals" (SDGs) are somehow related to energy services, especially renew...
Few-shot segmentation by enhanced ensemble of base and meta predictions
Kayabaşı, Alper; Ulusoy, İlkay; Department of Electrical and Electronics Engineering (2023-4-28)
Supervised learning approaches assume that there is a large amount of data available with labels. Since data annotation is a costly and time-consuming task, this assumption loses its validity when there are financial or ti...
ADVANCED METHODS FOR A NOVEL FUSED FILAMENT FABRICATION PROCESS ACCOMMODATING VARIABLE BEAD WIDTH
Gharehpapagh, Bahar; Dölen, Melik; Yaman, Ulaş; Department of Mechanical Engineering (2023-4-28)
Material Extrusion Additive Manufacturing (MEAM) has revolutionized the production of complex designs while minimizing the amount of effort required due to its simple production pipeline. However, MEAM naturally comes with...
“INVESTIGATING THE POTENTIAL OF GAME ENGINES IN SPACE EVALUATION REGARDING AUTISM SPECTRUM DISORDER (ASD): AN EXPLORATION OF TECHNOLOGY IN DESIGN
Amouei, Mohammadhossein; Erkılıç, Mualla; Department of Architecture (2023-4-27)
In recent years, researchers in the field of architecture have recognized the importance of creating inclusive and supportive built environments for individuals with Autism Spectrum Disorder (ASD). ASD is a neurodevelopmen...
A REPERTOIRE FOR EXAMINING POTENTIAL OF HYBRIDITY IN URBAN DEVELOPMENT AREAS
Atay, Gültekin Doruk; Aral, Hacer Ela; Department of Architecture (2023-4-27)
Urban space can be viewed as a dynamic system of interconnections, a complex system of flows and actions. The city is genuinely heterogeneous, conflicting, and ambiguous. In this context, hybridity characterizes difference...
Production of instant powder green tea enriched with herbal mixtures
Çelik , Merve; Öztop, Halil Mecit; Özcan Kabasakal, Süreyya; Department of Food Engineering (2023-4-27)
Black tea is the most consumed beverage in Türkiye following water. Due to the benefits of green tea for human health, the consumption of green tea is also gradually increasing. In addition to the diverse range of tea vari...
Computational modeling of hardening concrete at mesoscale
Yılmaz, Çağlar; Göktepe, Serdar; Department of Civil Engineering (2023-4-27)
Concrete can be conceived as a composite material made up of cement, fine and coarse aggregates, water, and admixtures. The strength gain mechanism of concrete is based on the exothermic chemical reactions between the ceme...
Resource allocation in the finite blocklength regime in 5g
Kartal, Özkan Tuğberk; Uysal, Elif; Kaya, Onur; Department of Electrical and Electronics Engineering (2023-4-26)
With the enhancements in 5G Technology, URLLC (Ultra-reliable low-latency communication) Systems have become more and more important. Related to URLLC Systems with known packet arrival processes and channel conditions, man...
Damping from vibration records of tall buildings
Gümüştepe, Anıl Can; Çelik, Ozan Cem; Department of Civil Engineering (2023-4-26)
With the release of the new Turkish Building Earthquake Code, real-time structural response monitoring of tall buildings became mandatory. As part of two research projects undertaken at Middle East Technical University and...
Formation model of the Ulutaş skarn system (Erzurum, Northeastern Anatolia)
Kesim, İsmail Batuhan; İmer, Ali; Department of Geological Engineering (2023-4-26)
The Ulutaş skarn deposit lies within the Eastern Pontides magmatic belt. The study area consists of a Paleozoic metamorphic basement cross-cut and overlain by volcanic, volcano-sedimentary, and plutonic lithologies of the ...
The distribution of the EU-funded municipal projects aimed at contributing to the sustainable development goals across the provinces in Türkiye: a spatial clustering analysis
Parlak, Gülşen Ayşen; Severcan, Yücel Can; Küçükpehlivan, Tuncay; Department of Geodetic and Geographical Information Technologies (2023-4-26)
In the 2030 Agenda for Sustainable Development framework, developed countries assist developing or less developed countries in achieving global goals. The European Union (EU) is one of the most important donors to Türkiye,...
Evaluation of recent metaheuristic search rechniques in optimum design of steel structures
Kalaycı, Ahmet Eray; Dicleli, Murat; Hasançebi, Oğuzhan; Department of Engineering Sciences (2023-4-26)
Meta-heuristic search techniques have become popular in the last decade due to advantages, such as preventing local optimum solutions and producing discrete solutions to structural systems. The main purpose of the optimiza...
Investigation Of Effect Of Spacing Between Lateral Square Bars On Channel Bed Resistance
Özgünlü, Mert; Aydın, İsmail; Department of Civil Engineering (2023-4-25)
Irregularities of solid surfaces affect the friction between the surface and the flowing fluid. Surface irregularities are generally defined as 'roughness', which implies an increase in bed resistance and additional dissip...
Determining the thermal conductivity of earth plaster samples with mortar mixes suitable for African architecture
Aluma, Benard; Elias Özkan, Soofia Tahira; Department of Building Science in Architecture (2023-4-25)
Earth has been used as a building material in African architecture for millenniums. Building with earth in combination with other indigenous materials as additives has various benefits, including affordability, availabilit...
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