1,720,996 research outputs found
Sustainable airports and NZEB: The real case of Rome International Airport
No full textThe paper shows and analyzes the energy efficiency solutions adopted to renew the terminal T3 of Rome International Airport at Fiumicino 'Leonardo da Vinci'. Such solutions put together the top-of-the-market energy technologies with the most innovative architectures and materials to renovate an old terminal transforming it into a Nearly Zero Energy Building (NZEB). For the new forepart of the terminal and for the new boarding area 'F', now under construction, a dynamic energy simulation has been performed using a software provided by the US Department of Energy (DOE) named Energy Plus, and its interface Design Builder. The tool makes possible to calculate the energy consumption of the two buildings and to assess the design in order to maximize energy efficiency and sustainability. The main results of the energy analysis are reported after detailing the case study
Convezione naturale in una cavità con sorgenti di calore concentrate: risultati sperimentali ed analisi comparativa di metodi di simulazione
No full textCombining echocardiographic and anatomic variables to predict outcomes of mitral valve repair with the NeoChord procedure
No full textBackground: Trans-apical, echo-guided NeoChord mitral valve (MV) repair is an innovative procedure to
treat degenerative mitral regurgitation (MR) without concomitant annuloplasty. Recently, leaflet-to-annulus
index (LAI) has been identified as a positive prognostic predictor of outcomes at 1-year follow up. The aim
of this study is to develop a pre-operative predictor tool to assess probability of success with NeoChord
procedure utilizing multi-factor echocardiographic and anatomic variables.
Methods: We included ninety-one consecutive patients with prolapse/flail of the posterior mitral leaflet,
who subsequently underwent NeoChord MV repair between November 2013 and October 2016. All
patients completed post-operative echocardiographic follow-up assessments for up to 2 years. A random
forest regression algorithm identified and ranked the most relevant predictors of moderate-severe MR. A
multi-variable Cox regression model was performed at follow-up intervals, to assess variables associated with
residual MR that was classified as mild or less. Bootstrapping re-samples were used to validate an estimated
survival model. Predictive accuracy was assessed using a discrimination index that corrected for overoptimism.
Results: We developed a nomogram which used the results of a multi-variable model to predict the
probability of mild or less residual MR at follow-up periods (discharge, 1, 3, 6 months, 1 and 2 years).
Identified predictors included LAI, systolic pulmonary artery pressure, indexed left ventricle end-systolic
volume (iLVESV), prolapse/flail width (FW), systolic antero-posterior (AP) annulus diameter, systolic laterolateral (LL) annulus diameter and presence of calcification.
Conclusions: A NeoChord MV repair prediction tool would be helpful in clinical decision-making and
in the identification of patients who may benefit from a ringless mitral valve repair using the NeoChord
procedure
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
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
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