Graduate School of Natural and Applied Sciences

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Recent Submissions

Clean energy transition in the Turkish power sector: A techno-economic analysis with a high-resolution power expansion model Kat, Bora (2023-06-01) The Turkish power sector achieved rapid growth after the 1990s in line with economic growth and beyond. However, domestic resources did not support this development and therefore resulted in a high dependency on imported f...
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...
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...
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...
Recycling photovoltaic modules within a circular economy approach and a snapshot for Türkiye Aşkın, Asmin; Kılkış, Şiir; Akınoğlu, Bülent Gültekin (2023-05-01) Solar energy has an important role for increasing renewable energy use and circularity options in the sector are increasing. This study analyses the advances in the scope of the Sustainable Development Goals that aim to cr...
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...
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...
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...
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...
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...
Evaluation of surface properties of roller compacted concrete pavements using 3d photogrammetry method Tan, Emine Bilge; Yaman, İsmail Özgür; Öztürk, Hande Işık; Department of Civil Engineering (2023-4-25) Owing to their cost-effectiveness and longevity, the popularity and the use of rollercompacted concrete (RCC) pavements have grown in Turkey both on urban and rural roads in recent years. Despite the vast amount of researc...
Modeling and identification of contact dynamics at shrink-fit holder-extension and extension-tool interfaces Altın, Mustafa Ünal; Özşahin, Orkun; Department of Mechanical Engineering (2023-4-25) Frequency response functions at the extension and tool tip for different holders, extension, and tool assembly can be obtained using experiments. But performing experiments for every combination requires so much effort and...
Hybrid and electromagnetic large bandwidth energy harvesters with interface circuit for 0.4-1.6 g acceleration range Yılmaz, Akın Mert; Külah, Haluk; Department of Electrical and Electronics Engineering (2023-4-25) Environmental energy sources such as vibration, heat and light can be converted to electrical energy by energy harvesters and stored in batteries and super-capacitors using interface circuits (IC). Depending on the size an...
Bias correction for non-extreme and extreme values for precipitation Körpınar, Ahmet; Kentel Erdoğan, Elçin; Department of Civil Engineering (2023-4-24) Regional climate models are crucial in climate change impact analysis. Short-term and long-term effects of climate change need to be investigated to plan necessary mitigation measures and to lower the impacts. Regional cli...
Laser and plasma surface treatments of PPS/CF thermoplastic composite laminates for primer adhesion Atlıoğlu, Merve; Kaynak, Cevdet; Department of Metallurgical and Materials Engineering (2023-4-24) After production and characterization of Poly(phenylene sulfide) / Carbon Fiber (PPS/CF), thermoplastic composite laminates, the main purpose of this study was, to evaluate effects of “laser” and atmospheric “plasma” surfa...
Profiling young learners based on their daily study hours in a supplementary e-learning platform Günay, Abdulkadir; Er, Erkan; Department of Computer Education and Instructional Technology (2023-4-24) Online learning platforms (OLPs) are widely used as supplementary tools in K-12 education. Integration methods of these platforms into traditional learning environments are diverse, and they impact how students engage and ...

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