The general objective of this thesis is the development of an adaptive technique for extracting knowledge in large databases. Nowadays, technology allows storing huge volumes of information. For this reason, the availability of techniques that allow, as a first stage,…

To find a good termination criterion for genetic algorithms is a difficult and frequently ignored task. In most instances the practitioner stops the algorittm after a predefined number of generations or function evaluations. How this number is established? This stop…

We present the first vouchered record from Chubut provincein Futaleufú Department. Suburbs of Esquel city, along Ruta Nacional 259 to Trevelin on El Pinar, Roberts Farm. This is the southernmost record for the species; to our knowledge the previous southernmost…

En el presente estudio se analizan los proyectos productivos apoyados por el Programa 3x1 Para Migrantes en Zacatecas durante el periodo 2002-2007 a fin de determinar dentro del concepto de cultura emprendedora la identificación del giro en que les agradaría…

The goal of this article is to present the first results of a study looking forward to propose a model of software development for a physically distributed environment (United States and Brazil). Thus, the objective is to combine empirical and…

The aim of this work is to relate two apparently independent concepts as belief revision and relevance. We propose a formal characterization for the notion of (ir)relevance by means of a set of postulates. Then we define (ir)relevance using change…

Increasing attention to higher education policies in the knowledge-based society makes important to understand the relationship between socio-economic family characteristics and educational choices. This paper considers the decision to go to college in Argentina as a family's economic decision. The…

Current reasoning systems attempt to model an agent's knowledge and interaction with its environment in a symbolic manner. This environment, its world is generally dynamic and changing due to natural evolution or the actions of other agents that are a…

Los virus herpes bovino 1 y 5 (BHV-1 y 5) afectan naturalmente al bovino,
especie en la que provocan diversas manifestaciones clínicas: rinotraqueítis, vulvovaginitis pustular infecciosa (IPV), balanopostitis (IPB), conjuntivitis, aborto y encefalitis. La
distribución de la infección es mundial,…

En los últimos años se ha asistido a un gran desarrollo del campo disciplinar de la Administración que se trasunta especialmente en el incremento en el número de carreras universitarias que se ocupan de sus distintas especialidades a nivel de…