http://hdl.handle.net/20.500.12566/5 Fri, 17 Jul 2026 05:55:50 GMT 2026-07-17T05:55:50Z http://http://acikerisim.antalya.edu.tr:80/xmlui/bitstream/id/018aed0a-e4d5-4dc9-83d9-e039256cb841/ABU Logo.png http://hdl.handle.net/20.500.12566/5 http://hdl.handle.net/20.500.12566/2493 Determination of neutron and gamma ray shielding properties, secondary radiation formations and neutron damage of composites containing polyester/pyrite/titanium diboride Turhan, Mehmet Fatih; Kaçal, Mustafa Recep; Özdoğan, Hasan; Turşucu, Ahmet; Akman, Ferdi; Oğul, Hasan; Polat, Hasan; Yurtcan, Sinem Composite materials comprising titanium diboride (TiB2), unsaturated polyester resin, and pyrite (FeS2) at varying weight percentages were fabricated and evaluated for their interaction with neutron and gamma radiation. This study adopts a comprehensive methodology, combining theoretical calculations, experimental measurements, and Monte Carlo simulations using PHITS and MCNP6. A strong correlation was observed among experimental results, WinXCOM data, and simulation outputs, with discrepancies remaining within approximately 5 %. To assess neutron shielding performance, fast neutron removal cross sections and partial neutron transmission rates were determined for both fast and thermal neutron energies, as well as across varying sample thicknesses. Additionally, secondary radiation effects were analyzed by quantifying the number and average energy of secondary neutrons and gamma photons generated from interactions with thermal and fast neutrons. Radiation damage parameters, including Total Ionizing Dose (TID) and Displacement Per Atom (DPA), were also evaluated. Gamma-ray shielding performance was assessed through experimental measurements, theoretical models, and Monte Carlo simulations, focusing on key parameters such as mass attenuation coefficients, kerma relative to air and concrete, and buildup factors. Among the composites, the sample labeled FeSTiB-50 demonstrated superior fast neutron attenuation capability—outperforming conventional concrete and approaching the shielding efficiency of paraffin—while all composites exhibited excellent attenuation of thermal neutrons. Furthermore, the FeSTiB-50 composite generated secondary radiation with lower average energy compared to other samples. However, the gamma-ray shielding performance was found to decrease with increasing TiB2 content, indicating a trade-off between neutron and gamma shielding effectiveness. Wed, 01 Jan 2025 00:00:00 GMT http://hdl.handle.net/20.500.12566/2493 2025-01-01T00:00:00Z http://hdl.handle.net/20.500.12566/2492 Antalya/Elmalı/Bozhüyük köyü kırsal yerleşim ve geleneksel konut mimarisinin incelenmesi Akdeğirmen Ercan, Selin; Gençer, Ceylan İrem Güler, Koray; Arslan Çinko, Merve Antalya İli, Elmalı İlçesi’nde yer alan Bozhüyük Köyü ve çevresi Kalkolitik Çağ’dan itibaren yerleşim alanlarının bulunduğu ve üretimin yapıldığı bir bölge olmuştur. Höyük etrafında konumlanmış olan köy, üretimden dolayı toplu bir yerleşim özelliği göstermektedir. Köy odası gibi ortak mekânların yanında, yerleşimde konutlar ve ambar, ambarlı konut, koyun damı gibi bölgedeki üretimin önemli göster- gesi olan eklentiler önemli kırsal mimarlık öğelerini oluşturmaktadır. Bu yapılar bölgenin genelinde görülen ve geçmişten gelen taş, kerpiç ve ahşabın birlikte kullanıldığı bir yapı geleneğiyle oluşturulmuş olup, bu sistem 1980’lerin sonuna kadar devam etmiştir. Fakat günümüzde ustaların olmaması ve değişen ihtiyaçlar doğrultusunda kerpiç üretimi yapılmamakta ve yeni yapı malzemelerinin dokuya girdiği görülmektedir. Bu duruma rağmen doku bütünlüğünün büyük ölçüde korunmuş olduğu yerleşimde sadece köy camisi ve merkez- deki höyük koruma altına alınmış olup, doku genelinde herhangi bir çalışma yapılmamıştır. Bu doğrultuda bu katmanlı dokuda doktora tezi kapsamında dijital belgeleme çalışması ve tek yapı ölçeğinde belirlenen yapılarda tespitler gerçekleştirilmiş, yerleşime dair analizler hazırlanmıştır. Wed, 01 Jan 2025 00:00:00 GMT http://hdl.handle.net/20.500.12566/2492 2025-01-01T00:00:00Z http://hdl.handle.net/20.500.12566/2491 Greenhouse gas emissions, economic factors, and socio-economic dynamics in canada Erkişi, Kemal This study investigates how economic and socio-economic structures are associated with greenhouse gas emissions in Canada between 1990 and 2024. Moving beyond a narrow growth–energy perspective, it brings together economic growth, population density, energy consumption, renewable energy, financial development, income inequality, and trade openness within a unified time-series framework. The analysis employs a VECM to examine long-run equilibrium and short-run adjustment, while FMOLS provides robustness evidence for the long-run estimates. The findings show that emissions are positively associated with growth, population density, energy consumption, income inequality, and trade openness, but negatively associated with renewable energy and financial development. Short-run dynamics largely reinforce these long-run patterns, and the error-correction mechanism indicates gradual adjustment toward equilibrium. The results suggest that Canada’s emissions reflect not only energy intensity and scale, but also demographic, distributional, financial, and external-integration channels. Policy responses should combine energy transition with cleaner production, financial allocation, and socio-economic considerations. Thu, 01 Jan 2026 00:00:00 GMT http://hdl.handle.net/20.500.12566/2491 2026-01-01T00:00:00Z http://hdl.handle.net/20.500.12566/2490 Does governance-based adaptation capacity reduce human exposure to disasters? evidence from disaster-exposed OECD economies Erkişi, Kemal This study examines whether governance-based adaptation capacity reduces human exposure to natural disasters in 14 disaster-exposed OECD countries over the period 2000–2024. Using a two-way fixed-effects framework with Driscoll–Kraay standard errors, the analysis evaluates the joint roles of temperature anomalies, disaster frequency, and governance capacity in shaping the disaster-affected population. The results show that temperature anomalies have a nonlinear effect on human exposure, while disaster frequency increases disaster-affected population across all model specifications. By contrast, governance-based adaptation capacity reduces baseline exposure. In the preferred specification, the coefficient of governance capacity is negative (−0.983), whereas the interaction between disaster frequency and governance capacity is positive (0.071), indicating that institutional capacity lowers baseline vulnerability but does not fully offset the effect of repeated hazard occurrence. These findings suggest that governance-based adaptation plays a protective role, yet its effectiveness remains conditional on the scale and frequency of climate-related hazards. The results underline the importance of strengthening institutional capacity as part of broader disaster risk reduction and adaptation strategies. Thu, 01 Jan 2026 00:00:00 GMT http://hdl.handle.net/20.500.12566/2490 2026-01-01T00:00:00Z