1,720,967 research outputs found
Association entre l’activité physique et la préhypertension/hypertension artérielle chez les adolescents
Get PDFIntroduction : L’hypertension artérielle est un problème majeur de santé publique. Dans la population adulte, environ 1,56 milliard sera atteint de cette pathologie en 2025 si rien n’est fait. Une brève période d’hypertension au cours du jeune âge augmente les risques d’hypertension à l’âge adulte. Agir positivement sur les facteurs de risque modifiables permet une meilleure prévention. La pratique de l’activité physique est depuis longtemps reconnue comme un moyen efficace de prévention chez les adultes.
Objectif : L’objectif de la présente recherche est d’étudier entre l’association longitudinale de l’activité physique et la préhypertension/hypertension artérielle chez les adolescents.
Méthode: La pression artérielle a été mesurée trois fois par des techniciens qualifiés durant les cinq premières années de suivi (1999-2005) chez 638 filles et 586 garçons de l’étude NICO. Une tension artérielle comprise entre le 90e et le 95e percentile en fonction de l’âge et du sexe est définie comme une préhypertension et celle située au-dessus du 95e percentile comme une hypertension. Chaque 3 mois, ces adolescents ont fourni des informations concernant leur pratique d’activité physique. L’association de l’activité physique et la préhypertension/hypertension artérielle chez les garçons et chez les filles a été estimé à l’aide de modèles marginaux.
Résultats : Les analyses révèlent que chez les filles, la majorité des indicateurs d’activité physique étudiés apparait protectrice contre le développement de la préhypertension/hypertension artérielle et les résultats sont statistiquement significatifs sauf pour l’activité physique légère (ratio de cotes (RC) (95% intervalle de confiance) = 0,98 (0,86-1,12). Le RC de l’activité physique modérée est de 0,89 (0,80-0,98), celui de l’activité physique vigoureuse de 0,80 (0,65-0,98), celui de l’activité physique modérée à vigoureuse de 0,89 (0,81-0,98) et celui de la fréquence de l’activité physique = 0,78 (0,68-0,91). Aucun indicateur d’activité physique n’est statistiquement significatif chez les garçons.
Conclusion: La pratique d’activité physique modérée ou modérée à vigoureuse est associée la préhypertension/hypertension artérielle uniquement chez les filles.Introduction: Hypertension is a major public health problem. If no action is taken, 1.56 billion adults
will be diagnosed with this pathology by 2025. Even a brief period of hypertension at a young age
increases the risk of hypertension in adulthood. Preventive intervention targeting modifiable risk
factors is a viable route to better prevention, and the practice of physical activity has long been
recognized as an effective means of preventing hypertension in adults.
Objective: The objective of this research is to assess the longitudinal association between physical
activity and prehypertension/hypertension in adolescents.
Method: Blood pressure was measured three times by trained technicians during the first five years of
follow-up (1999-2005) in 638 girls and 586 boys participating in the Nicotine Dependence in Teens
(NDIT) Study. BP between the age- and sex-specific 90th and 95th percentile was defined as
prehypertension; BP above the 95th percentile was defined as hypertension. Every three months,
adolescents provided data on their practice of physical activity. The association between physical
activity and prehypertension/hypertension among boys and girls was estimated using marginal models.
Results: In girls, all physical activity indicators except light physical activity (odds ratio (OR) (95%
confidence interval) = 0.98 (0.86-1.12)) were statistically significantly protective against
prehypertension/hypertension; OR for moderate physical activity = 0.89 (0.80-0.98); OR for vigorous
physical activity = 0.80 (0.65-0.98); OR for moderate-to-vigorous physical activity = 0.89 (0.81-0.98);
OR for frequency of physical activity = 0.78 (0.68-0.91). None of the physical activity indicators were
significant among boys.
Conclusion: The practice of moderate or moderate-to-vigorous physical activity is associated with
protection against prehypertension/hypertension, in girls but not boys
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
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
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