925 resultados para citation
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Neste artigo, é usada análise bibliométrica para entender a influência de autores e instituições na produção acadêmica em Recursos Humanos no Brasil na década de 90, bem como para mapear o comportamento de auto-citações e citações à própria instituição dos autores que produziram no período. O estudo levantou, nos 290 artigos de RH publicados na década de 90 (1991 a 2000) nos anais do Enanpad, a constituição, origem e padrão de interrelação de todas as citações, autores e instituições que publicaram e foram citados na área. No total, analisaram-se os padrões bibliométricos de 5814 citações, que compreendiam 342 autores, advindos de 51 instituições. Os resultados mostram uma área com alto índice de auto-citação e endogenia, e com uma elevada incidência de citação de jornais, revistas e autores estrangeiros e não acadêmicos; revelam também que Maria Tereza Fleury (FEA/USP) foi a acadêmica mais citada; que a USP, UFMG, UFRGS e a FGV-EAESP (nessa ordem) são as instituições com os autores mais citados; que a RAE é o veículo nacional mais referenciado no campo; e que alguns autores e instituições que publicaram no período têm elevada propensão à auto-citação e à consulta predominante a autores de sua própria instituição. O artigo termina oferecendo ao campo sugestões para desenvolvimento e debate, a partir dos seus resultados e sua comparação com trabalhos anteriores analisando a mesma base amostral.
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Esta pesquisa teve como objetivo identificar fatores críticos que possibilitarão implantação, com desenvolvimento coletivo individual, de uma Política Pública centrada na variável solidariedade, como meio de busca da integração para melhoria da Educação Básica Profissional do Sistema das Escolas Técnicas do Estado do Rio de Janeiro, sob responsabilidade da Fundação de Apoio Escola Técnica (FAETEC). pesquisa teve como referência de busca de dados informações, em sua maioria, de profissionais, alunos stakeholders alijados da participação concreta da atual Política Pública da FAETEC de suas respectivas unidades. Por isso Paulo Freire também serviu como referencial, principalmente no que diz em relação aos excluídos na página 19, do livro "Educação Mudança" quando escreve: "O verdadeiro compromisso solidariedade, não solidariedade com os que negam compromisso solidário, mas com aqueles que, na situação concreta, se encontram convertidos em coisas". Essas premissas fortaleceram escolha da pesquisa-ação como metodologia. Dos stakeholders citamos o Sindicato dos Técnicos Industriais do Estado do Rio de Janeiro (SINTEC-RJ). Associação de Pais Responsáveis de Alunos da Escola Técnica Estadual Adolpho Bloch (APRAETEAB) Conselho Regional de Engenharia Arquitetura (CREA-RJ) através de Técnicos que são Inspetores na atual gestão. Participaram também outras pessoas interessadas, cujas colaborações foram efetivas, todos se empenharam em colaborar para que, mesmo enfrentando dificuldades, pesquisa fosse suficiente mostrasse que estávamos fertilizando terreno propício implantação futura de uma nova Política Pública nessa Instituição, combatendo egoísmo, orgulho vaidade daqueles que, independentemente de ideologias já foram corroídos em seu caráter, mais, demonstram em seu corporativismo mal orientado, que egoísmo coletivo traz de malefícios, inclusive o de não conseguir ver possibilidade de um mundo melhor: uma outra globalização.
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The number of research papers available today is growing at a staggering rate, generating a huge amount of information that people cannot keep up with. According to a tendency indicated by the United States’ National Science Foundation, more than 10 million new papers will be published in the next 20 years. Because most of these papers will be available on the Web, this research focus on exploring issues on recommending research papers to users, in order to directly lead users to papers of their interest. Recommender systems are used to recommend items to users among a huge stream of available items, according to users’ interests. This research focuses on the two most prevalent techniques to date, namely Content-Based Filtering and Collaborative Filtering. The first explores the text of the paper itself, recommending items similar in content to the ones the user has rated in the past. The second explores the citation web existing among papers. As these two techniques have complementary advantages, we explored hybrid approaches to recommending research papers. We created standalone and hybrid versions of algorithms and evaluated them through both offline experiments on a database of 102,295 papers, and an online experiment with 110 users. Our results show that the two techniques can be successfully combined to recommend papers. The coverage is also increased at the level of 100% in the hybrid algorithms. In addition, we found that different algorithms are more suitable for recommending different kinds of papers. Finally, we verified that users’ research experience influences the way users perceive recommendations. In parallel, we found that there are no significant differences in recommending papers for users from different countries. However, our results showed that users’ interacting with a research paper Recommender Systems are much happier when the interface is presented in the user’s native language, regardless the language that the papers are written. Therefore, an interface should be tailored to the user’s mother language.
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Journal impact factors have become an important criterion to judge the quality of scientific publications over the years, influencing the evaluation of institutions and individual researchers worldwide. However, they are also subject to a number of criticisms. Here we point out that the calculation of a journal’s impact factor is mainly based on the date of publication of its articles in print form, despite the fact that most journals now make their articles available online before that date. We analyze 61 neuroscience journals and show that delays between online and print publication of articles increased steadily over the last decade. Importantly, such a practice varies widely among journals, as some of them have no delays, while for others this period is longer than a year. Using a modified impact factor based on online rather than print publication dates, we demonstrate that online-to-print delays can artificially raise a journal’s impact factor, and that this inflation is greater for longer publication lags. We also show that correcting the effect of publication delay on impact factors changes journal rankings based on this metric. We thus suggest that indexing of articles in citation databases and calculation of citation metrics should be based on the date of an article’s online appearance, rather than on that of its publication in print.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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The rationalization of work in the Dentistry has been taking the professional to work for ways and systems based in the ergonomics, turning their work efficient and less tiring. Since their academic formation, the dentists surgeons are concerned with the high productivity in clinic and with the final result of the work, neglecting the way as it is executed, which reduce their work capacity and exhibits them to occupational diseases that could be minimized and/or forewarned. This research had as the main objective to investigate the knowledge of the Dentistry academics of Rio Grande do Norte Federal University concerning the Noise-induced Hearing Loss (NIHL), relating them at the noise levels that they are exposed, as well as to the preventive measures taken during the clinical activities. Was observed that 95% of the individuals know that the dentist surgeon is a professional in risk for NIHL. Among the causes of NIHL, the one that obtained the largest frequency citation was the high-speed handpieces, reminded by 92,4% of the academics. Among the students which enumerated protective measures for NIHL, 92% mentioned the use of the ear plugs, although 97% of the researched have told do not use any kind of preventive measure related to the noise. Was also observed that 96% of the academics notice the noise during the clinical attendance, what inconvenience 28,1% of them. Related the noise levels, the high-speed handpieces of the academics presented a medium value of 80,5 dB varying from 72,3 to 88,3 dB. The average of the ambient noise observed at the Integrated Clinic was about 74,8 dB. In spite of the noise levels in this research were observed below the established limits of tolerance by the legislation, they can provoke damages to the Dentistry professionals' health, or that suggests the need of an intervention and use of immediate preventive measures able to generate a healthy atmosphere of work and less risky
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The ability of neural networks to realize some complex nonlinear function makes them attractive for system identification. This paper describes a novel method using artificial neural networks to solve robust parameter estimation problems for nonlinear models with unknown-but-bounded errors and uncertainties. More specifically, a modified Hopfield network is developed and its internal parameters are computed using the valid-subspace technique. These parameters guarantee the network convergence to the equilibrium points. A solution for the robust estimation problem with unknown-but-bounded error corresponds to an equilibrium point of the network. Simulation results are presented as an illustration of the proposed approach.
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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The objective of this meta-analysis was to investigate the influence of meiotic spindle visualization in human oocytes on intracytoplasmic sperm injection (ICSI) outcomes. Search strategies included on-line Surveys of databases (MEDLINE, em BASE, Science Citation Index, Cochrane Controlled Trials Register and Ovid). The fixed effect was used for odds ratio. Ten trials fulfilled the inclusion criteria comparing in-vitro and clinical ICSI outcomes with or without visualization of meiotic spindle in fresh and in-vivo matured oocytes. According to the meta-analysis, the results showed statistically significant higher fertilization rate (P < 0.0001) when the meiotic spindle was viewed than when it was not. Moreover, the percentage of pro-nuclear-stage embyros with good morphology (P = 0.003), cleavage rate (P < 0.0001), percentage of day-3 top-quality embryos (P = 0.003) and percentage of embryos that reached the blastocyst stage (P < 0.0001) were statistically significantly better among, embryos derived from oocytes in which meiotic spindle was viewed compared with those in which meiotic spindle was not observed. However, these differences were not observed in the clinical pregnancy or implantation rates. This observation has clinical relevance mainly in countries where there is a legal limit on the number of oocytes to be fertilized. However, additional controlled trials are needed to further confirm these results.
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The present work describes the identification and characterization of a potyvirus isolated from siratro (Macroptilium atropurpureum Urb.) in the north-west region of the State of Sdo Paulo, Brazil. The virus was transmitted by mechanical inoculation. Its host range was restricted mainly to members of the Fabaceae. A cDNA fragment of about 930 bp was amplified by RT/PCR, cloned and sequenced. The fragment, which included the coat protein gene, had amino acid identity percentages between 88 and 98% with isolates of Bean common mosaic virus (BCMV). Phylogenetic analysis grouped the. siratro potyvirus and BCMV isolates in 99% of the replicates, including Azuki mosaic virus, Dendrobium mosaic virus, Blackeye cowpea mosaic virus and Peanut stripe virus, which have been classified as BCMV strains. This is the first citation on the presence of BCMV in siratro plants in Brazil.
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)