1,720,953 research outputs found
Pulmonary vein isolation with PVAC Gold in elderly patients
No full textObjetivo: Comparar a ablação com isolamento das veias pulmonares por cateter com o sistema PVAC Gold de segunda geração com o tratamento clínico em pacientes idosos ( 65 anos) com fibrilação atrial (FA) paroxística sintomática sem cardiopatia estrutural. Métodos: Estudo prospectivo, randomizado, com inclusão consecutiva de pacientes com FA paroxística, com idade 65 anos, divididos em 2 grupos: (1) o grupo de ablação com cateter PVAC Gold e (2) o grupo de tratamento clínico com drogas antiarrítmicas. Os desfechos primários foram recorrências de FA, progressão para formas de FA persistentes e mudanças na qualidade de vida por meio do escore de qualidade de vida da FA (QVFA). Resultados: Um total de 60 pacientes foram incluídos com a idade média de 72 ± 4,9 anos, sendo 53,3% do sexo feminino. Em um seguimento mediano de 719 dias, a análise global combinada mostrou que não houve diferença estatística na recorrência de FA (80,0% vs. 64,3%, p = 0,119). Um paciente do grupo PVAC (3,3%) e cinco (16,7%) pacientes do grupo DAA evoluíram para FA persistente (Razão de verosemelhança p = 0,073) ao final do seguimento. Ambas as estratégias apresentaram melhora semelhante no escore de qualidade de vida ao longo do seguimento (p < 0,01), não sendo observada diferença entre os grupos. No entanto, a maioria dos pacientes submetidos à ablação por cateter permaneceu sem droga antiarrítmica em comparação ao grupo clínico, (20% vs. 80%, p < 0,001). Oito pacientes (26,6%) do grupo ablação apresentaram lesões cerebrais agudas assintomáticas após o procedimento na avaliação pela ressonância magnética, exceto um paciente com hemiparesia transitória, sem sequelas ou impacto na avaliação pelo Mini Exame do Estado Mental (MEEM) ao longo de um ano. Conclusões: A ablação por cateter com PVAC Gold em pacientes idosos (65 anos) apresentou taxas de recorrência semelhantes em comparação ao tratamento ix clínico, com uso de menos drogas antiarrítmicas após dois anos de seguimento, sem diferença nos escores de qualidade de vida. Apesar da alta taxa de lesões isquêmicas na RNM após a ablação, não foram observadas alterações na avaliação cognitiva pelo MEEM e nenhum paciente apresentou sequela aparente ou permanenteObjective: To compare pulmonary vein isolation with the second-generation PVAC Gold system with clinical treatment in elderly patients ( 65 years) with symptomatic paroxysmal atrial fibrillation (AF) without structural heart disease. Methods: Prospective, randomized study, with consecutive inclusion of patients with paroxysmal AF, aged 65 years, divided into 2 groups: (1) the PVAC Gold catheter ablation group and (2) the clinical treatment group with antiarrhythmic drugs . Primary outcomes were AF recurrences, progression to persistent forms of AF, and changes in quality of life through the AF Quality of Life Score (QVFA). Results: A total of 60 patients were included with a mean age of 72 ± 4.9 years, of which 53.3% were female. At a median follow-up of 719 days, global pooled analysis showed no statistical difference in AF recurrence (80.0% vs. 64.3%, p = 0.119). One patient in the PVAC group (3.3%) and five (16.7%) patients in the AAD group progressed to persistent AF (Likewise ratio p = 0.073) at the end of follow-up. Both strategies showed a similar improvement in the quality of life score throughout the follow-up period (p < 0.01), with no difference being observed between the groups. However, most patients undergoing catheter ablation remained off antiarrhythmic drug compared to the clinical group (20% vs. 80%, p < 0.001). Eight patients (26.6%) in the ablation group had asymptomatic acute brain injuries after the procedure in the MRI assessment, except for one patient with transient hemiparesis, without sequelae or impact on the Mini Mental State Examination (MMSE) assessment throughout one year. Conclusions: Catheter ablation with PVAC Gold in elderly patients ( 65 years) had similar recurrence rates compared to medical treatment, with less antiarrhythmic drug use after two years of follow-up, with no difference in quality of life scores. Despite the high rate of ischemic lesions on MRI after ablation, no changes were observed in the cognitive assessment by the MMSE and no patient had apparent or permanent sequela
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
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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