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Mente estesa e valutazione
No full textLa tecnologia è la soluzione per costruire una scuola migliore? Come cambiano le pratiche educative al variare di media e linguaggi? Davvero internet ci rende meno intelligenti? Sono alcune delle domande che animano le riflessioni contenute nei capitoli del volume, nato dall'esperienza pratica di 9 docenti coinvolti in attività didattiche che ibridano metodologie tradizionali ed e-learning. Filosofia, informatica, pedagogia, sociologia e giornalismo sono le sfere in cui si sono mossi gli autori come formatori. Natural born pedagogy integra le competenze di ciascuno, con l'obiettivo di offrire a docenti e studenti spunti per una didattica al passo coi tempi. Se la pedagogia è un'attitudine naturale dell'essere umano, la tecnologia è solo un altro mezzo da mettere al suo servizio, con modi da definire e sperimentare, senza demonizzarla né cadere vittime di mitologie o visioni entusiastiche
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
A portable acquisition system based on USB standard for the Medipix2 X-Ray detector
No full textWe describe a portable readout system for an X-Ray hybrid detector based on the Medipix2 pixel readout chip. The Medipix2 chip (256 x 256 square pixels with 55 mu m pitch) is bump-bonded with a pixellated Silicon sensor 300-micron thick. The readout system consists of a simple small size electronic card based on a single powerful microcontroller and can be connected to a PC through the widespread Universal Serial Bus (USB) interface. The reduced size of the final card (3.8 cm x 4.8 cm) makes it suitable for special applications like dental radiology
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
Design and test of data acquisition systems for the Medipix2 chip based on PC standard interfaces
No full textWe describe two readout systems for hybrid detectors using the Medipix2 single photon counting chip, developed within the Medipix Collaboration. The Medipix2 chip (256 x 256 pixels, 55 mu m pitch) has an active area of about 2 cm(2) and is bump-bonded to a pixel semiconductor array of silicon or other semiconductor material. The readout systems we are developing are based on two widespread standard PC interfaces: parallel port and USB (Universal Serial Bus) version 1.1. The parallel port is the simplest PC interface even if slow and the USB is a serial bus interface present nowadays on all PCs and offering good performances. (c) 2005 Elsevier B.V. All rights reserved
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