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Search Results: 1 - 10 of 2069 matches for " Fabrizio Piacentini "
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Experimental tests of hidden variable theories from dBB to Stochastic Electrodynamics
Giorgio Brida,Marco Genovese,Marco Gramegna,Fabrizio Piacentini,Enrico Predazzi,Ivano Ruo-Berchera
Physics , 2006, DOI: 10.1088/1742-6596/67/1/012047
Abstract: In this paper we present some of our experimental results on testing hidden variable theories, which range from Bell inequalities measurements to a conclusive test of stochastic electrodynamics.
Experimental Test of an Event-Based Corpuscular Model Modification as an Alternative to Quantum Mechanics
Giorgio Brida,Ivo Pietro Degiovanni,Marco Genovese,Alan Migdall,Fabrizio Piacentini,Sergey V. Polyakov,Paolo Traina
Physics , 2013, DOI: 10.7566/JPSJ.82.034004
Abstract: We present the first experimental test that distinguishes between an event-based corpuscular model (EBCM) [H. De Raedt et al.: J. Comput. Theor. Nanosci. 8 (2011) 1052] of the interaction of photons with matter and quantum mechanics. The test looks at the interference that results as a single photon passes through a Mach-Zehnder interferometer [H. De Raedt et al.: J. Phys. Soc. Jpn. 74 (2005) 16]. The experimental results, obtained with a low-noise single-photon source [G. Brida et al.: Opt. Expr. 19 (2011) 1484], agree with the predictions of standard quantum mechanics with a reduced $\chi^2$ of 0.98 and falsify the EBCM with a reduced $\chi^2$ of greater than 20.
Improved implementation of nonclassicality test for a single particle
Giorgio Brida,Ivo Pietro Degiovanni,Marco Genovese,Fabrizio Piacentini,Valentina Schettini,Nicolas Gisin,Sergey V. Polyakov,Alan Migdall
Mathematics , 2008, DOI: 10.1103/PhysRevA.79.044102
Abstract: Recently a test of nonclassicality for a single qubit was proposed [R. Alicki and N. Van Ryn, J. Phys. A: Math. Theor. 41, 062001 (2008)]. We present an optimized experimental realization of this test leading to a 46 standard deviation violation of classicality. This factor of 5 improvement over our previous result was achieved by moving from the infrared to the visible where we can take advantage of higher efficiency and lower noise photon detectors.
Un importante contributo allo studio degli apocrifi. Il Vangelo di Nicodemo in Polonia: tradizione latina e traduzione polacca An Important Contribution to the Studies on Apocryphal Literature. The Gospel of Nicodemus in Poland: Latin Textual Tradition and Polish Translation
Marcello Piacentini
Studi Slavistici , 2012,
Abstract: The critical edition of Gesta Pilati in the Polish translation, which was edited together with a Latin text of this famous account, is one of the most important outcomes for studies on apocryphal literature. Medievalist scholar Zbigniew Izydorczk points out that the 1509 Latin manuscript kept in the Jagellonian Library reflects the traces of the earliest Latin translation of this account. Polish philologist Wies aw Wydra demonstrates that the Polish translation dating back to the end of XV Century derives from the same redaction of the Latin text handed down by the 1509 manuscript. Yet some differences suggest that the 1509 manuscript is not the direct antigraph of the translation. Indeed there exists another witness (PAU 1713) which belongs to the same family as the 1509. The Polish translation clearly agrees partly with the 1509 one, partly with the PAU 1713 one. The critical edition of Gesta Pilati in the Polish translation, which was edited together with a Latin text of this famous account, is one of the most important outcomes for studies on apocryphal literature. Medievalist scholar Zbigniew Izydorczk points out that the 1509 Latin manuscript kept in the Jagellonian Library reflects the traces of the earliest Latin translation of this account. Polish philologist Wies aw Wydra demonstrates that the Polish translation dating back to the end of XV Century derives from the same redaction of the Latin text handed down by the 1509 manuscript. Yet some differences suggest that the 1509 manuscript is not the direct antigraph of the translation. Indeed there exists another witness (PAU 1713) which belongs to the same family as the 1509. The Polish translation clearly agrees partly with the 1509 one, partly with the PAU 1713 one.
Quantum characterization of superconducting photon counters
Giorgio Brida,Luigi Ciavarella,Ivo P. Degiovanni,Marco Genovese,Lapo Lolli,Maria G. Mingolla,Fabrizio Piacentini,Mauro Rajteri,Emanuele Taralli,Matteo G. A. Paris
Physics , 2011, DOI: 10.1088/1367-2630/14/8/085001
Abstract: We address the quantum characterization of photon counters based on transition-edge sensors (TESs) and present the first experimental tomography of the positive operator-valued measure (POVM) of a TES. We provide the reliable tomographic reconstruction of the POVM elements up to 11 detected photons and M=100 incoming photons, demonstrating that it is a linear detector.
Accurate Tools for Analyzing the Behavior of Impulse Noise Reduction Filters in Color Images  [PDF]
Fabrizio Russo
Journal of Signal and Information Processing (JSIP) , 2013, DOI: 10.4236/jsip.2013.41005
Abstract:

Effective cancellation of noise and preservation of color/structural information are features of paramount importance for any filter devoted to impulse noise removal in color images. In this paper novel full-reference tools for analyzing the behavior of this family of filters are presented. The proposed approach is based on the classification of color errors into two main classes that separately take into account the inaccuracy in removing noise pulses and the filtering distortion. The distortion errors are then classified into two subclasses for a deeper analysis of the filtering behavior. Computer simulations show that the proposed method gives more accurate results than using other measures of filtering performance in the literature. Furthermore, the method can easily yield the spatial location of the different filtering features in the image.

Relativistic Derivations of de Broglie and Planck-Einstein Equations  [PDF]
Fabrizio Logiurato
Journal of Modern Physics (JMP) , 2014, DOI: 10.4236/jmp.2014.51001
Abstract:

Special Relativity sets tight constraints on the form of the possible relations between the four-momentum of a particle and the wave four-vector. In fact, we demonstrate that there is just one way, according to Special Relativity, to relate the energy and the momentum of a corpuscle with the characteristics of a plane wave, frequency and wave vector, if the momentum has to flow in the same direction of the wave propagation: the laws must be of direct proportionality like de Broglie \"\" and Planck-Einstein \"\" equations.

Sepsis grave y shock séptico: Todo hecho, todo por hacer Severe sepsis and septic shock: everything done, everything to be done
E. Piacentini,R. Ferrer
Medicina Intensiva , 2012,
Abstract:
Embedding Authentication & Authorization in Discovery Protocols for Standard Based Publish/Subscribe Middleware: A Performance Evaluation  [PDF]
Fabrizio Ronci, Marco Listanti
Communications and Network (CN) , 2011, DOI: 10.4236/cn.2011.31006
Abstract: Standard based Pub/Sub middleware, such as OMG Data Distribution Service (DDS), could assume a key role in supporting computer communications requiring continuous state information updating, deterministic deadline to data delivering and real time information adjourning. This kind of capability could be well ex-ploited by Peer-To-Peer (P2P) systems, Internet-wide as long as private ones, like in Public Safety or Civil Protection Communication Systems; but Pub/Sub specifications, and DDS/RTPS (Real Time Publish Sub-scribe) as well, usually do not provide Authentication & Authorization (AA) mechanisms. In the present work two important novelties are assessed: a possible scheme to implement AA in DDS/RTPS networks and a time performance evaluation study about embedded Authentication in RTPS.
Floquet Eigenvectors Theory of Pulsed Bias Phase and Quadrature Harmonic Oscillators  [PDF]
Fabrizio Palma, Stefano Perticaroli
Circuits and Systems (CS) , 2012, DOI: 10.4236/cs.2012.31010
Abstract: The paper presents an analytical derivation of Floquet eigenvalues and eigenvectors for a class of harmonic phase and quadrature oscillators. The derivation refers in particular to systems modeled by two parallel RLC resonators with pulsed energy restoring. Pulsed energy restoring is obtained through parallel current generators with an impulsive characteristic triggered by the resonators voltages. In performing calculation the initial hypothesis of the existence of stable oscillation is only made, then it is verified when both oscillation amplitude and eigenvalues/eigenvectors are deduced from symmetry conditions on oscillator space state. A detailed determination of the first eigenvector is obtained. Remaining eigenvectors are hence calculated with realistic approximations. Since Floquet eigenvectors are acknowledged to give the correct decomposition of noise perturbations superimposed to the oscillator space state along its limit cycle, an analytical and compact model of their behavior highlights the unique phase noise properties of this class of oscillators.
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