1,721,296 research outputs found
Cultural heritage e posizionamento competitivo del made in Italy nei mercati internazionali
No full textOn the conservation laws of PDE's.
No full textThe general method of obtaining conservation laws for (non-linear) partial differential equations (PDE's) introduced by A. Pr\'astaro and another one by A.
M. Vinogradov, are considered and the general covariance of such methods is studied. In particular, it is shown that Vinogradov's method fails to be fully covariant in the non-linear case. The relations between the number of conservation laws for PDEs and the Atiyah-Singer index theorem are studied. A criterion for recognize the wholly cohomological character of a PDE is given and the link between spectral sequences and wholly cohomlogical equations is found. Some examples of interesting PDEs which arise in physics are also considered
Geothermal infrastructure for an historic village in Tuscany: A sustainable retrofit solution - Un’infrastruttura geotermica per un borgo storico in Toscana: riflessioni sulla sostenibilità delle soluzioni di riqualificazione energetica
Full text linkIl comune di Montieri ha recentemente costruito una rete di teleriscaldamento alimentata a vapore geotermico. L’aspetto innovativo risiede nell’uso del vapore geotermico di scarto dalla produzione di elettricità, per fornire riscaldamento e acqua calda sanitaria per 425 utenze del centro storico. Con il progetto Geothermal Community (Concerto, FP7) sono stati intrapresi ulteriori obiettivi per l’ambiente costruito: la riduzione del consumo energetico degli edifici e l’aumento della quota delle risorse energetiche rinnovabili utilizzate dalla comunità. L’articolo propone una analisi dei benefici ambientali ed economici delle misure di efficienza energetica pianificate dal progetto Europeo alla luce dell’installazione della rete di teleriscaldamento. I risultati presentano uno spunto di riflessione interessante per la formulazione dei piani di riduzione delle emissioni delle aree urbane storiche Italiane ed Europee dove sono presenti simili infrastrutture
On the geometric generalization of the Noether theorem.
No full textTask of this paper is to compare some geometric approaches to obtain conservation laws associated to partial differential equations. More precisely we intend to consider the methods developed by A. Pr\'astaro and A. M. Vinogradov. The
differential equations are considered from a geometric point of
view: namely they are submanifolds of jet-derivative spaces on fiber bundles. To the symmetries of these submanifolds are associated conservation laws that are not necessarily of Noetherian type
Integration of sustainability requirements in architectural design - Integrazione dei requisiti di sostenibilità ambientale nel progetto di architettura
Full text linkThe paper explores the integration of technological and environmental requirements in the architectural design, as these are recently defined by the European and national policy pieces. It analyses how environmental sustainability objectives, requirements and reference indicators are addressed in the design process, from the architectural concept design to technological and construction choices in detailed design. Hence, the paper compares the European framework Level(s) with the Criteri Ambientali Minimi per l’edilizia (the national GPP rules for the building sector), to highlight similarities and differences and to understand if designers are provided with a comprehensive set of instructions (norms, standards, databases and tools) to include this information in the project
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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