1,720,958 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
Hemostasis and Stem Cell Therapy in Myocardial Infarction
Full text linkCardiovascular disease has been well known as the most frequent cause of death in many countries all over the world.1 Acute myocardial infarction (AMI) is a sudden clinical coronary event that has high mortality and morbidity rate. The survivals of AMI will have left ventricle (LV) remodelling and decreased cardiac functions in the following years due to necrosis of cardiomyocites after AMI leading to chronic heart failure. However, revascularization therapy such as percutaneous coronary intervention (PCI) and medications cannot regenerate the necrotic cardiomyocites. Stem cell (SC) therapy as novel strategy in management of AMI has been developing so fast recently. Potential beneficial mechanism of SC therapy after AMI includes myocardial preservation, decreased infarct expansion and myocardial regeneration.2 To date, SC therapy in management of AMI seemed feasible and safe in clinical practice. Number of trials had been conducted to search for promising results and answers to many questions regarding the matter. The TOPCARE-AMI (transplantation of progenitor cells and regeneration enhancement in acute myocardial infarction) with 59 patients showed improvement in ejection fraction and infarct size after 1 year follow-up. The REPAIR-AMI (reinfusion of enriched progenitor cells and infarct remodelling in acute myocardial infarction) trial with larger samples of 204 patients showed improvement in global LVEF at 4 months follow up from 48.3%±9.2% to 53.8%±10.2%.6 A systematic review of SC therapy in AMI with 13 RCT and 811 enrolled patients indicated LV function improvement in short term follow-up
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
Anti-Inflamatory Drug for Myocardial Injury in Acute Coronary Syndrome
Full text linkAcute coronary syndrome (ACS) as the acute setting of coronary chronic syndrome has been widely known to have high mortality rates. ST segment elevation of myocardial infarction (STEMI) is one category of ACS which occurs when major coronary arteries are fully blocked acutely and diminish coronary flow leading to myocardial injury and necrosis. Epidemiology data showed that global prevalence varied from 3.8% in patients whose age to 9.5%. The national heart survey of Indonesia also revealed the rising trends of STEMI from 0.63% in 2013 to 1.5% in 2018. STEMI is associated with high mortality despite advanced system and management such as primary percutaneous coronary intervention (PCI). Colchisine is derived from Colchicum autumnale plant and known for remedies for a long time since 1500 BC. The remedy effect is due to combination anti-inflammatory actions. Key actions include decrease neutrophile L-selectin expression on endothelial cell and interfere the interaction of neutrophile-platelet which is leading to atherothrombosis. The idea to use colchisine in STEMI patients to reduce mortality rate is presumed through this mechanism. To date, colchisine already known to reduce anti-inflammatory markers in ACS. Colchisine is widely known to be safe and effective as anti-inflammatory drug. Numerous studies had investigated the effect of colchisine in various setting of coronary artery disease. Unfortunately, various results had made it unclear. Meanwhile, the mechanism of colchisine in acute and chronic coronary syndrome need to be explored comprehensively. The evidence of clinical studies for the beneficial use of colchisine in ACS especially in STEMI is still insufficient. The ongoing studies worth to be waited for the supporting clinical evidence for the use of colchisine in acute coronary syndrome
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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