Search results for " Critic"
showing 10 items of 2479 documents
On multi-scale percolation behaviour of the effective conductivity for the lattice model
2015
Macroscopic properties of heterogeneous media are frequently modelled by regular lattice models, which are based on a relatively small basic cluster of lattice sites. Here, we extend one of such models to any cluster's size kxk. We also explore its modified form. The focus is on the percolation behaviour of the effective conductivity of random two- and three-phase systems. We consider only the influence of geometrical features of local configurations at different length scales k. At scales accessible numerically, we find that an increase in the size of the basic cluster leads to characteristic displacements of the percolation threshold. We argue that the behaviour is typical of materials, w…
On multi-scale percolation behaviour of the effective conductivity for the lattice model with interacting particles
2015
Recently, the effective medium approach using 2x2 basic cluster of model lattice sites to predict the conductivity of interacting droplets has been presented by Hattori et al. To make a step aside from pure applications, we have studied earlier a multi-scale percolation, employing any kxk basic cluster for non-interacting particles. Here, with interactions included, we examine in what way they alter the percolation threshold for any cluster case. We found that at a fixed length scale k the interaction reduces the range of shifts of the percolation threshold. To determine the critical concentrations, the simplified model is used. It diminishes the number of local conductivities into two main…
On quantumness in multi-parameter quantum estimation
2019
In this article we derive a measure of quantumness in quantum multi-parameter estimation problems. We can show that the ratio between the mean Uhlmann Curvature and the Fisher Information provides a figure of merit which estimates the amount of incompatibility arising from the quantum nature of the underlying physical system. This ratio accounts for the discrepancy between the attainable precision in the simultaneous estimation of multiple parameters and the precision predicted by the Cram\'er-Rao bound. As a testbed for this concept, we consider a quantum many-body system in thermal equilibrium, and explore the quantum compatibility of the model across its phase diagram.
La rivista “Sicilia” dell’editore S.F. Flaccovio (1953-1982)
2012
Il contributo analizza il periodico "Sicilia", pubblicato dagli anni '50 dall'editore palermitano Flaccovio, interessante rassegna di temi di arte, critica, musica.
Un caso di sternismo: le "Avventure e osservazioni" di Filippo Pananti
1997
Il saggio studia l'influsso di Sterne sulle "Avventure e osservazioni" di Pananti e su altre relazioni di viaggio di primo Ottocento. The essay deals about Sterne's influence on Pananti's and othes authors' travel literature
Pictures of Nature. Mineral Imagery in Modern French Aesthetics
2016
Thus, from antiquity to the twentieth century, figured stones have changed so many times their ontological status. They were considered collectibles, emblems of prodigiousness or of curiosity; they have been interpreted as works of art attributed to nature or to a supreme creator, in competition with the works of the artists; they were finally gazed at as case or guardians of a secret revealed in the underground and overt (at the meantime) „stone writing”. This study is devoted to the forms of mineral imagery. It is interested in enlightening the contacts between visual arts and arts of speech, between sensitive image and immaterial images, and the difficult journeys, and the indispensable …
Framing and Being Framed. Arte ed Etnografia nel XX secolo
2012
Ancora su Vincenzo Ragusa. Nuove acquisizioni documentarie
2019
Il saggio propone nuovi documenti dell'attività dello scultore Vincenzo Ragusa The essay proposes new documents on the activity of the sculptor Vincenzo Ragusa.
Su “alcune idee” del pittore napoletano Filippo Marsigli per un istituto di belle arti
2013
Sulla base di un'inedita documentazione d'archivio, l'articolo indaga il progetto datato 1853 per la creazione di un istituto di belle arti a Palermo da parte del pittore napoletano Filippo Marsigli.