1,720,959 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Analysis of factors related to anti-epileptic drug resistance in mesial temporal lobe epilepsy
No full textOrientadores: Fernando Cendes, Íscia Lopes-CendesTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Ciências MédicasResumo: O objetivo foi realizar uma análise multifatorial dos aspectos clínicos e de ressonância magnética (quantitativos e qualitativos) relacionados à resistência ao tratamento com drogas anti-epilépticas (DAES) em pacientes com epilepsia de lobo temporal mesial e melhor caracterizar o grupo de resposta intermediário a DAES, aqui denominado remitente-recorrente. Foram incluídos 165 pacientes e divididos em 3 grupos de acordo com a resposta medicamentosa: 50 respondedores (31 mulheres) , 87 não respondedores ao uso de DAES (53 mulheres) e 28 remitentes-recorrentes (17 mulheres) . Estes foram avaliados quanto à idade, freqüência de crises e idade no início destas, presença de crises febris, presença e lateralidade da atrofia hipocampal à análise visual, fatores precipitantes e DAES utilizadas. A quantificação dos volumes hipocampais foi realizada através de volumetria manual pelo software DISPLAY e as comparações dos volumes médios de ambos os hipocampos foi realizada entre os 3 grupos e 30 controles sadios por ANOVA. As imagens de ressonância magnética também foram avaliadas através da técnica de Morfometria Baseada em Voxel (VBM) com o software SPM 5 (Statistical Parametric Mapping)/MATLAB 7.7.0, comparando os três grupos com 75 indivíduos normais e entre si através de Teste -T. Observamos que idade de início das crises foi menor (p=0,005) e a freqüência das crises ao início foi maior (p=0,018) em farmacorresistentes quando comparado aos outros 2 grupos. As DAES mais utilizadas foram a carbamazepina e o clobazam (em associação) em todos os grupos. As doses de carbamazepina utilizadas foram maiores em farmacorresistentes (p<0,001) e remitentes-recorrentes (p=0,02) em comparação aos responsivos. Em relação ao clobazam, observamos dose significativamente maior somente nos farmacorresistentes em comparação aos outros dois grupos (p=0,017). A comparação da média dos volumes hipocampais entre os 3 grupos e controle evidenciou diferenças somente entre farmacorresistentes e controles bilateralmente (esquerda ,p = 0,004; direita, p=0,02). A análise por VBM evidenciou atrofia de substância cinzenta em todos os grupos. No grupo farmacorresponsivo tal atrofia foi mais restrita a áreas ipsilaterais ao foco epileptigênico, ao passo que nos grupos farmacorresistente e remitente-recorrente esta atrofia apresentou-se mais difusa. A comparação entre os grupos evidenciou as seguintes áreas com maior redução de substância cinzenta nos grupos farmacorresistente e remitenterecorrente quando comparados aos farmacorresponsivos: frontal periorbital bilateral (p<0,01), cíngulo (p<0,05) e temporal contralateral ao foco epileptogênico (p<0,05). Desta forma, observamos que embora as características clínicas demonstrassem mais similaridades entre os grupos respondedor e remitente-recorrente, a análise de VBM mostrou redução de substância cinzenta mais difusa em farmacorresistentes e remitentesrecorrentes. Assim pudemos observar que as variáveis clínicas relacionadas ao pior prognóstico foram idade e freqüência de início de crises. Em relação às variáveis estruturais, embora a atrofia de substância cinzenta (SC) se apresentasse mais difusamente em pacientes de pior resposta medicamentosa, também ocorre em áreas extra-hipocampais e mesmo extratemporais em pacientes considerados farmacorresponsivos mesmo que ipsilateralmente ao foco epileptogênico. Por último, conseguimos caracterizar clínica e estruturalmente o grupo remitente-recorrente, observado na prática clínica, porém até então muito pouco reconhecido na literaturaAbstract: The objective of the present work was to investigate the relationship between brain MRI and clinical characteristics and patterns of antiepileptic drug (AED) response in patients with mesial temporal lobe epilepsy (MTLE).In order to do that,one hundred sixty five MTLE patients were divided into seizure-free with AED (50 AEDresponders, 31 women), 87 pharmacoresistants (53 women), and 28 remitting-relapsing seizure control group (17 women). All groups were evaluated regarding age, frequency of seizures and age at epilepsy onset, duration of epilepsy, febrile seizures (FS), presence and side of hippocampal atrophy on visual inspection (HA), initial precipitating injuries (IPIs), type and quantity of AEDS used. The right and left hipoccampi from 99 patients belonging to all three groups (43 pharmacoresistants, 31 pharmacoresponsive and 25 remitting-relapsing subjects). were submitted to manual morphometry by DISPLAY software (Brain Imaging Centre, Montreal, Canada) as well as hipoccampi selected from 30 healthy controls. The calculated mean from those hipoccampi were compared within subjects and with controls. For gray matter (GM) MRI voxel-based morphometry (VBM) we selected only patients with unilateral HA on visual MRI analysis (n=100). Comparisons were made between all groups and 75 healthy controls. Age at epilepsy onset was lower (p=0,005) and initial frequency of seizures was higher in pharmacoresistants compared with the other two groups (p=0,018). The most used AEDS were carbamazepine and clobazam (always in association). The highest carbamazepine dose was observed in pharmacorresistants (p<0,001) and remitting-relapsing group (p=0,02). The highest dose of clobazam occurred only in pharmacoresistant group (p=0,017). The comparison between the mean hippocampi volumes from three groups and controls showed differences only on the pharmacoresistants left (p=0,004) and right(p=0,02) hippocampus comparing to controls. All groups showed GM atrophy compared to controls in ipsilateral hippocampus, bilateral parahippocampal gyri, frontal, occipital, parietal and cerebellar areas. In the AED-responders group such findings were more restricted to areas ipsilateral to the epileptic focus and more widespread in pharmacoresistants and remitting-relapsing groups. VBM pairwise comparisons showed areas with GM volume reduction in pharmacoresistants and remitting-relapsing compared with AED-responders in bilateral periorbital frontal (p< 0,01), cingulum (p<0,05), and temporal lobe contralateral to the epileptic focus (p< 0,05). We may conclude that, pharmacoresistants and remittingrelapsing patients presented a similar pattern of GM atrophy which was more widespread compared with AED-responders on VBM. We could also observe that age at epilepsy onset was lower (p=0,005) and initial seizure frequency was higher in pharmacoresistantsDoutoradoNeurocienciasDoutor em Ciência
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
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