1,720,965 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
Transesophageal Echocardiographic Assessment in Patients with Severe Respiratory Distress due to COVID-19 in the Prone Position: A Feasibility Study
No full textBackground and aim: Our aim was to assess the feasibility, safety, and utility of implementing transesophageal echocardiographic screening in patients with coronavirus disease-2019 (COVID-19)-related acute respiratory distress syndrome (ARDS), receiving mechanical ventilation (MV) and in prone position (PP). Methods: Prospective observational study performed in an intensive care unit; patients 18 years, with ARDS, invasive MV, in PP were included. A total of 87 patients were included. Results: There was no need to change ventilator settings, hemodynamic support, or any difficulties with the insertion of the ultrasonographic probe. Mean duration of transesophageal echocardiography (TEE) was 20 minutes. No displacement of the orotracheal tube, vomiting, or gastrointestinal bleeding was observed. Frequent complication was displacement of the nasogastric tube in 41 (47%) patients. Severe right ventricular (RV) dysfunction was detected in 21 (24%) patients and acute cor pulmonale was diagnosed in 36 (41%) patients. Conclusion: Our results show the importance of assessing RV function during the course of severe respiratory distress and the value of TEE for hemodynamic assessment in PP.Fil: Sosa, Ariel Fernando. Hospital Aleman; ArgentinaFil: Wehit, Jeanette. Hospital Aleman; ArgentinaFil: Merlo, Pablo. Hospital Aleman; ArgentinaFil: Matarrese, Agustín. Hospital Aleman; ArgentinaFil: Torti, Bárbara. Hospital Aleman; ArgentinaFil: Roberti, Javier Eugenio. Hospital Alemán; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: César, Germán. Hospital Aleman; ArgentinaFil: Martínez, Juan Ruiz. Hospital Aleman; ArgentinaFil: Osatnik, Javier. Hospital Alemán; ArgentinaFil: Soliman Aboumarie, Hatem. Harefield Hospital; Reino Unid
Identificación de miocarditis asociada a COVID-19 por ecocardiografía transesofágica speckle-tracking en cuidado intensivo
No full textA 68-year-old male presented with flu-like symptoms, fatigue, history of obesity, hypertension, type 2 diabetes and chronic smoking. Chest radiography revealed right basal opacity consisting of infiltrate. With respiratory failure, orotracheal intubation and mechanical ventilation were performed. Patient presented gas exchange alteration. Real-time PCR detected SARS-CoV-2. Treatment with liponavir/ritonavir and hydroxychloroquine was started. Because of poor acoustic window, speckle-tracking transoesophageal echocardiography (TEE) was performed, detecting deterioration in global longitudinal strain. Acute COVID 19 infection led us to suspect myocarditis, with no other signs or symptoms other than elevated troponin and altered strain. On day 15, the patient suffered bacteraemic sepsis at endovascular focus with Serratia marcescens and multiorgan failure. TEE-guided haemodynamic monitoring was repeated showing global longitudinal strain improvement. Acute COVID 19 infection led us to suspect myocarditis, with no other signs or symptoms beyond elevated troponin and altered strain.Un hombre de 68 años presentó síntomas similares a los de la gripe, fatiga, antecedentes de obesidad, hipertensión, diabetes de tipo 2 y tabaquismo crónico. La radiografía de tórax reveló una opacidad basal derecha consistente con infiltración. Se realizó una intubación orotraqueal y ventilación mecánica. El paciente presentó alteración del intercambio gaseoso. La PCR en tiempo real detectó SARS-CoV-2. Se inició el tratamiento con liponavir/ritonavir e hidroxicloroquina. Debido a la deficiente ventana acústica, se realizó una ecocardiografía transoesofágica (ETE) de speckle-tracking, que detectó el deterioro de la tensión longitudinal global. La infección aguda por COVID 19 nos llevó a sospechar de miocarditis, sin más signos o síntomas que la elevación de la troponina y la alteración de la cepa. El día 15, el paciente sufrió una sepsis bacteriana en el foco endovascular con Serratia marcescens y fallo multiorgánico. Se repitió la monitorización hemodinámica guiada por ETE que mostró una mejora en la tensión longitudinal global.Fil: Wehit, Jeanette M.. Hospital Alemán; ArgentinaFil: Sosa, Fernando A.. Hospital Alemán; ArgentinaFil: Merlo, Pablo. Hospital Bernardino Rivadavia; ArgentinaFil: Roberti, Javier Eugenio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Centro de Investigaciones en Epidemiología y Salud Pública. Instituto de Efectividad Clínica y Sanitaria. Centro de Investigaciones en Epidemiología y Salud Pública; Argentina. Hospital Alemán; ArgentinaFil: Osatnik, Javier. Hospital Alemán; Argentin
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
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