1,721,037 research outputs found
Extracorporeal cardiopulmonary support in acute high-risk pulmonary embolism: Still waiting for solid evidence
No full textThis editorial refers to ‘Outcomes after extracorporeal membrane oxygenation for the treatment of high-risk pulmonary embolism: a multicentre series of 52 cases’†, by N.Meneveau et al., onpage 4196
Confirmation of survival prediction based on 2022 ESC/ERS pulmonary hypertension guidelines new haemodynamic thresholds
No full textIn the past decades, different haemodynamic definitions of pulmonary hypertension (PH) have been proposed and based on studies assessing the upper limit of normal pulmonary arterial pressure (PAP) in healthy subjects,1–3 and by studies investigating the prognostic relevance of increased PH.4–7 Despite the large interest in this topic, specific studies validating the reliability of the different definitions are lacking
Progressi nel trattamento delle malattie della circolazione polmonare
No full textMultiple progresses have been achieved in pulmonary vascular diseases in the last decades, including the areas of pulmonary hypertension and pulmonary thromboembolic disease. The increase in knowledge has been accomplished in pathophysiological, clinical and treatment domains and has included as examples the discovery of gene mutations related to the hereditary forms of pulmonary arterial hypertension and the proposals of personalized treatment algorithms in patients with acute pulmonary embolism, chronic thromboembolic pulmonary hypertension and pulmonary arterial hypertension, validated in this specific area by more than 45 randomized controlled trials. The diagnostic processes have been refined, increasing the awareness that appropriate and precise diagnosis is essential for the optimal treatment strategy. The drugs approved for pulmonary arterial hypertension are recommended in this group and in specific patients with chronic thromboembolic pulmonary hypertension but are contraindicated in patients with pulmonary hypertension due to left heart and lung diseases. In pulmonary vascular diseases, the therapy cannot be considered as a simple prescription of medications and interventions but is a complex strategy which includes baseline patients' risk stratification, initial therapy, long-term follow-up and treatment adjustments when required. Today, computed tomography pulmonary artery angiography is the gold standard for diagnosis in both acute pulmonary embolism and chronic thromboembolic pulmonary hypertension. In this last condition, the combination with data derived from the right heart catheterization and the traditional pulmonary artery angiography, allows to a team of experts to decide if the patient is a candidate to surgical pulmonary endarterectomy or to percutaneous pulmonary artery balloon angioplasty which may improve symptoms, quality of life and prognosis
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
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