1,720,957 research outputs found
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
Mapping groups associated with real-valued function spaces and direct limits of Sobolev-Lie groups
Get PDFLet be a compact smooth manifold of dimension (without boundary) and
be a finite-dimensional Lie group, with Lie algebra . Let
be the group of all mappings which are
for some . We show that can be made a regular Lie
group in Milnor's sense, modelled on the Silva space which is
the locally convex direct limit of the Hilbert spaces for ,
such that is the direct limit of the Hilbert-Lie groups
for as a smooth Lie group. We also explain how the (known)
Lie group structure on can be obtained as a special case of a
general construction of Lie groups whenever real-valued function
spaces on open subsets of are given, subject to simple
axioms.Comment: Extended preprint version, 37 pages. Starting point for first author
was earlier project "Regularity in Milnor's sense for direct limits of
infinite-dimensional Lie groups'
Lie groups of real analytic diffeomorphisms are -regular
Get PDFLet be a compact, real analytic manifold and be the Lie group of all
real-analytic diffeomorphisms of , which is modelled on the space
of real-analytic vector fields on . We study flows of
time-dependent real-analytic vector fields on which are integrable
functions in time, and their dependence on the time-dependent vector field.
Notably, we show that the Lie group is -regular in the sense that each
in has an evolution which is an
absolutely continuous -valued function on and depends smoothly on
. As tools for the proof, we develop new results concerning
-regularity of infinite-dimensional Lie groups, and new results concerning
the continuity and complex analyticity of non-linear mappings on locally convex
direct limits.Comment: v5: 47 pages; typos removed, minor improvement
Smoothing operators for vector-valued functions and extension operators
Get PDFFor suitable finite-dimensional smooth manifolds M (possibly with various
kinds of boundary or corners), locally convex topological vector spaces F and
non-negative integers k, we construct continuous linear operators S_n from the
space of F-valued k times continuously differentiable functions on M to the
corresponding space of smooth functions such that S_n(f) converges to f in
C^k(M,F) as n tends to infinity, uniformly for f in compact subsets of
C^k(M,F). We also study the existence of continuous linear right inverses for
restriction maps from C^k(M,F) to C^k(L,F) if L is a closed subset of M,
endowed with a C^k-manifold structure turning the inclusion map from L to M
into a C^k-map. Moreover, we construct continuous linear right inverses for
restriction operators between spaces of sections in vector bundles in many
situations, and smooth local right inverses for restriction operators between
manifolds of mappings. We also obtain smoothing results for sections in fibre
bundles.Comment: v2: 119 pages. Proof of Theorem 1.3 corrected, all results unchange
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
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