While bit based order based and real valued genetic algorithms have been well studied in the literature the xed length subset representation has received rela tively little attention We discuss various crossover operators for this representation and the pitfalls associated with each In particular we explore the ratio of the sub set size to the set size This important ratio is a major contributo...

The convergence of multilocus systems under viability selection with constant fitnesses is investigated. Generations are discrete and nonoverlapping; the monoecious population mates at random. The number of multiallelic loci, the linkage map, dominance, and epistasis are arbitrary. It is proved that if epistasis or selection is sufficiently weak (and satisfies a certain nondegeneracy assumption...

The rate of convergence and the structure of stable populations are studied for a simple, and yet nontrivial, family of genetic algorithms.

The search ability of an Evolutionary Algorithm (EA) depends on the variation among the individuals in the population [3, 4, 8]. Maintaining an optimal level of diversity in the EA population is imperative to ensure that progress of the EA search is unhindered by premature convergence to suboptimal solutions. Clearer understanding of the concept of population diversity, in the context of evolut...

This paper describes a selection approach for evolutionary algorithms – called feminine selection – that is inspired in the fact that in some animal species the female actively select their reproduction partners. In these species, the males exhibit their attributes, sometimes fighting with other males, and the female choose the one she considers the best. To implement this approach, the algorit...

Besides the difficulty of the application problem to be solved with Genetic Algorithms (GAs), an additional difficulty arises because the quality of the solution found, or the computational resources required to find it, depends on the selection of the Genetic Algorithm’s characteristics. The purpose of this paper is to gain some insight into one of those characteristics: the difficult problem ...

Pressure-driven transport of particles through a symmetric converging-diverging microchannel is studied by solving a coupled nonlinear system, which is composed of the Navier-Stokes and continuity equations using the arbitrary Lagrangian-Eulerian finite-element technique. The predicted particle translation is in good agreement with existing experimental observations. The effects of pressure gra...

Migration is a common strategy used by birds that breed in seasonal environments. Selection for greater migration efficiency is likely to be stronger for terrestrial species whose migration strategies require non-stop transoceanic crossings. If multiple species use the same transoceanic flyway, then we expect the migration strategies of these species to converge geographically towards the most ...

as the science of mechanics has been improved in recent years, different standards have been created in designing structures such as pressure vessels. most of these standards have been developed by means of experience and examination. today, most of researches, proceed the numerical analysis of the different elements of the pressure vessels and somehow they have put some questions on the previo...

Much has been debated and written about the translation proviso, its implications, and its rationality. At its core, it is about communication and a transition in religious communication that means it can become secularly engaged. This paper argues that the theory of the translation proviso is insufficient to accommodate religious communication and, in order to support the arguments made, consi...