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Facteurs de variation de l'aptitude physique anaérobie (approche bioénergétique et électromyographique)
No full textLa présente thèse s'intéresse à l'évaluation des aptitudes physiques anaérobies par le moyen d'un test de terrain (la détente verticale) et, à la détermination des aspects bioénergétiques et neuromusculaires des exercices intenses répétés et brefs à charge croissante par le moyen d'un test de laboratoire (l'épreuve force-vitesse). Au total 15 sujets masculins sains et sportifs ont participé à l'épreuve force-vitesse. Ce test devrait servir, d'une part à comparer les aspects bioénergétiques et neuromusculaires des sujets Noirs et Blancs et, d'autre part à déterminer les effets d'une pré élévation par un exercice préalable intense de la lactatémie sur la puissance mécanique externe lors des exercices intenses répétés brefs à charge croissante. La comparaison de 9 sujets Noirs et 6 sujets Blancs appariés en aptitudes aérobies et en caractéristiques anthropométriques montrent qu'il existe des différences, mais très faibles entre les deux groupes de sujets au niveau des aspects bioénergétiques et neuromusculaires sur le plan anaérobie. Si la pré-élevation de la lactatémie chez 12 sujets par un exercice préalable intense n'a pas modifié significativement la puissance maximale anaérobie, elle a modifié de manière significative les comportements bioénergétiques et neuromusculaires lors de l'épreuve force-vitesse. L'étude transversale des aptitudes physiques anaérobie a connu la participation de 138 sujets divisés en 14 groupes en fonction de leurs sexes, âges (13,15, 17, 19 ans), ethnies (sujets Noirs et Bancs) et spécialités sportives (sprinters, demi-fondeurs et fondeurs). La détente verticale a consisté à réaliser un squat jump, un countermovement jump et un rebound jump sur l'ergojump. Les hauteurs de saut et les capacités des puissances anaérobies recueillies via le micro-ordinateur (psion) relié à l'ergo-jump ont permis de comparer les différents groupes de sujets. Les résultats de l'étude montrent que les plus âgés sautent plus haut et ont une capacité de la puissance anaérobie significativement plus importante que celle des plus petits. Les entraînés (surtout les sprinters) sont significativement plus performants que les non entraînés d'âge et de sexe identique. Cependant entre les filles et les garçons de même âge les garçons ont les performances supérieures mais sans différence significative. De même chez les sujets Noirs et Blancs, les différences sont très faibles et ne sont pas statiquement significatives.The present report interested the determination of the bioenergetics and electromyographics during repeated brief and intense exercises with increasing load friction using a laboratory test (force velocity test) and, the assement of the anaerobic fitness using vertical jump test. Fifteen healthy males subjects participated in the force-velocity test. This test permitted, on the one hand to compare the bioenergetics and neuromuscular aspects of the Black and White subjects and, on the other hand to determine the effects of a pre-elevation of blood lactate concentration by a previous intense exercise on the external mechanical power during the force-velocity test. The comparison of 9 Black subjects and 6 White subjects matched in aerobic aptitude and in anthropometrics characteristics showed that some differences existed, but very weak between the two groups of subjects in bioenergetics and neuromuscular aspects during the force-velocity test. If the pre-elevation of the blood lactate concentrations in 12 subjects by a previous intense exercise didn't modify the anaerobic maximal power, it modified the bioenergetics and neuromuscular aspects during the force-velocity test. A total of 138 subjects participated in the transverse survey of the anaerobic physical aptitude. They were separated in 14 groups according to their sexes, ages (13, 15, 17, 19 years), ethnic groups (Black subjects, and white subjects), and sports specialties (sprinters and long distance). The vertical jump consisted in achieving a squat jump, a countermovement jump and a rebound jump on the ergojump. The heights of jump and the anaerobic power were collected via a microcomputer (psion) connected on the ergo-jump. These variables permitted to compare different groups of subjects. The results showed significant increase of anaerobic power with the increase of âge. However between girls and boys with similar âge, boys demonstrated higher performance than girls but without significant difference. With identical âge and sex trained subjects are significantly more performing than untrained subjects. The differences between Black and White subjects are very weak and not statistically significant.AMIENS-BU Lettres (800212104) / SudocSudocFranceF
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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