Search results for "ISD"

Electromagnetic wave propagation in non-homogeneous waveguides

2015

We investigate an electromagnetic waveguide, having several cylindrical ends. The waveguide is assumed to be empty and to have a perfectly conductive boundary. We study the electromagnetic field, excited in the waveguide in the presence of charges and currents. The field can be described as a solution of the stationary Maxwell system with conductive boundary conditions and “intrinsic” radiation conditions at infinity. We prove the problem to be well-posed. Electromagnetic waves propagation in the waveguide can be described by means of a scattering matrix. We introduce such a matrix for all values of the spectral parameter k in the waveguide continuous spectrum and study its properties. Moreove…

M.N. e altri c. Belgio: qualche osservazione dissenziente

2021

In this commentary to the M.N. v. Belgium case, the authors criticize the three fundamental arguments on which the decision of the European Court of Human Rights is founded: the approach based on ‘originalism’, the approach based on the Courts’ precedents, and the approach based on consequentialism. As far as consequentialism is concerned, the authors approve the use of non strictly legal arguments in the Court’s reasoning, convinced as they are that human rights courts, more than any other judge, are not la bouche de la loi, but hold political power. We criticize the Court's choice to give space to only one of the (possible) political consequences of its decision, completely disregarding a…

Asymptotic Hölder regularity for the ellipsoid process

2020

We obtain an asymptotic Hölder estimate for functions satisfying a dynamic programming principle arising from a so-called ellipsoid process. By the ellipsoid process we mean a generalization of the random walk where the next step in the process is taken inside a given space dependent ellipsoid. This stochastic process is related to elliptic equations in non-divergence form with bounded and measurable coefficients, and the regularity estimate is stable as the step size of the process converges to zero. The proof, which requires certain control on the distortion and the measure of the ellipsoids but not continuity assumption, is based on the coupling method.

Convergence of dynamic programming principles for the $p$-Laplacian

2018

We provide a unified strategy to show that solutions of dynamic programming principles associated to the $p$-Laplacian converge to the solution of the corresponding Dirichlet problem. Our approach includes all previously known cases for continuous and discrete dynamic programming principles, provides new results, and gives a convergence proof free of probability arguments.

Analisi delle distribuzioni dimensionali delle gocce di pioggia rilevate mediante un disdrometro ottico

2008

Caratteri energetici dedotti dalle distribuzioni dimensionali delle gocce di pioggia rilevate mediante un disdrometro ottico

2011

La "queer theory" applicata agli schemi del diritto processuale, ossia: l'incertezza di genere dei provvedimenti in camera di consiglio in materia di…

2018

L’autore affronta il delicato e controverso tema della c.d. cameralizzazione del processo civile, indagando sulla natura, contenziosa o volontaria, di taluni specifici provvedimenti emessi nella procedura fallimentare e traendone le conseguenze in tema di ricorribilità per cassazione ex art. 111 Cost. o revocabilità. In particolare l’autore distingue, in particolare, il decreto che rigetta la conversione in fallimento di una procedura di amministrazione straordinaria ex lege Prodi da quello che riforma il provvedimento già emesso di conversione in fallimento. The author addresses the delicate and controversial theme of the so called cameralization of the civil trial, investigating the natur…

La suprema giurisdizione nella Sardegna moderna. Travagli della Real Audiencia (1564-1651)

2019

The institution of the Real Audiencia in the kingdom of Sardinia since the 1560s is part of a wider process which saw the rise and development of royal supreme courts of justice in several European countries of the early modern period. In fact, major State formation processes all around Europe required that monarchs increased their control on local authorities and that new increasingly centralised systems of judicial review gained precedence over all particular jurisdictions, feudal as well as municipal. This brought about a dramatic transformation in the field of criminal law enforcement and administration of justice.

A. Musi, Il feudalesimo nell'Europa moderna (recensione)

2010

Recensione a Aurelio Musi, "Il feudalesimo nell'Europa moderna", pubblicato da il Mulino, Bologna 2007

A fast Fourier transform based direct solver for the Helmholtz problem

2018

This article is devoted to the efficient numerical solution of the Helmholtz equation in a two‐ or three‐dimensional (2D or 3D) rectangular domain with an absorbing boundary condition (ABC). The Helmholtz problem is discretized by standard bilinear and trilinear finite elements on an orthogonal mesh yielding a separable system of linear equations. The main key to high performance is to employ the fast Fourier transform (FFT) within a fast direct solver to solve the large separable systems. The computational complexity of the proposed FFT‐based direct solver is O(N log N) operations. Numerical results for both 2D and 3D problems are presented confirming the efficiency of the method discussed…