1,721,403 research outputs found
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
Competência motora e o sucesso na prática do Futebol: a perceção do treinador, níveis de atividade física habitual e suporte social
Full text linkObjetivos:
Os objetivos desta investigação foram: (1) estudar a associação da atividade física habitual e do suporte social com o a competência motora em praticantes de futebol de formação. (2) Analisar a associação da competência motora com perceção do treinador sobre sucesso futuro dos seus atletas.
Métodos:
A amostra deste estudo foi composta por 52 atletas dos escalões de formação do Grupo Desportivo de Chaves, todos do sexo masculino e com idades compreendidas entre os 8 e 10 anos de idade. Para a validação do estudo foram realizados exercícios de Competência Motora Corporal intrínsecos à Bateria de Testes KTK, Testes de competência motora específica e um questionário aos respetivos treinadores com uma apreciação subjetiva e individual quanto aos vários momentos do Jogo e Treino de cada um dos atletas visados.
Resultados:
O apoio dos Pais (SS Pais) e dos amigos (SS Amigos) está significativamente e positivamente associado à AF habitual (r= 0.44 e r = 0,39 respetivamente) e o apoio social dos pais está significativamente e positivamente associado à competência motora (KTKQM, r = 0,46, drible, r=-0,37). Por sua vez a atividade física habitual está significativamente e positivamente associada à competência motora (KTKQM, r = 0,50; e drible, r = -0,43).
As variáveis com maior grau de associação com a perceção dos treinadores sobre o sucesso futuro dos seus atletas foram a CM avaliada pelo KTK e a aptidão cardiorrespiratória.
Conclusões:
O apoio dos pais e dos amigos está significativamente associado à atividade física habitual e à competência motora. A atividade física habitual está significativamente associada à competência motora, A competência motora é a variável com maior grau de
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associação com perceção dos treinadores relativamente ao sucesso dos seus atletas, seguida da aptidão cardiorrespiratória.Goals:
The objectives of this investigation were: (1) to study the association of habitual physical activity and social support with motor competence in practicing soccer players. (2) Analyze the association of motor competence with the coach's perception of the future success of his athletes.
Methods:
The sample of this study was composed by 52 athletes from the training levels of Grupo Desportivo de Chaves, all male and aged between 8 and 10 years old. For the validation of the study, Body Motor Competence exercises were performed intrinsic to the KTK Test Battery, Specific Motor Competence Tests and a questionnaire to the respective coaches with a subjective and individual appreciation of the various moments of the Game and Training of each of the targeted athletes. .
Results:
The Support from Parents (SS Parents) and friends (SS Friends) is significantly and positively associated with habitual PA (r = 0.44 and r = 0.39 respectively) and social support from parents is significantly and positively associated with motor competence (KTKQM , r = 0.46, dribbling, r = -0.37). On the other hand, habitual physical activity is significantly and positively associated with motor competence (KTKQM, r = 0.50; and dribbling, r = -0.43).
The variables with the highest degree of association with the coaches' perception of the future success of their athletes were the CM assessed by the KTK and the cardiorespiratory fitness.
Conclusions:
The support of parents and friends is significantly associated with habitual physical activity and motor skills. Habitual physical activity is significantly associated with motor competence. Motor competence is the variable with the highest degree of association with coaches 'perception of their athletes' success, followed by cardiorespiratory fitness
Incidência e prevalência da pré-obesidade e obesidade em crianças: um estudo longitudinal
No full textObjetivo: Este estudo pretendeu analisar longitudinalmente a prevalência e incidência da pré-obesidade e obesidade em crianças com idades compreendidas entre os 4 e os 9 anos de idade. As avaliações antropométricas foram estudadas num espaço temporal de 5 anos.
Métodos: Estudo longitudinal que decorreu entre o ano de 2009 e 2014, com uma amostra de 164 crianças do concelho de Bragança. Para a análise dos dados recorreu-se ao cálculo das taxas de incidência e prevalência de sobrepeso e obesidade em cada ano de avaliações.
Resultados: Denotou-se um aumento da prevalência da pré-obesidade e obesidade com o decorrer dos anos, durante o processo de industrialização e face a comportamentos sedentários.
Conclusões: O delineamento longitudinal misto foi crucial para a compreensão do desenvolvimento da adiposidade durante o crescimento, revelando os períodos em que existe maior probabilidade de se desenvolverem.Objective: This study aims to longitudinally analyze a prevalence and incidence of obesity and obesity in children aged 4 to 9 years. As anthropometric reviews were studied in a 5-year time frame.
Methods: A longitudinal study that ran between the years 2009 and 2014, with a sample of 164 children from the county of Bragança. For the analysis of the data we used the calculation of incidence rates and prevalence of overweight and obesity in each year of evaluations.
Results: There was an increase in the prevalence of pre-obesity and obesity over the years, during the industrialization process and in relation to sedentary behaviors.
Conclusions: Mixed longitudinal design was crucial for understanding the development of adiposity during growth, revealing the times when it is most likely to develop
Associação da competência motora com a atividade física, estudo longitudinal em crianças
No full textObjetivo: Este estudo teve como objetivo analisar longitudinalmente a influência da competência motora nos níveis de atividade física (AF) das crianças, isto é, a proficiência em habilidades motoras e os níveis de coordenação motora foram estudados como preditores dos níveis de AF das crianças num espaço temporal de 4 anos. Métodos: Estudo longitudinal que decorreu entre o ano de 2009 e 2012, com uma amostra de 98 crianças do concelho de Bragança. No início do estudo a amostra era constituída por 24 crianças com seis anos de idade, 40 com sete anos e 34 com oito anos, que foram seguidas ao longo 4 anos consecutivos, realizando-se avaliações anuais das variáveis antropométricas, da AF, da coordenação motora e das habilidades motoras fundamentais. Foi utilizado o pedómetro como instrumento objetivo para avaliar a AF, a bateria Körperkoordination Test für Kinder (KTK) para avaliar a coordenação motora e a bateria Test of Gross Motor Development, Second Edition (TGMD-2) para avaliar as habilidades motoras fundamentais, constituídas por habilidades de controlo de objetos e habilidades de locomoção. Para a análise dos dados recorreu-se à modelação hierárquica ou multinível, com o intuito de determinar os preditores da AF, através do sucessivo ajustamento de cinco modelos. Resultados: O nível de AF das crianças diminuiu significativamente ao longo do tempo. No início do estudo as raparigas tinham um nível de AF significativamente inferior ao dos rapazes. A magnitude das diferenças no nível de AF entre rapazes e raparigas não se alterou significativamente ao longo das observações. Os níveis de coordenação motora e a proficiência das habilidades de controlo de objetos não foram preditores da AF, enquanto que a proficiência das habilidades de locomoção foi o único preditor significativo da AF. Verificou-se uma grande percentagem de crianças que não cumpriram as recomendações mínimas do número de passos diários, e esta situação tende a agravar-se com o aumento da idade das crianças, em especial nas raparigas. Conclusões: As habilidades motoras de locomoção foram um preditor significativo dos níveis de AF das crianças ao longo de 4 anos. Objective: The aim of this study was to analyze the influence of motor proficiency on children’s physical activity levels (PA) in long-term. Motor skills proficiency and coordination levels were studied as predictors of children's PA levels in a temporal space of 4 years. Methods: This longitudinal study took place between 2009 and 2012, with a sample of 98 children in the municipality of Bragança. At the beginning of the study the sample was composed of 24 children with six years old, 40 children with seven years and 34 children with eight years, who were followed over 4 consecutive years, performing annual assessments of anthropometric variables, PA, motor coordination and fundamental motor skills. Pedometer was used as an objective instrument for assessing PA, test of Körperkoordination Test für Kinder (KTK) to assess motor coordination and test of Gross Motor Development, second edition (TGMD-2) to assess the fundamental movement skills, composed by objects control skills and locomotor skills. For data analysis we used the hierarchical or multilevel modeling, in order to determine the predictors of PA through five successive adjustment models. Results: The children’s PA levels significantly decreased over time. At baseline the girls had a PA level significantly lower than the boys. The magnitude of the differences in PA levels between boys and girls has not changed significantly over the observations. The motor coordination levels and proficiency in object control skill were not predictors of PA, whereas the proficiency in locomotor skills was the only significant predictor of PA. There were a large percentage of children who did not comply with the minimum recommendations in the number of daily steps and this situation tends to worsen with increasing age of the children, especially in girls. Conclusions: The locomotor motor skills were a significant predictor of children’s PA levels along 4 years
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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