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Graduate School of Natural and Applied Sciences, Thesis
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Frequency Response Function Based Modal Updating of Aerospace Structures
Genç, Cem; Çalışkan, Mehmet; Department of Mechanical Engineering (2024-2-16)
This thesis explores finite element updating methods based on frequency response functions (FRFs), comparing classical modal approaches with newer techniques like Amplitude Residue (AR) or mostly called Response Function M...
The Catalysing Role of Interfaces, in the Ongoing Creation of Space at Different Urban Scales
Atak Akbulut, Hazal; Ataöv Demirkan, Anlı; Aykaç Leıdholm, Pınar; Department of City and Regional Planning (2024-2-12)
The pursuit of rigid order and control in urban planning has led to the fragmentation of urban areas and the deterioration of the interrelation among system components that interact in an integrated way. By prioritizing pi...
WHO LEADS THE WAY? BUYER VS. SUPPLIER INITIATIVES IN SUPPLY CHAIN CARBON FOOTPRINT REDUCTION
Elif, Kuşçu; Karaer, Özgen; Tan, Tarkan; Department of Industrial Engineering (2024-2-6)
We study two supply chain models: (i) Buyer-Led Supplier Development and (ii) Supplier-Led Supplier Development, which are consisting of a buyer and a supplier. We analyze which player should initiate the carbon footprint ...
The effects of service design on super app brand perception and user experience
Şimşekler, Sümeyye; Pedgley, Owaın Francıs; Yekta, Bakırlıoğlu; Department of Industrial Design (2024-1-27)
This study aims to investigate the effects of service design elements (user interface, payment, logistics, return process, and customer support services) on super apps brand perception and user experiences by also consider...
DETERMINATION OF PROBABILITY OF INTERNAL EROSION IN EARTHEN DAM SEEPAGE
Yanar, Oğulcan; Çalamak, Melih; Department of Civil Engineering (2024-1-26)
Piping, caused by internal erosion, is one of the main failure modes of earthen dams. In this study, a probabilistic modeling framework was proposed to determine the reliability of an earthen dam against internal erosion. ...
3D printed concrete: multiscale mechanical characterization and computational modeling
Bayrak, Alper Tunga; Sarıtaş, Afşin; Akgül, Çağla; Department of Civil Engineering (2024-1-26)
This thesis presents a comprehensive exploration of the physical, mechanical, and thermal properties of 3D Printed Concrete (3DPC) structures across micro, meso, and macrostructural scales. The central focus is the analysi...
Probabilistic hazard assessment of seismically-induced slope deformations
Akbaş, Burak; Çetin, Kemal Önder; Gülerce, Zeynep; Department of Civil Engineering (2024-1-26)
Risk and safety assessment of earthquake-induced slope deformations are critical for proper management and mitigation of secondary hazards arising from the ground shaking during seismic events. Therefore, the objective of ...
INVESTIGATION OF ARTIFICIAL INTELLIGENCE TOOLS IN DESIGN PROCESS AND CREATIVITY
Arda, Denizhan; Börekçi, Naz Ayşe Güzide Z.; Department of Industrial Design (2024-1-26)
In recent years, artificial intelligence (AI) tools have seen a significant development and entered many areas of our lives. Sources of inspiration related to design, current news channels, and social media pages share vis...
CHALLENGES OF PRE-SERVICE PHYSICS TEACHERS IN ARGUMENT-DRIVEN INQUIRY ACTIVITIES
Demirtaş, Dilber; Özdemir, Ömer Faruk; Yıldırım, Ufuk; Department of Secondary Science and Mathematics Education (2024-1-26)
This study aimed to investigate challenges faced by pre-service physics teachers (PPTs) in an online course based on Argument-Driven Inquiry (ADI) as they acted as learners, planners, and instructors. An undergraduate elec...
BEYOND THE SURFACE: UNRAVELING THE IMPACTS OF MICROPLASTICS, DISSOLVED ORGANIC CARBON AND WARMING ON BACTERIA AND CILIATES
Yalçın, Gülce; Beklioğlu, Meryem; Jeppesen, Erik; Department of Biology (2024-1-26)
Shallow lake ecosystems face multiple stressors, including microplastic (MP) pollution, allochthonous dissolved organic matter (allo-DOM or tDOM) inputs, and the impact of climate change on water temperature. With the aim ...
SYNCHRONIZATION OF CHAOS THROUGH UNPREDICTABILITY IN DYNAMICAL SYSTEMS
Başkan, Kağan; Kürkcüoğlu, Seçkin; Akhmet, Marat; Department of Physics (2024-1-26)
The investigation of chaos synchronization spans three decades, resulting in the development of several methods such as identical, phase, and generalized synchronization. However, conventional methods often fail to detect ...
THE ROLE OF G-DOMAIN ON K-RAS AND Gα DIMERIZATION
Aydın, İrem; Son, Çağdaş Devrim; Department of Molecular Biology and Genetics (2024-1-26)
K-Ras protein is a member of the Ras superfamily, also known as a small G protein, and plays roles in different signaling pathways via binding and activating various effectors. Most of these pathways enable cellular activi...
Melt infiltration squeeze casting of SiC reinforced functionally graded metal matrix composite processing and characterization
Tatlışen, Eralp; Kalkanlı, Ali; Department of Metallurgical and Materials Engineering (2024-1-26)
Today, silicon carbide(SiC) ceramics reinforced with aluminum(Al) are used in variety of applications such as ballistics, structural applications, automotive industry and electrical systems. The aim of this study is to pro...
LOW COST DEFORMATION ANALYSIS OF OPEN PIT MINE BY USING UNMANNED AERIAL VEHICLE (UAV) TECHNOLOGY
Söğütcü, Göktuğ; Süzen, Mehmet Lütfi; Görüm, Tolga; Department of Geological Engineering (2024-1-26)
Geotechnical engineers are authorized people to assess the stability of any structure in mining projects as in the other engineering projects such as tunnel, motorway or dam construction, etc. In those projects, deformatio...
Numerical investigations of effective air chamber volumes against water hammer problem in pumped discharge lines
Baran, Seyfi Berkay; Bozkuş, Zafer; Dinçer, Ali Ersin; Department of Civil Engineering (2024-1-26)
Water hammer in pumped discharge line poses challenges, leading to pressure surges and potential damage. Air chambers effectively mitigate these challenges, yet their construction involves significant costs. This study foc...
OPTIMAL DESIGN OF SLOPE STABILIZING PILES USING METAHEURISTIC TECHNIQUES
Öcal, Arda; Pekcan, Onur; Department of Civil Engineering (2024-1-26)
The economical and efficient design of slope stabilizing piles is a challenging task that requires overcoming complex and detailed analysis procedures. This thesis proposes an optimization-based program to find optimal des...
Determination and Characterization of Arsenic and Selenium Species in Plants by HPLC-ICPMS/ESIMS
Özkan, Canan; Ertaş, Gülay; Department of Chemistry (2024-1-26)
It has been broadly recognized that selenium (Se) is beneficial element with many functions but arsenic (As) is known toxic depending on their concentrations and species in plant cells. The interactions of As and Se with t...
Investigation of student experinces in flipped programming using epistemic network analysis
Gedik, Nur; Er, Erkan; Department of Computer Education and Instructional Technology (2024-1-26)
Several researchers have been drawn to the use of flipped learning in classrooms as a way to enhance engagement and improve learning outcomes. Through the implementation of digital platforms, flipped learning, also known...
Architectural profanations: Frederick Kiesler's correalism
Ozyetis, Efrin; Mennan, Zeynep; Department of Architecture (2024-1-26)
This thesis provides a historical and conceptual examination of Frederick Kiesler’s Correalism. Coined by Kiesler himself, Correalism encapsulates his distinctive approach to architectural theory, merging aspects of what h...
Fabrication of subsurface submicron photonic structures inside crystal silicon
Karagöz, Burcu; Bek, Alpan; Department of Physics (2024-1-26)
Crystal silicon (c-Si) is an outstanding industrial material for microelectronics and optoelectronics. Its transparency for wavelengths longer than 1100 nm suggests that back surface and interior of a Si substrate can be p...
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