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Biocontrol Potential of Vibrio Maritimus Chitinase: Heterologous Expression and Insecticidal Activity Against Acanthoscelides Obtectus
No full textIn this study, the chitinase gene from the marine bacterium Vibrio maritimus was heterologously expressed in Escherichia coli, purified via affinity chromatography and tested for its insecticidal activity against the storage pest Acanthoscelides obtectus. The recombinant VmChiA protein exhibited a molecular mass of similar to 60 kDa, with optimum activity observed at pH 6.0 and 40 degrees C. Enzyme kinetic analysis revealed a K-m value of 0.042 mM, V-max of 17.48 mu mol min(-1), k(cat) of 1.75 min(-1) and catalytic efficiency of 41.61 mM(-1) min(-1), respectively. Furthermore, a dose of 40 U mL(-1) of recombinant VmChiA showed similar efficacy to malathion insecticide against A. obtectus, with 100 % mortality in both treatments. LC50 and LC90 values of VmChiA were 13.95 U mL(-1) and 27.66 U mL(-1), respectively. Furthermore, the three-dimensional structure of the catalytic site of VmChiA was modeled. Molecular dynamics simulation technique was used to explore and analyze the dynamics and interactions. A salt bridge (GLU274-ARG296) in the alpha + beta domain was observed as a critical feature facilitating substrate (GlcNAc)(2) binding and enzymatic activity. These findings demonstrate that recombinant VmChiA possesses potent insecticidal properties, highlighting its potential as a bio-based, eco-friendly alternative for managing significant agricultural pests.Science Citation Index Expande
Optimizing Network Lifetime in Wireless Sensor Networks Through Efficient Data Transmission
No full textWireless sensor networks (WSNs) are integral to modern applications ranging from environmental monitoring to military operations. Despite their utility, the limited energy capacity of sensor nodes remains a critical challenge, particularly during the most energy-intensive task of data transmission. This paper introduces a novel clustering-based communication protocol designed to optimize energy efficiency and extend the network lifetime. Unlike traditional protocols such as LEACH and SEP, the proposed algorithm minimizes redundant data transmission by employing a control mechanism that detects and skips identical data in successive rounds. This innovation reduces energy consumption during communication between non-cluster head nodes, cluster heads (CHs), and the base station (BS). Simulations conducted in static, semi-dynamic, and dynamic environments demonstrate significant improvements in network stability, energy efficiency, and overall lifespan. These results position the proposed protocol as a robust solution for energy-constrained WSNs. © 2025 IEEE
The Figure of Stranger in 'The Other Side of Hope' And 'Limbo' Movies
No full textBu tez, kent sosyolojisinin 'yabancı' figürüne bakışını inceleyerek, bu bakışın sinemadaki yansımasını analiz etmeyi amaçlamaktadır. Araştırma, kent sosyolojisindeki 'yabancı' figürüne dair literatürü inceleyerek mevcut çalışmaların izini sürmekte ve bu literatürü Umudun Öteki Yüzü ve Limbo filmleriyle ilişkilendirmektedir. Teorik ve ampirik boyutları birleştiren bu inceleme, filmlerin sunduğu anlatı, fikirler ve görsel imgeleri merkeze alarak bir 'çifte okuma' (double reading) yöntemi benimsemektedir. Filmler, sosyolojik teorilerle etkileşim içinde okunarak, teorik kavramların somut örneklerle görünür kılınması sağlanmış ve bu doğrultuda filmlerin teorik çerçeveler ışığında analiz edilmesi mümkün kılınmıştır. Tez, teorik temelini Georg Simmel'in kent sosyolojisindeki 'yabancı' kavramına dayandırmakta ve bu tartışmayı Zygmunt Bauman ile Richard Sennett'in yabancı kavramına ilişkin çalışmalarıyla genişletmektedir Ayrıca, Giorgio Agamben'in istisna hali, kutsal insan ve kamp kavramları da teorik çerçeveye dahil edilerek analize politik bir boyut eklenmiştir. Bu teorik yapı, yabancı figürünün sosyolojik ve politik yönlerini kapsamlı bir şekilde ele alırken, sinema anlatılarının bu figürü nasıl yansıttığını incelemeye olanak tanımaktadır. Araştırma, sosyolojik teori ve sinema anlatıları arasındaki dinamik ilişkiyi ortaya koyarak hem yabancı figürünün toplumsal boyutlarını hem de bu figürün sinemadaki yansımasını kapsamlı bir şekilde incelemektedir.This thesis aims to examine the perspective of urban sociology on the figure of the 'stranger' and analyze how this perspective is reflected in cinema. The study reviews the literature on the figure of the 'stranger' within urban sociology, traces existing scholarly discussions, and relates these to the films 'The Other Side of Hope' and 'Limbo'. Combining theoretical and empirical dimensions, this analysis adopts a 'double reading' approach, centering on the narratives, ideas, and visual imagery presented in the films. The films are interpreted through their interaction with sociological theories, making theoretical concepts tangible through concrete examples and enabling their analysis within a theoretical framework. The thesis builds its theoretical foundation on Georg Simmel's concept of the 'stranger' in urban sociology and extends the discussion with Zygmunt Bauman and Richard Sennett's contributions to the concept of the stranger. Additionally, Giorgio Agamben's notions of the state of exception, *homo sacer*, and the camp are integrated into the theoretical framework, adding a political dimension to the analysis. This theoretical structure allows for a comprehensive exploration of the sociological and political dimensions of the figure of the stranger while examining how this figure is represented in cinematic narratives. By revealing the dynamic relationship between sociological theory and cinematic narratives, the research provides an in-depth analysis of both the social aspects of the stranger figure and its cinematic manifestations
The Relationship Between Perfectionism and Stress Generation: the Moderating Role of Looming Cognitive Style
No full textThe stress generation hypothesis suggests that certain maladaptive personality traits significantly contribute to the generation of negative life events (NLEs) in people's lives through inherent maladaptive mechanisms. Previous research indicated that the impact of stress generating risk factors might be augmented or weakened by other transdiagnostic risk factors such as the looming cognitive style (LCS) which includes physical and social looming that have been found to predict different domains of life stressors. Therefore, the present study aimed to examine the moderating roles of the dimensions of the LCS separately, in the relationship between perfectionism (i.e., socially prescribed perfectionism) and stress generation in a group of emerging adults. One-hundred and ninety nine (134 females) undergraduate students aged 18-25 (M = 20.23, SD = 1.56) completed an online questionnaire that measured their level of perfectionism, LCS, and NLEs twice over a six-week interval. The results showed that only social looming significantly moderated the relationship between socially prescribed perfectionism (SPP) and interpersonal NLEs at time 2. These findings show the augmenting impact of social looming on the stress generating effect of elevated SPP, highlighting the importance of examining co-occuring vulnerabilities rather than single risk factors in the stress generation process.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). The authors declare that they did not receive any funding.Social Science Citation Inde
A Hybrid Rough Aggregation Approach for the Selection of Artificial Intelligence-Based Industrial Cleaning Robots Used in Public Spaces From the Perspective of Urban Waste Management
No full textWaste management is becoming increasingly complex and challenging, especially in megacities with large populations. Unlike the past, when urban waste was simply collected and disposed of, modern waste management requires careful planning and execution of collection, separation, recycling, and reuse processes. Effective management of this complex system now needs more than just human effort. Integrating artificial intelligence (AI)-based systems into waste management can enhance waste reduction, reuse, and recycling effectiveness and efficiency. Selecting suitable AI-based cleaning robots (AI-ICR) for crowded public spaces, such as stations, train stations, and airports, poses complex decision-making challenges. The primary challenge is the novelty of the technology, which leads to uncertainties in selecting AI-ICRs. To address this challenge, we have developed a decision-making approach based on rough Archimedean-Dombi partitioned aggregation. This approach, termed "rough Archimedean-Dombi partitioned aggregation," combines the flexibility of Archimedean operators, the smoothness of Dombi operators, and the structured decomposition of Partitioned operators. This model is mainly chosen for its ability to handle the uncertainty and complexity inherent in multiple criteria decision-making (MCDM) processes. Leveraging rough numbers provides a robust framework for evaluating AI-ICRs under uncertain conditions. The main advantage of this model is its robustness, consistency, stability, and ability to handle complex uncertainties. We applied the proposed model to assess four AI-ICR alternatives identified through extensive research. We evaluated these alternatives using eighteen criteria established through comprehensive field studies. Based on the results, "Recycling cost (B12)" emerged as the most crucial criterion for selecting AIICRs. Additionally, the research identifies the SD45 manufactured by Peppermint Robotics Co. as the optimal AIICR candidate. Finally, the sensitivity and benchmark analyses to validate the proposed model confirm its robustness, consistency, and reliability.Science Citation Index Expande
Balancing Aspiration and Reality: Autarky in Turkish Defence Industrial Policy
No full textCountries with limited financial resources, internal markets, and human resources, such as Turkey, face significant challenges in achieving defence autarky and competing with multinational corporations in the international arms market. Consequently, the literature suggests that these countries should adjust their defence industrialisation goals to match their financial capabilities. However, Turkish decision-makers maintain a public discourse emphasising the goal of defence autarky despite the defence industry’s financial crises and structural problems. Even though there is a growing recognition of the limits of the pursuit of defence autarky, Turkey still needs to devise a defence industrial policy focusing on niche markets. This paper argues that the persistent rhetoric of defence autarky enjoys very strong public appeal in domestic politics. Defence industrialisation, coupled with nationalism, creates a zone of impunity for the ruling party. This dynamic allows the ruling party to deflect criticism by highlighting successes in defence production, directly appealing to nationalist sentiments. Ultimately, the political gains for the ruling elites outweigh financial limitations, preventing an open shift toward a more moderate defence industrialisation goal. © 2025 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group
Fictitious Conspiracy, Paranormal, and Pseudoscience Beliefs Are Closely Related To Their Regular Counterparts
No full textAlper, Sinan/0000-0002-9051-0690Belief in various types of Epistemically Suspect Beliefs (ESBs), such as conspiracy theories, paranormal phenomena, and pseudoscientific claims, tends to strongly correlate. However, the use of ESB scales in the literature, which often include phenomena frequently encountered in daily life with familiar content, challenges the clarity of inferences about this relationship. To address this issue, we developed a scale for Fictitious Epistemically Suspect Beliefs (FESBs), composed entirely of novel and fabricated statements related to conspiracy, paranormal activity, and pseudoscience. In Study 1, with a Turkish sample of 448 participants, we found that FESBs positively correlated with ESBs, despite consisting of less familiar claims. Moreover, both FESBs and ESBs showed similar associations with individual differences in worldview and cognition. These findings were replicated in a larger Turkish sample (N = 786) in Study 2, and a UK sample (N = 746) in Study 3. The results indicate that individuals with higher ESBs are more likely to endorse FESBs, despite having never encountered these claims before.Yasar UniversityWe thank Serkan Dolma, Eylul Deran Atalay, Kivanc Konukoglu, Aysenur Duzgun, Busra Elif Yelbuz, Ceyhun Yener, Isil Ayca Akkus, Gulben Baglicakoglu, Sezen Bagci, Fadime Sema Gundogdu for their work and assistance in our ongoing longitudinal research.Social Science Citation Inde
Exploring the Return Intentions of Turkish Immigrants in Canada
No full textGöç, dünya çapında toplumları şekillendirmeye devam ederken, geri dönüş göçü olgusu göç sürecinin kritik bir boyutu olarak giderek daha fazla ilgi görmektedir. Bu tez, Kanada'daki Türk göçmenlerin geri dönüş niyetlerini inceleyerek, ekonomik, sosyal ve duygusal faktörlerin kararlarını nasıl etkilediğini ele almaktadır. Nitel görüşmeler ve nicel anketleri içeren karma yöntem yaklaşımını temel alan araştırma, bireylerin Kanada'daki zorluklarla nasıl başa çıktıklarını ve Türkiye ile olan bağlarını nasıl koruduklarını araştırmaktadır. Bulgular, yaşam memnuniyeti, ekonomik fırsatlar ve kültürel bağların geri dönüş niyetlerini şekillendirmedeki rolünü vurgulayan göç teorileri çerçevesinde analiz edilmiştir. Kanada'daki nispeten az incelenmiş bir göçmen grubuna odaklanan bu çalışma, Türk göçmenlerin özgün deneyimlerine ve göç ile geri dönüş üzerine olan benzersiz bakış açılarına ışık tutmaktadır. Tez, aynı zamanda göç politikaları ve ulusötesi hareketliliğin değişen dinamikleri üzerine yapılan daha geniş tartışmalara da katkı sağlamaktadır.The phenomenon of return migration has drawn more attention as a crucial component of the migration process as migration continues to influence every country around the world. With an emphasis on the complex relationships between economic, social, and emotional factors that impact their choices, this thesis investigates the return intentions of Turkish immigrants in Canada. The study examines how people navigate challenges in Canada while preserving ties to Turkey using a multi-methods approach that includes both qualitative interviews and a quantitative survey. I analyzed the findings through emphasizing the role of life satisfaction, economic opportunities, and cultural ties in shaping return intentions. By addressing a relatively understudied immigrant group in Canada, this study sheds light on the specific experiences of Turkish immigrants and their perspectives on migration and return
A Machine Learning Approach to Steel Sheet Produciton Surface Quality
No full textÇelik sac üretim endüstrisi, inşaat ve otomotiv imalatı gibi çeşitli sektörlerin bel kemiği olarak büyük önem taşımaktadır. Bu endüstride yaygın bir sorun, çelik saclarda yüzey kalitesinin sağlanmasıdır. Yüzey kusurları, malzeme reddi, artan işleme maliyetleri ve nihai kullanım uygulamalarında potansiyel arızalar nedeniyle önemli mali kayıplara yol açabilir. Çelik sac üretiminde geleneksel kusur değerlendirme yöntemleri, büyük veri hacimlerini ve karmaşık kusur desenlerini ele almakta sınırlı kalmakla birlikte zaman alıcıdır. Makine öğrenimi tekniklerinin entegrasyonu, bu sınırlamaları aşmak için dönüşümsel bir potansiyel sunmaktadır. Bu tez, çelik sac üretiminde kusur değerlendirmesi için bir makine öğrenimi yaklaşımı geliştirmeyi amaçlamaktadır. Bu araştırmanın genel hedefi, insan bilgisini teknik (ürünle ilgili) verilerle bütünleştirerek kusur karar sürecini iyileştirmektir. Araştırma, 4 yıl boyunca birikmiş verileri kullanarak bir vaka çalışması yaklaşımını benimsemektedir. Çelik yüzey kusurları, karar destek sistemleri, sınıflandırma algoritmaları ve metin madenciliği üzerine bir literatür taraması yaptık. Çalışma, üretimde kusurları tespit etmeyi ve onarımını hedefleyerek, kusursuzluğu sağlamayı ve kusur tespiti ve onarımı ile ilgili kararları optimize etmeyi amaçlamaktadır. Çalışmanın metodolojisi, farklı sınıflandırma tekniklerini karşılaştırmayı ve bu sonuçları metin işleme uygulamaları ile geliştirmeyi içermektedir. Metin verisi dahil edilmeden yapılan kusur kararına yönelik sınıflandırma algoritması oluşturma sonuçları, çok sınıflı doğası nedeniyle yaklaşık %30 hata oranı vererek umut verici değildir. Çalışma ayrıca metin verisinin varlığının sınıflandırma algoritmalarının performansını artırarak hata oranını yaklaşık %24'e düşürdüğü sonucuna varmaktadır. Bu sonuçlar, çelik sac kusur karar sürecinde metin verilerinin önemini göstermektedir.The steel sheet production industry is of paramount importance, serving as the backbone for various sectors including construction and automotive manufacturing. A prevalent issue within this industry is the assurance of surface quality in steel sheets. Surface defects can lead to significant financial losses due to material rejections, increased processing costs, and potential failures in their end-use applications. Traditional methods for defect evaluation in steel sheet production, which rely heavily on manual inspection, are not only time-consuming but also limited in their ability to handle large data volumes and complex defect patterns. The integration of machine learning techniques presents a transformative potential to overcome these limitations. This thesis aims to develop a machine learning approach for defect evaluation in steel sheet production. The overall goal of this research is to improve the defect decision process by integrating human knowledge with technical (product related) data. The research adopts a case study approach by employing the data accumulated over 4 years. We conducted a literature review on steel surface defects, decision support systems, classification algorithms, and text mining. The study focuses on the detection and repair of defects, aiming to eliminate defects in production and optimize decisions related to defect detection and repair. The methodology of the study involves comparing different classification techniques and enhancing these results with text processing applications. The results for building a classification algorithm for the defect decision without including the textual data are not promising by giving around 30% error rate due to the multiclass nature of the problem. The study also concludes that the existence of text data improves the performance of the classification algorithms by decreasing the error rate to around 24%. These results show the significance of the textual data of the steel sheet defect decision process
Change of the Built Environment in Jerusalem During the Late Ottoman Period (1840–1917)
No full textThe establishment of Jerusalem, the holy city of three monotheistic religions on a global scale, dates to 4000 BCE. The city has been settled by various civilizations and has had walls protecting its borders since ancient times. Throughout history, Jerusalem has been influenced by Assyrian, Babylonian, Persian, Hellenic, Roman, Byzantine, Islamic States, and Ottoman periods. The Ottoman Empire first took control of the city in 1517 and then again in 1840, when they regained dominance in Syria and Palestine. In 1841, Jerusalem was separated from the Damascus Province and directly linked to Istanbul. This marked a period of modernization for the Ottoman Empire, following the Tanzimat Edict of 1839. This led to significant changes in legal, administrative, social, economic, political, and zoning fields, transforming the appearance of Ottoman cities. This article will discuss how existing structures were managed in Jerusalem during the final period of Ottoman rule, the regulations for constructing new buildings, the preservation of ancient monuments, and the enforcement of new laws. © 2025 Elsevier B.V., All rights reserved