1,721,247 research outputs found
PROGNOSTIC IMPORTANCE OF LOW VISIT-TO-VISIT SYSTOLIC BLOOD PRESSURE VARIABILITY IN HIGH-RISK HYPERTENSION
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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
Impact of guidelines on hypertension control in the elderly
No full textBackground: Hypertension control is a crucial measure to reduce cardiovascular (CV) risk, and blood pressure (BP) treatment targets have been recently revised to address this issue. However, achieving the recommended goal may be challenging. Objective: We aimed to assess the prevalence of uncontrolled hypertension, according to the US hypertension guidelines, among elderly participants in an Italian nationwide epidemiological survey, the relevant clinical correlates, and the agreement with the application of the European guidelines. Methods: Elderly (≥65y) volunteers enrolled in an Italian nationwide survey underwent BP measurement using standard protocols. Uncontrolled hypertension was defined as BP≥130/80 mmHg. Agreement of this definition with those from European guidelines (≥140/90 mmHg; ≥140/80 mmHg) was tested using Cohen’s kappa. Self-reported information on modifiable/non-modifiable CV risk factors was also collected. Results: Of the 13,162 treated hypertensive elderly, 69.8% had uncontrolled hypertension. They tended to be overweight/obese men with diabetes. Overall agreement between US and European guidelines was poor to good (κ = 0.289, p<0.001 and κ = 0.691, p<0.001 based on the 140/90 and 140/80 mmHg threshold, respectively). Elderly participants with controlled hypertension were more likely to report a history of CV or chronic kidney disease. No difference in lifestyle habits was observed by BP control status. Conclusion: Real-world data identify limited concordance between guidelines in terms of BP target achievement among older hypertensive Italians and highlights the need to spread awareness of the CV risk, especially in the presence of diabetes and obesity
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
Spatial distribution of fire effects in forest using GIS tools
No full textDue to the past fire suppression in the North West of United States, fires increased both in number and intensity. This represents an increased threat for the human habitat as well as for the natural ecosystem. Many of the problems related to fires are reflected in an increased amount of runoff and erosion during rain events due to the detachment of the mineral soil exposed after the vegetation is burned.
We have statistically evaluated 14 environmental variables to determine the correlation between mineral soil exposed after a fire and topography as well as the spatial distribution of fire effects on the hillslope within 4 watersheds from the Boise Basin Experimental Forest in Idaho, USA. We have also developed a model for the mineral soil exposed after a fire. The environmental variables were determined using a Geographic Information System and the ground cover variables were measured in the field. The long term objective of the study was to determine the topographic features of the landscape that influence the distribution of fire in forests and its severity.
The results showed correlation between mineral soil exposed and 3 environmental variables: aspect, solar radiation and profile curvature, though only aspect and profile curvature were selected to model mineral soil prediction
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