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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…

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 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…

RESUMO: Folhas e caules, com sintomas de antracnose, foram coletados de populações nativas de Stylosanthes spp., de 1997 a 2000, em localidades de Minas Gerais, Goiás e Bahia, para avaliar a variabilidade patogenica do agente causal (Colletotrichum gloeosporioides). Duzentos e…

The notorious advances in textual information storage need fast and effcient tools to organize, retrieve and browse this information and tools for knowledge extraction. A very interesting way to organize specific domain information is the topic taxonomy building. Moreover a…

En este trabajo, escrito como un ensayo se persigue explicar la teoría desarrollada por Michel de Certeau, la cual envuelve el problema de la historia y las posibilidades de conocimiento con fundamento en el concepto de “verdad” y creencia. La…

Les mécanismes cellulaires et moléculaires qui sous-tendent la mémoire et l’apprentissage chez les mammifères sont incomplètement compris. Le rythme thêta de l’hippocampe constitue l’état « en ligne » de cette structure qui est cruciale pour la mémoire déclarative. Dans la…

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…

In today’s world, the European Union is searching for a delicate balance between linguistic integration and diversity. Thanks to international knowledge transmission and exchange as well as co-operation and mobility beyond national boundaries, English has now become the preferred option…