1,721,160 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
Reduced coherence in double-slit diffraction of neutrons
No full textIn diffraction experiments with particle beams, several effects lead to a fringe visibility reduction of the interference pattern. We theoretically describe the intensity one can measure in a double-slit setup and compare the results with the experimental data obtained with cold neutrons. Our conclusion is that for cold neutrons the fringe visibility reduction is due not to decoherence, but to initial incoherence
Reply to "Comment on `Reduced coherence in double-slit diffraction of neutrons'"
No full textWe reply to the comment by Sanz and Borondo [Phys. Rev. A 77, 057601 (2008)] on our paper [Tumulka et al., Phys. Rev. A 75, 055602 (2007)] concerning the double-slit diffraction experiment with neutrons published in Zeilinger et al. [Rev. Mod. Phys. 60, 1067 (1988)]. We argue in particular that Sanz and Borondo's new arguments for the presence of significant decoherence in that experiment are unconvincing
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
SIDEROBLASTOS EM ANEL APÓS TRATAMENTO DE LMA EM PACIENTE IDOSO COM PROTOCOLO VIALE- A: RELATO DE DOIS CASOS
No full textIntrodução: A leucemia mieloide aguda (LMA) é a leucemia aguda mais comum, acometendo predominantemente um grupo de pessoas idosas, com uma idade mediana de 67 anos ao diagnóstico, sendo que esses pacientes frequentemente têm reposta insatisfatória ao tratamento quimioterápico convencional. A combinação de agente hipometilante com venetoclax, mostrou-se eficaz e segura neste cenário, sendo atualmente a terapia de escolha em pacientes maiores 60 anos e/ou com comorbidades limitantes. Efeitos adversos dessa terapia ainda estão sendo descobertos. Objetivo: Relatar dois casos de LMA em tratamento com o protocolo VIALE-A que tiveram surgimento de sidero blastos em anel ao curso do tratamento com Viale A. Relato de caso: Caso 1: LAB, sexo masculino, 63 anos, diagnóstico de LMA com TP53mutado, apresentava ao diagnóstico 60% de blastos à avaliação medular, foi submetido a tratamento com o protocolo VIALE-A e, após o 8° ciclo, foi observado medula óssea (MO)hipercelular, com displasia multilinhagem e presença de sidero blastos em anel (73%). Caso 2: AC, sexo masculino, 79 anos, LMA de risco intermediário, com displasia nas três séries analisadas e 18% de blastos no mielograma ao diagnóstico, após o 9° ciclo do protocolo VIALE-A, apresentava uma MO hipocelular, com displasia e presença desideroblastos em anel (59%) ao mielograma. Conclusão: Os pacientes relatados acima, alcançaram remissão morfológica com o protocolo de tratamento utilizado, evoluindo, após vários ciclos de tratamento, com displasia e presença de sidero blastos em anel. O caso 1 foi submetido a transplante de medula óssea após melhora do perfomance status e o segundo caso segue em tratamento com o protocolo VIALE-A. Relatos sobre o surgimento de tal displasia após tratamento nesse perfil de pacientes são escassos em literatura. É incerto se isso pode conferir fator prognóstico ou influenciar na resposta alcançada
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
- …
