1,720,972 research outputs found
Non invasive ventilation in patients with hematologic malignancy: A new prospective.
No full text.Immunosuppressed patients are usually considered together without distinction. However, patients with hematologic malignancy should be included in a different subcategory. The outcome of this population has improved over the years. However, mortality rate continues to be high, especially when respiratory complications are present and mechanical ventilation is required. Non-invasive ventilation (NIV) demonstrated its efficacy on the process of respiratory failure improving clinical outcomes in patients of different diagnoses. The recommendations of the guidelines to use NIV in immunosuppressed patients have been quite prudent. However, NIV has been recently applied in hematologic malignancy patients during an early or/and late respiratory failure, showing a favourable impact improving the outcome. At an early stage, one study showed CPAP to reduce respiratory complications and to improve the outcome of mortality rate from 75% in the control group to 15% in the treatment group, when compared to oxygen therapy. In other two randomized control trials, NIV in comparison to invasive mechanical ventilation demonstrated to reduce mortality rate from 100% to 53%- 61%. As most of the non randomized control trials applied NIV in a general population of immunosuppressed patients, results are very difficult to analyse. So far, the treatment starting, and duration time are still not clearly defined. Novel clinical trials should be performed to elucidate the appropriate application of NIV in this population
Use of continuous positive airway pressure after abdominal surgery: Should it be recommended for every patient?
No full textN/
Transtracheal open ventilation in acute respiratory failure secondary to severe chronic obstructive pulmonary disease exacerbation
No full textTranstracheal open ventilation (TOV) to treat acute COPD exacerbation in non-invasive ventilation (NIMV) failures
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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
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
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