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Milling force estimation using angular domain harmonics with Kalman filter using acceleration data İlme, Mert; Çalışkan, Hakan; Balkan, Raif Tuna; Department of Mechanical Engineering (2024-11-28) In order to make a contribution to the Industry 4.0 concept, today’s milling research is mainly focusing on the identification of the cutting process. To identify the cutting process, it is vital to know the cutting forces. Since directly measuring the force is costly and inconvenient, there is a need for a simpler way to indirectly estimate the cutting forces. In this thesis, a novel model-based estimation algorithm using the acceleration data is proposed. The model is based on a angular domain force model...
CHILDREN’S PARTICIPATION RIGHTS IN EARLY CHILDHOOD EDUCATION CLASSROOMS: A MULTIPLE CASE STUDY KARAN, Şeyda; Erden, Feyza; Department of Early Childhood Education (2024-12-20) The primary purpose of this study was to examine the enactment of children's participation rights in independent Turkish public early childhood education (ECE) schools, with a particular focus on the classroom discourses and the experiences of in-classroom practices during circle time. Framed within Lundy’s participation model, this study was conducted as a multiple case study to elaborate on the issue by exploiting the specifics of each case to form a conceptual level and holistic understanding. The partic...
THE ROLE OF COLLABORATION IN THE CAPITALIST ECONOMY: THE DIGITAL TURN Zagga, Betül; Akdere, Çınla; Department of Science and Technology Policy Studies (2024-11-28) This thesis contributes to the history of economic thought by showing what is missing in mainstream competition theories explaining the actual functioning of capitalism: collaboration. The thesis proposes two original synthesis on the practices of competition and collaboration together in the markets. In this context a new concept has born: coopetition. The thesis pushes the frontiers of the traditional Schumpeterian analysis to understanding of the functioning of the digital economy. Mechanisms related to ...
Development of silica fiber reinforced polybenzoxazine composites filled with alumina particles as ablative materials Küçük, İbrahim Egemen; Çınar, Simge; Department of Metallurgical and Materials Engineering (2024-11-13) The aerospace industry is seeking a replacement of phenolics to use in ablative materials because of their toxicity to human health. One of the most promising candidates is polybenzoxazine materials because of their extreme heat resistance and less toxicity. This thesis introduces thermal and mechanical properties improvement of polybenzoxazine materials by manufacturing a silica fiber-reinforced polybenzoxazine composite with the incorporation of submicron sized alumina particles. The flexural and interlam...
Charles Weitz, Resident Representation of the United Nations Technical Assistance Administration (UN-TAA) in Ankara, speaking during the ground- breaking ceremony for METU, Wednesday, 2 October 1957 (1957)
High entropy sulfides as cathode materials for thermal batteries Aşcı, Cem; Toparlı, Çiğdem; Department of Metallurgical and Materials Engineering (2024-11-22) Thermal batteries are primary batteries and are mostly utilized in military applications such as power supply for electronic units in guided missiles or satellites, and ejection seats in fighters. They exhibit high power density, long shelf life, which can be more than 25 years, and can perform under challenging operation conditions such as high acceleration and shock. Research on thermal batteries primarily focuses on developing new cathode materials to enhance electrochemical performance and meet evolving...
Tevfik İleri, Minister of Education. METU groundbreaking ceremony, 2 October 1957 (1957)
Holmes Perkins in the METU Campus Planning Office, July 8-11, 1957 (1957) From left to right: Bülent Sülüner, draftsman; Thomas Godfrey, acting dean, Holmes Perkins, dean of School of Fine Arts at Penn; Batur Ardıç, draftsman; Necmi Tanyolaç, Secretary General of METU.
Bringing to Light: The Challenges of Representing and Reasoning Common Sense Knowledge in AI Systems Kabadere, Zeynep; Zambak, Aziz Fevzi; Department of Philosophy (2024-12) This thesis, firstly, investigates the challenges of imitating common sense reasoning in artificial intelligence (AI) by focusing on three core issues: representing common sense knowledge, identifying tacit knowledge, and addressing the frame problem. In the first chapter, the study examines these challenges through the lens of knowledge representation, reasoning, and learning processes, highlighting their significance in enhancing AI's ability to handle everyday reasoning tasks. In the second chapter, the ...
Holmes Perkins, METU faculty, and students reviewing the Ağsak Village (near Kızılcahamam) project, June, 1957 (1957)
Marvin Sevely’s design for the METU emblem which is still in use today The METU emblem was designed by one of the oldest faculty members of the Faculty of Architecture, Marvın Sevely. The emblem, consisting of two interlocking circles representing the Eastern and Western worlds, symbolizes the unity of these two worlds within METU.
View of Eymir Lake in the METU Campus site in 1956 (1956)
View of the METU Campus site in 1956 (1956)
HEADS TO POTS, ANCESTORS TO ARCHITECTURE: SKULL CULTS IN EUROPE AND THE NEAR EAST THROUGH THE PALAEOLITHIC AND THE NEOLITHIC PERIODS (C. 150.000 – 6.000 BC) Karamurat, Cansu; Atakuman, Çiğdem; Sürer, Elif; Department of Settlement Archaeology (2024-12-18) Intricate post-mortem rituals, often termed “skull cults,” that emerged in the Near East during the Early Holocene (circa 12,000-8,000 BP), played a pivotal role in fostering social cohesion and driving social transformation during the significant socio-economic transition known as the Neolithic Period. However, skull cult rituals have typically been regarded as a localized phenomenon, confined to the specific temporal and spatial context of the Near Eastern Neolithic, with limited insight into their antece...
A Primer on Karmarkar's Algorithm for Linear Programming Paris, Quirino (1985) A new algorithm for solving linear programs has been proposed recently by N. Karmarkar. Instead of hopping from extreme point to extreme point along the boundary of the solution set, as the simplex method does, Karmarkar's algorithm cuts across the set of feasible solutions. As a solution procedure for solving very large-scale linear programming problems, the new algorithm shows great potential. In this paper, Karmarkar's algorithm is described. Also, although Karmarkar's paper does not provide any explicit...
Income Distribution and Domestic Terms of Trade in Turkey, 1978-1983: Estimated Measures of Inequality and Poverty Celasun, Merih (1986)
Turkey's New Open-Door Policy of Direct Foreign Investment: A Critical Analysis of Problems and Prospects Erdilek, Asım (1986)
Government Deficits, Consumption and Inflation in Turkey Gazioğlu, Şaziye (1986)
Turkey's Great Inflation Ery, Maxwell J. (1986)
Share Of Government in Gross National Product: Cross-Section and Time-Series Analysis, 1950-1982 Yaser, Betty S.; Thiaga Rajan, T.R. (1985) This paper provides data on elasticities of government revenues and expenditures for 28 countries for varying periods within the time span 1950-1982. Tour issues are briefly noted for which these results provide some elucidation.