Contributo in atti di convegno
The role of chaos for inert and reacting transport |
We investigate passive transport of inert and reacting substances in fluid flows. As for inert transport we mainly focus on the Lagrangian properties. In particular, we study the single particle dynamics in order to investigate the conditions for observing standard or anomalous diffusion. This… | |
Information Retrieval of Color Images via Wavelets |
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Generalized de la Vallée Poussin operators for Jacobi weights |
Starting from a natural generalization of the trigonometric case, we construct a de la Vall\'ee Poussin approximation process in the uniform and L1 norms. With respect to the classical approach we obtain the convergence for a wider class of Jacobi weights. Even if we only consider the Jacobi case,… | |
Analisi e conservazione per immagini |
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A multi-layer wall model in arterial drug-eluting stents |
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An application of von Neumann Algebras to computational complexity |
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An adaptative method Volterra-Fredholm integral equations on the half line |
In this paper we develop a direct quadrature method for solving Volterra-Fredholm integral equations on an unbounded spatial domain. These problems, when related to some important physical and biological phenomena, are characterized by kernels that present variable peaks along space. The method we… | |
Un metodo numerico per l'integrazione di sistemi iperbolici |
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A reduced implicit scheme, via discrete stream function generation, for unsteady Navier-Stokes equations in general curvilinear coordinates. |
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Diffusion of heavy particles in turbulent flows |
Relative dispersion of tracers - i.e. very small, neutrally buoyant particles-, is particularly efficient in incompressible turbulent flows. Due to the non smooth behaviour of velocity differences in the inertial range, the separation distance between two trajectories, R(t)=X1(t)-X2(t) , grows as a… |
