1,720,954 research outputs found

    Ejercicios para mejorar los pases en los pasadores voleibol masculino de 16 a 18 años

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    The present investigative work was developed, with the objective of providing a proposal of established exercises, to improve the technical element of the volleypass, this was possible thanks to the knowledge acquired, during the period of my academic training, a thorough bibliographic review, that together with the criteria issued by coaches and athletes of the specialty, motivated me to carry out this work related to volley passing, gave me knowledge about its background, as well as other essential elements within the game of Volleyball, supported by the different types of passes, and attack combinations among other game actions. The essential difference, compared to other ball games, is the brief contact with the ball that excludes holds. Actions are characterized by their variability, and it is necessary to master a whole system of motor habits. Taking into account the speed of reaction and the precision of this, the technical element, is considered one of the most important ways to achieve victory in a Volleyball match.El presente trabajo investigativo se desarrolló, con el objetivo de brindar una propuesta de ejercicios establecidos, para mejorar el elemento técnico del voleo pase, esto fue posible gracias a los conocimientos adquiridos, durante el periodo de mi formación académica, una minuciosa revisión bibliográfica, que unido a los criterios emitidos por entrenadores y atletas de la especialidad, me motivaron a la realización de este trabajo relacionado con el voleo pase, me brindaron conocimientos sobre sus antecedentes, así como otros elementos imprescindibles dentro del juego de Voleibol, apoyado en los diferentes tipos de pases, y de las combinaciones de ataque entre otras acciones de juego. La diferencia esencial, con relación a otros juegos con pelota, es el breve contacto con el balón que excluye los agarres. Las acciones se caracterizan por su variabilidad, y se hace necesario, el dominio de todo un sistema de hábitos motores. Teniendo en cuenta la rapidez de reacción y la precisión de este, el elemento técnico, es considerado como una de las vías de mayor importancia para lograr la victoria en un partido de Voleibol

    Ejercicios para perfeccionar el contra ataque del equipo juvenil masculino de voleibol de playa.

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    The research was developed with the objective of proposing exercises to perfect the counterattack of the EIDE "Rafael Freyre" youth men\u27s beach volleyball team from Guantánamo. A series of tasks were carried out based on a bibliographic review of the topic, which made it possible to elaborate the historicity, the theoretical references, interpret and process the different instruments: criteria issued by coaches and athletes, thereby assessing the current state of the technical tactical problem, based on the observed insufficiencies and project new ways of solving the existing problem. We rely on historical logical, interview, observation, systemic structural methods.La investigación se desarrolló con el objetivo de proponer ejercicios para perfeccionar el contra ataque del equipo juvenil masculino de voleibol de playa de la EIDE “Rafael Freyre” de Guantánamo. Se realizaron una serie de tareas partiendo de una revisión bibliográfica del tema, que permitió elaborar la historicidad, los referentes teóricos, interpretar y procesar los diferentes instrumentos: criterios emitidos por entrenadores y atletas, con ello la valoración del estado actual del problema técnico-táctico, sobre la base de las insuficiencias observadas y proyectar nuevas vías de solución al problema existente. Nos apoyamos en los métodos histórico-lógico, entrevista, observación, sistémico-estructural

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The 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

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    “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

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    We 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

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    We 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

    Author Index

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    koamabayili/VECTRON-author-checklist: VECTRON author checklist

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    We 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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