1,720,980 research outputs found
Noninvasive ventilation outside of intensive care units
No full textNoninvasive mechanical ventilation is an effective technique for the management of patients with acute or chronic respiratory failure due to a variety of disorders. This comprehensive and up-to-date book explores all aspects of the subject. The opening sections are devoted to theory and equipment, with detailed attention to the use of full-face masks or helmets, the range of available ventilators, and patient-ventilator interactions. Clinical applications are then considered in depth in a series of chapters that address the use of noninvasive mechanical ventilation in chronic settings and in critical care, both within and outside of intensive care units. Due attention is also paid to weaning from conventional mechanical ventilation, potential complications, intraoperative applications, and staff training. The closing chapters examine uses of noninvasive mechanical ventilation in neonatal and pediatric care. This book, written by internationally recognized experts, will be an invaluable guide for both clinicians and researchers
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
Does tinnitus exist in normal hearing patients?
No full textThe correlation between tinnitus and hearing threshold was often evaluated. Many authors reported that a big percentage of tinnitus patients suffered from hearing loss. But the auditory evaluation in tinnitus patients with normal hearing threshold was often little accurate. In 2008 Ami and colleagues suggested that reduced outer hair cell activity, as detected by reduced DPOAE levels, may manifest as tinnitus even before there is a shift on hearing threshold. In order to investigate the correlations between tinnitus and hearing threshold and between tinnitus and outer hair cell activity, we analyzed 150 tinnitus patients. All subjects were submitted to audiometric evaluation, including pure tone audiometry (PTA; 250 - 16,000 Hz), immittance, high-definition distortion product otoacoustic emissions (DPOAE; 10 p./octave). In particular the focus was on normal hearing subjects: normal hearing was defined as PTA maximum threshold 20dB HL for frequencies between 250 and 16,000 Hz in both ears; type A tympanogram and counter-lateral stapedial reflex recordable at the threshold (90 dB). First analyzes showed that an important percentage of tinnitus patients has a PTA threshold at 15dB HL for frequencies between 250 and 8,000 Hz, further statistical analyses will be performed on DPOAE and on PTA between 8kHz and 16 kHz
Esistono pazienti veramente normoacusici con acufene?
No full textSpesso è stata valutata la correlazione tra acufene e soglia uditiva. Molti autori riportano che un’importante percentuale di pazienti con acufene sono affetti da sordità, ma non si hanno certezze rispetto alla percentuale di normoudenti. 150 pazienti con acufene sono stati sottoposti a valutazione audiologica, esame audiometrico tonale (PTA; 250 - 16,000 Hz), ed impedenzometria. Il 5% dei soggetti aveva una perdita pari o inferiore a 20 dB lungo tutto l’audiogramma, fino a 16 KHz. Il 13% fino a 8 KHz e il 20% fino a 4 KHz. Questi dati permettono di concludere che l’acufene spesso è associato a perdita uditiva, ma non necessariamente. Ulteriori indagini sono necessarie per indagare questo gruppo di soggetti normoacusici con acufene
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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