WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

Permanent URI for this collectionhttps://hdl.handle.net/11147/7150

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  • Article
    Ensemble Machine Learning Algorithms for Thermal Comfort Prediction in HVAC Systems of Smart Buildings
    (Golden Light Publishing, 2025) Erdem, Merve Kuru; Gokalp, Osman; Calis, Gulben
    Predicting the thermal comfort of building occupants is of paramount importance in the operation of smart buildings, providing a data-driven approach to control Heating, Ventilation, and Air Conditioning (HVAC) systems for managing occupant thermal comfort and energy use, which aligns with modern sustainability and efficiency goals. Recently, ensemble machine learning (ML)-based thermal comfort prediction models have been proposed to provide more accurate estimation of thermal comfort; however, these efforts often lack a systematic and comprehensive evaluation across a wide range of ML models within a single study. To address this gap, this study presents a systematic comparative analysis of four ensemble ML frameworks (bagging, boosting, stacking, and voting) with six basic ML algorithms (Logistic Regression, K-Nearest Neighbors, Support Vector Machine, Decision Tree, Multilayer Perceptron, and Multinomial Na & iuml;ve Bayes) and six advanced ensemble ML algorithms (Random Forest, Rotation Forest, Extra Trees, Gradient Boosting Classifier, Histogram Gradient Boosting Classifier, and Extreme Gradient Boosting). The analysis is conducted using the widely recognized ASHRAE Global Thermal Comfort Database II, providing both 3-point and 7-point Thermal Sensation Vote (TSV) predictions. Accuracy, precision, recall and F1 metrics are used for evaluation and 10-fold cross validation is applied for further comparison. The results demonstrate the Histogram Gradient Boosting (HGB) algorithm achieved the highest F1 score (0.638) for 7-point TSV prediction whereas the Random Forest (RF) algorithm provided the highest F1 score (0.549) for 7-point TSV prediction. In practice, these findings suggest that integrating RF and HGB models into Building Management Systems or IoT-based HVAC platforms can support real-time adaptive control, helping practitioners to reduce energy use while maintaining occupant comfort.
  • Article
    The Association of Vertebrobasilar System Morphology and Geometry With the Posterior and Anterior Ischemic Stroke
    (Pera Yayıncılık Hizmetleri, 2025) Leblebici, Asım; Demirtas, İsmet; Ayyıldız, Sevilay; Ayyıldız, Behçet; Kuş, Koral Çağlar; Ayran, Ayşegül; Kurt, Mustafa Ayberk
    Objective: Morphometric and geometric variations in the vertebrobasilar system (VBS) may influence cerebral hemodynamics, potentially contributing to ischemic strokes in both anterior and posterior circulatory territories. This study aimed to investigate the association between VBS morphology and ischemic stroke localization. Methods: This retrospective observational study analyzed multidetector computed tomography angiography images from 431 patients (187 females, 244 males, mean age: 65.3 ± 14.6 years). Patients were categorized into three groups: anterior circulation ischemic stroke (ACIS, n=184), posterior circulation ischemic stroke (PCIS, n=88), and control subjects (n=159). Morphometric parameters were assessed using 3D Slicer software. Results: Significant differences in basilar artery (BA) length were observed between stroke groups and controls, with ACIS and PCIS groups exhibiting longer BA lengths (p<0.05). Males had significantly longer vertebral artery (VA) lengths than females in the control and ACIS groups (p value < 0.05). The vertebrobasilar junction angle was significantly wider in females than in males (p value = 0.046). BA bending was predominantly directed to the right across all groups, with no significant differences between the stroke and control groups. VA dominance was more frequent on the left in ACIS and the right in PCIS, while VA hypoplasia was less common in stroke patients compared to controls, contrary to previous reports. Conclusion: While certain morphometric and geometric variations in the VBS were observed, the evidence for a direct association between these characteristics and the localization of ischemic stroke was limited and inconclusive. These findings suggest that vertebrobasilar morphology may not independently determine stroke localization.
  • Article
    Soylulaştırmanın Kırsal Boyutu: Turizm, Tarım ve Sanayi
    (Kare Publ, 2025) Buldan, Ece; Akış, Tonguç
    Kırsal soylulaştırma, arazi özelleştirmesi ve yerinden edilme ile karakterize edilen bir süreç olup, 1990'larda devlet güdümlü mü- dahalelerin sisteme daha fazla entegre edilmesiyle yoğunlaştı. Soy- lulaştırma tarihsel referanslarını kaybederek, genelleşmiş bir olgu olarak kent merkezlerinin ötesindeki kırsal alanları da etkilemek - tedir. Bu özel gelişme, kentsel ve kırsal temeller üzerine yoğunla- şan çalışmalar üzerinden ele alınmaktadır. Günümüz söyleminde kırsal alanlar, sanayi kenti ve doğal kırsal ortamlar arasında birer hibritleşme alanı olarak tasvir edilmekte, bu alanların tüketimi, sermaye akışının etkilerini dışlamakta ve giderek daha fazla din - lenme ve turizm üzerinden şekillenmektedir. Küresel Güney ül - kelerindeki çalışmalar incelendiğinde, sanayileşme fonksiyonu da turizm ve ikincil konut sürecinin yanı sıra kırsal soylulaştırmaya katkı sağlamaktadır. Bu süreçler, hizmet ve üretim sektörlerinde ağırlıklı olarak ortaya çıkmakta, kentsel ve kırsal alanlar arasın - daki ayrımı bulanıklaştırarak araştırma ve kavramsallaştırmada zorluklar sunmaktadır. Bu boşluğu ele alarak, bu çalışma, güncel mekânsal sorunlar üzerinden kentsel-kırsal durumun bulanıklığını teorik bir katkı dahilinde bağlamsallaştırmayı amaçlamaktadır. Tu- rizm, sanayi ve tarımdaki dönüşüm süreçlerini inceleyerek, kırsal alan üretimine dair gelişmiş ve gelişmekte olan bağlamlarda tar- tışmalar sunmayı hedeflemektedir. Literatür taraması ve önemli örnekler üzerinde nitel araştırma yöntemleri kullanılarak, bu çalış- ma yeni demografik veriler aracılığıyla kentsel ve kırsal çalışmalar çerçevesinde kırsal soylulaştırmayı inceleyerek, bunun etkilerine ve uygulamalarına dair içgörüler sunacaktır. Buna uygun olarak, kırsal alana giren yeni sermaye akışının etkileri de araştırılacaktır.
  • Article
    A Cross-Domain Systematic Review on Guest Speakers in Higher Education: Reconsidering the Role of "outsiders" in Architecture Education
    (Yildiz Technical Univ, Fac Architecture, 2024) Kasali, Altug; Akış, Tonguç; Abdel-aziz, Dania
    Guest speaker events, as a form of instructional strategy in higher education settings, has long been recognized as a valid pedagogical method, whereas the factors that either promote or hinder the efficacy of this strategy in architecture education has not been extensively investigated. Accordingly, this paper presents a cross-domain literature review on the topic. The findings of the review have led to a discussion on guest speakers in design studios as an effective manifestation of inquiry-based learning (IBL). By searching 8 databases using the PICO framework, a systematic literature review was conducted to an in-depth examination of 35 articles across 25 domains in higher education, followed by a thematic analysis considering Braun and Clarke’s approach. The interpretive analysis yielded six themes: (1) bridging academia and practice, (2) speaker selection, (3) event planning, (4) content and format, (5) interaction mode, and (6) students’ preferences. While incorporating guest speakers can enhance student engagement, critical thinking, and networking, successful implementation hinges on addressing several factors such as the role of instructors’ guidance and tailoring topics and guest speakers’ selection with students' levels. Students' engagement with guest speakers in exploring content, issues, real-world perspectives and questions aligns with experiential learning and IBL principles. The study underscores the need for additional research in architecture education to understand students’ and instructors’ perceptions, concerning the role of guest speakers particularly on issues like contributions to learning, influence on design approaches and the implications for developing collaborative pedagogical practices.
  • Article
    Housing Instability and Roma Children's Educational Engagement: Perspectives From Teachers and Volunteers
    (Istanbul Univ, Fac Letters, dept Sociology, 2024) Uştuk, Ozan
    Inequalities experienced by the Roma remain a complex challenge, particularly in education. Despite various initiatives, their impact on the Roma communities’ daily lives has been limited. This article is based on applied research aimed at reducing early school-leaving rates among Roma children in Türkiye. The study highlights that the high rates of early school leaving cannot be fully understood without considering the profound impact of housing instability on their educational experiences. By exploring the intersection of educational challenges and housing insecurity through the perspectives of elementary school teachers, preschool teachers, and volunteering university students engaged with a Roma community, the findings reveal that the constant threat of displacement and inadequate living conditions severely disrupt educational engagement, undermining the stability necessary for academic success. However, these perspectives also expose critical gaps in understanding, particularly among educators who often overlook the significance of housing insecurity in shaping educational outcomes. By situating these challenges within the broader context of systemic housing issues, this research underscores the need for comprehensive, community-based interventions that address the root causes of educational inequities among Roma students. The study advocates for a holistic approach to educational equity—one that addresses both the material and psychological dimensions of housing insecurity, thereby creating pathways for genuine social mobility and inclusion for Roma children.
  • Article
    Ai-Assisted Survival Prediction in Colorectal Cancer: a Clinical Decision Support Tool
    (Dokuz Eylul Univ inst Health Sciences, 2024) Misirlioglu, Huseyin Koray; Leblebici, Asim; Calibasi-Kocal, Gizem; Ellidokuz, Hulya; Basbinar, Yasemin
    Purpose: This study was planned to determine the problems and affecting factors that children encounter Purpose: Colorectal cancer (CRC) is a leading cause of cancer-related mortality worldwide. Accurate survival prediction is crucial for advanced-stage patients to optimize treatment strategies and improve clinical outcomes. This study aimed to develop an artificial intelligence-assisted clinical decision support system (CDSS) for survival prediction in CRC patients using clinical and genomic data from the Cancer Genome Atlas Colon Adenocarcinoma Collection (TCGA-COAD) dataset. Methods: Machine learning algorithms, including C4.5 Decision Tree, Support Vector Machines (SVM), Random Forest, and Naive Bayes, were employed to create survival prediction models. Clinical parameters and genomic data from key pathways, such as glycolysis/gluconeogenesis and mTORC1, were integrated into the models. The models were evaluated based on accuracy and performance. Results: The Random Forest algorithm achieved the highest accuracy (82.3%) when only clinical parameters were used. When clinical data were combined with gene expression data, the model's accuracy increased further. The resulting models were incorporated into a user-friendly web interface, SurvCOCA, for clinical use. Conclusions: This study demonstrates the potential of AI-based tools to improve prognosis predictions in CRC patients. Further research is needed, with larger datasets and additional machine learning algorithms, to enhance clinical decision-making and optimize treatment strategies.
  • Article
    İzmir’in Toplu Ulaşım Sisteminin Doğrusal Programlama ve Duyarlılık Analizi Aracılığıyla Optimizasyonu
    (Pamukkale Univ, 2024) Görgülü, Çağla; Görgülü, Lale; Duvarcı, Yavuz
    Bu çalışma, enerji tüketimi, seyahat süresi ve ulaşım ücreti perspektiflerinden toplu ulaşım problemlerine odaklanmaktadır. Çalışmanın amacı İzmir örneğinde görülen benzer ulaşım sorunlarına yönelik güzergâh açısından karşılaştırılabilir olan tramvay ve otobüs sistemleri için en iyi çözümleri sunmaktır. Ayrıca, bu çalışma farklı ulaşım tipleri arasındaki bütünleşme konusuna dikkat çekmektedir. Çalışmada kullanılan yöntemler doğrusal programlama ve duyarlılık analizidir. Bu çalışma için hem tramvay hem de otobüs hattına sahip dokuz rota belirlenmiştir. Hangi ulaşım tipinin daha uygun veya kullanışlı olduğunu, bunların olumsuz ve olumlu sonuçlarının neler olduğunu ve hangisinin çevre dostu ve yolcu bütçesine dost olduğunu incelemek üzere aynı aktarma noktalarını paylaşan rotalar seçilmiştir. Doğrusal programlama Microsoft Excel® yazılımının bir uzantısı olan çözücü aracıyla gerçekleştirilmiştir. İlk olarak, amaç fonksiyonları en küçük enerji tüketimi, en küçük rota uzunluğu ve en küçük yolcu ücreti olarak tanımlanmıştır. Elde edilen enerji tüketimi, hız ve yolcu hacmi verileri optimizasyonların kısıtlarıdır. Son olarak, bulgular duyarlılık analizi aracılığıyla değerlendirilmiştir. Hem yolcular hem ulaşım işletmecileri için otobüs ve tramvay seçenekli en iyi sonuçlar tespit edilmiştir. En uygun rotalar Fahrettin Altay-Alsancak, Fahrettin Altay-Halkapınar, Mavişehir-Bostanlı ve Egekent-Bostanlı rotalarıdır. Bu çalışma, ulaşım maliyet matrisinin yanı sıra seyahat süresi matrisini kullanarak literatüre katkı sağlamaktadır. Böylece, bu araştırma sadece mali amaçlara değil, çevresel ve sosyal amaçlara da hizmet etmektedir.
  • Article
    Diverse Geographies of Urban Crisis: a Comparative Analysis of Egypt, India and Türkiye
    (Yildiz Technical Univ, Fac Architecture, 2024) Penpecioğlu, Mehmet; Bayırbağ, Mustafa Kemal
    The article concentrates on the reasons behind, and consequences of, the post-2008 urban crises experienced in the southern geographies of capitalism. It does so through a comparative analysis of three cases, namely India, Egypt, and Türkiye. The methodological approach in the article attempts to expand the scope of urban politics research to bring divergent cases into conversation. We argue that loosely defined, similar and different causes and/or repeated outcomes of urban crises across diverse cases could form an appropriate base for research in urban politics. The article brings the politics of redistribution in three cases/countries under the spotlight, focusing on four dimensions of the politics of redistribution: (dis)possession; exploitation; commons; and representation. While the last two dimensions dominated the scene in Egypt, in the case of Türkiye, it was about the politics of representation and exploitation. In India, the politics of (dis)possession and commons seem to constitute the center of urban politics. Furthermore, as the comparative analysis of the countries reveals, the role of the state and its historical and spatial configurations have played a strategic role in the formation of the politics of distribution. The comparative analysis also indicates that the variegated neoliberal urban policies have become successful or have failed in containing urban crises. The reasons for the success/failure in urban policies depend on three major factors: (1) the spatio-institutional design of the urban policy-making mechanisms; (2) the historical pattern of urbanization; (3) the role of the nation-state, especially the central government, in the politics of redistribution.
  • Article
    Defining the Impacts of Historical Development Activities on Urban Heritage of Iskenderun (alexandretta)
    (Konya Teknik Üniversitesi, 2023) Nalça Kıssaboylu, Canan; Kul, Fatma Nurşen; Rifaioğlu, Mert Nezih
    Iskenderun, also known as Alexandretta in antiquity, has long been a strategically significant port city in the Eastern Mediterranean thanks to its natural harbour. Due to its advantageous location, the settlement began to rapidly urbanize after the mid-19th century as a result of the impacts of Ottoman and later the French Mandate period development activities. This article focuses on defining the influences of historical development activities on the urban heritage of Iskenderun by understanding and evaluating various efforts that lie behind the formation of the city as an important trade centre and port city connecting the Middle East, Asia Minor, and Europe. By doing so, the formation, development and transformation of the settlement are chronologically deciphered regarding its historical turning points: the mid-19th century Ottoman period, the beginning of the French Mandate period (1919), and the joining of Iskenderun to the Republic of Turkiye (1939). Accordingly, the characteristics of the urban form, the ways these characteristics were transformed, and the problems and strategies encountered within different periods are decoded. This decoding employed a combined methodology, including historical interpretation and case study research methods. The results of the study reveal that Iskenderun has experienced different solutions for problems of infrastructure within the different periods, as a reflection of different political understandings and public and social needs among those periods.
  • Article
    Citation - WoS: 1
    Kent Plancısının Politik Rolü: Türkiye Deneyiminden Çıkarımlar
    (TMMOB Şehir Plancıları Odası, 2023) Özdemir, Esin
    Bu makale, planlama yazınında giderek önem kazanan kent plan- cısının politik rolüne odaklanmaktadır. Amacı, ilk olarak, özellikle teknokrat ve iletişimci/müzakereci plancı rollerine bir alternatif olarak savunulan plancının politik rolünün pratikteki anlamını ve somut düzeyde oluşabilecek politik rolleri ortaya koymak; ikinci olarak da, bunların karşısına çıkan olanak ve engelleri Türkiye ör- neği üzerinden tartışmaktır. Makale öncelikle politik rolün kuram- sal temellerine bakmakta, siyaset felsefesi alanındaki tartışmaları temel alarak, ‘politik olan nedir?’ sorusu üzerinde durmaktadır. Daha sonra, politik rolün planlama yazınındaki yerine bakılmakta ve iletişimsel planlamaya bu rol çerçevesinde yapılan eleştirilere yer verilmektedir. Bir sonraki bölümde; rant yaratma odaklı kentsel dönüşüm tehdidi altındaki mahallelere plancılar tarafından destek verme ve refakat etme süreçlerinde, yine plancılar tarafından ka- musal alanları savunmaya yönelik yürütülen muhalefet süreçlerinde ve Şehir Plancıları Odası tarafından neoliberal kentsel projelere karşı açılan davaları merkezine alan yasal süreçlerde somut anlam- da ortaya çıkan politik roller irdelenmektedir. Bu kapsamda; refa- katçi rol, kamusal alanları savunucu/aktivist rol ve yasal mücadeleci rol olmak üzere üç farklı politik rol ortaya konulmaktadır. Sonuç olarak makale, plancının teknokrat ve iletişimci/müzakereci rolü- nün yanında, planlama kararlarının veya mekânsal müdahalelerin niteliğine göre farklılaşan politik rollerinin de olduğunu savunmakta ve bu rollerin planlamanın demokratikleşmesi açısından gerekliliği- ni ortaya koymaktadır. Bununla birlikte, makale, plancının politik rolünün zaman boyutuna, diğer plancı rolleri ile ilişkiselliğine ve son olarak da sürekliliğine ve gücüne ilişkin çıkarımlarda bulunmaktadır.