4,473 research outputs found
Antonio Mancini e Vincenzo Gemito
No full textSchede di catalogo per la mostra Antonio Mancini e Vincenzo Gemito. Schede tecniche inerenti sia l'attività pittorica di Antonio Mancini sia quella scultorea di Vincenzo Gemito
Giulio Mancini e la nascita della Connoisseurship
No full textIl ruolo di Giulio Mancini come padre della connoisseurship è stato recentemente messo in discussione sulla base del fatto che Mancini, sebbene frequentasse il mercato artistico romano di primi Seicento, non provò mai a discutere le attribuzioni dei dipinti contemporanei. Generalmente, infatti, la nascita della moderna connoisseurship, con figure quali i fratelli Richardson, è stata collegata al crescere del fenomeno del mercato artistico nel Settecento, e anche i principali precursori del Seicento, come Marco Boschini, agivano pure in veste di mercanti: tutti questi connoissuers si confrontavano col problema delle attribuzioni dei dipinti dei secoli precedenti. Questo paper esamina le radici della connoisseurship nel lavoro topografico di Mancini, autore della prima guida artistica di Roma. Mancini, studiando gli affreschi del primo Rinascimento di Roma (Ripanda, Pinturicchio, Peruzzi) mise in discussione le biografie di Vasari e suggerì nuove attribuzioni per quelle opere dei secoli precedenti con un approccio moderno che chiaramente anticipa il lavoro dei più tardi connoisseurs.The role of Giulio Mancini as the father of connoisseurship has been recently questioned on the ground that Mancini never aimed to discuss the attributions of contemporary works of art. Generally the birth of modern connoisseurship, with figures as the Richardson brothers, has been linked to the growing art market of the Eighteenth century, and the most important Seventeenth century forerunners, as Marco Boschini, acted as dealers as well: all these connoisseurs deal with the attributions of paintings of the previous centuries. This paper explores the roots of connoisseurship in the topography work of Mancini, author of the first modern artistic guide of Rome. Mancini, studying the early Renaissance frescoes in Rome (Jacopo Ripanda, Pastura, Pinturicchio, Baldassarre Peruzzi) discussed Vasari's biographies and suggested new attributions with a modern approach which clearly anticipates the method of later connoisseurs
Optimal control of entanglement via quantum feedback
No full textIt has recently been shown that finding the optimal measurement on the environment for stationary Linear Quadratic Gaussian control problems is a semi-definite program. We apply this technique to the control of the EPR-correlations between two bosonic modes interacting via a parametric Hamiltonian at steady state. The optimal measurement turns out to be nonlocal homodyne measurement -- the outputs of the two modes must be combined before measurement. We also find the optimal local measurement and control technique. This gives the same degree of entanglement but a higher degree of purity than the local technique previously considered [S. Mancini, Phys. Rev. A {/bf 73}, 010304(R) (2006)].Full Tex
International Journal of Quantum Information, Special Issue on Foundations of Quantum Information
No full textQuantum mechanics and Information theory are among the most important scientific discoveries of the last century. After developing separately these two areas recently became intertwined because it has been realized that information has a physical nature. Hence, the birth of Quantum Information Science. It has the potential to cause revolutionary advances in the fields of science and engineering. However, aside from the technological impact, Quantum Information has deep conceptual implications, and it has an intrinsically interdisciplinary nature.
A lot of conferences have been organized in the last decade on Quantum Information, but no one has been explicitly devoted to the fundamental aspects and has been addressed to emphasize the interdisciplinary character. Starting from these considerations I realized the idea of a meeting that would gave the opportunity to people coming from different fields, like, informatics, mathematics, philosophy and physics, to discuss about foundations and interpretations of Quantum Information. The University of Camerino (Italy), always paying attention to the cutting-edge research fields, supported this challenging idea.
Thus, an international meeting on Quantum Information Science, “Foundations of Quantum Information”, was held in Camerino, Italy, during the period April, 16–19, 2004. The aim, probably reached, was to stimulate reflections about the concepts of this new science and to produce interactions across traditional boundaries.
This special issue collects the contributions given at the meeting and concerning topics like: quantum logic, non-locality, incompleteness, realism, information and entropy, quantum de-coherence, quantum algorithms, quantum cryptography, quantum complexity, quantum communication, quantum games. It witnesses a sort of “transverse activity” with respect to the natural flow of the specialistic studies aimed to produce a significant transfer of know-how from a branch to another. I hope that its content would be useful and stimulating for the readers. The contributions are presented in the alphabetic order with respect to the name of the presenting author. Those of invited speakers are listed first
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