1,721,119 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
Perfil epidemiológico do carcinoma espinocelular cutâneo de um hospital referência em oncologia do Estado da Paraíba, entre os anos 2009 a 2011
Full text linkO Carcinoma Espinocelular Cutâneo (CEC) é a segunda forma de câncer de pele mais frequente na população branca mundial. Este tumor vem apresentando aumento crescente da incidência em todo o mundo, constituindo-se importante problema de saúde pública devido à sua alta morbidade e aos elevados custos aos serviços de saúde. Existem poucos estudos avaliando o perfil epidemiológico do CEC na população brasileira e nenhum, especificamente, no estado da Paraíba. OBJETIVO: Verificar o perfil clínico-epidemiológico dos casos de CEC dos pacientes atendidos no principal hospital de referência no tratamento do câncer do estado da Paraíba nos 2009 a 2011, observando peculiaridades do comportamento deste tumor nos sexos masculino e feminino, bem como nas mesorregiões que compõem o estado. MÉTODO: Foi realizado um estudo transversal com dados secundários, analisando variáveis como: sexo, idade, procedência, grau de invasão e diferenciação histológica do tumor, local do corpo acometido e tamanho do tumor. Foi realizada análise descritiva e utilizado os testes de qui-quadrado, comparação entre duas porcentagens, teste U de Mann-Whitney, Kruskal-Wallis e teste de comparações múltiplas de Dunn. O nível de significância foi de 5%.
RESULTADOS: Foram encontrados 1225 casos de CEC, com uma relação de 2:1 entre homens e mulheres (p<0,05), respectivamente. A média das idades foi de 69 anos, com a maioria - 940 (77%) - dos casos ocorridos em pacientes com mais de 60 anos de idade. As regiões fotoexpostas foram as mais acometidas com 996 (81,3%) tumores. A região da cabeça e pescoço foi a mais comum para o CEC com 900 (73,5%) lesões. A maioria dos tumores identificados foram invasivos ¿ ou seja, 942 (77%) casos ¿ dentre esses, 558 (59%) tinham grau de diferenciação moderado. Os homens apresentaram CEC em média quatro anos antes que as mulheres (68 vs 72 anos). Seus CEC também foram mais agressivos com maior percentual de tumores pouco diferenciados (8,0% vs 4,2%) (p=0,02). Além disso, o sexo masculino apresentou maior proporção de tumores que mulheres quando localizados na orelha (6,9% vs 3,1%) (p=0,048) e no tórax (15,9% vs 6,7%) (p<0,001). As mulheres apresentaram maior proporção de tumores em membros inferiores (7,0% vs 2,1%) (p<0,001). A maioria dos tumores, isto é, 643 (52%) dos casos, veio da Zona da Mata, no litoral do estado. Entretanto, considerando as mesorregiões da Paraíba, não houve diferenças estatisticamente significantes entre as mesmas quanto aos tamanhos de tumores, nem associação estatisticamente significante quanto aos graus de invasão e diferenciação histológica. CONCLUSÃO: O estudo foi pioneiro ao avaliar o perfil do CEC separadamente do Carcinoma Basocelular (CBC) no estado da Paraíba, o que permitiu constatar particularidades clínicas e epidemiológicas desse tumor. Espera-se que os dados obtidos sejam úteis às equipes médicas e aos gestores da saúde no estado da Paraíba para que sejam tomadas medidas de prevenção, diagnóstico e tratamentos precoces que contribuam para a diminuição da incidência e morbimortalidade desta neoplasia.The Cutaneous Squamous Cell Carcinoma (SCC) is the second most common form of skin cancer in the white population worldwide. This carcinoma has shown steady increase in incidence worldwide. Thus, becoming an important public health problem because of its high morbidity and high health service costs. There are few studies evaluating the epidemiological profile of the SCC in the brazilian population and none has specifically been done in the state of Paraíba. OBJECTIVE: To verify the clinical and epidemiological profile of the SCC cases of patients treated at the main referral hospital for cancer treatment in the state of Paraiba from 2009 to 2011, taking into consideration peculiarities of the behavior of this tumor in males and females, as well as the regions the state is divided in. METHODS: A crosssectional study was conducted using secondary data such as sex, age, origin, degree of invasion and tumor differentiation, affected part of the body and largest tumor diameter. It
was done a descriptive analysis and used the chi-square test, test to compare two percentages, U Mann-Whitney, Kruskal-Wallis and Dunn's multiple comparison tests. Association analyses were performed and comparison of percentages. The significance level was 5%. RESULTS: There were 1225 cases of SCC, with a 2:1 ratio between men and women (p<0,05), respectively. The average age was 69 years old and the majority of the cases ¿ 940 (77%) - occurred in patients over 60 years old. The sun-exposed regions of the body were the most affected ones with 996 (81,3%) tumors. The head and neck area was the most common place of SCC, with 900 (73,5%) lesions. Most of the identified tumors, i.e. 942 (77%), were of the invasive type; among these, 558 (59%) had moderate grade of differentiation. Men showed SCC in average four years earlier than women (68 vs 72 years). Their SCC was also
more aggressive than those identified in women with a higher percentage of poorly
differentiated tumors (8,0% vs. 4,2%) (p = 0,02). Besides, men showed a higher proportion of tumors than women when located in the ear (6,9% vs 3,1%) (p=0,048) and chest (15,9% vs 6,7%) (p<0,001). Women had a higher proportion of tumors than men in the lower limbs (7,0% vs 2,1%) (p <0,001). Most patients with tumors, i.e. 643 (52%), came from Zona da Mata ¿ the coastal area of the state. However, considering the regions of the state of Paraíba, there were no statistically significant differences regarding the size of tumors or the degree of invasion and histological differentiation. CONCLUSION: This study has a pioneer character considering it evaluated the profile of the SCC separately from Basal Cell Carcinoma (BCC) in the state of Paraíba. By doing this, it was possible to highlight clinical and epidemiological particularities of the SCC. Doctors and healthcare managers in the state of Paraiba may find
the data produced through this study useful in order to take preventive, diagnostic and
precocious treatment measures that may contribute to diminish the incidence and morbidity of this malignancy
Retroanálise da capacidade de carga do solo em projeto e execução de fundações diretas
Full text linkMonografiaAs fundações são parte importante de uma obra, sendo elas responsáveis por transmitir as cargas da obra ao solo. Investigações do solo são essenciais para evitar problemas em fundações, e ao mesmo tempo reduz custo na execução. Nesse contexto, objetivou-se caracterizar o solo de um lote localizado no condomínio Alphaville localizado em Mossoró/RN, a fim de se obter a capacidade de carga do mesmo, em fundações diretas. Ademais, com os resultados obtidos em ensaios laboratoriais pode-se escolher o melhor tipo de fundação que alie economia e eficácia, além de fornecer dados base para as futuras construções. A caracterização se deu por meio dos ensaios de granulometria, limite de liquidez, limites de plasticidade e determinação da massa específica do solo, bem como cisalhamento direto drenado. A partir dos dados dos ensaios, adotando métodos teóricos, foi montada uma tabela com os valores de capacidade de carga e as dimensões das fundações. Os dados mostraram que o estudo do solo, aliado a experiência do engenheiro projetista, pode trazer economia à infraestrutura de um edifício.Trabalho não financiado por agência de fomento, ou autofinanciad
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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