Middle East Technical University Research Information System
Not a member yet
104897 research outputs found
Sort by
The relationship between perceived physical literacy and physical self perception of the high school students
No full text
A New Project of a Gulf-Based Regional Order in the Middle East
No full textSince 2020, the regional politics of the Middle East have been characterized by a series of normalizations between former foes. In this article I argue that this era can be understood as an attempt to establish a new regional order, which I term the Gulf-based regional order. While this initiative introduces new security, economic, and ideational components, it faces significant challenges, making its long-term sustainability uncertain
Significance of sequential earthquakes on seismic response of conventional building typologies
No full textThere are many cases of sequential earthquakes all over the world that have caused extensive damage and loss to the affected communities. The latest example is the recent 2023 Southeast Turkiye (also known as Kahramanmaras) earthquakes, which affected 11 populated cities in a short period of time. On the other hand, all design and analysis approaches in earthquake engineering are based on single earthquakes. Therefore this study focuses on the significance of sequential earthquakes on seismic response of conventional building typologies. The ultimate goal of this study is to assess the significance of sequential earthquakes and answer the questions like what are the common properties of events within the sequence to cause additional damage, which building types are the most affected ones from the sequential earthquakes and if there is an urgent need to revise seismic design and assessment methodologies to account for the effects of sequential events. For this purpose, an extensive ground motion database composed of 30 different sequential events from different parts of the world has been constructed. Since this study concentrates on the regional effects of sequential earthquakes rather than their effects on individual buildings, simplified structural models are employed to represent different classes of reinforced concrete (RC) and masonry buildings. A multi-parameter hysteretic model is used to carry out the dynamic analyses and obtain the response statistics. Structural variability is also taken into consideration. The obtained results reveal that sequential earthquakes, depending on the characteristics of the multiple events within the sequence, do really influence the damage state evolution in the considered building classes. Especially, sequential earthquakes cause damage evolution in moderate-code RC frame buildings by 15 %. In addition, most destructive sequential earthquakes are observed to be the ones with more than one event having M> 6.0 and magnitudes close to each other (i.e. MBRI>0.2) in addition to having closer distances to the epicenter of the considered event (distance<70 km). The results of this study indicate that some measures should be taken in future seismic codes in order to meet the increased demands on building structures when subjected to sequential earthquakes
Türkiye, Tayvan ve Japonya'daki Afetler Sonrası İyileştirme Çalışması: İyileştirme projelerine ve ulusal, yerel ve özel kuruluşların rollerine odaklanma
No full textFROM TECHNOCRATIC SMART CITIES TOWARDS DEMOCRATIC URBAN FUTURES: RECLAIMING THE RIGHT TO THE CITY
No full textİklim değişikliği, nüfus artışı, göç ve hızlı kentleşme küresel ölçekte kentleri büyük bir hızla, kökten dönüştürmektedir. İnsan merkezli inanç sistemleri ve neoliberal politikaların derinleştirdiği çevresel, mekânsal ve sosyal adalet sorunlarıyla karşı karşıya kalan kentler yeni ve alternatif çözümler aramaya yönelmiştir. Bu bağlamda ortaya çıkan akıllı kent girişimleri, daha verimli, üretken, daha hızlı ve performansı daha yüksek kentler vaat etmektedir. Ancak değişim içerisindeki bu ortamda, akıllı kent paradigması “kent hakkı” anlayışına ve bunun uygulamasına karmaşık yeni boyutlar getirmiştir. Tez, vatandaşların kent hakkı ve bununla bağlantılı olarak çevresel, mekânsal ve sosyal adalet sorularının akıllı kentin teknokratik uygulamaları tümüyle göz ardı edildiği eleştirisinden yola çıkmaktadır. Toplumsal adaleti tehdit eden temel faktörün, kentsel yönetişim ve mekânsal pratikler aracılığıyla depolitizasyon mekanizmalarına dönüşen teknoloji odaklı söylem ve uygulamalardan kaynaklandığını savunmaktadır. Bu bağlamda tez, akıllı kent teknolojilerinin vatandaşları ve kentlileri güçlendirme, katılımı artırma, kent üzerindeki haklarını yeniden kazanma ve demokratik bir kentsel geleceğe ulaşmasının potansiyelini araştırmaktadır. Bu doğrultuda, yönetişim ile ilişkili olarak akıllı kentin güç dinamikleri çerçevesinde, kentsel mekân ile ilişkili olarak sürekli değişen ve dönüşen kamusallık kavramı farklı örnekler üzerinden incelenmektedir. Tez, akıllı kent girişimlerinin şekillendirilmesinde daha geniş bir vatandaş katılımının potansiyelini vurgulayan politika ve uygulamalara ışık tutmaktadır.Climate change, population growth, migration, and rapid urbanization have been radically transforming cities at a rapid pace on a global scale. Confronted with environmental, spatial, and social justice challenges deepened by anthropocentric belief systems and neoliberal policies, cities have turned to seek new and alternative solutions. Smart city initiatives have emerged in this context, promising more efficient, productive, faster, and more performant cities. In this evolving landscape, however, the smart city paradigm has introduced new complexities to the understanding and realization of the “right to the city.” The thesis is built upon the argument that citizens’ right to the city and the questions of environmental, spatial, and social justice in relation to that are being critically undermined by the technocratic understanding of the smart city. It claims that the major underlying factor that threatens social justice stems from the technology-driven discourses and practices that translate into mechanisms of depoliticization through urban governance and spatial practices. In this context, the thesis explores the potential in the affordances of smart city technologies to empower citizens, increase their participation, reclaim their right to the city, and achieve democratic urban futures. Accordingly, the thesis examines the power dynamics of the smart city under the framework of governance, and the ever-changing interpretations of publicness in relation with urban space in different cases. Finally, it provides insight into policy and practice, stressing the potential of a greater extent of citizen participation in shaping smart city initiatives.</p
TWO-MACHINE FLOW SHOP TASK SCHEDULING USING A HYBRID GRAVITATIONAL SEARCH ALGORITHM CALLED SAGSA
No full textThe fundamental problem of task scheduling is how to strategically distribute a large number of jobs to appropriate processors while maximizing one or more goals under particular time and resource restrictions. Within a dual-machine sequential flow shop, this work explores the scheduling of (n) distinct activities, each with a different due time. Simulated Annealing (SA) and the Gravitational Search Algorithm (GSA) are synergistically integrated in a new hybrid metaheuristic algorithm we name SAGSA. The SAGSA algorithm starts the resolution process in two different stages: it first uses the SA algorithm to provide a preliminary solution, and then it applies GSA to improve this solution. The proposed solution uses a weighted objective function to reduce work delays, aligning with the requirements of timely production systems. This function evaluates the efficacy of the proposed solutions. We investigate four different situations that result from differences in temperature reduction methods and Markov chain modalities. We find and support the better scenario by means of thorough result analysis. Empirical data indicates that the SAGSA algorithm can identify optimum solutions as well as, if not better than, the state-of-the-art techniques in use today
Barriers to circular economy implementation in the construction industry: causal assessment model
No full textCircular economy (CE) offers a systems solution framework to create a closed-loop system that minimizes waste and maximizes resource efficiency. The construction industry has significant potential to adopt CE practices but faces several barriers that hinder its progress. This study investigates the causal relationship between the barriers to the wider adoption of CE in the construction sector in Kazakhstan, Malaysia, and Turkey, as part of a developing country perspective. To achieve this aim, a fuzzy decision-making trial and evaluation laboratory (DEMATEL) was used to analyze the barriers initially identified through a comprehensive literature review. Although Kazakhstan, Malaysia, and Turkey differ in many aspects, they share a common and vital factor in addressing the challenges associated with the adoption of CE: “governmental support through policy development and enforcement.” Another causal barrier they face is the inadequacy of their current infrastructure, which hampers the effective implementation of the CE concept. The results reveal that governments should lead the implementation process by encouraging and supporting the sector to overcome the resistance toward new business models or innovations. The fragmented nature of the sector, with its many stakeholders and complex supply chains, makes the implementation of CE practices challenging. This highlights the need for a coordinated effort (e.g., utilizing advanced construction technologies) by the stakeholders and decision-makers to overcome the challenges and promote the adoption of CE practices. As a pioneering research of its kind, this study holds immense significance for the forefront of the sector in three developing countries where the adoption of CE practices is still in its infancy. The research findings are expected to greatly assist practitioners and policymakers in developing countries in addressing the challenges toward an efficient and effective transition to circularity
Samanta Schweblin’in Kurtarma Mesafesi ve Mariana Enríquez’in Kara Suların Dibinde Eserlerinde Feminist Eko-Gotik
No full textLatin Amerika edebiyatında gotik, Avrupa’dakinden farklı olarak Orta Çağ kaleleri ve lanetli şatolarda değil, sıradan evlerde, gündelik hayatların içinde ortaya çıkmıştır. Günümüzde Samanta Schweblin, Mariana Enríquez, Mónica Ojeda ve Fernanda Melchor gibi 1970’li yıllarda ve sonrasında doğmuş olan kadın yazarların öncülüğünde “Yeni Latin Amerika gotiği” olarak anılan bir akım gelişmiştir. Gotik unsurları siyasi ve toplumsal meseleleri ele almak için kullanan bu yazarlar, korku edebiyatını siyasetin bir eleştirisi olarak yeniden canlandırmıştır. Arjantin edebiyatında askeri diktatörlüğün, devletin suistimallerinin, kadın cinayetlerinin ve uyuşturucu kaçakçılığına bağlı şiddetin yanı sıra ekolojik sömürü de korku unsuru olarak karşımıza çıkmaktadır. Gotik unsurların ekolojik krize verilen bir yanıt olarak belirmesi yeni bir edebi anlayışa karşılık gelir. Gotiği ekoeleştiri teorileri aracılığıyla ele alan ve “eko-gotik” olarak tanımlanan bu anlayışta doğa başlı başına tehditkâr bir alan olarak kurulur. Bu makalenin temel argümanına göre, Arjantin edebiyatında eko-gotik yaklaşım, doğayı sömüren ekstraktivist süreçlere dikkat çekmek ve bu süreçlerin kadınlar üzerindeki etkisini görünür kılmak için ekofeminist bir pozisyon almaktadır. Bu doğrultuda makalenin amacı Samanta Schweblin’in Kurtarma Mesafesi ve Mariana Enríquez’in Kara Suların Dibinde adlı eserlerini ekoeleştirel bir perspektiften inceleyerek Arjantin edebiyatında feminist eko-gotiğin nasıl geliştiğini ve hangi unsurlara dayandığını ortaya koymaktır.</p
New Insight into the Phylogenetics and Morphometrics of the Genus Acer L. (Sapindaceae) Native to Türkiye
No full textComprehending the phylogeny and evolutionary history of the Acer genus through regional studies is crucial for clarifying its biogeographical patterns. This study investigates the taxonomic status, morphological diversity, and phylogenetic relationships of 21 naturally occurring taxa of the Acer genus in Türkiye. It presents significant findings regarding the phylogenetic positions and morphological distinctions of all Acer taxa naturally found in Türkiye for the first time. We conducted a comparative study using 18 useful morphological features and sequence data from chloroplast DNA markers ndhF and trnL-F, as well as nuclear ribosomal DNA marker internal transcribed spacer. The results of the phylogenetic and morphometrical analyses offered reliable taxonomic clarifications, specifically for the taxa Acer hyrcanum subsp. tauricolum, Acer cappadocicum subsp. divergens endemic to Türkiye, Acer orthocampestre, and Acer cappadocicum subsp. cappadocicum. The monophyly of sections Acer, Ginnala, and Platanoidea was supported in chloroplast lineages. The majority of Acer phylogenetic positions in Türkiye exhibit close relationships with taxa native to the Eurosiberian phytogeographical region, likely influenced by the habitats created by the northern mountain ranges. Additionally, this study provides a novel insight into the origin in the Oligocene and diversification in the Miocene of Acer in Türkiye