1,720,996 research outputs found
Disorders of the autonomic nervous system in mitral prolapse: facts and opinions [Le alterazioni del sistema nervoso autonomico nel prolasso della mitrale: fatti ed opinioni.]
No full textNo abstract availabl
Robust ANalysis Of VAriance: an approach based on the Forward Search
No full textA simple robust method for the detection of atypical observations and the analysis of their effect in the ANOVA framework is presented. It is proposed to use a forward search procedure that orders the observations by their closeness to the hypothesized model. The procedure can be applied following two different strategies: one that adds units maintaining the relative group dimension and the other that adds only one new unit at each step of the search. The assessment of the goodness of the method is carried out through a simulation study. The method is then applied to real data. Results are presented through easy to interpret plots which are powerful in revealing the structure of the data. © 2006 Elsevier B.V. All rights reserved
The effectiveness of university education: a structural equation model
No full textThe evaluation of the effectiveness of higher education is a crucial aspect
of competitiveness of modern economies. In this contribution we investigate the
quality and effectiveness of higher education in Italy using a structural equation
model; in particular, we evaluate the performance of the university system from the
users’ point of view, both immediately following (internal effectiveness), and one
year after (external effectiveness), the completion of the degree. The model allows
the construction of synthetic indexes and hence the ranking of study programs
Robust Random Effects Models: A Diagnostic Approach Based on the Forward Search
No full textThis paper presents a robust procedure for the detection of atypical observations and for the analysis of their effect on model inference in random effects models. Given that the observations can be outlying at different levels of the analysis, we focus on the evaluation of the effect of both first and second level outliers and, in particular, on their effect on the higher level variance which is statistically evaluated with the Likelihood-Ratio Test. A cut-off point separating the outliers from the other observations is identified through a graphical analysis of the information collected at each step of the Forward Search procedure; the Robust Forward LRT is the value of the classical LRT statistic at the cut-off point. © Springer-Verlag Berlin Heidelberg 2013
Echocardiographic study of changes in myocardial contractility induced with 3',5'-cyclic AMP
No full textNo abstract availabl
Assessment of extent of infarcted area [LA VALUTAZIONE DELL'ESTENSIONE DELL'AREA INFARTUATA]
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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
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