1,721,099 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
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
SOME SACCADIC EYE-MOVEMENTS CAN BE DELAYED BY TRANSCRANIAL MAGNETIC STIMULATION OF THE CEREBRAL-CORTEX IN MAN
No full textIn 15 normal subjects we investigated the effect on visually guided saccadic eye movements of giving a single transcranial magnetic stimulus through a circular coil centred at the vertex. In the normal paradigm, subjects fixated a target which moved randomly to the left or right by 11-degrees. The mean saccadic reaction time of 189 ms was increased by 40 - 50 ms if a magnetic stimulus was given in random trials some 60 ms prior to the expected onset time of control saccades. The duration and amplitude of the saccades was unchanged. The delay was smaller if the stimulus was given earlier in the reaction period, or if the coil was moved anterior or posterior to the vertex. Larger stimulus intensities produced longer delays. Three subjects were trained to produce express saccades (mean saccadic reaction times of 107 - 141 ms) in a 'gap' paradigm. The latency of these saccades, which are thought to be mediated by collicular mechanisms without involvement of the cortex, was not affected by magnetic stimulation. This suggests that magnetic stimulation delays normal visually guided saccades by an action on the cerebral cortex, rather than on the oculomotor centres of the brainstem. Five subjects made nontargeted saccades in darkness in response to an auditory stimulus. These saccades, like visually guided saccades, could be delayed by magnetic brain stimulation. We conclude that saccadic delay is produced by interference with cortical areas involved in the execution of saccades rather than by interfering with the perception of the visual or auditory 'go' stimulus. These probably include supplementary and frontal eye field and posterior parietal cortex. The fact that visually guided saccades emerged intact after the delay indicates that the instructions for amplitude and direction were stored separately from those involved in timing when the movement was to occur
EVIDENCE THAT TRANSCRANIAL MAGNETIC STIMULATION DELAYS SACCADIC EYE-MOVEMENTS BY INTERFERING WITH ACTIVITY IN OCULOMOTOR AREAS OF CORTEX IN MAN
No full textAuthor-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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