300 citations · 748 across the 27 of their papers we have counts for
4 papers · 1 filter
Dynamic Drop Models
P. M. C. de Oliveira, T. J. P. Penna, A. R. Lima +3
We follow the dynamic evolution of a cluster of Ising spins pointing up surrounded by other spins pointing down, on a lattice. The cluster represents a liquid drop. Under a microsc…
Preprocessing in Attractor Neural Networks
C. G. Carvalhaes, A. T. Costa, T. J. P. Penna
Preprocessing the input patterns seems the simplest approach to invariant pattern recognition by neural networks. The Fourier transform has been proposed as an appropriate and eleg…
Efficient Monte Carlo Simulation of Biological Aging
T. J. P. Penna, D. Stauffer
A bit-string model of biological life-histories is parallelized, with hundreds of millions of individuals. It gives the desired drastic decay of survival probabilities with increas…
A Bit-String Model for Biological Aging
Thadeu J. P. Penna
We present a simple model for biological aging. We studied it through computer simulations and we have found this model to reflect some features of real populations.