Articolo in rivista
Spin-geodesic deviations in the Schwarzschild spacetime |
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On the stability of the standard Riemann semigroup |
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Exact and heuristic approaches for the maximum lifetime problem in sensor networks with coverage and connectivity constraints |
The aim of the Connected Maximum Lifetime Problem is to define a schedule for the activation intervals of the sensors deployed inside a region of interest, such that at all times the activated sensors can monitor a set of interesting target locations and route the collected information to a central… | |
Scattering by a Schwarzschild black hole of particles undergoing drag force effects |
The scattering of massive particles by a Schwarzschild black hole also undergoing a drag force is considered. The latter is modeled as a viscous force acting on the orbital plane, with components proportional to the associated particle 4-velocity components. The energy and angular momentum losses… | |
Constraining spacetime torsion with the Moon and Mercury |
We report a search for new gravitational physics phenomena based on Riemann-Cartan theory of general relativity including spacetime torsion. Starting from the parametrized torsion framework of Mao, Tegmark, Guth, and Cabi, we analyze the motion of test bodies in the presence of torsion, and, in… | |
A Bayesian method for multispectral image data classification |
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Analysis of a nonconvex problem related to signal selective smoothing |
We study some properties of a nonconvex variational problem. The infimum of the functional that has to be minimized fails to be attained. Instead, minimizing sequences develop gradient oscillations which allow them to decrease the value of the functional. We show an existence result for a perturbed… | |
Comparing first-order microscopic and macroscopic crowd models for an increasing number of massive agents |
A comparison between first-order microscopic and macroscopic differential models of crowd dynamics is established for an increasing number N of pedestrians. The novelty is the fact of considering massive agents, namely, particles whose individual mass does not become infinitesimal when N grows.… | |
Remarks on nonlocal problem involving the Dirichlet energy |
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Variational approximation of a second order free discontinuity problem in computer vision |
