1,721,758 research outputs found
Spunti di riflessione a margine del formulario della familiae mancipatio
No full textThe A. questions the meaning of the two different variants handed down at the end of the formula of the familiae mancipatio in Gai 2.104 trying to give more interpretative solutions for the meaning of the parenthetic proposition ‘et ut quidam adiciunt’
La tutela della salute a fondamento della comunità. Il rapporto tra ospedale e territorio
No full text
Bandwidth enhancement for parametric amplifiers operated in chirped multi-beam mode
No full textIn this paper we discuss the bandwidth enhancement that can be achieved in multi-joule optical parametric chirped pulse amplification (OPCPA) systems exploiting the tunability of parametric amplification. In particular, we consider a pair of single pass amplifiers based on potassium-dideuterium-phosphate (DKDP), pumped by the second harmonic of Nd:glass and tuned to amplify adjacent regions of the signal spectrum. We demonstrate that a bandwidth enhancement upto 50% is possible in two configurations; in the first case, one of the two amplifiers is operated near its non-collinear broadband limit; to allow for effective recombination and recompression of the outgoing signals this configuration requires filtering and phase manipulation of the spectral tail of the amplified pulses. In the second case, effective recombination can be achieved simply by spectral filtering: in this configuration, the optimization of the parameters of the amplifiers (pulse, crystal orientation, and crystal length) does not follow the recipes of non-collinear OPCPA. (c) 2008 Elsevier B.V. All rights reserved
Teoria
No full textLa pubblicazione di questo volume segue a distanza di cinque anni l'uscita della raccolta di scritti in onore di Ludovico Quaroni intitolata "Modernocontemporaneo". Allora il titolo costituiva non più che un'ipotesi di lavoro che si è rivelata ricca di potenzialità e di possibili linee di ricerca. L'anno successivo decidemmo di invitare alcuni studiosi amici e colleghi, anche di altre discipline, a confrontarsi con le nostre tesi, ne uscì un volumetto di "scritti ulteriori" denso di riflessioni e di critiche. Ora abbiamo avvertito la necessità di riprendere l'argomento e tentare di portare a sintesi alcune dei temi lanciati e emersi nei volumi precedenti e nel dibattito che hanno suscitato. Più volte ci siamo trovati a spiegare le motivazioni dell'uso di questa parola "modernocontemporaneo". Più volte, declinandola in maniera soggettiva, abbiamo posto l'accento sui valori della continuità che tengono insieme le espressioni contemporanee più alte e sostanziate delle arti visive e nello specifico dell'architettura, all'esperienza delle avanguardie storiche, del movimento moderno, e della modernità tutta. L'obiettivo è inquadrare e valutare la produzione attuale di maggiore riconoscibilità e presenza sulla scena internazionale, che oggi possiamo ritenere storicizzata, nel rapporto con le proprie radici e con l'individuazione di possibili linee di ricerca future.
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
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