1,720,968 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
From Alzheimer's disease retrogenesis: a new care strategy for patients with advanced dementia
No full textThere is evidence that exercise may reduce the progressive cognitive dysfunction of Alzheimer's disease (AD). However, no previous investigation has studiethe acute effects of adapted games (AG) on patients with AD. The aim of this study was to examine the acute effects of AG on the agitated behavior (rating scale Agitated Behavior Rating Scale [ABRS]) and cognitive performance (Test for Severe Impairment [TSI]) of patients with advanced dementia. Twenty patients (83±4 yrs) participated in AG and placebo activities (PL). Agitated behavior and cognitive performance were compared before and after 30 minutes of AG and PL. In the hour after the AG, agitated behavior decreased by ∼4 ABRS points and cognitive performance increased by ∼5 TSI points. On the contrary, after PL we found no change in agitated behavior or cognitive performance. Our data indicate that AG can momentarily reduce agitated behavior and increase the cognitive performance in participants with AD
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
Alzheimer’s disease: effects of aerobic training and cognitive stimulation on cortisol levels and behavioral disorders
No full textSundowning syndrome (SDS) in individuals with Alzheimer’s disease (AD) is a clinical phenomenon characterized by the intensification of neuropsychiatric symptoms during the sunset. Currently, there are no specific treatments for SDS, but recent literature reported a strong relationship between high levels of cortisol and SDS symptoms. Both aerobic training (AT) and cognitive stimulation (CS) are capable to reduce the level of cortisol. However, it is not clear if SDS symptoms would benefit from AT and CS.
PORPUSE: To evaluate the effects of AT and CS as potential treatments of SDS. The combination effects of AT and CS (AT+CS) was also assessed.
METHODS: Eighty patients with advanced AD (Clinical Dementia Rate CDR2) were randomly assigned to: CS group (n: 20, 86±9 yrs), which was treated with a cognitive stimulation; AT group (n: 20, 84±7 yrs), treated with aerobic training; CS+AT (n: 20, 85±8 yrs) group, which performed both AT and CS. All groups were compared with a control group of AD patients treated with standard pharmacological therapy: CTRL (n: 20, 84±10 yrs). All treatments were performed 5 days a week, for 2 months, one hour before the sunset. Salivary levels of cortisol were collected 5 times a day before and after treatments, together with behavioral disorders test (Neuropsychiatric Inventory (NPI)).
RESULTS: After the training period, cortisol levels decreased significantly in AT -50% and CS+AT -50%, while at contrary was similar to baseline in CS and CTRL. Similarly, behavioral disorders reduced by ~50% in AT and CS+AT groups.
Dates are summarized in table 1 (Tab.1).
CONCLUSION: The main outcome of this study was that a program of AT or the combination of AT and CS decreased the salivary levels of cortisol. Interestingly, SDS symptoms also decreased to a similar extent in the same groups, suggesting a possible strengthening of this neuro-endocrinal pathway associated with these interventions, and suggested that AT and AT+CS as potential treatments of SDS
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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