Atılım Academic Archive (Atılım University)
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Video Mapping as New Media Art: Impact on Spatial Transformation of Public Space
Full text linkVideo haritalama, yapı yüzeylerine ve kamusal alanlara projeksiyon teknolojisi kullanılarak görsel içeriklerin yansıtılması yoluyla mekânın deneyimsel ve mekânsal olarak yeniden biçimlendirilmesini sağlayan bir yeni medya sanatı tekniği ve pratiğidir. Bu teknik, geçici veya kalıcı biçimlerde mekâna entegre edilerek, fiziksel çevreyi estetik, sosyal ve mekânsal açılardan dönüştürme potansiyeline sahiptir. Son yıllarda kentlerin kamusal alanlarında farklı amaçlarla gerçekleştirilen video haritalama uygulamaları, yalnızca görsel bir etki yaratmanın ötesinde, toplumun taleplerini ve beklentilerini mekâna yansıtan güçlü bir ifade aracı haline gelmiştir. Toplumun kamusal alana yönelik artan ilgisi ve sanatsal beklentileri, bu alanların fiziksel yapısında dönüşümler gerektirmekte; video haritalama uygulamaları, kamusal mekânın daha esnek, katılımcı ve işlevsel bir yapıya dönüşmesine olanak sağlamaktadır. Video haritalamanın toplumla kurduğu ilişki, kamusal alanlarda bulunma süresi ile doğrudan ilişkilidir. Geçici uygulamalar anlık deneyimler ve algısal değişimler yaratırken, kalıcı uygulamalar kamusal alanın kimliğini şekillendirerek mekânsal düzenlemeleri teşvik edebilmektedir. Bu tezin amacı, video haritalama uygulamalarının kamusal alanın dönüşümündeki potansiyelini incelemektir. Bu tez kapsamında, öncelikle kamusal sanatın ve yeni medya sanatının kamusal alan ve toplum üzerindeki etkileri kuramsal düzeyde incelenmiştir. Bu çerçevede, yeni medya sanatı pratiği olarak video haritalama uygulamaları ele alınmış; yurt dışında gerçekleştirilen örnekler geçici ve kalıcı nitelikleri üzerinden karşılaştırmalı olarak analiz edilmiştir. Daha sonra Türkiye'de gerçekleştirilen video haritalama uygulamaları değerlendirilmiş ve bu uygulamaların ağırlıklı olarak geçici nitelikte olduğu gözlemlenmiştir. Ankara kent meydanlarında video haritalama uygulamasının gerçekleştirilebilirliği araştırılmış; uygun bulunan alanlar için öneri geliştirilmiştir. Ulus, Kızılay ve Anadolu Meydanları özelinde, içerikler tematik olarak kategorize edilmiş ve her bir alanın fiziksel ve işlevsel özellikleri doğrultusunda kamusal alanda mekânsal düzenleme önerileri sunulmuştur.Video mapping is a new media art technique and practice that enables the experiential and spatial reshaping of space by projecting visual content onto building surfaces and public spaces using projection technology. This technique has the potential to transform the physical environment in aesthetic, social and spatial terms by being integrated into the space in temporary or permanent forms. In recent years, video mapping applications carried out for different purposes in public spaces of cities have become a powerful means of expression that reflects the demands and expectations of society to space, beyond creating only a visual effect. The increasing interest and artistic expectations of society towards public spaces necessitate transformations in the physical structure of these spaces; video mapping applications enable the transformation of public spaces into a more flexible, participatory and functional structure. The relationship established by video mapping with the society is directly related to the duration of stay in public spaces. While temporary applications create instant experiences and perceptual changes, permanent applications can shape the identity of the public space and encourage spatial arrangements. The aim of this thesis is to examine the potential of video mapping applications in the transformation of public space. Within the scope of this thesis, firstly the effects of public art and new media art on public space and society were examined at a theoretical level. In this context, video mapping applications were discussed as a new media art practice; examples realized abroad were comparatively analyzed in terms of their temporary and permanent qualities. Then, video mapping applications realized in Türkiye were evaluated and it was observed that these applications were mostly temporary. The feasibility of video mapping application in Ankara city squares was investigated; suggestions were developed for suitable areas. In the case of Ulus, Kızılay and Anadolu Squares, the contents were thematically categorized and spatial arrangement suggestions were presented in the public space in line with the physical and functional characteristics of each area
Evaluation of Anti-Tetanus IgG Antibody Levels and Influencing Factors in Patients Undergoing Hemodialysis
No full textAim: This study aimed to assess anti-tetanus IgG antibody levels and identify determinants of inadequate tetanus immunity among maintenance hemodialysis (HD) patients. Methods: In this cross-sectional study, anti-tetanus IgG levels were measured by quantitative ELISA in 162 adult HD patients from two dialysis centers in Ankara, Turkey. Protective immunity was evaluated using both international (>= 0.1 IU/mL) and robust (>= 0.5 IU/mL) cut-offs. Demographic and clinical factors associated with immunity were analyzed by multivariate logistic regression. Results: Only 16.7% of HD patients achieved robust protection (>= 0.5 IU/mL), whereas 49.8% had minimal protection (>= 0.1 IU/mL). Protective immunity was independently associated with younger age (OR 1.07 per year; p = 0.004), shorter dialysis duration (OR 1.07; p = 0.030), male sex (female OR 2.92; p = 0.048), and recent booster vaccination within 10 years (OR 0.11; p Conclusion: Most HD patients lacked durable tetanus immunity, particularly older females on long-term dialysis. The findings highlight the need for regular antibody monitoring, early revaccination, and structured booster programs to maintain adequate protection in this high-risk population
Bibliometric Analysis of Authors Contributing to the Development of Health Management and Studies Published in WOS in the Field of Health Management
No full textIn this study, scientific publications on the management of health institutions and health services, which are becoming increasingly important both in the country and in the world agenda, have been analysed, and it is aimed to make a comprehensive determination by analysing the annual publication amounts, most cited works, most relevant and influential source analysis, source co-citation network analysis, most relevant and influential author analysis, cooperation between authors analysis, author co-citation network analysis, and country's scientific production map and cooperation analysis. The result of the analysis showed that 3,940 article-type documents were published from 1,466 different sources between 1977 and 2021. The country that published the highest number of articles in the field of study was the USA, with 3,405 articles. In the analysis of the most relevant and influential sources, the most relevant source was found as 'Health Policy', which has published 80 articles since its first publication in 1986. The most relevant author in the study field was Yasumura who published 63 articles in total and was found to be one of the most influential authors in the study field. This study is evaluated to provide a macroscopic perspective for all stakeholders interested in the subject and those involved in the health system by providing a holistic perspective
Sağlık İşletmelerinin Kurumsal Yönetim ve Sürdürülebilirlik İlkelerine Uyum Düzeyleri Hisse Senetlerinin Fiyat Dalgalanmasını Azaltıyor Mu? Borsa İstanbul Örneği
No full textSağlık işletmeleri hem bireylerin sağlığına hem de ülkelerin ekonomilerine çok büyük katkılar sunmaktadır. Sağlık işletmelerinin- diğer tüm işletmeler için de geçerli olduğu üzere- finansal piyasalardan yeterli düzeyde fon toplayabilmesi büyük önem taşımaktadır. Kurumsal yönetim ve sürdürülebilirlik ilkelerine yüksek düzeyde uyumun, yatırımcı talebini ve güvenini artırarak işletmelerin hisse senedi fiyat dalgalanmasını azaltması beklenmektedir. Böylelikle, işletmelerin finansal piyasalardan daha kolay ve daha fazla fon temin edebilmesi mümkün olabilir. Bu çalışmada; Türkiye'de halka açık sağlık işletmelerinin kurumsal yönetim ve sürdürülebilirlik ilkelerine uyum düzeylerinin, hisse senedi fiyat dalgalanması üzerindeki etkisi ampirik olarak araştırılmıştır. Araştırmanın bulguları, sağlık işletmelerinin kurumsal yönetim ilkelerine uyum düzeylerinin hisse senedi fiyat dalgalanmasını azalttığını, ancak bu etkinin istatistiksel olarak anlamlı olmadığını göstermektedir. Ayrıca, sağlık işletmelerinin sürdürülebilirlik ilkelerine uyum düzeylerinin hisse senedi fiyat dalgalanması üzerinde azaltıcı bir etkisi olmadığı sonucuna ulaşılmıştır. Bu durum, kurumsal yönetim ve sürdürülebilirlik alanlarının ve ilgili raporlamaların Türkiye’de hâlen görece yeni olmasıyla açıklanabilir
Crack Detection on Asphalt Runway Using Unmanned Aerial Vehicle Data with Non-Crack Object Removal and Deep Learning Methods
No full textUnmanned aerial vehicles are extensively utilized for image acquisition in a cheap, fast, and effective way. In this study, an automatic crack detection method with non-crack object removal and deep learning-based approaches are developed and tested on images captured by unmanned aerial vehicle. The motivation of this study is to detect either a crack exists or not in the asphalt-runway. The novelty of this study lies in integrating a non-crack artifact removal process with six classical edge detectors and comparing the resulting performance with four lightweight CNN models on the same UAV-acquired runway image dataset, enabling a unified evaluation of classical and learning-based approaches. For deep learning-based approach, four lightweight CNN models, namely GoogleNet, SqueezeNet, MobileNetv2, and ShuffleNet, are trained and the best accuracy of 87.9 is obtained whenever GoogleNet model is used. For the non-crack object removal approach, exclusion of non-crack objects from the images is the first step, where crack-detection which makes use of edge-detection techniques is the latter. In the study, Sobel, Prewitt, Canny, Laplacian of Gaussian, Roberts and Zero Cross edge detection algorithms are examined and their success rates in detecting cracks are comparatively presented. With sensitivity=0.981, specificity=0.744, accuracy=0.917, precision=0.912 and F-score=0.945 values Canny algorithm performs significantly better than others in detecting the cracks. This study provides enough evidence for the practicability of automated crack detection on unprocessed digital photographs by the results of the study conducted on asphalt runway. © (c) 2025 Tapkın, S., Tercan, E., Bostan, A. and Şengül, G. This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivatives 4.0 International License. https://creativecommons.org/licenses/by-nc-nd/4.0
The Mediating Role of Self-Compassion in the Relationship between Postpartum Depression and Breastfeeding Self-Efficacy
No full textMert-Karadas, Merve/0000-0002-9171-3035; Akdag Topal, Cansu/0000-0002-1851-1728Postpartum depression (PPD) may adversely affect breastfeeding self-efficacy, yet the underlying mechanisms remain unclear. This study explored whether self-compassion mediates the relationship between PPD and breastfeeding self-efficacy among Turkish women. An expert model was developed based on validated scales: the Self-Compassion Scale, the Edinburgh Postpartum Depression Scale, and the Postnatal Breastfeeding Self-Efficacy Scale-Short Form. In this cross-sectional study, 236 women (mean age: 28.71, SD = 6.16) were surveyed. Results showed that depression was negatively associated with self-compassion (beta = -0.474, p < 0.001), and self-compassion was positively associated with breastfeeding self-efficacy (beta = 0.785, p < 0.001). Mediation analysis indicated that self-compassion partially mediated the link between PPD and breastfeeding self-efficacy, with a significant indirect effect (-0.586, -0.209). Depression also had a direct negative effect on breastfeeding self-efficacy (beta = -0.484, p < 0.001). These findings suggest that fostering self-compassion may enhance maternal mental health and breastfeeding outcomes
ACPA Prevents Lung Fibroblast-to Transformation by Reprogramming the Tumor Microenvironment through NSCLC-Derived Exosomes
No full textNemutlu, Emirhan/0000-0002-7337-6215; Boyacioglu, Ozge/0000-0001-5240-8209; Kalali, Berfin Deniz/0009-0005-9528-0344; Korkusuz, Petek/0000-0002-7553-3915; Gelen-Gungor, Dilek/0000-0002-2089-2590; Reçber, Tuba/0000-0001-8257-7628Non-small cell lung cancer (NSCLC) accounts for most lung cancer cases. Current treatments often cause systemic side effects or lead to drug resistance, prompting the development of new therapies targeting tumors and related cells simultaneously. Cancer-associated fibroblasts (CAFs) are crucial stromal cells within the tumor microenvironment (TME), making them potential targets for therapy. Previously, we found that the CB1 receptor agonist ACPA has anti-tumor effects on NSCLC, inhibiting pathways such as Akt/PI3K, JNK, glycolysis, the citric acid cycle, and the urea cycle both in vitro and in vivo. We hypothesize that ACPA could enhance therapy by inhibiting the transformation of lung fibroblasts into CAFs via exosomes. Control and ACPA-treated NSCLC cell exosomes exhibited similar size, PDI, ZP, and high expression of CD9, CD63, and CD81. ACPA-treated exosomes showed reduced levels of miR-21 and miR-23. These exosomes decreased fibroblast viability within 12 h by disrupting pentose phosphate, lipid, and amino acid metabolism, and by lowering PDPN, alpha-SMA, and FAP expressions. This research highlights ACPA as a promising chemotherapeutic agent, capable of improving NSCLC treatment and reprogramming the TME with more targeted therapies.Hacettepe University Scientific Research Projects Coordination Unit [TSA-2023-20427]This study was supported by Hacettepe University Scientific Research Projects Coordination Unit (TSA-2023-20427)
Threshold Structure-Preserving Signatures With Randomizable Key
No full textDigital signatures confirm message integrity and signer identity, but linking public keys to identities can cause privacy concerns in anonymized settings. Signatures with randomizable keys can break this link, preserving verifiability without revealing the signer. While effective for privacy, complex cryptographic systems need to be modular structured for efficient implementation. Threshold structure-preserving signatures enable modular, privacy-friendly protocols. This work combines randomizable keys with threshold structure-preserving signatures to create a valid, modular, and unlinkable foundation for privacy-preserving applications. © 2025 by Paper published under CC license (CC BY-NC-ND 4.0)
Polysulfur Copolymer as a Support Material for the Preparation of a Novel Multifunctional Photocatalytic Composite Material
Full text linkOne-step addition of magnetic nanoparticles and titanium dioxide nanoparticles into polysulfur copolymer as cheap and available support was reported for the first time to prepare the magnetically separable heterogeneous catalyst, PolyS-MNP-TiO2. The photocatalytic activities of the PolyS-MNP-TiO2 composite material and its constituents were examined in the methylene blue (MB) degradation, textile-based wastewater simulant, exposed to solar light. Detailed characterization of the catalysts was performed with SEM, TEM, and EDX measurements. The photocatalytic activity of the resulting composite was figured out in the removal of methylene blue dye by using a solar simulator. Significantly, the as-prepared PolyS-MNP-TiO2 exhibits exceptional photocatalytic activity and total degradation of dye molecules was achieved in 60 min. Additionally, the prepared novel photocatalyst showed enhanced stability and reusability due to the magnetic behavior of the composite material and the same portion of catalyst was used in five successive tries without apparent loss in catalytic activity by eliminating long and work-loaded processes like filtration and centrifugation.Scientific and Technological Research Council of Turkiye (TUBIdot;TAK)Open access funding provided by the Scientific and Technological Research Council of Turkiye (TUB & Idot;TAK)
2023 Yılı Cumhurbaşkanlığı Seçimi: Recep Tayyip Erdoğan’ın Kampanya Stratejileri Üzerine Bir İnceleme
No full textPolitik pazarlama, siyasal seçim süreçlerinde seçmen tercihlerini şekillendirme, kamuoyu algısını yönlendirme ve seçim başarısını artırmada kritik bir rol oynamaktadır. Seçim süreçlerinde, siyasi partiler seçmen kitlesine ulaşabilmek, onların desteklerini kazanmak ve rakipleri karşısında üstünlük elde edebilmek için kapsamlı politik pazarlama stratejileri geliştirerek, uygulamaktadır. Bu çalışmada, örnek olay incelemesi yöntemi kullanılmıştır. Örnek olay kapsamında, Türkiye’de gerçekleştirilen 2023 Türkiye Cumhurbaşkanlığı seçimlerinde Adalet ve Kalkınma Partisi’nin (AK Parti) uyguladığı politik pazarlama stratejileri incelenmiştir. Seçim başarısında katkı sağlayan bu stratejiler, iletişim çabaları ve rekabet üstünlüğü elde etme yaklaşımları üzerine yoğunlaşmıştır. Çalışma bulguları, AK Parti’nin rekabet üstünlüğü elde etmesine vesile olan pazarlama iletişimi çabalarının on ana başlık altında incelenebileceğini göstermiştir. Bu stratejiler; seçim tarihinin belirlenmesi, stratejik zamanlama planının oluşturulması, sosyal medyanın etkin kullanımı, veri odaklı mikro hedefleme stratejisinin kullanılması, seçmen psikolojisini etkileyen duygusal katarsis, hikâye anlatımı kullanımı, tekno-milliyetçilik vurgusu, toplumsal bütünleşmeyi sağlayan ortak kültür vurgusu, farklı etnik ve dil gruplarına ulaşabilmek adına farklı dillerde mesajların iletilmesi ve pazarlama iletişimi tekniklerinin etkin kullanılması gibi yenilikçi yaklaşımları içermektedir. Kampanya sürecinde geliştirilen stratejiler ile farklı seçmen grupları ile etkili iletişim kurulmuş ve güçlü bir seçmen sadakati pekiştirilmiştir. Çalışma bulguları, politik pazarlamanın seçim süreçlerindeki belirleyici rolünü vurgularken, modern seçim kampanyalarının nasıl şekillendiğine dair önemli bulgular sunmaktadır. Pazarlama iletişimi ve politika arasındaki etkileşimi daha iyi anlamaya yönelik katkı sağlayan bu analiz, gelecekteki seçim kampanyalarına ışık tutabilecek niteliktedir