1,721,339 research outputs found
SC RF studies in Europe
No full textThe perspective to build large accelerators based on high gradient superconducting cavities posed a number of new problems that have been addressed in the preparation of the TESLA project. In this paper I mainly discuss the European contribution to the TESLA achievements and how they have been at the basis of the great impulse that the field is presently experiencing. Industrial production issues are focussed in terms of large scale production, reviewed quality control criteria and cost reduction
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 Certosa di Pavia. Il grande racconto della facciata
No full textIl volume riccamente illustrato con immagini ad alta definizione presenta la completa mappatura fotografica della facciata della Certosa di Pavia voluta dal CISRIC dell’Università di Pavia. Il prospetto frontale della chiesa, oggetto di studio dei più grandi specialisti, mancava fino ad ora di un rilievo fotografico completo. Il libro pone in piena luce la sequenza del “grande racconto” visivo voluto dai committenti: evidenzia la interrelazione tra apparato scultoreo e impianto strutturale della grande quinta architettonica, che fu elevata nel corso di almeno tre secoli; esplicita alcuni dei tanti nessi che caratterizzarono le scelte artistiche, culturali e politiche dei membri della famiglia ducale visconteo sforzesca e dei personaggi della comunità certosina alla quale il complesso monumentale fu affidato fin dalla sua origine
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
Entanglement, super-selection rules and supersymmetric quantum mechanics
No full textIn this paper we show that the energy eigenstates of supersymmetric quantum mechanics (SUSYQM) with non-definite "fermion" number are entangled states. They are "physical states" of the model provided that observables with odd number of spin variablles are allowed in the theory like it happens in the Jaynes-Cummings model. Those states generalize the so-called "spin-Spring" states of the Jaynes-Cummings model which have played an important role in the study of entanglement
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
POLITICHE DI RICONOSCIMENTO NEI MUSEI DI ETNOGRAFIA E DELLE CULTURE NEL XXI SECOLO
No full textSeguendo un approccio genealogico e alla luce delle teorie sul multiculturalismo, questo lavoro analizza il museo in quanto istituzione pubblica nazionale, fabbrica di identità, strumento dello Stato-nazione e luogo di esercizio delle politiche di riconoscimento. Oggetto di tale ricerca è il museo di etnografia e delle culture che dagli anni ’80 è testimone di numerose critiche e di una crisi di identità, dovuta alla sua eredità coloniale e alla sua missione anacronistica in un contesto postcoloniale e globalizzato. In seguito ai movimenti dei popoli indigeni e allo sviluppo di norme internazionali relative alla diversità culturale e alla restituzione dei beni culturali promosse dalle agenzie delle Nazioni Unite quali l’UNESCO e dalle istituzioni europee, i musei di etnografia sono diventati teatri in cui si negoziano e si costruiscono le identità e in cui si mediano le domande di riconoscimento. Si sono così adottate delle nuove strategie istituzionali per superare il modello etnografico e la chiave di lettura essenziale per interpretare e comprendere questo cambiamento di paradigma è il principio di riconoscimento. Seguendo una prospettiva pluridisciplinare e attraverso casi studio in Europa e negli Stati Uniti, questo lavoro intende costruire un ponte tra la filosofia politica e la museologia. Propone così un’analisi di differenti istituzioni secondo quattro principi di riconoscimento concernenti il caso dei popoli indigeni, il rapporto all’universalismo, la relazione alla storia coloniale e la globalizzazione.Through a genealogical approach and in the context of theories on multiculturalism, this work intends to analyse museums as public institutions, builders of identity, nation-state instruments and venues for the exercise of politics of recognition. The following research focuses on ethnographic and cultural museums, which have subject to criticism since the 1980's due to their colonial legacy and anachronic mission in today's global and post-colonial world. Thanks to indigenous people movements and the development by European institutions and UN agencies such as UNESCO of international norms on cultural diversity and return of cultural property, museums have turned into theatres where indentities are built and claims for recognition are negotiated. As a result, new institutional strategies have been adopted in order to go beyond the ethnographic approach. The principle of recognition is key to understand this paradigm shift. Following a pluridisciplinary approach and through case studies in Europe and in the United States, this work aims at building a bridge between political philosophy and museum studies. It proposes an analysis of various institutions based on four principles of recognition in relation to indigeneous peoples, universalism, colonial history and globalisation.À partir d’une approche généalogique et à la lumière des théories sur le multiculturalisme, ce travail analyse le musée en tant qu’institution publique nationale, fabrique d’identités, instrument de l’État-nation et lieu d’exercice des politiques de reconnaissance. L’objet de cette recherche est le musée d’ethnographie et des cultures qui depuis les années ’80 a été témoin de nombreuses critiques et d’une crise d’identité, du fait notamment de son héritage colonial et de sa mission anachronique dans le contexte du monde postcolonial et globalisé d’aujourd’hui. Suite aux mouvements des peuples autochtones et au développement des normes internationales relatives à la diversité culturelle et au retour des biens culturels promues par différentes agences des Nations Unies comme l’UNESCO ainsi que par les institutions européennes, les musées d’ethnographie sont devenus des théâtres où se négocient et se construisent des identités et où s’arbitrent les demandes de reconnaissance. De nouvelles stratégies institutionnelles ont ainsi été adoptées afin de dépasser le modèle ethnographique. Le principe de reconnaissance est notamment une clé de lecture essentielle pour interpréter et comprendre ce changement de paradigme. En suivant une perspective pluridisciplinaire et à travers des études de cas en Europe et aux États-Unis, ce travail vise à établir une passerelle entre la philosophie politique et la muséologie. Il propose ainsi une analyse de différentes institutions selon quatre principes de reconnaissance concernant le cas des peuples autochtones, le rapport à l’universalisme, la relation à l’histoire coloniale et la globalisation
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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