Graduate School of Natural and Applied Sciences

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Recent Submissions

Development of a tissue-engineered oral mucosal barrier model using poly (l-lactic acid) electrospun nanofibers Sarasati, Andari; YÜCEL, DENİZ; KENAR, HALİME; Wihadmadyatami, Hevi; Ozdemir, Neval Sevinc; Anggraeni, Rahmi; Hasırcı, Vasıf Nejat; Ana, Ika Dewi (2026-12-01) The oral mucosa is a crucial barrier that defends against external factors and regulates tissue permeability. To advance trans-epithelial drug delivery and dental biomaterials research, a robust in vitro model of oral muco...
Beyond brain drain: Spatial and non-spatial determinants of highly skilled Turkish professionals' mobility to Dutch city-regions Saçın, Hülya; Büyükcivelek, Ahmet Burak (2026-12-01) Global competition for talent has shifted from nations to city-regions, rendering traditional wage-driven migration models insufficient. This study examines the “New Wave” of highly skilled migration from Turkish metropoli...
Boosting the density of NV centers in diamond through nanosecond sub-bandgap laser irradiation Salci, Rumeysa; Ozdemir, Okan; Bilgin, Muhammed; Mansoor, Mubashir; Oral, Ahmet; Ozbay, Aisha G.; Arslan, Leyla C. (2026-10-01) Nitrogen-vacancy (NV) centers in diamond are the basis for a wide range of quantum sensing technologies, with a major engineering frontier being selective formation of NV centers on demand. However, creating engineered pat...
IMPROVEMENT OF THE COOLING PERFORMANCE OF GAS TURBINE COMBUSTOR COOLING TECHNIQUES Gülenç, Gamze; Güvenç Yazıcıoğlu, Almıla; Department of Mechanical Engineering (2026-9-23) This thesis presents the development, validation, and application of numerical methodology to investigate the cooling performance of gas turbine combustor cooling techniques under non-reacting conditions. To isolate the ef...
Acid hydrolysis of sodium borohydride by carbon dioxide releasing 4 equivalent H2 gas Ergani, Songül Kaskun; Postallikara, Baris; Akbayrak, Serdar; Özkar, Saim (2026-09-17) Hydrogen generation from the hydrolysis of sodium borohydride is achieved using CO2 according to the equation: NaBH4(aq) + CO2(g) + 4H2O(l) → NaHCO3(aq) + H3BO3(aq) + 4H2(g). One mole of CO2 promotes the release of four eq...
Comprehensive range characterization in cooled and uncooled LWIR cameras using theoretical and experimental MRTD models Çiftçi, Meryem; Bek, Alpan; Demircioğlu, Zeynep; Department of Physics (2026-9-16) This thesis presents a comprehensive comparative analysis of range performance for cryogenically cooled photon and uncooled microbolometer Long-Wave Infrared (LWIR) imaging systems. Targeting capabilities for Detection, ...
PRICING STRATEGIES OF DESIGN COMPANIES FOR PRODUCT DESIGN SERVICES IN TURKEY Muslular, Levent; Börekçi, Naz Ayşe Güzide Z.; Department of Industrial Design (2026-9-4) This thesis investigates the pricing strategies used by design companies and professionals for product design services in Turkey. It approaches pricing not only as a financial calculation but as a professional and relation...
FUNCTION DISCRIMINATION VIA QUANTUM SIGNALPROCESSING WITHANULL INPUT Olgun, Halil İbrahim; Turgut, Sadi; Department of Physics (2026-9-4) This thesis applies Quantum Signal Processing (QSP) to solve a generalized Deutsch Jozsa promise problem: distinguishing whether a Boolean function has r1 or r2 so lutions in a search space of size N. Standard QSP suffers ...
Cross-Lingual Humor Detection, Rating, and Classification Using Transformer Models: A Comparative Study Across Turkish, English, and Spanish Short Texts Tek, Deniz Güvenç; Başbuğ Erkan, Berna Burçak; Department of Statistics (2026-9-4) Humor is figurative in nature and deeply rooted in the social and cultural context of language. Short humorous social media texts present an additional challenge for natural language processing (NLP) to interpret, as they ...
STUDY OF MUONIC TRIDENT PRODUCTION WITH THE SND@LHC EXPERIMENT Durhan, Onur; Güler, Ali Murat; Department of Physics (2026-9-04) The SND@LHC experiment is designed to study neutrinos produced in proton-proton collisions at the LHC, covering an energy range of a few hundred GeV to several TeV. It probes an unexplored pseudo-rapidity range of 7.2 < η ...
Energy Poverty as an Architectural Problem: Assessing Vulnerability in Ankara's Residential Stock Through Building Energy Simulation and Socioeconomic Data Elgin, Başak; Dino, İpek Gürsel; Abbas Okutman, Günsu Merin; Department of Architecture (2026-9-4) Energy poverty is a growing global concern, particularly in developing countries, extending beyond economic hardship to encompass the spatial and environmental conditions that shape everyday life. Yet it is widely measured...
MODELLING THE POTENTIAL DISTRIBUTION OF HONEY BEES IN TÜRKİYE UNDER CMIP6 CLIMATE CHANGE SCENARIOS USING SPECIES DISTRIBUTION MODELLING AND ETHICAL EVALUATION OF TECHNOLOGICAL RESPONSES Zurnacı, Nisanur; Sol, Ayhan; Alpas, Hami; Department of Earth System Science (2026-9-4) Bees are essential for food security through pollination, but their decline has driven technological responses such as robotic bees, which remain experimental. This thesis evaluates replacing living bees with robotic bees,...
Communication-Aware Active SLAM for Decentralized Swarm Exploration Kosdik, İmre; Onur, Ertan; Sürer, Elif; Department of Computer Engineering (2026-9-04) To map an unknown terrain where GPS is unreliable or unavailable, decentralized UAV swarms must have a trade-off between maximizing spatial coverage, maintaining network connectivity, and limiting the localization drift ac...
Transformer-Based Multi-Model Rank Fusion for Cross-Domain Recommendation and Dense Information Retrieval Aydoğdu, Mehmet Erdeniz; Altıngövde, İsmail Sengör; Karagöz, Pınar; Department of Computer Engineering (2026-9-04) Rank fusion is an effective approach for combining outputs from multiple ranking models, though existing methods often have difficulty generalizing across different data environments. This thesis introduces EmbMerge, a tra...
PATHWAYS TO URBAN DECARBONIZATION: A COMBINED ASSESSMENT OF ENERGY, ECONOMICS AND ENVIRONMENTAL PERFORMANCE OF AN EXISTING BUILDING STOCK İlkbahar, Cihat; Gürsel Dino, İpek; Voyvoda, Ebru; Department of Architecture (2026-9-4) Building energy renovation is a critical pathway for cities aiming to achieve a clean energy transition and mitigate climate change, and determining optimal renovation scenarios requires analysis of trade-offs among invest...
REAL TIME FRF ESTIMATION BASED ON ACCELERATION RESPONSE MODEL Kaçan, Samet Can; Çalışkan, Hakan; Department of Mechanical Engineering (2026-9-04) This paper presents real-time methodology for FRF estimation during milling operations. Unlike conventional offline Experimental Modal Analysis (EMA) and Operational Modal Analysis (OMA) methods, the proposed approach enab...
Investigating Optimization Methods for Spectrum Preservation in Subdivision Surfaces Ağış, Fırat; Sahillioğlu, Yusuf; Department of Computer Engineering (2026-9-4) Subdivision schemes are widely used in digital geometry processing, but they are typically optimized for geometric continuity rather than spectral properties. In this thesis, we investigate the problem of optimizing existi...
An experimental study on the electrical resistivity of concrete with carbon textile and steel fiber Erdoğan, Muammer; Yaman, İsmail Özgür; Department of Civil Engineering (2026-9-4) In cold climates, snow and ice accumulation on pavements compromises roadway safety and serviceability. While conventional passive methods, such as chemical deicers and mechanical plowing, remain standard practice, they ca...
Value of disruption duration information Mercan, Nilsu; Bayındır, Zeynep Pelin; Demirci Kaplan, Ece Zeliha; Department of Industrial Engineering (2026-9-04) Supply disruptions can increase inventory costs and interrupt supply operations. This thesis focuses on an infinite-horizon, continuous-review inventory system with deterministic and stationary demand. An unreliable suppli...
Household-level indoor heat vulnerability assessment integrating urban building energy modeling and synthetic population generation Güler, Mehmet Furkan; Gürsel Dino, İpek; Department of Architecture (2026-9-04) Climate change negatively affects human health by increasing the frequency and intensity of extreme weather events, such as heatwaves and increased temperatures, which increase the risk of mortality and morbidity. Heat Vul...

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