This article presents the confluence of two general ideas: Defeasible Logic Programming (DeLP, an argumentation based formalism for representing knowledge and reasoning) and Abduction in logic. In first place, we introduce a framework that formally states the problem of doing…

In this paper, the two-dimensional strip packing problem with 3-stage level patterns is tackled using genetic algorithms (GAs). We evaluate the usefulness of a greedy seeding procedure for creating the initial population, incorporating problem knowledge. This is motivated by the…

Evolutionary algorithms (EAs) are merely blind search algorithms, which only make use of the relative fitness of solutions, but completely ignore the nature of the problem. Their performance can be improved by using new multirecombinative approaches, which provide a good…

The present article introduces a five-valued logic and a deductive system. Here, the logic presented is a relevant fragment of the @-logic, which is also a space-time logic. These five values correspond to the following semantics: unknown, possibly known but…

Se evalúa el estado de conservación de la fauna de Sauria y Amphisbaenia del Uruguay, basado en el índice propuesto por Reca et al. (1994), y se aplican las categorías propuestas por Ávila et al. (2000). Se analizaron en total…

Con la finalidad de resolver problemas inherentes a la administración de medicamentos, se llevó a cabo un Curso de "Administración de Medicamentos" en el Hospital Universitario "Hospital de Clínicas José de San Martín" en Noviembre de 2001. Los talleres aportaron…

Como o uso de plantas medicinais tem se popularizado, sendo comum sua utilização como
complemento aos tratamentos convencionais, a falta de conhecimento sobre interações entre fármacos e
plantas medicinais põem em risco a saúde dos usuários. Neste artigo é apresentada…

Doenças tropicais afetam centenas de milhões de pessoas impedindo o desenvolvimento social e econômico nos países mais pobres. Ferramentas (por exemplo drogas, vacinas, diagnósticos) e estratégias para controlar as doenças tropicais freqüentemente não surtem efeitos devido a dificuldades na implementação…

Tardigrades constitute one of three clades of Xenarthra. Whereas modern tree sloths are common in the Amazonian Basin, their giant ground sloth "kin" were abundant throughout the Americas. During the Miocene, sloths were conspicuous faunal elements in Patagonia, generally considered…

Recent contributions to the knowledge of Gondwanan cynodonts highlight the presence in Africa of taxa previously recognized in South America and vice-versa. This is the case for the Middle Triassic Namibian fauna from the upper Omingonde Formation, where the first…