1,721,145 research outputs found
The unresolved issue of false-positive D-dimer results in the diagnostic workup of pulmonary embolism
No full text
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
Analgesic and anxiolytic effects of virtual reality during invasive procedures in an emergency department: a randomized controlled study
No full textStudy objective:
Invasive medical procedures are commonly performed in the emergency department (ED) and cause pain and anxiety. Distraction is a nonpharmacological strategy that reduces procedural pain and anxiety. The analgesic and anxiolytic efficacy of distraction provided by 3D virtual reality was compared with 2D distraction during minor ED procedures.
Methods:
This randomized controlled study conducted in the ED of a teaching hospital included patients aged 18 or older who needed an invasive procedure. Patients watched the same computer-generated world either in a virtual reality head-mounted display (intervention) or on a laptop screen (control). Our primary outcomes were pain and anxiety levels during the procedure assessed on a 100-mm visual analog scale (VAS). Secondary outcomes included the global impression of presence in the computer-generated world (telepresence) measured with the IGroup questionnaire score and cybersickness.
Results:
One hundred seventeen patients were included in the final analysis. Maximal median procedural pain and anxiety levels were: 50 (IQR 26;67) vs. 47mm (19;70) (P=0.61) and 36 (15;62) vs. 32mm (7;51) (P=0.20) in the control and intervention groups, respectively. The IGroup scores were 2.0 (1.0;4.0) vs. 4.0 points (2.0;5.0) (P=0.002) and the proportion of cybersickness 53% vs 49% (P=0.71) in the same respective groups.
Conclusions:
Distraction provided with viewing of a 3D virtual world in a head-mounted display was well tolerated and resulted in a higher sense of telepresence. However in our adult ED population, it did not result in greater procedural analgesia or anxiolysis than viewing a 2D projection of the same virtual world
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
Unscheduled consultations: a cross- sectional study of patients using walk-in emergency clinics
No full textQuestions under study/principles
Switzerland experiences a strong increase of the unscheduled medical consultations which participates to the congestion of the hospital emergency departments. In this context, many walk-in emergency clinics have been established but less is known about the characteristics of the patients who visit these structures.
Methods
First, retrospective data about frequentation between 2011 and 2014 of three walk-in emergency clinics in Lausanne were analysed. Secondly, a questionnaire about sociodemographic data, access to care, patient's usual health status, and their global resources to solve their health problem was submitted during one week in the waiting room of each clinic from 1-20 September 2014, to patients aged 16 or older.
Results
The overall number of consultations increased globally by 6.9%, whereas Lausanne's population only increased by 2.9%. 305 (87%) patients were included for the questionnaire. The mean age of participants was 40.6 years old, 50% were women and 65% were Swiss. 76% of patients had a primary care physician (PCP), 38.7% of them said they had try to contact him in the last 24h for their problem. Among them, 81% did not get an appointment on the same day.
Conclusions
Our study shows that many patients suffering from a non-life-threatening health problem use walk-in emergency clinics as their PCP. Walk-in emergency clinics seem to respond to patient's needs and to the change in the way that care is consumed
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