El estrés oxidativo juega un papel importante como cofactor en la patogénesis del virus de la inmunodeficiencia humana (VIH). Los individuos infectados con VIH desarrollan además deficiencia en micronutrientes antioxidantes que recrudecen aún más el estado redox. En la era…

Las plantas medicinales y sus preparaciones farmacéuticas tienen cada vez mayor aceptación por parte del personal de salud y de la población en general. Su utilización se concentra fundamentalmente en la Atención Primaria de Salud, donde contribuyen a resolver muchos…

Knowledge acquisition for systems based on knowledge can be called knowledge engineering, according to Feigenbaum (1980) who used the term to describe the reduction of a wide context of knowledge for a set of facts and rules. The term Knowledge…

In this research line we are exploring the possibility of having multiple preference criteria to compare arguments in in Defeasible Argumentation. In this work we are assuming a goaloriented Argumentative System, to which an application or an agent may seek…

Complex control tasks may be solved by dividing them into a more specific and more easily handled subtasks hierarchy. Several authors have demonstrated that the incremental layered evolution paradigm allows obtaining controllers capable of solving this type of tasks.
In…

No contexto econômico atual, onde a competição entre as empresas está cada vez mais relacionada à sua capacidade de transformar informação em conhecimento e este último em decisões e ações de negócio, o Data Warehouse (DW) exerce papel fundamental como…

An Electronic Government Procurement (e-GP) project, as most of complex software systems development and implantation, requires sophisticated and strong managerial concepts and skills. So, an effective and consistent managerial framework is needed.
Traditional project management models, that propose a series…

Effective document retrieval using domain knowledge and semantics is one of the major challenges in Information Retrieval. Over the last years, there has been a growing interest in ontologies as an artifact for human knowledge representation and a critical component…

A re-design process implies dealing with complex interactions between stakeholders, especially if we are talking about a personalization re-engineered process, which can be applied to an existing web application. In this context, knowledge becomes a main factor of influence, but…

In the last few years, several studies have emphasized the use of ontologies as an alternative to organization of the information.
The notion of ontology has become popular in fields such as intelligent information integration, information retrieval on the Internet,…