1,720,964 research outputs found
L'esperimento più bello della fisica
No full textIl 28 novembre 2009 si è svolto un evento di presentazione del sito web (http://l-esperimento-piu-bello-della-fisica.bo.imm.cnr.it/) dedicato all'esperimento di interferenza del singolo elettrone scelto, nel 2002, da un sondaggio di "Physics World" come l’esperimento più bello.
L'evento è stato organizzato dal Dipartimento di Fisica dell'Università di Bologna, dall'Istituto CNR-IMM di Bologna e da Unibo Cultura, nell’ambito delle attività di Scienzagiovane (http://www.scienzagiovane.unibo.it/esperimento-piu-bello.html), che ne ha anche curato lo streaming.
Sono intervenuti: Silvio Bergia, Cristian Degli Esposti, Olivia Levrini, Giorgio Lulli, Gianni Zanarini
Ospiti: Gian Franco Missiroli, Dario Nobili, Giulio Pozzi
Letture sceniche: Luciano Manzalini
Modera: Lorenzo Monaco
Comitato organizzatore: Olivia Levrini, Giorgio Lulli, Barbara Pecori, Barbara Poli
L'evento ha visto la partecipazione di oltre 400 persone. Di queste quasi tutti erano studenti di scuole secondarie superiori provenienti dal diverse province della Regione
Fisica della Materia
No full textLo studio e lo sviluppo di nuovi materiali ha sempre prodotto
sostanziali cambiamenti nella vita dell’uomo. Le varie ere della
civilizzazione, le età della pietra, del bronzo, del ferro, sono scandite
dalla capacità dell’uomo di modificare le proprietà di una
particolare classe di materiali per poterli utilizzare con maggior
vantaggio. Come potremmo definire l’era attuale? Certamente i
materiali che la caratterizzano sono molteplici, ma se pensiamo
alle tecnologie che hanno avuto lo sviluppo più rapido negli ultimi
decenni, vale a dire quelle dell’informazione e comunicazione,
potremmo definire la nostra epoca come era della microelettronica
basata sul Silicio. Già oggi si stanno tuttavia utilizzando
altri materiali, come ad esempio il Carburo di Silicio o il Silicio-
Germanio, che, in virtù delle loro proprietà particolari, sono in
grado di svolgere alcune funzioni per le quali il Silicio è inadatto
o meno efficiente. E nel futuro ci aspettano sicuramente altri e più
rivoluzionari sviluppi
Proceedings of the 21st international conference on atomic collisions in solids genova, italy, 4-9 July 2004
No full textThe Manifesto for teaching and learning science in a creative way
No full textManifesto for teaching and learning science in a creative way is one of the final outcomes of the STENCIL project (http://www.stencil-science.eu/). The Manifesto presents the five recommendations derived from the analysis of the outcomes of the STENCIL project and results in a short and visual way. A more extended version of the outcomes are reported in the STENCIL Guidelines.
The Manifesto is translated in 9 languages
Guidelines for teaching and learning science in creative ways
No full textThe Guidelines for teaching and learning science in a creative way are the final outcome of the EU STENCIL Project (http://www.stencil-science.eu/index.php). The Guidelines wants to offer to educational authorities and policy makers from all over Europe an opportunity for thinking about innovation on science education, taking into account the everyday teachers experiences and the inputs from science education research in Europe.
The Guidelines include the 3 parts:
1. Science education in the European context that outlines a picture of science education issues at EU level and from an historical point of view;
2. Analysis of the STENCIL catalogue and stakeholders questionnaires, which presents a discussion of the data collected and analyzed within STENCIL, and identifies critical problems and gaps.
3. Conclusion and Recommendations that presents the results of the reflection on the data analyzed and gives recommendations to policy makers for future actions and future projects
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
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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