In this article we describe our experience in the development of a personalizable dissemination model for the Miguel de Cervantes Digital Library’s Web-based newsletter-service, which combines adaptive with adaptable personalization techniques, being capable or ranking news according to navigation-inferred preferences…

The theory change area have defined several operators trying to model the dynamic of knowledge. The goal of this work is to introduce a preprocessor of perceptions that could be part of an agent. The purpose of the preprocessor is…

Los modelos gráficos probabilísticos, tales como las redes bayesianas y los diagramas de influencias permiten representar de forma coherente el conocimiento de un dominio bajo condiciones de incertidumbre. Están basados en los fundamentos de la teoría de la probabilidad y…

We have developed a method and prototype program for assisting two experts in their attempts to construct a single, consensus knowledge base. We show that consensus building can be effectively facilitated by a debugging approach that identifies, explains, and resolves…

A methodology to improve the effectiveness of the design of innovation is proposed based on knowledge in the fields of psychometrics, utility theory and stochastic choice modeling. It is comprised of a consumer response and a managerial design process. The…

Gene expression arrays are a technology used to measure quantities of messenger ribonucleic acid (mRNA). Application of the technology involves a variety of physical processes beginning with the acquisition of mRNA samples and ending with the fluorescence imaging of a…

This thesis developed and applied tools to bridge the gap between available data and action for urban air quality management, focusing on strategies to reduce particle concentrations. One of the principal thesis contributions is a Bayesian method to exploit the…

ABSTRACT: Micronutrients availability is na important constraint for crops in the Cerrado region, and its correction is always needed to obtaining economic yields. Old and new nutritional problems came with the agriculture expansion in Cerrado. Although being crucial for increasing…

The family agriculture is an important segment in Brasilian, as on the social point of view, as on the gross value production from the national farming. In spite of its importance, however, it faces many problems as , decapitalization, access…

The dissertation examines aesthetic, scientific and occult evocations of fluids such as air at the turn of the 20th century. Eighteenth century experimental philosophy postulated so-called "imponderable fluids" understood as instances of a subtle matter that fills empty space. The…