1,721,030 research outputs found
Esperienza clinica in presidio medico avanzato (PMA), nell’emergenza sisma di L’Aquila: studio osservazionale.
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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
Glidescope videolaryngoscopy vs Frova endotracheal introducer in difficult unexpected airway management
No full textBackground and Goal of Study: In unpredicted difficult orotracheal intuba- tion (OTI), both national and international guidelines suggest to avoiding more than three attempts in order to reduce the risk of “cannot intubate - cannot ventilate” situation. The second attempt should be performed with some mod- ified elements such as laryngoscope blades, position of the patient’s head, BURP, etc., but the third one should be performed using alternative devices. The guidelines don’t provide any precise indications about videolaryngo- scopes as alternative to fibrobroncoscopy. The aim of this study is comparing the ef ficacy of the Frova and Glidescope in the unpredicted dif ficult OTI in pa-
tients admit ted to elective inter ventions and the evaluation of stress
by the maneuver per formed using the t wo devices, through hemodynamic monitoring.
Materials and methods: A randomized controlled trial was performed on 40 consecutive patients, through the ages of 18 to 70, under general anesthe- sia with more than one attempts of the OTI maneuver. A Frova Introducer or Glidescope were used while comparing the duration of the first attempt to the duration of the OTI using Frova Introducer or Glidescope. Cardiorespira- tory monitoring predicted the registration of the following parameters: BP, HR, SaO2 and EtCO2,at T0= before induction;T1=before direct laryngoscopy with a Macintosh laryngoscope,T2=during direct laryngoscopy,T3= OTI with Frova or Glidescope,T4=10 minutes later.
Results and discussion: There were 40 randomized consecutive patients with unpredicted dif ficult OTI in the Frova group (FI) (n=20) and in the Glides- cope group (GS) (n=20).Most of the patients of both groups were intubated at the first attempt using Frova (n=13) patients and patients with Glide (n=12); the rest of the patients at the second attempt. The overall time needed for the correct placement of the endotracheal tube was significantly briefer (P< 0.001) in the FI group (12.1±4.1 sec) compared to the GS group (39.9±11.8 sec). Monitoring BP and HR in various times has shown a significant increase in both groups corresponding to T2 and T3 (P < 0.001) corresponding to direct laryngoscopyConclusions: All patients in this study were successfully intubated; already in the first attempt with Frova or Glidescope in most cases. The SaO2 values were always above the security levels (< 97%). The OTI with Frova was faster and less traumatic compared to the one with glidescop
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
Ansiolisi periopeatoria nei pazienti sottoposti a tromboendoarterectomia carotidea (TEAC)
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