1,720,955 research outputs found
Kesirli Mertebeden Pseudo-Hiperbolik Kısmi Diferansiyel Denkleminin Homotopi Pertürbasyon Yöntemiyle Yaklaşık Çözümü
No full textBu çalışmada başlangıç değerlere bağlı kesirli mertebeden (Fractional order) Pseudo-Hiperbolik kısmi diferansiyel denkleminin homotopi pertürbasyon metoduyla çözümü incelenecektir. Kesirli mertebeden Pseoudo-Hiperbolik kısmi diferansiyel denkleminin farklı yöntemlerle çözümü mevcut olmasına rağmen homotopi pertürbasyon yöntemiyle çözümü daha kısa ve hata payı daha az olduğundan çözüm bu yöntemle yapılmıştır. Ayrıca Matlab programı yardımıyla tam çözüm grafik ile görselleştirilmiştir
Numerical solutions of fractional order Pseudo Hyperbolic Differential equations by finite difference method
Get PDFKesirli mertebeden diferansiyel denklemler mühendislik, fizik ve biyoloji gibi alanlarda matematiksel problemlerin modellenmesinde önemli yer almaktadır. Bu makalede kesirli mertebeden pseudo hiperbolik diferansiyel denklemler için bir başlangıç sınır değer probleminin sonlu fark metodu ile yaklaşık çözümleri araştırılmıştır. İlk olarak başlangıç sınır değer problemi için birinci mertebeden sonlu fark şeması oluşturulmuştur. Daha sonra bu sonlu fark şeması için kararlılık analizi yapılmıştır. Elde edilen teorik sonuçları desteklemek için örnek bir problemin farklı kesirli mertebeden türevlerinde gerçek ve yaklaşık çözümler için hata değerleri hesaplanmıştır. Uygulanan çözüm metodunun etkinliğini göstermek için bazı nümerik simülasyonlar verilmiştir.Fractional differential equations are useful for modelling mathematical issues in fields including engineering, physics, and biology. In this article, approximate solutions of an initial boundary value problem for fractional pseudo hyperbolic differential equations are investigated using the finite difference method. First, a first-order finite difference scheme is created for the initial boundary value problem. Then, stability analysis was performed for this finite difference scheme. In order to support the theoretical results obtained, error values were calculated for precise and approximate solutions in different fractional order derivatives of a sample problem. Some numerical simulations are also given to show the effectiveness of the applied solution method
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
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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