1,720,972 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
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
New indicators for the diagnostic evaluation of dyspnea on exertion in patients with chronic obstructive pulmonary disease(COPD) and congestive heart failures(CHF)
No full textA proposta deste estudo foi diferenciar a natureza da limitacao funcional cardiorrespiratoria no exercicio, de individuos com doenca pulmonar obstrutiva cronica (DPOC) em relacao a individuos com insufiCiência cardiaca congestiva (ICC), e determinar indicadores que permitam classificar um individuo com limitacao funcional em DPOC ou ICC. Foram avaliados 32 pacientes, divididos em grupos de 16 pacientes com doenca pulmonar obstrutiva cronica, 13 do sexo masculino e 3 do sexo feminino, e 16 pacientes com insufiCiência cardiaca congestiva, 11 do sexo masculino e 5 do sexo feminino. Todos os individuos foram submetidos a um teste cardiopulmonar, em esteira rolante, com protocolo continuo, de carga crescente, ate a exaustao. Nao houve diferenca significante entre os valores de consumo de oxigenio pico (VO2 pico) dos pacientes com DPOC (17,37 n 4,04 ml/kg/min) e ICC (18,66 n 3,49 ml/kg/min).Os valores de razao de trocas gasosas pico (R pico) e equivalente ventilatorio para o oxigenio pico (VEO2 pico) foram maiores nos pacientes com insufiCiência cardiaca que nos pacientes com pneumopatia obstrutiva, sendo estas as variaveis que caracterizam as diferencas entre os grupos. Para classificar os grupos, podem ser utilizadas funcoes discriminantes com as variaveis R pico e VeO2 pico, descritas abaixo: Grupo DPOC: - 33,986 + 72,827 X R pico + 0,063 X VE02 pico ; Grupo ICC: -51,071+ 83,922 X R pico + 0,216 X VEO2 pico. A funcao discriminante em que o resultado e maior classifica corretamente em 90,6 por cento o grupo ao qual pertence o paciente. Concluindo, os valores de R pico e VEO2 pico possibilitam diferenciar a etiologia da limitacao funcional cardiorrespiratoria de pacientes com DPOC e ICC, e os resultados numericos dessas variaveis, aplicados nas respectivas funcoes discriminantes, permitem classificar os pacientes com DPOC ou ICCBV UNIFESP: Teses e dissertaçõe
Características fisiológicas de corredoras de longas distâncias
No full textCom o proposito de investigar os efeitos do treinamento de corridas de longas distancias no ciclo menstrual, densidade ossea, composicao corporal e potencia aerobia, 17 mulheres, 9 corredoras (COR) com idade media de 33,67 anos (27-40), peso 54,40 ± 4,41 kg e altura 159,67 ± 5,31 cm, e 8 sedentarias saudaveis (SED), de idades semelhantes, media de 33,50 anos (24-38), peso 59,92 ± 8,92 kg e altura 161,25 ± 7,04cm, foram submetidas ao seguinte protocolo: 1) dosagens sericas de estradiol, progesterona e prolactina; 2) densidade ossea de coluna (DO col) e femur (DO fem); 3) massa magra, gordura corporal e % de gordura; 4) teste ergoespirometrico maximo, em esteira rolante, para determinar o consumo maximo de oxigenio (VO2 max) e limiar anaerobio (LA); 5) monitorizacao da frequencia cardiaca de treinamento nas corredoras. Todas as mulheres, corredoras e sedentarias, eram eumenorreicas, nao sendo observadas diferencas em niveis sericos de estradiol (COR 110,50 ± 32,97 pg/ml vs SED 147,35 ± 70,48 pg/ml), progesterona (COR 9,79 ± 6,30 ng/ml vs SED 7,81 ± 7,32 ng/ml) e prolactina (COR 9,84 ± 4,05 ng/ml vs 9,36 ± 4,36 ng/ml). A densidade ossea foi maior (p < 0,05) nas corredoras do que nas sedentarias (DO col 1,27 ± 0,09 vs 1,17 ± 0,08 g/cm2 e DO fem 1,05 ± 0,18 vs 0,88 ± 0,06 g/cm2). A massa magra foi maior (p < 0,01) nas corredoras que nas sedentarias (41.319,56 ± 3.406,65 g vs 36.363,25 ± 3.475,15 g), a gordura corporal e % de gordura foram maiores (p < 0,01) nas sedentarias em relacao as corredoras (20.417,63 ± 6.104,60 vs 9.873,67 ± 4.349,67 g e 35,40 ± 6,07 vs 18,83 ± 7,14). O consumo maximo de oxigenio e o limiar anaerobio foram maiores (p < 0,01) nas corredoras do que nas sedentarias (VO2 max 55,18 ± 3,57 vs 37,01 ± 3,31 ml/kg/min, LA 44,42 ± 3,84 vs 20,92 ± 3,76 ml/kg/min). As corredoras treinavam 68,89 km/sem (50-100); intensidade media de 90,57% LA (85,48-96,45); media de gasto calorico estimado de 3.696,31 kcal (2.063,10 - 7.669,10). Os resultados sugerem que, apesar das grandes distancias de treinamento semanal, o treinamento em intensidade abaixo do limiar anaerobio de todas as corredoras pode contribuir para importantes beneficios fisiologicos sem nenhum prejuizo funcionalBV UNIFESP: Teses e dissertaçõe
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