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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
First Order Approximation on the Basilica Julia Set
Get PDFWe consider the basilica Julia set of the quadratic polynomial P (z) = z^2 - 1, with its successive graph approximations defined in terms of the external ray parametrization of the set. Following the model of Kigami and later Strichartz, we exploit these graph approximations to define derivatives of functions defined on the fractal, an endeavor complicated by asymmetric neighborhood behaviors at approximated vertex points across levels, and by the topology of these vertices. We hence differentiate even and odd levels of approximations of the Julia set and construct, accordingly, normal derivatives corresponding to each level category at the vertices, given their assigned ray names. We also discuss how a localized harmonic function serves as the tangent line, from which local linear approximation near vertices are obtained
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
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On extremizers for certain inequalities of the k-plane transform and related topics
Get PDFThis dissertation is concerned with determining optimal constants and extremizers, functions which achieve them, for certain inequalities arising in harmonic analysis. The main inequality considered is the - inequality for the -plane transform. It was shown in cite{C84} that the -plane transform is a bounded operator from of Euclidean space to of the Grassmann manifold of all affine -planes in for certain exponents depending on and . Specifically, for and there exists a finite positive constant A_0>0 such that[ |T f|_{L^q(M)} leq A_0 |f|_{L^{p}(R^d)}.] Extremizers of the inequality have previously been shown to exist when by Baernstein and Loss cite{BL97}, when and is an integer, also in cite{BL97}, when and by Christ cite{C11}, and when for general by Drouot cite{D11}. In each of these cases, is an extremizer. When cite{BL97} or and cite{C11} this extremizer has been shown to be unique up to composition with certain explicit symmetries of the inequality. Chapter ref{chap:exist} contains two proofs that when is an integer, there exist extremizers, functions which achieve equality in the inequality with the sharp constant. Chapter ref{chap:unique} extends Christ's uniqueness result for the endpoint case from to general . In particular, we show that for for , the extremizing function is unique up to composition with affine maps. This is achieved by modifying the methods of cite{C11} to apply to functions which are only assumed to be measurable functions (rather than smooth functions). Chapter ref{chap:smooth} shows that when and are both integers, all extremizers are infinitely differentiable. This involves a family of weighted inequalities for the -plane transform and the analysis of a nonlinear Euler-Lagrange equation. Chapter ref{chap:IBL}, considers the related question of extremizing -tuples of characteristic functions for certain multilinear inequalities of Hardy-Riesz-Brascamp-Lieb-Luttinger-Rogers type. Extremizing -tuples are characterized in a special case. This chapter is joint work with Christ
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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