1,721,024 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Incidence of aphasia in acute stroke patients: PROSIT study
Full text linkBackground/Objective: Post stroke disability has been always related to motor impairment but
there are some evidences that cognitive disturbances such as aphasia may contribute to stroke
patients outcome. Data about the incidence and the contribute of aphasia on disability in stroke
are still lacking. The aim of this study is to evaluate the incidence of aphasia and to compare
clinical and demographic features in patients with and without aphasia. The populations
studied is part of the Italian PROSIT study conducted during 2001. Methods: 15 researchers
evaluated retrospectively 12.206 acute stroke patients’clinical records registering demographic,
clinical and neurological conditions. From the initial series unconsciousness patients
(2567) were excluded in order to avoid bias in aphasia estimation. The presence of aphasia was
registered when reported on the first neurological examination. Non specific test for aphasia
diagnosis were used. The 2 years follow-up was completed in 98% of patients. Results: Out
of 9953 stroke patients 26% were aphasic. Of these patients the 74% presented arm and/or
limb weakness that was in 82% on the right side, in 16% on the left side, in 2% bilateral.
Aphasia seemed to be more frequent in women than man (53% vs 47%) and in patients older
than 75 y.o. (59% vs 46%). Aphasic patients had a more severe stroke than non aphasics: 33%
of aphasics compared to 15% of non-aphasics (p 0.000) presented plegia in arm and/or limb
and 14% of aphasics compared to 12% of non aphasics (p 0.006) presented an ICH at CT
scan. Aphasics died more frequently than non aphasics during hospitalisation and at follow up
(10% vs 4% and 26% vs 16% respectively) and presented a more severe long term disability
(Rankin scale score 2) than non aphasics (48% and 34%, respectively). Conclusions: This
is the first study evaluating the incidence of aphasia in a wide Italian population of acute stroke
patients. We found the presence of aphasia in 26% of acute stroke patients according to
previous reports in other countries. The presence of aphasia is a component of long term
disability in stroke patients. These findings suggest the need to plan speech rehabilitation
programs all aphasic patients in order to reduce their long-term disability
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe 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
Full text linkWe 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
Pinning and Binding Energies for Vortices in Neutron Stars : Comments on Recent Results
Full text linkAuthor-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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