Search results for " PRIN"
showing 10 items of 1809 documents
Shuttling of Rydberg ions for fast entangling operations
2019
We introduce a scheme to entangle Rydberg ions in a linear ion crystal, using the high electric polarizability of the Rydberg electronic states in combination with mutual Coulomb coupling of ions that establishes common modes of motion. After laser-initialization of ions to a superposition of ground- and Rydberg-state, the entanglement operation is driven purely by applying a voltage pulse that shuttles the ion crystal back and forth. This operation can achieve entanglement on a sub-$\mu$s timescale, more than two orders of magnitude faster than typical gate operations driven by continuous-wave lasers. Our analysis shows that the fidelity achieved with this protocol can exceed $99.9\%$ with…
Acousto-optic cavity coupling in 2D phoxonic crystal with combined convex and concave holes
2021
International audience; A two-dimensional cross-like phoxonic crystal (PxC) model is proposed, which exhibits simultaneously large complete photonic crystal (PtC) and phononic crystal (PnC) bandgaps. The most salient trait of the structure is the wide range of geometrical parameters compatible with large complete bandgaps. After geometrical optimization, photonic and phononic bandgaps with gap-to-midgap ratios of 11.5% and 90.7% are obtained, respectively. These values are close to the best topology-optimized reported values but are obtained with simple shapes compatible with nanoscale fabrication technology. These characteristics make the convex–concave topology a promising candidate for P…
Sign and Rank Covariance Matrices: Statistical Properties and Application to Principal Components Analysis
2002
In this paper, the estimation of covariance matrices based on multivariate sign and rank vectors is discussed. Equivariance and robustness properties of the sign and rank covariance matrices are described. We show their use for the principal components analysis (PCA) problem. Limiting efficiencies of the estimation procedures for PCA are compared.
Principio di specialità e applicabilità della disciplina delle pratiche commerciali scorrette nel settore del credito
2012
Il saggio segue criticamente l'evoluzione della giurisprudenza amministrativa fino alla svolta rappresentata da una serie di pronunce dell'Adunanza Plenaria del Consiglio di Stato, che hanno adottato il principio di specialità per norme quale criterio di delimitazione dell'applicazione tra discipline settoriali e disciplina generale contro le pratiche scorrette.
The impact of criminality on the riskiness of cooperative credit banks in Italy: a macro regional approach
2017
In Italy, Cooperative Credit Banks (CCBs), unlike large banks, despite the economic downturn, have continued to extend credit to customers, but at the cost of a higher incidence of bad credit. This increased credit risk of local banks has been caused by management policy choices, such as preferring to modify the conditions applicable to credit supply and to engage firms in long-term credit relationships rather than initiating credit recovery procedures. The originality of this empirical analysis lies in its demonstration of the effects of environmental factors related to the spread of crime and lower economic well-being, higher unemployment and poverty in families on the credit market in So…
Paraísos artificiales. La imagen drogada en la pintura europea del entresiglos XIX-XX
2015
Paraísos artificiales. La imagen drogada en la pintura europea del entresiglos XIX-XX. La presente investigación recopila y analiza la imagen pictórica drogada en el entresiglos XIX-XX europeo, prestando especial atención al caso español, desde la exposición descriptiva; un trabajo elaborado con voluntad de catálogo. Las conclusiones teóricas dan cuenta no sólo de que el leitmotiv tóxico puede convertirse en una temática cambiosecular en sí misma, también pone de manifiesto como el uso y abuso de narcóticos, estimulantes y drogas visionarias conforma el imaginario europeo, una iconografía que continua vigente en la segunda década del siglo XXI. A finales del siglo XIX y principios del XX el…
Self-perception about emerging digital skills in higher education students
2020
El mercado laboral actual exige nuevas cualidades y conocimientos a los recién egresados de las universidades, incluidas las habilidades digitales, no existiendo suficientes investigaciones sobre la autopercepción del estudiantado al respecto. El objetivo de esta investigación fue medir la percepción que el estudiantado tiene sobre sus propias habilidades digitales del siglo XXI, en relación con el uso de las tecnologías de la comunicación (TIC) en la Educación Superior. Se generó y aplicó un cuestionario a 356 estudiantes con la técnica de muestreo aleatorio estratificado. Se realizó un análisis de componentes principales avalado por valores adecuados del coeficiente Kaiser-Meyer-Olkin y d…
La consagración de los derechos fundamentales: de principios generales a texto fundacional de la Unión Europea
2014
<p>El autor argumenta que el reconocimiento formal de los derechos fundamentales como parte de los fundamentos comunes de la UE mediante la remisión a la Carta de los Derechos Fundamentales en el Tratado de Lisboa (otorgándole carácter vinculante y, por ende, elevando su rango y confiriéndole el mismo valor jurídico que los Tratados) ha proporcionado una mayor apariencia constitucional a la UE, pero no un nivel más generoso de protección y de disfrute de la ciudadanía. En efecto, además de haber prescindido de garantías específicas, la Carta de la UE ha introducido diversas asimetrías inaceptables, tales como la quiebra del principio de indivisibilidad (los derechos civiles y los soci…
La industria del cómic en España: radiografía de ¿un mito o una realidad?
2011
In spite of the importance of figures referred to published titles, or number of copies printed, which help to set publishing strategies and to really know the comic situation in Spain, there are no liable data. We are giving in this article, some enlightening data along with some explanations related to the evolution of the market from 2001 to 2009. The different titles are grouped considering the place they come from (Europe, Asia, United States…), along with their format (album, book, magazine, comic-book…). Using all this information, we can deduce evolution lines, tendencies, futures perspectives in an industry that, despite its precariousness, is facing an increasing number of copies …
Compatibility between traditional ground layers and 3D printing materials
2018
Starting point of this work was the restoration of a Panel Painting depicting the Adoration of the Shepherds with a Saint Bishop, by an unknown author, stored in the Galleria Regionale della Sicilia di Palazzo Abatellis, in Palermo. It was decided to integrate a missing angular decorative element of the painting’s frame in order to restore the integrity of the frame by reverse engineering and 3D printing. Reintegration was feasible as the frame has a modular decorative pattern and the remaining three corners were available. Reverse engineering and 3D printing techniques have been used in order to find a solution according to the principles of recognition, reversibility and compatibility. Mo…