1,720,975 research outputs found
Clinical and statistical evaluation of the hypotensive effectiveness of 3 therapeutic plans in essential hypertension.
No full textThe analysis of variance and Student's "t" test were applied in an assessment of the hypotensive effectiveness of three hypotensive protocols: a) diazepam + amitryptiline; b) reserpine + chlorthalidone; c) all drugs in 57 and 32 patients with stabilised essential hypertension. Diazepam + amitryptiline proved effective, both alone and in protocol b)
Infants of Mothers with Cocaine Use: Review of Clinical and Medico-Legal Aspects
Full text linkIllicit drug use is a global problem that also affects pregnant women. Substance use and alcohol abuse during pregnancy may have various harmful consequences for both mothers and foetuses. Intrauterine exposure to illicit substances can be investigated through maternal reports and toxicological tests on mothers’ and/or newborns’ samples. While the negative effects of alcohol and opioid use on pregnancy, the foetus, and/or newborn are well established, the effects of cocaine use remain controversial. We performed a review of the literature to evaluate the current state of knowledge of the effects of intrauterine cocaine exposure on newborns’ and children’s long-term development and to highlight possible implications for health professionals dealing with women who use cocaine during pregnancy. Although intrauterine cocaine exposure has been associated with reduced infant measurements, no specific amount of cocaine use exerting such effects has been determined, and no long-term effects have been confirmed. The evidence of cocaine use during pregnancy justifies a clinical and social takeover of the mother and newborn without assuming that there will certainly be long-term damage related to intrauterine cocaine exposure, but also considering other possible associated factors
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
L'osteonecrosi asettica in corso di lupus eritematoso sistemico: contributo casistico.
No full textPresentazione di casi clinic di osteonecrosi asettiche in corso di LES e rassegna sintetica sull'argoment
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
Do malfunctioning bioprosthetic heart valves represent a potential thrombogenic focus?
No full textIn vivo platelet reactivity, expressed by plasma concentration of β-thromboglobulin (βTG) and platelet factor 4 (PF4), was determined in 57 patients with bioprosthetic heart valves: 35 had well-functioning bioprostheses (WFBP), while 22 had documented malfunctioning bioprostheses (MFBP). βTG and PF4 values in patients with WFBP were not significantly different from controls, even when these determinations were repeated at monthly intervals, whereas βTG and PF4 concentration was significantly higher in patients with MFBP compared to both groups. There was a strong positive correlation between βTG and PF4 in all subjects studied. Serum lactic dehydrogenase, indirect bilirubin level and reticulocyte count were significantly higher in patients with MFBP than in those with WFBP, but no correlation was found between platelet reactivity and rate of intravascular hemolysis. Our results suggest that there is an increased platelet release in vivo of the platelet-specific proteins in patients with MFBP not related to mechanical damage, and that bioprostheses, at least in a degenerative state, may represent a potential thrombogenic focus
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
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