1,720,979 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
Estudo clínico, laboratorial e terapêutico da diarréia experimental em bezerros induzida por Salmonella enterica subespécie enterica sorotipo Dublin
No full textO presente estudo teve como objetivo avaliar as alterações clínicas e laboratoriais de bezerros infectados experimentalmente com Salmonella Dublin e verificar o efeito do tratamento com antibiótico florfenicol associado ou não à fluidoterapia. Para isso, foram constituídos quatro grupos experimentais, compostos por seis bezerros cada, que receberam, por via oral, aproximadamente 108 UFC de S. Dublin (exceto o grupo 1) e que foram submetidos aos seguintes procedimentos: controle (grupo 1), sem tratamento (grupo 2), tratamento apenas com florfenicol (grupo 3) e tratamento com florfenicol associado à fluidoterapia (grupo 4). Todos os bezerros foram submetidos ao exame físico antes da inoculação experimental e a cada 12 horas, até o sétimo dia após a infecção. Nestes momentos foram colhidas amostras de sangue, para realização de exames hematológicos, hemogasométricos, bioquímicos e proteinograma, e suabes retais, para isolamento de Salmonella por meio de exames microbiológicos e da reação em cadeia da polimerase (PCR). A infecção experimental com S. Dublin induziu diarréia, febre, desidratação e sinais respiratórios nos bezerros inoculados e provocou aumento da contagem do número de leucócitos, da concentração de uréia, fibrinogênio e proteínas de fase aguda, e redução do valor do pH, do excesso de base, da concentração de albumina, magnésio e ferro. Os bezerros que receberam tratamento mostraram boa recuperação clínica, sendo que o grupo tratado com antibiótico associado à fluidoterapia apresentou correção mais rápida e eficiente do equilíbrio hidro-eletrolítico. Quanto à detecção de Salmonella Dublin, o isolamento microbiológico mostrou-se superior à PCR, contudo o uso simultâneo das duas técnicas propiciou o diagnóstico de um maior número de amostras positivas.The aim of the study was to evaluate clinical and laboratorial changes in experimentally Salmonella Dublin-infected calves and the effect of florfenicol antibiotic treatment associated or not with fluid therapy. Four experimental groups, comprising six calves, were formed. With the exception of group 1, animals orally received about 108 CFU of S. Dublin and underwent the following procedures: control (group 1), without any treatment (group 2), treatment with florfenicol only (group 3), treatment with florfenicol associated with fluid therapy (group 4). All calves were submitted to physical examination before experimental inoculation and at every 12 hours up to the 7th day after infection. Blood samples were collected for hematological, hemogasometric, and biochemical analysis, coupled to rectal swabs for the isolation of Salmonella by standard microbiological techniques and polymerase chain reaction (PCR). S. Dublin experimental infection caused diarrhea, fever, dehydration and respiratory effects in inoculated calves; increased values of leukocytes, urea, fibrinogen and acute phase proteins; decreased rate of pH, base excess, albumin, magnesium and iron. Treated calves had a satisfactory clinical recovery. The group treated with antibiotics associated with fluid therapy had a faster and more efficient correction of hydro-electrolyte alterations. Although microbiological isolation was better than PCR in the detection of Salmonella, the simultaneous use of both techniques provides a diagnosis with more positive samples.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP
Estudo clínico, laboratorial e terapêutico da diarréia experimental em bezerros induzida por Salmonella enterica subespécie enterica sorotipo Dublin
No full textO presente estudo teve como objetivo avaliar as alterações clínicas e laboratoriais de bezerros infectados experimentalmente com Salmonella Dublin e verificar o efeito do tratamento com antibiótico florfenicol associado ou não à fluidoterapia. Para isso, foram constituídos quatro grupos experimentais, compostos por seis bezerros cada, que receberam, por via oral, aproximadamente 108 UFC de S. Dublin (exceto o grupo 1) e que foram submetidos aos seguintes procedimentos: controle (grupo 1), sem tratamento (grupo 2), tratamento apenas com florfenicol (grupo 3) e tratamento com florfenicol associado à fluidoterapia (grupo 4). Todos os bezerros foram submetidos ao exame físico antes da inoculação experimental e a cada 12 horas, até o sétimo dia após a infecção. Nestes momentos foram colhidas amostras de sangue, para realização de exames hematológicos, hemogasométricos, bioquímicos e proteinograma, e suabes retais, para isolamento de Salmonella por meio de exames microbiológicos e da reação em cadeia da polimerase (PCR). A infecção experimental com S. Dublin induziu diarréia, febre, desidratação e sinais respiratórios nos bezerros inoculados e provocou aumento da contagem do número de leucócitos, da concentração de uréia, fibrinogênio e proteínas de fase aguda, e redução do valor do pH, do excesso de base, da concentração de albumina, magnésio e ferro. Os bezerros que receberam tratamento mostraram boa recuperação clínica, sendo que o grupo tratado com antibiótico associado à fluidoterapia apresentou correção mais rápida e eficiente do equilíbrio hidro-eletrolítico. Quanto à detecção de Salmonella Dublin, o isolamento microbiológico mostrou-se superior à PCR, contudo o uso simultâneo das duas técnicas propiciou o diagnóstico de um maior número de amostras positivas.The aim of the study was to evaluate clinical and laboratorial changes in experimentally Salmonella Dublin-infected calves and the effect of florfenicol antibiotic treatment associated or not with fluid therapy. Four experimental groups, comprising six calves, were formed. With the exception of group 1, animals orally received about 108 CFU of S. Dublin and underwent the following procedures: control (group 1), without any treatment (group 2), treatment with florfenicol only (group 3), treatment with florfenicol associated with fluid therapy (group 4). All calves were submitted to physical examination before experimental inoculation and at every 12 hours up to the 7th day after infection. Blood samples were collected for hematological, hemogasometric, and biochemical analysis, coupled to rectal swabs for the isolation of Salmonella by standard microbiological techniques and polymerase chain reaction (PCR). S. Dublin experimental infection caused diarrhea, fever, dehydration and respiratory effects in inoculated calves; increased values of leukocytes, urea, fibrinogen and acute phase proteins; decreased rate of pH, base excess, albumin, magnesium and iron. Treated calves had a satisfactory clinical recovery. The group treated with antibiotics associated with fluid therapy had a faster and more efficient correction of hydro-electrolyte alterations. Although microbiological isolation was better than PCR in the detection of Salmonella, the simultaneous use of both techniques provides a diagnosis with more positive samples.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP
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
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