1,721,321 research outputs found
SULLE ALI DI PEGASO. DI UNA GROTTA E ALTRI DOCUMENTI D'ARCHIVIO PER PALAZZO GRIMALDI DELLA MERIDIANA
No full textTwo-dimensional sensitivity analysis of MIPAS observations
No full textIn this paper we propose a new approach to operate two-dimensional sensitivity studies on the observations of MIPAS, an experiment on board the ENVISAT satellite. The proposed analysis system is intended to evaluate the amount and the spatial distribution of the information that is carried by MIPAS observations with respect to the target atmospheric parameters. The new approach enables the definition and assessment of the target-dependent atmospheric sampling of the measurements. The amount of information is evaluated by merging MIPAS measurements, relative to different limb-scans, in a two-dimensional analysis that models the sensitivity of the spectral signals combined with the geometrical redundancy introduced by different observation geometries. The spatial distribution of the information that is obtained with our analysis highlights the advantage of using a two-dimensional retrieval system. Furthermore, within the two-dimensional context, this analysis provides crucial indications for the definition of the optimal retrieval grid and, therefore, for the best exploitation of existing measurements. The proposed analysis is also suited for the design of optimized observation strategies. The sensitivity analysis, applied in this paper to MIPAS observations, can be extended to other orbiting limb sounders that, like MIPAS, continuously measure the atmospheric emission along the orbit track
Al di là della parete. Paesaggio ed elementi di natura nell'illusione dell'affresco a Genova
No full textIl contributo, scritto in collaborazione con Lauro Magnani, prende in esame una particolare problematica della decorazione a fresco in ambito genovese e ligure che, tra Cinque e Seicento, rende la parete un diaframma facilmente sfondabile attraverso l’artificio pittorico per stabilire allusivamente un rapporto con lo spazio esterno, schermo sul quale proiettare un’immagine della natura non necessariamente mimetica dello spazio circostante, ma, piuttosto, elemento della sua trasformazione in dimensione ideale aperta all’antico, al mito. Nello specifico, si propone una panoramica che parte dalle esperienze di Gio Battista Castello, detto il Bergamasco, della metà del XVI secolo, ispirate alle istanze delineate tempo prima dal Peruzzi per Agostino Chigi a Roma, per arrivare, nel secolo successivo, agli interventi di Valerio Castello e di Domenico Piola, in collaborazione con i quadraturisti emiliani, da interpretare come reazione a talune forme di cortonismo ‘non compreso’
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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