1,721,131 research outputs found
Translation Memory and medical reports: the benefits of CAT technology for the professional translator and the student of medical translation
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STIMA DEI PROFILI DI VELOCITA’ DEI FLUSSI IPERCONCENTRATI: analisi di sensitività sui parametri dell’equazione di Bagnold
Full text linkNel presente lavoro l'attenzione è focalizzata sulla dinamica di propagazione delle colate detritiche, fenomeni naturali di elevata pericolosità e forza distruttiva.
Com’è noto, una colata detritica si verifica quando il materiale solido (sedimenti e materiale sciolto) di versanti caratterizzati da elevate pendenze viene destabilizzato dal deflusso di ingente volume d’acqua. Durante la propagazione della miscela acqua-sedimento, elementi anche di elevata dimensione (massi, alberi,..) possono essere mobilitati aumentando la forza distruttiva della colata con conseguenti possibili ingenti danni a edifici e infrastrutture, perdita di vite umane e ostruzioni (parziali o totali) dei corsi d’acqua interessati
Experimental Analysis of Velocity Distribution in a Coarse-Grained Debris Flow: A Modified Bagnold’s Equation
Full text linkToday, Bagnold’s theory is still applied to gravity-driven flows under the assumption of
uniform sediment concentration. This study presents findings of flume experiments conducted to
investigate the velocity and concentration distributions within the debris body by using high-resolution
images. The analysis has shown that the concentration and mobility of grains vary along the depth.
A linear law to interpret the grains concentration distribution, starting from the knowledge of the
packing concentration and of the surface concentration, Cs, has been identified. By considering such
a law, modified expressions of the Bagnold’s number and the velocity in stony-type debris flows are
also presented. By using these expressions, three regimes of motion have been identified along the
depth, and the velocity profile within the debris body is determined as a function of the parameter
Cs. It has been verified that the velocity profiles estimated by using the modified equation compare
well (mean square error less than 0.1) with the literature’s measured profiles when Cs is correctly
measured or estimated. Results of cutting tests, conducted for a sample of the used material, have
also allowed us to verify that Cs could be determined as a function of the static friction angle of
the material
Estimation of velocity profile in a hyper-concentrated flow: a critical analysis of Bagnold equation
No full textDebris flow velocity is an important factor which influences the impact forces and runup. Due to the complexity of the phenomenon, it is difficult to define predictive methodologies. The present work reports some results of an experimental run conducted in order to investigate the velocity and sediment concentration distributions. A modified Bagnold’s approach to calculate the vertical distribution of flow velocity is presented
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
Cervical cerclage in twin pregnancies
Full text linkPurpose To evaluate the outcomes of cervical cerclage
(CC) in twin pregnancies.
Methods Retrospective analysis of twin pregnancies
undergoing CC between January 2001 and December 2009
at our Institution. CC was offered in case of a cervical
length measurement B20 mm (ultrasound-indicated CC) or
in case of cervical dilatation with membranes at or beyond
the external cervical os (physical examination-indicated
CC). Cervicovaginal and rectal swabs were obtained preoperatively.
Perioperative antibiotics and tocolysis were
administered.
Results There were 28 cases of ultrasound-indicated and
14 of physical examination-indicated CC. Positive swab
cultures were observed in 21 % of cases. The incidence of
preterm delivery\34 weeks was 32 % [95 % confidence
interval (CI) 16–52 %] and 50 % (95 % CI 23–77 %) in
the ultrasound-indicated and physical examination-indicated
CC group, respectively. The incidence of premature
rupture of membranes \34 weeks was 21 % (95 % CI
8–41 %) and 29 % (95 % CI 8–58 %) in the ultrasoundindicated
and physical examination-indicated CC group,
respectively. Perinatal survival was 96 % (95 % CI
88–100 %) in the ultrasound-indicated CC group, and
86 % (95 % CI 67–96 %) in the physical examinationindicated
CC group.Conclusions We showed a high-risk of preterm delivery
in both groups, but with a high overall perinatal survival.
Our data stress the importance of re-evaluating the efficacy
of CC in twin pregnancies by properly designed clinical
trials, particularly if it is physical examination indicated
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
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