1,721,132 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
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
Naming in Frontotemporal Dementia and its neural correlates
No full textThe study sought to understand the basis for naming problems in the behavioural form of frontotemporal dementia (bvFTD) through direct comparison with semantic dementia (SD) and examination of neural correlates. The data addresses the question whether naming problems in bvFTD arise secondary to patients' frontal executive disorder or occur independently as additional linguistic deficits. The data show test scores for 71 patients with bvFTD and 32 with SD on the Graded Naming test (a published challenging test of naming), the Manchester naming test (a less demanding test of picture naming) and a word-picture matching test that uses the same stimuli as the Manchester naming test (10 pictures of animals, 10 of fruits/vegetables, 10 articles of clothing and 10 household objects). The nature of naming errors is indicated for each test item and are summarised as separate variables. Naming errors are classified in terms of the following types: semantic (e.g. "dog" for rabbit), superordinate category (e.g. "animal" for rabbit), associative (this includes descriptions of an object's function, gestural demonstrations of its use and associated information e.g. "in Australia" for kangaroo), visually related misidentifications, omissions (which includes generic responses that convey insufficient information to convey recognition) and viable alternative responses (e.g. "coat" for jacket). The data also shows independent (blind) visual ratings of magnitude of atrophy based on coronal magnetic resonance scan images. Different regions of the frontal and temporal lobes are rated in accordance with the scheme defined by Davies et al Neuroradiology, 2009, 51, 491-503. Background clinical data includes scores on standard executive tests: verbal fluency, Weigls block sorting and Brixton spatial anticipation test. BvFTD patients, as expected, perform better than the SD group on the language test, but deficits are identified in about half of patients. There are strong inverse correlations between naming scores in both groups and atrophy in temporal lobe structures, particularly the temporal pole and fusiform gyrus, whereas comprehension in SD, measured by word picture matching, correlates more strongly with posterior than anterior temporal lobe atrophy. Error analysis shows a significant relationship in both groups between associative-type responses and temporal pole atrophy, whereas 'don't know' responses, suggestive of a loss of conceptual knowledge, correlates with more posterior temporal regions. There is some correlation in bvFTD between naming and executive performance but not frontal lobe atrophy. The data support the view that naming problems in bvFTD can arise independently of 'frontal' executive deficits and highlight clinical overlap with bvFTD. The findings have implications for the hub-and-spoke model of semantic memory and argue against the notion of the temporal pole as a semantic hub
Brixton test data in bvFTD and SD
No full textThe Brixton Spatial Anticipation Test is a widely used test of executive function. There has hitherto been surprisingly little systematic examination of the usefulness of the test in behavioural variant frontotemporal dementia (bvFTD), the prototypical degenerative disorder of the frontal lobes. The dataset relates to a study that explored the sensitivity and specificity of the Brixton test through a direct comparison of 76 patients with bvFTD and 34 with semantic dementia (SD), characterised by degeneration of the temporal lobes. All patients had been referred to a specialist cognitive clinic within a neuroscience centre and the Brixton test had been administered as part of their clinical diagnostic work-up. The study of patients' Brixton performance investigated both quantitative (error scores, sets achieved) and qualitative (error types) aspects of performance. bvFTD patients, as predicted, performed significantly more poorly than SD patients and achieved fewer sets (i.e. identified fewer rule shifts). bvFTD patients were distinguished too by more frequent perseverative and random errors. Perseverations could be subdivided into those representing repetition of an immediately preceding response, an immediately preceding rule, or an earlier rule that is not the immediately preceding one. A distinction could also be drawn between perseverations of the immediately preceding rule that take note of the position of the blue circle (stimulus-related) and those that do not (stimulus unrelated). bvFTD patients could be distinguished from SD by the presence of the latter. The data confirm the value of the Brixton test in the clinical assessment of bvFTD and point to the clinical and theoretical value of analysis of errors
VR_Stab: Perceptual Stability in VR
No full textData and analysis code (for R) supporting paper submitted to Perception in early 2022: “Investigating distortions in perceptual stability during different self-movements using Virtual Reality” by Paul A. Warren, Graham Bell and Yu L
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