1,721,441 research outputs found
Real-time Detectors for Muography
No full textDifferent types of detectors can be used for muon radiography. Common to all detectors is the ability to track the direction of the incoming muon. Emulsion detectors have very high resolution and no need for electric power, but cannot give real-time information and cannot be used in all environmental conditions. Detectors with electronic readout have generally lower resolution but are more flexible, can be operated in real-time, and can also measure the time of the muon hitting the detector with resolutions as low as few hundred ps in specific setups. Special geometries and assemblies have been used for specific applications, where the size, weight, or shape of the detector are heavily constrained
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
La pandemia che ha sconvolto il mondo: dati e tendenze internazionali nella percezione pubblica
No full textL’Annuario Scienza Tecnologia e Società, realizzato da Observa Science in Society, propone, in forma sintetica e accessibile, una raccolta aggiornata dei dati e delle informazioni provenienti dalle più accreditate fonti nazionali e internazionali, utili per comprendere lo stato e le trasformazioni della ricerca e dell’innovazione nella nostra società. Giunto alla diciassettesima edizione, il volume si caratterizza quest’anno per l’attenzione dedicata al tema delle tecnologie digitali e delle percezioni della pandemia da Covid-19.
Il secondo capitolo, di Valeria Occelli e Barbara Saracino, è dedicato al confronto dei dati raccolti dall’Osservatorio sulle percezioni della pandemia nei primi mesi dell’emergenza con quelli di ricerche svolte con lo stesso metodo in Argentina, Canada, Corea del Sud, Finlandia, Germania, Malesia, Portogallo, Regno Unito, Romania, Spagna, Sudafrica, Svezia e Stati Uniti
Scienza e società all'epoca della pandemia. Scienza, tecnologia e opinione pubblica in Italia nel 2020
No full textL’Annuario Scienza Tecnologia e Società, realizzato da Observa Science in Society, propone, in forma sintetica e accessibile, una raccolta aggiornata dei dati e delle informazioni provenienti dalle più accreditate fonti nazionali e internazionali, utili per comprendere lo stato e le trasformazioni della ricerca e dell’innovazione nella nostra società. Giunto alla diciassettesima edizione, il volume si caratterizza quest’anno per l’attenzione dedicata al tema delle tecnologie digitali e delle percezioni della pandemia da Covid-19.
Il primo capitolo, di Massimiano Bucchi e Barbara Saracino, traccia le più recenti tendenze nei rapporti tra scienza, tecnologia e opinione pubblica in Italia, rilevate attraverso l’Osservatorio Scienza Tecnologia e Società. Presenta i dati raccolti a marzo 2020 su esposizione alla scienza e alla tecnologia, credibilità attribuita alle fonti, alfabetismo scientifico e orientamenti verso le tecnologie digitali, e i dati raccolti a marzo, aprile e ottobre 2020 sugli atteggiamenti nei confronti del nuovo Coronavirus
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
Absolute pKa determination for carboxylic acids using density functional theory and polarizable continuum model
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