Istituto per le Applicazioni del Calcolo
"Mauro Picone"
Articolo in rivista
Automatic coarsening in Algebraic Multigrid utilizing quality measures for matching-based aggregations |
In this paper, we discuss the convergence of an Algebraic MultiGrid (AMG) method for general symmetric positive-definite matrices. The method relies on an aggregation algorithm, named coarsening based on compatible weighted matching, which exploits the interplay between the principle of compatible… | |
Metabolic disorders: How can systems modelling help? |
Abstract | |
Hydrodynamics of air entrainment by moving contact lines |
We study the dynamics of the interface between two immiscible fluids in contact with a chemically homogeneous moving solid plate. We consider the generic case of two fluids with any viscosity ratio and of a plate moving in either directions (pulled or pushed in the bath). The problem is studied by… | |
On the linearization of the Belinski-Alekseev exact solution for two charged masses in equilibrium |
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Penalized wavelet nonparametric univariate logistic regression for irregular spaced data |
This paper concerns the study of a non-smooth logistic regression function. The focus is on a high-dimensional binary response case by penalizing the decomposition of the unknown logit regression function on a wavelet basis of functions evaluated on the sampling design. Sample sizes are arbitrary (… | |
On the measurement of vortex filament lifetime statistics in turbulence |
A numerical study of turbulence seeded with light particles is presented. We analyze the statistical properties of coherent, small-scale structures by looking at the trapping events of light particles inside vortex filaments. We study the properties of particles attracting set, measuring its… | |
Wavelet simultaneous approximation from samples affected by noise |
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A system of degenerate parablic nonlinear PDE's: a new free boundary problem |
We prove existence of solutions of a new free boundary problem described by a system of degenerate parabolic equations. The problem arises in petroleum engineering and concerns fluid flows in diatomite rocks. The unknown functions represent the pressure of the fluid and a damage parameter of the… | |
A Bayesian method for multispectral image data classification |
The problem of classifying multispectral image data is studied here. We propose a new Bayesian method for this. The method uses "a priori" spatial information modeled by means of a suitable Markov random field. The image data for each class are assumed to be i.i.d. following a multivariate Gaussian… | |
Effects of Thermal Control and of Passive Solar Elements on the Dynamical Behaviour of a Building |
