1,720,956 research outputs found
Carotid atheroma characterization by carotid echo doppler : study of correlations between carotid and coronary artery atheroma.
No full textContexte : L'echodoppler carotidien (EDC) est un outil pour définir le risque cardio-vasculaire (RCV) mais peut progresser dans ses indications et dans les paramètres mesurés. Les travaux 1-2-3 étudient les correlations échographiques de l'index de volume de plaque (IVP). Les études 4-5 étudient l’apport de l’EDC dans l'évaluation du RCV des patients avec syndromes coronaires aigus (SCA). Matériels: les études N°1-2-3 ont été réalisées sur 93 patients avec EDC. Les études 4-5 ont été réalisées sur 152 patients avec SCA et EDC systématique. Les analyses sont transversales et longitudinales. Résultats : L'IVP n’est pas corrélé aux paramètres usuels de quantification de l’athérome carotidien. Il est plus sensible que le degré de sténose pour mesurer les changements de la plaque d’athérome. L'EDC chez tous les patients atteints de SCA est peu rentable. Ciblé aux patients âgés et diabétiques, il améliore ses performances. Les plaques carotidiennes 50-70 % ont une valeur pronostique significative. Conclusion : L’EDC est un outil intéressant pour aborder le RCV. Sa meilleure utilisation (quantitative et qualitative) permet de mieux appréhender le RCV.Background: Carotid echo Doppler (EDC) is an interesting tool to define the cardio vascular risk (RCV) of patients. However its performances could be increased with creation of new parameters The studies n°1, 2 and 3 studied the correlations between the plaque volume index (IVP) and the currently used echographic parameters. Studies n° 4 and 5 studied the contribution of EDC for evaluating the RCV in patients with an acute coronary syndrome (ACS). Materials: Studies n°1,2 and 3 were performed on 93 patients with EDC. Studies n° 4 and 5 were performed on 152 patients with an SCA and EDC systematically achieved. Results: IVP was not correlated with the parameters currently used to quantify carotid atheroma. IVP was more sensible than the stenosis degree to detect the changes in carotid atheroma. EDC performed in all patients with an SCA could not be justified. Performed in elderly and diabetic patients, this tool was very useful to detect severe stenosis with an impact on patients’s management. Asymptomatic Carotid narrowing between was found to have a prognostic value. Conclusion: EDC is an interesting tool to understand the RCV. Its better use (quantitative and qualitative) should allow to reduce the CV morbid mortality
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
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
Prévalence et modalités de dépistage des sténoses carotidiennes chez les patients hospitalisés pour un syndrome coronaire aigu
No full textTOURS-BU Médecine (372612103) / SudocPARIS-BIUM (751062103) / SudocSudocFranceF
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
Caractérisation échographique de la pathologie carotidienne athéromateuse (étude des corrélations entre la pathologie athéromateuse carotidienne et coronaire.)
No full textContexte : L'echodoppler carotidien (EDC) est un outil pour définir le risque cardio-vasculaire (RCV) mais peut progresser dans ses indications et dans les paramètres mesurés. Les travaux 1-2-3 étudient les correlations échographiques de l'index de volume de plaque (IVP). Les études 4-5 étudient l apport de l EDC dans l'évaluation du RCV des patients avec syndromes coronaires aigus (SCA). Matériels: les études N1-2-3 ont été réalisées sur 93 patients avec EDC. Les études 4-5 ont été réalisées sur 152 patients avec SCA et EDC systématique. Les analyses sont transversales et longitudinales. Résultats : L'IVP n est pas corrélé aux paramètres usuels de quantification de l athérome carotidien. Il est plus sensible que le degré de sténose pour mesurer les changements de la plaque d athérome. L'EDC chez tous les patients atteints de SCA est peu rentable. Ciblé aux patients âgés et diabétiques, il améliore ses performances. Les plaques carotidiennes 50-70 % ont une valeur pronostique significative. Conclusion : L EDC est un outil intéressant pour aborder le RCV. Sa meilleure utilisation (quantitative et qualitative) permet de mieux appréhender le RCV.Background: Carotid echo Doppler (EDC) is an interesting tool to define the cardio vascular risk (RCV) of patients. However its performances could be increased with creation of new parameters The studies n1, 2 and 3 studied the correlations between the plaque volume index (IVP) and the currently used echographic parameters. Studies n 4 and 5 studied the contribution of EDC for evaluating the RCV in patients with an acute coronary syndrome (ACS). Materials: Studies n1,2 and 3 were performed on 93 patients with EDC. Studies n 4 and 5 were performed on 152 patients with an SCA and EDC systematically achieved. Results: IVP was not correlated with the parameters currently used to quantify carotid atheroma. IVP was more sensible than the stenosis degree to detect the changes in carotid atheroma. EDC performed in all patients with an SCA could not be justified. Performed in elderly and diabetic patients, this tool was very useful to detect severe stenosis with an impact on patients s management. Asymptomatic Carotid narrowing between was found to have a prognostic value. Conclusion: EDC is an interesting tool to understand the RCV. Its better use (quantitative and qualitative) should allow to reduce the CV morbid mortality.TOURS-Bibl.électronique (372610011) / SudocSudocFranceF
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
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