1,721,797 research outputs found
Linear-scaling soft-core scheme for alchemical free energy calculations.
Get PDFAlchemical free energy calculations involving the removal or insertion of atoms into condensed phase systems generally make use of soft-core scaling of nonbonded interactions, designed to circumvent numerical instabilities that arise from weakly interacting "hard" atoms in close proximity. Current methods model soft-core atoms by introducing a nonlinear dependence between the shape of the interaction potential and the strength of the interaction. In this article, we propose a soft-core method that avoids introducing such a nonlinear dependence, through the application of a smooth flattening of the potential energy only in a region that is energetically accessible under normal conditions. We discuss the benefits that this entails and explore a selection of applications, including enhanced methods for the estimation of free energy differences and for the automated optimization of the placement of intermediate states in multistage alchemical calculations
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Sviluppo di nuove metodiche per la diagnosi di Laboratorio delle malattie infettive del cavo orale
No full textVariations on the Author
Get PDF“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
FALESCE QUEI IN SARDINIA SUNT
No full textThe aim of this paper is the analysis of epigraphical and archaeological evidence of the spreading of Italic patterns in Sardinia during late republican age
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe 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
Un anonimo funzionario equestre da Tarrhi: proposte per la ricostruzione di un testo
No full textUn piccolo frammento di marmo (AE, 1971,127), rinvenuto a Tarrhi, è attribuibile a un’iscrizione forse onoraria dedicata dagli abitanti della colonia a un personaggio di ordine equestre, del quale si riporta la carriera in ordine discendente. Suggestivo ma difficilmente dimostrabile il riferimento del testo a L. Valerius Datus, prefetto della flotta del Miseno e poi prefetto dei vigili durante il principato di CaracallaA small marble fragment (AE, 1971,127), found in Tarrhi is perhaps to be referred to a honorary inscription dedicated by the inhabitants of the colony to a member of the equestrian order, whose career is given in a descending order. Suggestive but difficult to prove that the text is attributable to L. Valerius Datus, praefectus classis Misenensis and then praefectus vigilum during the reign of the emperor Caracalla
Provincia Sardinia et Corsica
No full textA. Ibba ha firmato i § 3, 5-6, (pp. 314-316), dove ha tracciato una sintetica panoramica sulla diffusione delle tribù romane in Sardegna e sui particolari casi di Turris Libisonis e Sulci: a Turris la tribù Collina si giustifica con una fondazione voluta da Cesare, a Sulci la varietà delle tribù attestate si spiega con l'essere il centro un probabile municipio latin
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