Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Martins, J. S. Sá"'
Publikováno v:
Phys. Rev. C 85, 035201 (2012)
This paper presents a detailed assessment of the ability of the 240 Skyrme interaction parameter sets in the literature to satisfy a series of criteria derived from macroscopic properties of nuclear matter in the vicinity of nuclear saturation densit
Externí odkaz:
http://arxiv.org/abs/1202.3902
We have simulated the evolution of sexually reproducing populations composed of individuals represented by diploid genomes. A series of eight bits formed an allele occupying one of 128 loci of one haploid genome (chromosome). The environment required
Externí odkaz:
http://arxiv.org/abs/0911.0589
An agent-based computer simulation of death by inheritable mutations in a changing environment shows a maximal population, or avoids extinction, at so intermediate mutation rate of the individuals. Thus death seems needed to al for evolution of the f
Externí odkaz:
http://arxiv.org/abs/0809.0285
Cichlid fishes are one of the best model system for the study of evolution of the species. Inspired by them, in this paper we simulated the splitting of a single species into two separate ones via random mutations, with both populations living togeth
Externí odkaz:
http://arxiv.org/abs/0708.3103
Publikováno v:
Physica A 375 (2007) 375-380
The experiment consists of counting and measuring the size of the many fragments observed after the fall of a mercury drop on the floor. The size distribution follows a power-law for large enough fragments. We address the question of a possible cross
Externí odkaz:
http://arxiv.org/abs/cond-mat/0612367
Numerical simulations have shown that certain driven nonlinear systems can be characterized by mean-field statistical properties often associated with ergodic dynamics [C.D. Ferguson, W. Klein, and J.B. Rundle, Phys. Rev. E 60, 1359 (1999); D. Egolf,
Externí odkaz:
http://arxiv.org/abs/physics/0604053
We investigate the macroscopic effects of the ingredients that drive the origin of species through sympatric speciation. In our model, sympatric speciation is obtained as we tune up the strength of competition between individuals with different pheno
Externí odkaz:
http://arxiv.org/abs/q-bio/0603029
We introduce an analytical model for population dynamics with intra-specific competition, mutation and assortative mating as basic ingredients. The set of equations that describes the time evolution of population size in a mean-field approximation ma
Externí odkaz:
http://arxiv.org/abs/q-bio/0508016
Publikováno v:
Physica A 376 (2007) 378
A microscopic agent dynamical model for diploid age-structured populations is used to study evolution of polymorphism and sympatric speciation. The underlying ecology is represented by a unimodal distribution of resources of some width. Competition a
Externí odkaz:
http://arxiv.org/abs/q-bio/0505017
Publikováno v:
European Physical Journal B 45 (2005) 529
We use a microscopic model of population dynamics, a modified version of the well known Penna model, to study some aspects of microevolution. This research is motivated by recent reports on the effect of selective hunting on the gene pool of bighorn
Externí odkaz:
http://arxiv.org/abs/q-bio/0504021