Articolo in rivista

Assessing the Resource Usage in Scheduling with Incompatibilities

In the field of resource constrained scheduling, the papers in the literature are mainly focused on minimizing the maximum completion time of a set of tasks to be carried out, paying attention to respecting the maximum simultaneous availability of each resource type in the system. This work,…

Experimental Results about MPI Collective Communication Operations

Collective communication performance is critical in a number of MPI applications. In this paper we focus on two widely used primitives, broadcast and reduce, and present experimental results obtained on a cluster of PC connected by Myrinet. We compare the performance of the MPICH primitives…

ALIASING AND TWO-DIMENSIONAL WELL-BALANCED FOR DRIFT-DIFFUSION EQUATIONS ON SQUARE GRIDS

A notion of "2D well-balanced" for drift-diffusion is proposed. Exactness at steady-state, typical in 1D, is weakened by aliasing errors when deriving "truly 2D" numerical fluxes from local Green's function. A main ingredient for proving that such a property holds is the optimality of the…

On the exponential stability of discrete Volterra systems.

Numeri di Pisot, Postage Stamp e Robotica

Linear inviscid damping for shear flows near Couette in the 2D stably stratified regime

WeinvestigatethelinearstabilityofshearsneartheCouetteflowforaclassof2Dincompressible stably stratified fluids. Our main result consists of nearly optimal decay rates for perturbations of stationary states whose velocities are monotone shear flows (U (y), 0) and have an exponential density profile.…

Efficient implementation of a Structured Total Least
Squares based speech compression method

We present a fast implementation of a recently proposed speech compression scheme, based on an all-pole model of the vocal tract. Each frame of the speech signal is analyzed by storing the parameters of the complex damped exponentials deduced from the all-pole model and its initial conditions.…

Il calcolo prima del FINAC

Analisi storica degli strumenti di calcolo utilizzati presso l'allora Istituto Nazionale per le Applicazioni del Calcolo prima dell'acquisto del calcolatore elettronico FINAC

Analysis of Perturbed Volterra Integral Equations on Time Scales

This paper describes the effect of perturbation of the kernel on the solutions of linear Volterra integral equations on time scales and proposes a new perspective for the stability analysis of numerical methods.

Modeling and Simulation of Cancer Immunoprevention Vaccine

We present an in silico model that simulates the immune system responses to tumor cells in naive and vaccinated mice. We have demonstrated the ability of this model to accurately reproduce the experimental results. Motivation: In vivo experiments on HER-2/neu mice have shown the effectiveness of…