1,720,962 research outputs found
Effect of strain rate on the mechanical behavior of additivemanufactured aluminum alloy after severe plastic deformation
No full textThis work presents the mechanical behavior of additive-manufactured AlSiMg alloy after severe plastic deformation (SPD). Equal Channel Angular Extrusion/Pressing (ECAE/P) is a wellknown SPD method used for mechanical property improvement via grain refinement in metals. In this study, 8 pass ECAP at 250°C ECAP process is conducted on AlSi10Mg which is manufactured by laser powder bed fusion (LPBF). Tensile tests were conducted at room temperature and at various strain rates to measure the strain rate sensitivity (SRS). With varying strain rate, there was appreciable change in the flow stress levels indicating that the severely deformed alloy exhibits negative SRS. Possible reasons for this mechanical response are explained based on the evolved microstructure to shed light on the parameters governing SRS in additive-manufactured alloys subjected to SPD.TÜBİTA
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Mevcut bir yapının yeni deprem yönetmeliğine (DBYBHY- 2007) göre performans değerlendirmesi
Get PDF06.03.2018 tarihli ve 30352 sayılı Resmi Gazetede yayımlanan “Yükseköğretim Kanunu İle Bazı Kanun Ve Kanun Hükmünde Kararnamelerde Değişiklik Yapılması Hakkında Kanun” ile 18.06.2018 tarihli “Lisansüstü Tezlerin Elektronik Ortamda Toplanması, Düzenlenmesi ve Erişime Açılmasına İlişkin Yönerge” gereğince tam metin erişime açılmıştır.Anahtar kelimeler: Doğrusal Elastik Yöntem, Doğrusal Elastik Olmayan Yöntem, Artımsal İtme Analizi, Performans DeğerlendirmesiYapıların deprem performanslarının değerlendirilmesi için son yıllarda geliştirilmiş bulunan elastik yöntemler ve statik itme analizine dayalı basitleştirilmiş nonlineer analiz yöntemleri, mühendislik uygulamalarında giderek daha yaygın olarak kullanılmaktadır.Bu çalışmanın amacı, yapının dayanım ve deformasyon (şekildeğiştirme) kapasitelerini belirleyerek ilgili performans düzeylerindeki deprem istemleri ile karşılaştırmak suretiyle, yapının performansını değerlendirmektir.Bu çalışmada kapasite kontrollü lineer çözümler ve deplasman kontrollü lineer olmayan çözümler yapılmıştır. Bunun için Türk deprem yönetmeliğindeki doğrusal elastik yöntem ve doğrusal elastik olmayan yöntemler kullanılmıştır. Bu yöntemlerin anlaşılabilmesi için zemin+5 katlı mevcut bir yapı üzerinde performans değerlendirilmesi yapılmıştır.Keywords: Linear Elastic Method, Nonlinear Method, Pushover Analysis, Performance EvaluationIn recent years, for performance evaluation of the existing buildings under the seismic loads, linear methods and the Nonlinear Static Procedure (NSP) based on pushover analysis have become extremely popular in structural earthquake engineering community.This study focuses on the seismic performance evaluation of the structures. This aim can be achieved by introducing linear and nonlinear methods for designing, analyzing and checking the design of structures so that they meet the selected performance objectives. Analysis procedures are capable of predicting the demands-forces deformations.In this study, have been done to determine the capacity demand imposed on a building expected to elastically and displacement to deform inelastically. For this, was used elastic and inelastic method for Turkish earthquake code. To illustrate these methods, have been done evaluation of the existing building on a simple ground+5 stories
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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