1,721,461 research outputs found
Epicuri De natura XXV (PHerc. 454), in: A. Corti, PHerc. 454 (Epicuro, Sulla natura, XXV): edizione, traduzione, commento
No full textPHerc. 454 fu assegnato per la prima volta al Peri physeos di Epicuro da Wilhelm Crönert nel 1901. L'attribuzione di Crönert era basata principalmente, sebbene non esclusivamente, su considerazioni di carattere paleografico. Lo studioso, infatti, riconobbe all'interno della Biblioteca ercolanese le mani di cinque scribi, ai quali ascrisse un numero cospicuo di rotoli contenenti l'opera maggiore di Epicuro. PHerc. 454 fu vergato da uno di questi scribi e perciò «[d]ass hier Epikur vorliegt, das lässt sich wohl nicht bezweifeln». Una ricerca da me condotta nell'ambito del Progetto ERC Starting Grant 241184-PHerc ha confermato tale attribuzione e ha permesso di assegnare, più precisamente, PHerc. 454 al XXV libro del Peri physeos
Birational geometry of terminal quartic 3-folds, I
No full textIn this paper, we study the birational geometry of certain examples of mildly singular quartic 3-folds. A quartic 3-fold is an example of a Fano variety, that is, a variety with ample anticanonical sheaf \O_X(-K_X). From the point of view of birational geometry they basically fall within two classes: either is ``close to being rational'', and then it has very many biregularly distinct birational models as a Fano 3-fold, or, at the other extreme, has a unique model and it is often even true that every birational selfmap of is biregular. In this paper we construct examples of singular quartic 3-folds with exactly two birational models as Fano 3-folds
A Simple Method Suitable to Test the Ultimate Biodegradability of Environmentally Degradable Polymers
No full textBiomass integrated gasification combined cycle with reduced CO2 emissions: Performnce analysis and life cycle assessment (LCA)
No full textPerformance analysis and life cycle assessment (LCA) of an integrated gasification combined cycle
(IGCC) fed with biomass with upstream CO2 chemical absorption has been carried out. The main working
conditions have been determined by mean of partial exergetic analysis. A sensitivity analysis with
respect to the CO2 absorbing solution composition has also been carried out. The reachable efficiency
ranges between 35% and 36%, depending on gas turbine technology level. In comparison with efficiency
values previously found for an IGCC fed with coal with upstream CO2 chemical absorption (38–39%),
the configuration studied seems to be attractive because of the possibility of operating with a simplified
scheme (without H2S removal process) and at atmospheric pressure and for the possibility of using biomass
in a more efficient way with respect to conventional combustion systems. Due to the lower
efficiency, the specific CO2 emission results higher (170 kg/MW h) with respect to the cycle fed with coal
and CO2 removal (130 kg/MW h). Moreover, the CO2 balance has been determined with respect to the
entire life cycle of the plant, including the construction, operation, dismantling and the biomass growing
phases.
# 2003 Elsevier Ltd. All rights reserved
Parità di trattamento tra uomini e donne e partecipazione politica nel diritto comunitario
No full textDopo aver illustrato il quadro normativo di riferimento, l’autore discute principalmente: 1) l’evoluzione della base giuridica in materia di parità di trattamento tra uomini e donne nel diritto comunitario, 2) l’evoluzione corrispondente della competenza della Comunità in materia, 3) l’evoluzione più generale della parità di trattamento da obiettivo generale di intervento della Comunità a principio fondamentale dell’ordinamento comunitario, 4) la giurisprudenza della Corte di giustizia in materia di misure positive ed il problema di riconciliare simili interventi con il principio più generale di non discriminazione.After having illustrated the normative framework, the author discusses mainly: 1) the evolution of the legal basis in the field of equal treatment between men and women under Community law, 2) the corresponding evolution of the Community's competence in the field, 3) the more general evolution of equal treatment from general objective of Community’s action to fundamental principle of Community law, 4) the case law of the ECJ on the positive measures and the problem of reconciling such interventions with the more general principle of non-discrimination
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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