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  • Article
    Makroekonomik ve Sosyo-Politik Endeks Nitelikli Çalışan başına Reel GSYH’yi Nasıl Etkiler? Türk Cumhuriyetleri’nden Kanıtlar
    (Ahmet Yesevi Univ, 2023) Kucuker, Mustafa Can; Omay, Tolga; Celik, Esref Ugur; Erdal, Fehmi Buğra
    Bu çalışmada, nitelikli çalışan başına reel GSYH düzeyini etkileyen sosyoe- konomik faktörler üzerinde durulmuştur. Bu amaçla Türk Cumhuriyetleri için makroekonomik ve sosyo-politik performans endeksleri oluşturulmuştur. Yeni oluşturulan bu endeksler kullanılarak, nitelikli çalışan başına düşen reel GSYH düzeyinin belirleyicileri literatürde ilk kez analiz edilmektedir. Ampi- rik sonuçlar, belirli eşik düzeylerinin nitelikli çalışan başına reel GSYH düze- yini önemli ölçüde etkilediğini göstermektedir. Sonuç olarak, çalışmada yer verilen ülkelerin politika yapıcıları, ülkelerinin refahı açısından iyi organize edilmiş politikalar yürütmek için makroekonomik ve sosyo-politik perfor- mans endekslerin eşik değerlerini ciddi şekilde göz önünde bulundurmalıdır.
  • Article
    20. Yüzyıl Teknolojik Ütopyalarının günümüze Yansıması: Kapsül Oteller
    (Nilay OZSAVAS ULUCAY, 2025) Memikoğlu, İpek; Köse, Merve
    Several factors, such as population growth, increasing land prices, and challenging economic conditions, have led to a change in hotel design. In response to these challenges, capsule hotels have emerged as a potential solution. These hotels are designed to be compact, cost-effective, and conveniently located near airports or train stations. Inspired by the 20th-century techno-utopias and first emerging in Japan during the 1970s, these capsule hotels have spread to many countries in the 21st-century. The aim of this study is to identify the common and distinctive features of capsule hotels in different countries. Three capsule hotel examples were selected, namely the Nine Hours Capsule Hotel in Osaka, the KINN Capsule Hotel in Singapore, and the Capsule Hotel-Sydney in Sydney. The study used a mixed qualitative research method, including conceptual analysis and case study, and the selected hotel examples were analyzed using the homogeneous sampling technique. The design of these hotels, characterized by economic efficiency and limited facilities, shows variations across different countries in terms of capsule dimensions, color schemes, materials, and furnishings. The findings reveal discrepancies in location, color schemes, material choices, and amenities; however, the size, configuration, and access orientations of the capsules remain consistent with the established capsule hotel concept as defined in the literature.
  • Article
    The Turkish Adaptation, Validity, and Reliability of the Fragmented Self Inventory
    (Association for Clinical Psychology Research, 2025) Türkarslan, Kutlu Kağan; Akın, Zeynep Gül
    Parçalanmış Kendilik Envanteri (PKE), Heinz Kohut'un tanımladığı parçalanmış kendilik deneyimlerini incelemek için geliştirilmiş bir öz-bildirim ölçüm aracıdır. Ölçek, psikanalitik kendilik psikolojisi bağlamında parçalanmış büyüklenmecilik (PKE-PB) ve parçalanmış idealleştirme (PKE-Pİ) olmak üzere iki kendilik eksenindeki deneyimlere odaklanmaktadır. Bu çalışmanın amacı PKE’yi Türkçe’ ye uyarlamak ve psikometrik özelliklerini Türkçe konuşan bir örneklemde değerlendirmektir. Çalışmanın verileri 495 katılımcıdan toplanmıştır (kadın = %67.88, Ort.yaş = 33.86, SS = 12.87). PKE'nin iki faktörlü yapısını doğrulamak için doğrulayıcı faktör analizi gerçekleştirilmiştir. Ölçeğin yakınsak geçerliği, PKE-PB ve PKE-Pİ puanlarının; özsaygı, patolojik narsisizm, öz-denetim, disiplin, duygu düzenleme güçlüğü, hayat anlam ve amacı, depresyon, anksiyete ve stres değişkenleri ile ilişkisine bakılarak değerlendirilmiştir. Ölçeğin güvenirliği ise iç tutarlılık katsayıları ve test-tekrar test sınıf içi korelasyonları ile incelenmiştir. Doğrulayıcı faktör analizinin sonuçları PKE'nin Türkçe formunun iki faktörlü yapısını desteklemektedir. Parçalanmış büyüklenmecilik ekseninde daha yüksek puanların, düşük benlik saygısı ve yüksek patolojik narsisizm belirtileri ile; parçalanmış idealleştirmede daha yüksek puanların ise düşük öz-denetim, düşük disiplin, yüksek duygu düzenleme zorlukları ve hayatta anlam ve amaç bulma-da daha fazla güçlük çekme ile ilişkili olması, PKE’nin yakınsak geçerliğini desteklemektedir. PKE-PB ve PKE-Pİ alt ölçeklerinin, tatmin edici iç tutarlılık gösterdiği (McDonald'ın ω = .77 ve .86) ve dört haftalık test-tekrar test güvenirliğine (SKK = .78 ve .81) sahip olduğu görülmüştür. Parçalanmış büyüklenmecilik ve parçalanmış idealleştirmenin depresyon, anksiyete ve stresi yordadığı yol analizinde, parçalanmış büyüklenmeciliğin anksiyete ve stresi, parçalanmış idealleştirmenin ise depresyon, anksiyete ve stresi anlamlı şekilde yordadığı bulunmuştur. Bu çalışmanın bulguları, PKE'nin Türkçe formunun parçalanmış büyüklenmecilik ve parçalanmış idealleştirme deneyimlerini ölçmekte kullanılabileceğine işaret etmektedir.
  • Article
    Türkiye’de Fizyoterapi ve Rehabilitasyon Alanında, Öğrenci, Akademisyen ve Klinisyen Bakış Açısıyla Kanıta Dayalı Uygulamanın Yeri: Pilot Çalışma
    (Turkey Assoc Physiotherapists, 2025) Akınoğlu, Bihter; Bengüboz, Fatma Büşra; Arıkan, Zeynep
    Amaç: Kanıta dayalı uygulama (KDU), yüksek kaliteli klinik araştırmalara ve uygulamalara dayanan bir yöntemdir. Dünya Fizyoterapi Konfederasyonu’na göre KDU eğitimi fizyoterapi uygulama önerilerinin başında gelmelidir. Çalışmamızın amacı Türkiye’de fizyoterapi ve rehabilitasyon alanında, öğrenci, akademisyen ve klinisyen bakış açısıyla KDU’nun yerini ve önündeki engelleri araştırmaktır. Yöntem: Çalışma pilot çalışma olarak planlanmıştır. Çalışma süresince ulaşılabilecek bütün fizyoterapi ve rehabilitasyon alanında olan öğrenci, akademisyen ve klinisyenler ile çalışma gerçekleştirilmiştir. Değerlendirmede 28 sorudan oluşan “KDU Ölçeği” ve çalışmacılar tarafından hazırlanan KDU konusundaki görüşler, bilgi seviyesi, önündeki engellerin sorgulandığı bir form kullanılmıştır. Çalışma verileri web tabanlı bir form oluşturularak toplanmıştır. Bulgular: Çalışmamız 44 öğrenci, 22 akademisyen ve 31 klinisyen olmak üzere toplam 97 kişi ile gerçekleştirilmiştir. KDU’yu engelleyen faktörler cevaplarında “Order (tedavide hekim talimatı) almak” öğrencilerde %51,06, akademisyenlerde ve %31,57 klinisyenlerde %33,33 oranla ilk engel olarak belirtilmiştir. KDU ölçeği toplam puanları üç grup arasında karşılaştırıldığında istatistiksel olarak anlamlı farklar olduğu tespit edilmiştir (p=0,000). Sonuç: Çalışmamızın sonuçlarına bakıldığında farklı alanlarda bulunan fizyoterapistlerin KDU bilgi ve tutumlarının farklılıklar gösterdiği fakat ortak olarak Türkiye’de fizyoterapi ve rehabilitasyon alanında, öğrencilerin, klinisyenlerin ve akademisyenlerin KDU zorlaştırıcılarının başında “Order almak” faktörünün olduğu görülmüştür.
  • Article
    Influence of Synthesis Parameters on the Structural Formation of Mayenite via the Citrate Sol-Gel Method
    (Tubitak Scientific & Technological Research Council Turkey, 2025) Eryildirim, Busra; Oktar, Nuray; Dogu, Doruk
    Mayenite (Ca12Al14O33) has remarkable properties such as high oxygen mobility, ionic conductivity, and catalytic activity. It has many different applications, including oxide-conducting electrolytes, fluorescent lamps, moisture sensors, hydrogen-permeable membranes, oxygen pumps, hydrogen storage, and catalysis. However, pure and homogeneous mayenite synthesis parameters have not yet been fully explored. This study examines the effect of synthesis parameters including metal salt (MS) to citric acid (CA) molar ratios (1:1 and 1:2), pH (0.4-2), and calcination temperature (900-1200 degrees C) in citrate sol-gel method on the crystal structure of mayenite. Synthesized materials were examined by thermogravimetric (TG), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, N2 adsorption-desorption, scanning electron microscopy (SEM), inductively coupled plasma-optical emission spectrometry (ICP-OES), Fourier-transform infrared spectroscopy (FTIR), and pyridine adsorbed diffuse reflectance Fourier-transformed infrared spectroscopy (DRIFTS) analyses. The results show that all 3 parameters contribute to the mayenite phase formation and different impurity phases can be observed depending on the synthesis parameters. With no pH adjustment and an MS to CA ratio of 1, other phases of calcium aluminate mostly form. Mayenite becomes the main phase by doubling the CA amount. Besides CA, pH is also an important factor in mayenite synthesis. When the pH was adjusted to 2 with the MS to CA ratio at 1:1, mayenite was formed as the main phase, but other phases of calcium aluminate were also observed in the structure. XRD results show that all parameters studied influence the crystal structure of the final material, including the calcination temperature. This study shows that pure mayenite can be synthesized with a calcination temperature of 1200 degrees C, at a pH of 2, and the MS to CA molar ratio of 1:2.
  • Article
    W-Band RCS Prediction of Small Objects: Comparing Two Widely Used Methods with Experimental Validation
    (Gazi University, 2025) Kara, Ali; Aydın, Elif; Yardım, Funda Ergün; Sezgin, Deniz; Ergun Yardim, Funda
    This paper compares the accuracy of Shooting and Bouncing Rays and Electric Field Integral Equation methods for Radar Cross Section prediction of small objects at 77-81 GHz band. Existing studies on RCS prediction methods often lack comprehensive comparisons between computational and experimental results, particularly for small objects measured with a 77 GHz radar. This study addresses this gap by presenting an in-depth analysis of both simulation and measurement data. In this work, three targets with varying geometries and materials were measured with a frequency modulated continuous wave radar and simulated using Ansys HFSS and CST Studio Suite. The measurements were performed with a commercial off-the-shelf (COTS) frequency modulated continuous wave radar operating at 77–81 GHz. This study aims to emphasize the importance of considering both efficiency and accuracy when opting for an RCS prediction method. Overall, the outcomes of both methods have largely demonstrated good alignment. It has been noted that, while Shooting and Bouncing Rays method offers promising time-saving advantages, Electric Field Integral Equation method remains a valuable tool for complex geometries where precise results are crucial.
  • Article
    ISAR Imaging of Drone Swarms at 77 GHz
    (Tubitak Scientific & Technological Research Council Turkey, 2025) Coruk, Remziye Busra; Kara, Ali; Aydin, Elif
    The proliferation of easily available, internet-purchased drones, coupled with the emergence of coordinated drone swarms, poses a significant security threat for airspace. Detecting these swarms is crucial to prevent potential accidents, criminal misuse, and airspace disruptions. This paper proposes a novel inverse synthetic aperture radar (ISAR) imaging technique for high-resolution reconstruction of drone swarms at 77 GHz millimeter wave (mmWave) frequency, offering a valuable tool for military and defense antidrone systems. The key parameters affecting down-range and cross-range resolution (0.05 m), ultimately enabling the generation of detailed ISAR images are discussed. Here, we create diverse scenarios encompassing various swarm formations, sizes, and payload configurations by employing ANSYS simulations. To enhance image quality, different window functions are evaluated, and the Hamming window is selected due to its highest peak signal-to-noise ratio (PSNR) (16.3645) and structural similarity (SSIM) (0.9067) values, ensuring superior noise reduction and structural preservation. The results demonstrate that the effectiveness of high-resolution ISAR imaging in accurately detecting and characterizing drone swarms pave the way for enhanced airspace security measures.
  • Article
    The Effect Of Constructivist Training On The Rate Of Catheter-Associated Urinary Tract Infections in The Intensive Care Unit
    (Anestezi Dergisi, 2025) Yarimoglu, Saliha; Erdinç, Fatma Şebnem; Kaymak, Çetin; Tulek, Eren, N.; Basa̧r, Hulya; Tuncer-Ertem, Günay,; Kinikli, Sami; Tulek, Necla; Ertem, Gunay Tuncer
    Objective: Catheter-associated urinary tract infections (CA-UTIs) are common healthcare-associated infections. Constructivist training is based on integrating new knowledge with previously learned knowledge. The aim of this study was to evaluate the effects of constructivist training on the rate of CA-UTIs in the Anesthesia and Reanimation Intensive Care Units (ARICU). Methods: This study was a retrospective-prospective intervention study. Over the period of one month, a total of 62 healthcare staff (seven doctors, 38 nurses, and 17 cleaning staff) working in ARICUs were organized into groups of 4-5 people and received forty-five minutes of constructivist training on preventing CA-UTI. Personnel from each of three ICUs participated in the same number of training sessions. Comparisons were made of the rates of CA-UTI and catheter use in the six-month periods before and after the training. A 4-item questionnaire was administered to the study participants six months after completion of the training. Results: The catheter-associated urinary tract infection rates before and after training were observed to be 8.3 and 8.7 per 1000 catheter days, respectively in ARICU-1, 7.0 and 8.1 per 1000 catheter days in ARICU-2, and 7.3 and 9.9 per 1000 catheter days in ARICU-3. No statistically significant difference was observed in the CA-UTI rate in each unit after constructivist training compared to the pre-training period. The intervention of constructivist training alone did not reduce the CA-UTI rates in the ICUs. According to the results of the survey conducted six months later, 92% of the nurses and 88% of the cleaning staff stated that constructivist training had positive effects. Conclusion: The intervention of constructivisit training alone did not reduce the rates of CA-UTIs in the ARICUs, but an increase was observed in the awareness of ICU nurses and cleaning staff. © 2025 Elsevier B.V., All rights reserved.
  • Article
    Citation - Scopus: 1
    Revolutionizing Glaucoma Care: Harnessing Artificial Intelligence for Precise Diagnosis and Management
    (Gazi Eye Foundation, 2025) Ucgul, A.Y.; Aktaş, Z.
    Glaucoma is a leading cause of irreversible blindness worldwide, necessitating early detection and effective management to prevent vision loss. Recent advancements in artificial intelligence (AI) have revolutionized glaucoma care by enhancing diagnostic accuracy, monitoring disease progression, and personalizing treatment strategies. AI models, including machine learning and deep learning algorithms, have demonstrated exceptional performance in analyzing fundus photography, optical coherence tomography, and visual field data, surpassing traditional diagnostic methods. Convolutional neural networks have shown high sensitivity and specificity in detecting glaucomatous changes, while vision transformers and hybrid AI models further refine risk assessment and prognosis. Additionally, AI-powered monitoring systems utilizing multi-modal data integration allow for more precise prediction of disease progression and the need for surgical intervention. The incorporation of AI into telemedicine and wearable intraocular pressure sensors extends glaucoma management to remote and underserved populations. Despite these advancements, challenges remain, including issues related to algorithm generalizability, data standardization, bias, and ethical concerns regarding AI-driven clinical decision-making. To maximize AI’s potential in glaucoma care, further interdisciplinary research, regulatory oversight, and multi-center validation studies are needed. By addressing these challenges, AI can be effectively integrated into clinical practice, leading to improved early detection, enhanced treatment strategies, and more personalized patient care. The future of AI in glaucoma management holds great promise, paving the way for a more data-driven and patient-centered approach to combating this sight-threatening disease. © 2024 The author(s).
  • Article
    Evaluating Peripapillary Vessel Density and Retinal Nerve Fiber Layer Thickness in Pseudoexfoliation Syndrome: A Comparative Study
    (Gazi Eye Foundation, 2025) Aribas, Y.K.; Aktaş, Z.; Segewa, A.; Segawa, Asadu
    Purpose: To evaluate the changes in the peripapillary vessel density and retinal nerve fiber layer thickness changes in pseudoexfoliation syndrome compared to healthy controls. Methods: The changes were studied in thirty eyes of thirty patients with pseudoexfoliation syndrome using optical coherence tomography angiography. Peripapillary vessel densities and peripapillary nerve fiber layer thicknesses were used to compare the optic nerve head characteristics in eyes with PSX and twenty-five healthy control eyes. Results: Average, superior, and inferior RNFL thicknesses were similar in both groups (p:0.055, p:0.052, p:0.116 respectively). Eyes with PSX had lower VD values compared to healthy control groups in peripapillary, superior, and inferior segments. (p:0.011, p:0.013, p:0.017 respectively). There were significant positive correlations between RNFL thickness and peripapillary vessel density in their corresponding sectors except for inferotemporal and temporal superior sectors. (p<0.05 except inferotemporal and temporal-superior sectors) Conclusion: In this study, peripapillary vessel density was found lower in eyes with pseudoexfoliation syndrome compared to age and systemic co-morbidity matched control group. These findings suggest that reduced peripapillary vessel density which may lead to ischemia might cause vulnerability to glaucomatous damage at the optic nerve head. However, further research needs to be done to establish whether the reduction of vessel density is associated with the progression to the pseudoexfoliation glaucoma and increased vulnerability to the glaucomatous damage. © 2024 The author(s).