1,720,982 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
Airflow Obstruction and Hyperresponsiveness Induced by Saline Infusion
No full textPellegrino R., Dellaca R.L., Macklem P.T., et al. Airflow Obstruction and Hyperresponsiveness Induced by Saline Infusion. Am J Respir Crit Care Med 2003. 167: A18
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
Pulmonary Function in Neonatal Respiratory Distress Syndrome : Effects of Two Modes of Non Invasive Ventilation
No full textBACKGROUND: Despite of improved survival of premature infants, the incidence of long-term complications associated with ventilation-induced lung injury remains high. Non-invasive ventilation (NIV) is able to reduce the adverse effects of mechanical ventilation. High flow nasal cannula (HFNC) is emerging as an efficient form of NIV.
OBJECTIVE: To compare the effects of nasal continuous positive airway pressure (NCPAP) and heated humidified HFNC on lung function in preterm newborns with respiratory distress syndrome (RDS).
DESIGN/METHODS: A randomized crossover trial was performed on newborns with mild/moderate RDS, gestational age (GA) <34 weeks and postnatal age (PNA) <96 hours. Each neonate underwent both NCPAP (Infant Flow Driver System - EME) delivering 2, 4, 6 cmH2O and heated humidified HFNC (Precision Flow - Vapotherm) at 2, 4, 6 lpm. Sequences of these six, 15 minutes lasting ventilatory conditions were randomized. Lung volumes were measured using respiratory inductance plethysmography (Bioradio 150-CleveMed) calibrated with face-mask pneumotachography. An esophageal balloon estimated pleural pressure and a catheter-transducer system measured retropharyngeal pressure (Prp). Breathing pattern, lung mechanics, work of breathing (WOB), labored breathing index (LBI) and pressure time product (PTP) were calculated. ANOVA on Ranks for repeated measurements and Tukey test for multiple comparisons were performed. Differences were considered statistically significant for p<0.05.
RESULTS: 20 newborns (mean GA 31±1 weeks, mean birth weight 1510±302g, mean PNA 53.5±27.5 hours) were enrolled. NCPAP was compared to HFNC selecting the conditions providing a Prp at end-expiration as close as possible to 2 and 4 cmH2O. At the same Prp, no significant difference was noticed in breathing pattern (Respiratory Rate, Tidal Volume, Minute Ventilation, Inspiratory and Expiratory Asynchrony Index), lung mechanics (Dynamic Resistance and Compliance), WOB (inspiratory, expiratory, elastic and resistive), LBI and PTP. A trend in higher values of WOB, LBI and PTP in HFNC was noticed.
CONCLUSIONS: Our results show that NCPAP and HFNC have similar effect on breathing pattern, lung mechanics and WOB, providing comparable ventilatory support in preterm infants with RDS. Further studies are needed to identify possible differences between the two approaches on clinical long-term outcome
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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