1,720,996 research outputs found
Is vascular stiffness associated with the diameter of the abdominal aorta?
No full textThe aim of this study was to assess the relationship between abdominal aortic diameter, arterial compliance and the traditional cardiovascular risk factors in a group of healthy elderly subjects. In this study we have described the relationships between abdominal aortic diameter and the most important cardiovascular risk factors, showing that arterial compliance plays an important role in explaining, and potentially determining the diameter of the abdominal aorta and may thus be a new index to early recognize people at higher risk of AAA
Transient vs enduring distress in late pregnancy using the EPDS: a brief longitudinal exploratory study
No full textBackground and Objective: The Edinburgh Postnatal Depression Scale (EPDS) is widely used to detect perinatal distress in women by one single administration. Recently, research has shown that during early pregnancy around half of the women scoring as ‘possibly depressed’ on the EPDS only have transient distress, when re-tested after few weeks. This finding may not occur if women are screened later in pregnancy, as their worries then may be more enduring; therefore an exploratory study was conducted to further investigate this issue. Methods: Pregnant women (N = 84) attending a public hospital in Italy completed the EPDS in their third trimester (x = 33 weeks) and again 8–42 days later (while still pregnant). They had not received professional mental health intervention in this time interval. Results: Approximately half of the women who initially scored high on the EPDS in late pregnancy no longer scored high just a few weeks later. Conclusions: Approximately half of women who initially score high on the EPDS when screened in pregnancy only have transient distress in both the second and third trimester. To label these women as being ‘possibly depressed’, and mixing them with women who show enduring distress, represents a possible weakness in research studies, and may also overburden clinical services. We would therefore recommend, as research and clinical practice, a second administration of the EPDS if a woman initially scores in the distressed range at any stage in pregnancy
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
Risk of cardiovascular, cardiac and arrhythmic complications in patients with non-alcoholic fatty liver disease.
Full text linkNon-alcoholic fatty liver disease (NAFLD) has emerged as a public health problem of epidemic proportions worldwide. Accumulating clinical and epidemiological evidence indicates that NAFLD is not only associated with liver-related morbidity and mortality but also with an increased risk of coronary heart disease (CHD), abnormalities of cardiac function and structure (e.g., left ventricular dysfunction and hypertrophy, and heart failure), valvular heart disease (e.g., aortic valve sclerosis) and arrhythmias (e.g., atrial fibrillation). Experimental evidence suggests that NAFLD itself, especially in its more severe forms, exacerbates systemic/hepatic insulin resistance, causes atherogenic dyslipidemia, and releases a variety of pro-inflammatory, pro-coagulant and pro-fibrogenic mediators that may play important roles in the pathophysiology of cardiac and arrhythmic complications. Collectively, these findings suggest that patients with NAFLD may benefit from more intensive surveillance and early treatment interventions to decrease the risk for CHD and other cardiac/arrhythmic complications. The purpose of this clinical review is to summarize the rapidly expanding body of evidence that supports a strong association between NAFLD and cardiovascular, cardiac and arrhythmic complications, to briefly examine the putative biological mechanisms underlying this association, and to discuss some of the current treatment options that may influence both NAFLD and its related cardiac and arrhythmic complications.<br/
Aortic valve sclerosis: a marker of significant obstructive coronary artery disease in patients with chest pain?
No full textDispelling 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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