1,721,117 research outputs found
Percurso desportivo dos jogadores de futsal em Portugal - Perspetiva dos treinadores sobre os fatores de rendimento desportivo
No full textEste documento foi concebido especialmente para apoio aos alunos de
licenciaturas nas áreas das ciências do desporto e do treino desportivo,
encontrando-se organizado em quatro artigos independentes sobre o futsal
em Portugal. Nestes, em termos gerais, pretendeu-se: (i) analisar e
caracterizar a preparação desportiva a longo prazo dos jogadores e (ii)
identificar a importância atribuída pelos treinadores de diferentes níveis de
formação aos fatores do rendimento desportivo e às diversas componentes
dos exercícios de treino. Para alcançar estes objetivos, foram realizados
estudos que envolveram a recolha de informação retrospetiva através de
questionários e onde participaram 411 jogadores portugueses de diferentes
escalões etários e níveis competitivos e 92 treinadores (portugueses,
espanhóis e brasileiros), com diferentes graus de formação específica,
experiência e nível das equipas que treinaram.
Com a inclusão, nas amostras, dos jogadores da seleção nacional e de
treinadores de seleções nacionais ou de equipas campeãs nacionais,
procurou-se identificar e definir uma referência na comparação com jogadores
de níveis competitivos inferiores e com treinadores com nível de formação
específica inferior, respetivamente.
Os resultados obtidos nos questionários apresentados aos jogadores
permitem verificar que os melhores jogadores de futsal (experts) se
distinguem dos jogadores de níveis competitivos inferiores pela dedicação
mais precoce ao treino desportivo e especificamente ao futsal. Facto que é
reforçado pelo maior compromisso que assumem com a modalidade,
traduzido no acréscimo progressivo do volume de treino semanal e na
duração das épocas desportivas. Estes aspetos emergem como fatores
discriminantes neste processo, não deixando de referenciar também, o
contributo da prática diversificada no percurso dos melhores jogadores
portugueses de futsal. Os questionários recolheram ainda informação
referente à incidência de lesões desportivas no futsal. A clara predominância
da entorse da articulação tíbio-társica confirma o interesse no
desenvolvimento de protocolos específicos de prevenção de lesões,
especialmente nas crianças e jovens.
Os resultados obtidos nos questionários apresentados aos treinadores
permitem concluir que os treinadores de elite se diferenciam dos treinadores
menos experientes especialmente ao nível da maior importância que
conferem aos jogos reduzidos e aos jogos em inferioridade numérica, dentro
dos fatores táticos do rendimento desportivo e às componentes oposição e
timing de execução dos exercícios de treino
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Full text linkWe 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
Transition from Youth categories to Elite cycling: relationships between early career performance and UCI World Tour success
No full textBACKGROUND: The present study aimed to describe the possible roles of cyclists’ early career performance, on the transition process to elite cycling categories. METHODS: Data from national and international databases, and results achieved during the UCI World Championships, were retrospectively analyzed considering the Italian national Youth-U16, Junior-U18, and U23 categories, and international Junior-U18 and UCI World-Tour categories. RESULTS: The 15% of Youth-U16, the 38.8% of Junior-U18 and the 60% of U23 athletes who ranked top-10 between 2007 and 2013, scored points in UCI World Tour competitions between 2012 and 2018. The 1.6% of Youth-U16, the 8.3% of Junior-U18 and 25% of U23 athletes who ranked top-10 between 2007 and 2013, ranked among the Italian Top-10 in the UCI World-Tour individual classification between 2012 and 2018. Performance level in Youth-U16 category displayed a low correlation with UCI World Tour performance while the performance level in Junior-U18 category displayed a moderate correlation. The 34% of the Junior World Championship TOP-25 cyclists, participated in the elite competition. Trivial to small correlations emerged between Junior and elite World Championship performance levels. CONCLUSIONS: Early performance seems not to represent a good predictor of elite performance, while the Junior-U18 and the U23 performance level, emerged as potential indicators of future success in the elite categories
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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