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Corso Monotematico - Imaging e Radiologia Interventistica d’Urgenza - 44 Congresso Nazionale SIRM
No full textMultivariate process incapability index for non-normal data: a case study
No full textWhen several quality characteristics have to be considered in process capability analysis, conventional indices are difficultly applicable. Above all when different processes have to be compared in terms of capability, they rarely univocally express which process can be considered the best one. Moreover, conventional process capability indices (PCIs) separately consider quality characteristics regardless of eventual mutual dependencies existing between them. In order to offset these weaknesses, useful tools are the multivariate capability indices. In this study, based on the non-normal Cpp formulation, the multivariate process incapability index for non-normal data, MCpp(q), is proposed. The non-normal Cpp has been constructed using Clements’ method; however, Burr XII distribution has been used in place of the Pearson distributions family for assessing non-normal percentiles. The bootstrap methodology has been used to draw an interval estimate of the index proposed. A case study on the comparison between two different cold extrusion processes has been presented to demonstrate how the proposed index can be applied to real data
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
Emergency radiology today between philosophy of science and the reality of "emergency care"
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