3,134 research outputs found
CLEAN technique for polarimetric ISAR
No full textInverse synthetic aperture radar (ISAR) images are often used for classifying and recognising targets. To reduce the amount of data processed by the classifier, scattering centres are extracted from the ISAR image and used for classifying and recognising targets. This paper addresses the problem of estimating the position and the scattering vector of target scattering centres from polarimetric ISAR images. The proposed technique is obtained by extending the CLEAN technique, which was introduced in radar imaging for extracting scattering centres from single-polarisation ISAR images. The effectiveness of the proposed algorithm, namely, the Polarimetric CLEAN (Pol-CLEAN) is tested on simulated and real dataM. Martorella, A. Cacciamano, E. Giusti, F. Berizzi, B. Haywood, and B. Bate
Target recognition by means of polarimetric ISAR images
No full textAutomatic target recognition (ATR) is generally the reason why inverse synthetic aperture radar (ISAR) imaging systems are employed. Moreover, the use of fully polarimetric radar systems in radar imaging applications such as SAR and ISAR has enhanced both image quality and classification capabilities. The authors propose a novel technique for ATR using polarimetric ISAR (Pol-ISAR) images. The proposed method is based on a model matching approach. Results are obtained that show the effectiveness of such a technique.M. Martorella, E. Giusti, L. Demi, Z. Zhou, A. Cacciamano, F. Berizzi, B. Bate
Reply to: "Palmitoylethanolamide: problems regarding micronization, ultra-micronization and additives" Inflammopharmacology
No full textThis is a reply to a recently published Commentary: "Palmitoylethanolamide: problems regarding micronization, ultra-micronization and additives" Inflammopharmacology DOI: 10.1007/s10787-014-0202-3 , written in relation to our review article: Skaper SD, Facci L, Fusco M, della Valle MF, Zusso M, Costa B, Giusti P (2014) "Palmitoylethanolamide, a naturally occurring disease-modifying agent in neuropathic pain" Inflammopharmacology 22:79-94 DOI: 10.1007/s10787-013-0191-7 . We believe that the Commentary by Kriek contains a number of erroneous statements and misinterpretations of the published scientific/medical literature which our reply shall elaborate on. Further, the writer of the Commentary has a direct connection to a company, JP Russell Science Ltd that sells palmitoylethanolamide. The take-home message of our review remains as originally stated: "Collectively, the findings presented here propose that palmitoylethanolamide merits further consideration as a disease-modifying agent for controlling inflammatory responses and related chronic and neuropathic pain"
Automatic target recognition by means of polarimetric ISAR images and neural networks
No full text© 2009 IEEEInverse synthetic aperture radar (ISAR) images are often used for classifying and recognizing targets. Moreover, the use of fully polarimetric ISAR (Pol-ISAR) images enhances classification capabilities. In this paper, the authors propose a novel automatic target recognition (ATR) technique based on the use of fully Pol-ISAR images and neural networks (NNs). In order to reduce the amount of data processed by the classifier, the brightest scattering centers are first extracted by means of the Pol-CLEAN technique, and then, their scattering matrices are decomposed using Cameron's decomposition. A classifier based on the use of multilayer perceptron NN that makes use of the features extracted from the Pol-ISAR images is then implemented. A proof-of-concept test is performed on real data acquired during a controlled experiment in an anechoic chamber.Marco Martorella, Elisa Giusti, Amerigo Capria, Fabrizio Berizzi and Bevan Bate
Identifying berry antioxidants that help fight cancer
No full textAuthor institution (Giusti): Department of Food Science and Technology, The Ohio State Universit
A Boundary Element - Response Matrix Method for 3D Neutron Diffusion and Transport Problem
No full textAn application of a 3D Boundary Element Method (BEM), coupled with the Response Matrix (RM) technique, to solve the neutron diffusion and transport equations for multi-region domains is presented. The discussion is here limited to steady state problems, in which the neutrons have a wide energy spectrum, which leads to systems of several diffusion or transport equations. Moreover, the number of regions with different physical constants can be very large. The boundary integral equations concerning each region are solved via a polynomial moment expansion and, taking advantage of suitable recurrence formulas, the multi-fold integrals there involved are reduced to single or double integrals. The usual unknowns (the boundary particle density and its normal derivative) are here replaced by the partial currents entering or leaving each computational cell. The intuitive physical meaning of such quantities facilitates the application of the response matrix technique. Only eigenvalue (criticality) problems will be here considered. As it regards the transport equation, the use of the so called Simplified Spherical Harmonics method (SPN) allows, through suitable approximations, to cast the problem into a system of differential elliptic equations of the diffusion type, which can still be solved by BEM
1909-2009. Un secolo e due protagonisti europei: Gruau e Pavlovic disegnano la moda
No full textIl corso di laurea in “Culture e tecniche della moda” dell'Università di Bologna, con sede a Rimini, e l'Università di Belgrado propongono un progetto di ricerca che si concretizza in un workshop, nella realizzazione di due mostre con relativi cataloghi/journal d'exposition e nello scambio di libri, grazie alla partecipazione dell'Istituto Beni Culturali dell'Emilia Romagna.
Redattrici del progetto e responsabili del coordinamento generale, Nicoletta Giusti e Elisa Tosi Brandi.
B. TITOLARE DEL PROGETTO: Università di Bologna - Polo Scientifico e Didattico di Rimini, Corso di laurea in “Culture e tecniche della moda”, Facoltà di Lettere e Filosofia
C. PARTNER ITALIANI
Regione Emilia-Romagna - Servizio politiche Europee e Relazioni internazionali
Istituto Beni Culturali della Regione Emilia – Romagna
D. PARTNER SERBI
Ministero della Cultura della Repubblica di Serbia
Università di Belgrado
Facoltà di Arti Applicate di Belgrado
Facoltà di Filologia di Belgrado
Fondazione Milena Pavlovic Barilli - Pozarevac
Fiera di Belgrado
“Hesperia Educational’’ d.o.o. Casa Editrice, Società di Promozione di Eventi Culturali e Consultin
On the relevance of the scattering anisotropy for a low order transport method
No full textThe present paper is concerned with the extension of the treatment of the scattering anisotropy developed in the AN-SPN (or simply AN) method up to the approximation of the second order. To assess such extension, two 3D examples are considered: the first one is an axial piece of a 17×17 PWR MOX assembly containing the heads of control rods; while the second example is related to a 3D reactor core containing UO2 and MOX homogenized assemblies. It is shown that the passage from the isotropic to the linearly anisotropic approximation of the differential scattering cross section turns out into a remarkable improvement of the results, as regards the multiplication factor as well as the flux distribution. For the kind of problems like those here considered, less important is, on the contrary, the extension to the second order of the anisotropy, although such an upgrade may be included in the calculation with only an almost negligible effort, owing to the irrelevant impact on the computing time
Automatic target recognition by means of polarimetric ISAR images: a model matching based algorithm
No full textAutomatic target recognition (ATR) is generally the reason why ISAR imaging systems are employed. Moreover, the use of fully polarimetric radar systems in radar imaging applications such as SAR and ISAR has enhanced both image quality and classification capabilities. In this paper, the authors propose a novel technique for ATR by using Polarimetric ISAR (Pol-ISAR) images. The proposed method is based on a model matching approach. Results are obtained by using real data that show the effectiveness of such technique.M. Martorella, E. Giusti, L. Demi, Z. Zhou, A. Cacciamano, F. Berizzi and B. Bate
A boundary element–response matrix method for the multigroup criticality problems in the SP3 approximation
No full textThe 3D xyz multigroup BERM-SP3 transport method is here presented. This method, based on the simplified spherical harmonics approximation (SPN), with N = 3, and the assumption of linearly anisotropic scattering, makes use of a Response Matrix (RM) solution procedure, coupled with the Boundary Element Method (BEM), by which the SP3 partial differential equations are reduced to a system of boundary integral equations in terms of partial currents. Numerical problems, all endowed with a complete set of data and the reference results obtained by well assessed transport codes such as the discrete ordinate code TORT and the Monte Carlo code MCNP, illustrate the accuracy and efficiency of the method
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