1,721,011 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
Acute Hemiplegia and Facial Palsy 4-Months after Acute Kawasaki Disease in a 31-Month Old Girl
No full textKawasaki disease (KD) is an acute systemic vasculitis of unknown pathogenesis that
affects small and medium-size blood vessels.
Coronary arterial lesions are the best known KD complications but many others are
well known and involve various anatomical districts in the acute and sub-acute period
of KD. Cerebral infarction revealed by acute neurological manifestations is extremely
rare, and till now true stroke events were reported only in the acute or sub-acute stage
of patients with KD.
We describe a 31-month-old girl referred to our Paediatric Emergency Unit for
the appearance of left hemiplegia and facial palsy 4-months after an acute episode
of an uncomplicated KD. Magnetic resonance imaging (MRI) and magnetic resonance
angiography (MRA) showed hyperintensity lesions due to cerebral infarction in the
absence of thrombosis or aneurysms of medium and large-vessels.
Recently, the use of MRI and/or SPECT in KD patients has outlined a great
variability in cerebro-vascular involvement showing various degrees of cerebral
hypoperfusion, with or without neurological symptoms. Considering the normality of
MRA studies in our patient we can assume that the appearance of stroke is due to a
progressive degeneration of her small vessels leading to an arteritic complication that
was not completely resolved after the previous acute KD illness. In conclusion and in
order to prevent long-term arteritic vascular damage, probably anti-platelet therapy
should be continued for more than 6 to 8 weeks also in patients without coronary
aneurismatic degeneration in the early KD stage
Cerebral Ischemic Involvement in Vogt-Koyanagi-Harada Disease
No full textPURPOSE:
To better define the convulsive status epilepticus (CSE) as a possible manifestation at the onset of Panayiotopoulos syndrome (PS) and to assess its prognostic value in these children.
METHODS:
Children with CSE and diagnostic criteria of PS were identified, followed clinically and compared with a group of patients with PS without CSE from 1993 to 2012.
RESULTS:
We identified 37 patients with CSE at the onset of PS. During the same period we identified 72 children with autonomic symptoms of PS without CSE. The first episode of CSE occurred at a mean age of 6.5 years. Generalized clonic seizures were the most common ictal event and one-third of the patients required admission to Intensive Care Units. Interictal EEGs showed occipital spike activity in 31 (83.7%) subjects. Only 14 (37.8%) patients were treated with valproic acid and for two of them (5.40%) it was necessary to administer other drugs. There were no intractable cases. The overall prognosis was excellent. After the first event, 15 subjects (40.54%) experienced at least another typical PS seizure, but all patients were seizure free at the last follow-up.
CONCLUSION:
CSE is not uncommon in PS and it may occur at the onset of benign childhood epilepsy, without leading to a poor prognosi
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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