Articolo in rivista

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.…

Hybrid Lattice Boltzmann/Finite Difference simulations of viscoelastic multicomponent flows in confined geometries

We propose numerical simulations of viscoelastic fluids based on a hybrid algorithm combining Lattice-Boltzmann models (LBM) and Finite Differences (FD) schemes, the former used to model the macroscopic hydrodynamic equations, and the latter used to model the polymer dynamics. The kinetics of the…

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

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…

Exploring the relationship between the magnitudes of seismic events

The distribution of the magnitudes of seismic events is generally assumed to be independent on past seismicity. However, by considering events in causal relation, for example, mother-daughter, it seems natural to assume that the magnitude of a daughter event is conditionally dependent on one of the…

Particle trapping in three-dimensional fully developed turbulence

The statistical properties of fluid particles transported by a three-dimensional fully developed turbulent flow are investigated by means of high resolution direct numerical simulations. Single trajectory statistics are investigated in a time range spanning more than three decades, from less than a…

Algebraically special frequencies of NUT black holes

The algebraically special frequencies of Taub-NUT black hole are investigated in detail in comparison with the known results concerning the case of Schwarzschild. The periodicity of the time coordinate, required for regularity of the solution, prevents algebraically special frequencies to be…

Robust design optimization for egressing pedestrians in unknown environments

In this paper, we deal with a group variable in size of pedestrians moving in a unknown confined environment and searching for an exit. Pedestrian dynamics are simulated by means of a recently introduced microscopic (agent-based) model, characterized by an exploration phase and an egress phase.…

Towards a mesoscopic model of water-like fluids with hydrodynamic interactions

We present a mesoscopic lattice model for non-ideal fluid flows with directional interactions, mimicking the effects of hydrogen bonds in water. The model supports a rich and complex structural dynamics of the orientational order parameter, and exhibits the formation of disordered domains whose…

A Comparative Simulation Study of Wavelet Shrinkage Estimators for Poisson Counts

Using computer simulations, the finite sample performance of a number of classical and Bayesian wavelet shrinkage estimators for Poisson counts is examined. For the purpose of comparison, a variety of intensity functions, background intensity levels, sample sizes, primary resolution levels, wavelet…