1,721,425 research outputs found
Introduzione
No full textRagione” e “razionalità” sono oggi nozioni problematiche: considerate a lungo, nella storia del pensiero occidentale, come tratti distintivi dell’uomo e della civiltà euro-americana, da un certo punto in poi sono state messe in discussione e lacerate dalla crisi e dal malessere di quest’ultima. Alla luce delle controversie più recenti e delle riflessioni sul tema sviluppate nella prima metà del Novecento, questo libro si propone di riaprire la querelle sulla ratio con l’intento di mettere in luce – attraverso una serie di “casi di studio” – la grana sottile dei molteplici significati e usi della nozione di ragione, ma anche di interrogarsi sulle differenti “epoche” della ragione provando a ricostruirne la “storia”. I saggi contenuti in questo volume, dunque, contestualizzano e analizzano le accezioni e le ambiguità del termine ratio e dei suoi derivati nel quadro delle molteplici discussioni che ne hanno ritmato la storia a partire dalla prima modernità, quando il concetto assunse nuove configurazioni rispetto agli usi attestati nel pensiero antico e medioevale, sino al dibattito contemporaneo
Numerical Modeling of Resistance Welding Process in Joining ofThermoplastic Composite Materials Using Comsol Multiphysics
No full textThis paper deals of a technology
involved in the joining of thermoplastic
composites, the resistance welding technology.
This process take advantage in the repeatable
melting process for the thermoplastic resins. The
process was numerically modelled to study the
effect of the two main process parameters, the
electric power density applied to the heating
elements and the exposure time at the electric
current
Numerical Time-Dependent Simulation and Comparison Results between a Traditional and More Steps Pultrusion Process Using Comsol Script Environment
No full textGoing 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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