TOBB ETU GCRIS Database
Not a member yet
9778 research outputs found
Sort by
Inverses and Determinants of Three Classes of Hankel Matrices
No full textBy means of matrix decompositions, we examine three classes of Hankel matrices, whose entries are reciprocal factorials, factorial quotients and binomial coefficients. Their determinants are evaluated in closed form and inverses are explicitly determined
Büyük Güçler ve Küresel Güney bağlamında BRICS+; Türkiye'nin yaklaşımı
No full textINTPOLSEC 3’ncü Uluslararası Güvenlik Kongresi 2024 Değişen Küresel Politika Ortamında Güvenlik / 2024 International Security Congress Security in the Changing Global Politics[No Abstract Available
Silindirik Gövdeleri Birleştirmede Kullanılan Cıvataların Sayısının, Boyutunun ve Flanş Geometrisinin Eniyilemesi için Tasarım Aracı Oluşturulması ve Analizle Doğrulaması
No full textBu tez, silindirik gövdelerin birleştirilmesinde kullanılan cıvataların sayısını, boyutunu ve flanş geometrisini optimize etmek için özel olarak tasarlanmış yeni bir tasarım aracının geliştirilmesini ve analitik doğrulamasını sunmaktadır. Cıvatalar, özellikle yük dağılımı, stres konsantrasyonu ve genel stabilite gibi faktörlerin çok önemli olduğu silindirik gövde montajlarında yapısal bütünlükte kritik bir rol oynamaktadır. Bununla birlikte, cıvataların optimum konfigürasyonu, malzeme özellikleri, geometrik kısıtlamalar ve mekanik gereksinimler dahil olmak üzere çeşitli faktörlerden etkilenen çok yönlü bir sorundur. Araştırma, cıvatalı bağlantı tasarımında kullanılan mevcut metodolojilerin ve araçların kapsamlı bir şekilde gözden geçirilmesi, eksiklerin ve sınırlamaların belirlenmesi ile başlamaktadır. Bu incelemeden elde edilen bilgilerden yararlanılarak, cıvata parametreleri ve yapısal performans arasındaki karmaşık etkileşimi dikkate alan bütünleşmiş bir tasarım aracının geliştirilmesi için sistematik bir yaklaşım önerilmektedir. Araç, farklı cıvata konfigürasyonlarını verimli bir şekilde simüle etmek ve değerlendirmek için gelişmiş hesaplama algoritmaları ve sonlu eleman analiz tekniklerini içermektedir. Tasarım aracının doğruluğunu ve güvenilirliğini sağlamak için titiz analitik doğrulama prosedürleri yürütülmektedir. Sonuçlar, aracın değişen koşullar altında cıvata davranışını tahmin etmedeki etkinliğini ve belirtilen performans kriterlerini karşılayan optimum tasarımlar üretme kabiliyetini göstermektedir. Ayrıca tez, geliştirilen aracın gerçek dünya mühendislik uygulamalarında kullanılmasının pratik sonuçlarını araştırmaktadır. Aracın çok yönlülüğünü ve farklı senaryolarda uygulanabilirliğini göstermek için çeşitli çalışmalar sunulmakta; tasarım sürecini kolaylaştırma, maliyetleri düşürme ve genel yapısal bütünlüğü geliştirme potansiyeli vurgulanmaktadır. Sonuç olarak, bu araştırma silindirik gövde montajlarında cıvata konfigürasyonunu optimize etmek için kapsamlı ve sağlam bir araç sunarak cıvatalı bağlantı tasarımının ilerlemesine katkıda bulunmaktadır. Geliştirilen araç, hesaplamalı modellemeyi analitik doğrulama ile entegre ederek, mühendislere cıvatalı bağlantılarla ilgili karmaşık zorlukları ele alırken optimum yapısal performans elde etmek için değerli bir kaynak sağlayacaktır.This thesis presents the development and analytical validation of a new design tool specifically designed to optimize the number, size and flange geometry of bolts used in the joining of cylindrical bodies. Bolts play a critical role in structural integrity, especially in cylindrical body assemblies where factors such as load distribution, stress concentration and overall stability are crucial. However, the optimal configuration of bolts is a multifaceted problem influenced by several factors including material properties, geometric constraints and mechanical requirements. The research begins with a comprehensive review of existing methodologies and tools used in bolted joint design, identifying gaps and limitations. Utilizing the knowledge gained from this review, a systematic approach is proposed for the development of an integrated design tool that takes into account the complex interaction between bolt parameters and structural performance. The tool incorporates advanced computational algorithms and finite element analysis techniques to efficiently simulate and evaluate different bolt configurations. Rigorous analytical validation procedures are carried out to ensure the accuracy and reliability of the design tool. The results demonstrate the tool's effectiveness in predicting bolt behavior under varying conditions and its ability to produce optimal designs that meet specified performance criteria. Furthermore, the thesis explores the practical implications of using the developed tool in real-world engineering applications. Several studies are presented to demonstrate the versatility of the tool and its applicability in different scenarios, highlighting its potential to streamline the design process, reduce costs and improve overall structural integrity. In conclusion, this research contributes to the advancement of bolted joint design by providing a comprehensive and robust tool to optimize bolt configuration in cylindrical body assemblies. By integrating computational modeling with analytical verification, the developed tool will provide engineers with a valuable resource to achieve optimal structural performance while addressing the complex challenges associated with bolted connections
Examination of Coping Strategies and Professional Factors in the Relationship Between Vicarious Trauma, Vicarious Posttraumatic Growth and Vicarious Posttraumatic Depreciation Among Psychologists Providing Psychosocial Support After the 2023 Kahramanmaraş Earthquakes
No full textBu çalışmada, 2023 Kahramanmaraş depremleri sonrasında psikososyal destek sağlayan psikologların deneyimlediği dolaylı travma (DT) incelenmiştir. DT ile hem dolaylı travma sonrası büyüme (DTSB) hem de dolaylı travma sonrası yıpranma (DTSY) arasındaki ilişkilerde başa çıkma stratejilerinin aracılık rolleri ve mesleki faktörlerin (süpervizyon ve travma eğitimi) düzenleyici rolleri araştırılmıştır. Örneklem, sosyal medyada aracılığıyla amaçlı ve kartopu örneklem yoluyla seçilen, deprem sonrası psikososyal destek sağlayan ve klinik ortamlarda çalışan 122 psikologdan oluşmaktadır. Veriler Demografik Bilgi Formu, Dolaylı Travma Ölçeği, Başa Çıkma Yolları Anketi ve Travma Sonrası Büyüme ve Yıpranma Envanteri - Genişletilmiş Versiyon kullanılarak toplanmıştır. Analiz sonuçları, kadere ve doğaüstü güçlere başvurmanın DT ile DTSB arasında aracı roller olduğunu göstermektedir. Hiçbir başa çıkma stratejisi DTSY'yi öngörmemiş veya DT-DTSY ilişkisine aracılık etmemiştir. Mesleki faktörlerden yalnızca süpervizyon DTSB'yi yordarken, süpervizyon ve travma eğitimi DTSY'yi yordamamış ve VT-DTSB/ DTSY ilişkilerini düzenlemememiştir. Bu bulgular, afet sonrası ortamlarda psikologlar için destek programlarına manevi başa çıkma stratejileri ve etkili süpervizyonu dahil etme ihtiyacını vurgulamaktadır. Güçlü yönler, sınırlamalar ve gelecekteki araştırmalar tartışılmıştır.This study examined the vicarious trauma (VT) experienced by psychologists providing psychosocial support after the 2023 Kahramanmaraş earthquakes. It explored the mediator roles of coping strategies and the moderator roles of professional factors (supervision and training on psychological trauma) in the relationships between VT and both vicarious posttraumatic growth (VPTG) and vicarious posttraumatic depreciation (VPTD). The sample included 122 psychologists who provided post- earthquake psychosocial support and worked in clinical settings, recruited via purposive and snowball sampling on social media. Data were collected using the Demographic Information Form, Vicarious Trauma Scale, Ways of Coping Questionnaire, and Posttraumatic Growth and Depreciation Inventory—Expanded Version. Results of analyses showed that both seeking refuge in fate and seeking refuge in supernatural forces mediated the relationship between VT and VPTG. No coping strategy predicted VPTD or mediated the VT-VPTD relationship. Of the professional factors, only supervision predicted VPTG, while neither supervision nor training on psychological trauma predicted VPTD or moderated the VT-VPTG/VPTD relationships. These findings emphasize the need to include spiritual coping strategies and effective supervision into support programs for psychologists in post-disaster settings. Strengths, limitations, and future research directions are discussed
Well-Poised Α-Series and New Fibonomial-Like Sums
No full textWe introduce various sum formulae involving products of two Fibonomial/Lucanomial coefficients or quotients of two such coefficients over a third one. In order to prove the claims we will convert them into their alpha -forms and then use known terminating well -poised alpha -series identities
The Use of Plastinated Specimens for Hybrid Education of Veterinary Anatomy
No full textWith the official announcement of the new type of coronavirus-induced COVID-19 outbreak as a global pandemic, an extraordinary situation that no one has ever encountered has started. Just as life was about to return to normal in Türkiye, two devastating earthquakes, centered in Kahramanmaraş, affected ten different cities. Many global and national developments in various fields, which are expected to happen in the distant future, were completed within 3 years. One of these fields was undoubtedly education. Hybrid learning is seen as a trending educational approach combining face-to-face and online learning. Plastinated specimens come to the forefront for hybrid education with various advantageous features. They are not only non-toxic, dry, odorless materials, but also can simulate the natural anatomic appearance in detailed manner. With the help of new-generation acrylic paints and dyes which can penetrate into tissues, plastinates offer a unique natural look rather impressive than any other techniques. Due to the features mentioned above, plastinates are also convenient materials for handling, transportation or storage. These issues will be discussed in our article in terms of compatibility with hybrid learning. The aim of this article is to give ideas and make suggestions about how plastinates, which have been used efficiently in anatomy practices and professional training, can be used in hybrid veterinary anatomy education. © 2024, Ankara University. All rights reserved
A Novel Chaotic Artificial Rabbits Algorithm for Optimization of Constrained Engineering Problems
No full textThis study introduces a novel metaheuristic algorithm of optimization named Chaotic Artificial Rabbits Optimization (CARO) algorithm for resolving engineering design problems. In the newly introduced CARO algorithm, ten different chaotic maps are used with the recently presented Artificial Rabbits Optimization (ARO) algorithm to manage its parameters, eventually leading to an improved exploration and exploitation of the search. The CARO algorithm and familiar metaheuristic competitor algorithms were experimented on renowned five mechanical engineering problems of design, in brief; pressure vessel design, rolling element bearing design, tension/compression spring design, cantilever beam design and gear train design. The results indicate that the CARO is an outstanding algorithm compared with the familiar metaheuristic algorithms, and equipped with the best-optimized parameters with the minimal deviation in each case study. Metaheuristic algorithms are utilized to succeed in an optimal design in engineering problems targeting to achieve lightweight designs. In this present study, the optimum design of a vehicle brake pedal piece was achieved through topology and shape optimization methods. The brake pedal optimization problem in terms of the mass minimization is solved properly by using the CARO algorithm in comparison to familiar metaheuristic algorithms in the literature. Consequently, results indicate that the CARO algorithm can be effectively utilized in the optimal design of engineering problems
An Analysis of Sports Announcer Talk in Turkish
No full textThe current study aims to describe macro and micro features of Turkish Sports Announcer Talk (SAT) quantitatively by applying a register analysis on reporting of a volleyball match. While analyzing the macro features, Reaser's (2003) communicative functions were taken into consideration whereas the micro features were analyzed based on the syntactic features described by Ferguson (1983). With this motivation, the first 15 minutes of two volleyball games reported by professional speakers on television during 2020 Tokyo Olympics were analyzed, and the results demonstrated that Turkish volleyball SAT demonstrates all macro structures framed by Reaser (2003) although most of the talk was spared for Action Description and Routines. Additionally, the contextual distribution of lexico-grammatical features Turkish SAT indicated that most of the syntactic features described by Ferguson (1983) as conventional were indeed functional in Turkish volleyball sportscasting context. Furthermore, some new syntactic features unique to Turkish SAT context were also detected. © 2023 Peter Lang Group AG, Lausanne. Published by Peter Lang GmbH, Berlin, Deutschland. All rights reserved
Evaluation of International Day for Biological Diversity 2024’s Social MediaPosts in Terms of Visual Communication Design
No full text7th EuroAsian Biodiversity Symposium (SEAB-2024) August 22 to 24, 2024Biodiversity refers to the variety of all life forms, namely plants, animals, microorganisms and their genetic material, within an ecosystem or worldwide. This term encompasses genetic diversity (genetic differences within a species), species diversity (number of different species) and ecosystem diversity (variety of different ecosystems or habitats). International Day for Biological Diversity is a global event celebrated every year on May 22nd and aims to raise awareness about the conservation and sustainable use of biodiversity. In 2024, social media posts made within the scope of this event have great importance in terms of visual communication. Visual content attracts attention more quickly and effectively than written content. Content is usually consumed quickly on social media platforms. Therefore, using visually appealing designs is important to attract the attention of the target audience and increase their engagement. Visual communication design helps to convey messages more effectively by simplifying complex information and making it easier to understand. Infographics, video content and graphical data presentations in particular make information understandable and attractive. This study aims to evaluate social media posts for the International Day for Biodiversity 2024 from a visual communication design perspective. Animated graphic designs were preferred in social media designs for the International Day for Biodiversity. Different language options were created to customize the target audience. In this way, the target audience was encouraged to re-share the message. In the teaser prepared for the International Day for Biodiversity 2024, the target audience is encouraged to participate with the phrase Share information about your event. #PartOfThePlan was preferred as the hashtag in the posts. In this context, a call for cooperation was made to stakeholders