2007

BACKGROUND:Phylogenetic analyses based on datasets rich in both genes and species (phylogenomics) are becoming a standard approach to resolve evolutionary questions. However, several difficulties are associated with the assembly of large datasets, such as multiple copies of a gene per…

2007

This paper describes an adaptive and autocalibrated method to track surfaces. To do so, a non time
dependent impedance control system is proposed. This method fuses visual and force information to track a
given trajectory maintaining the contact with the…

Knowledge of the distribution of soil organic matter (SOM) fractions is important in managing soils toward a sustainable agricultural system ina tropical environment, However, data on Histosols in limited. This study developed 19 regions of Brazil. Soil organic matter was…

In this article we present a generalized dynamic argumentation framework that handles arguments expressed in an abstract language assumed to be some first order logic fragment. Once the formalism is presented, we propose a reification to the description logic ALC…

Este artículo presenta una propuesta de Geografía del Clima, que se contrapone a la
noción de una Climatología Geográfica. Por lo tanto, volviendo a los inicios de la Climatología
en Brasil, se ha buscado establecer las bases conceptuales de la…

Los impactos ecológicos de las especies introducidas constituyen uno de los aspectos menos investigados de la ecología de las
invasiones, especialmente en Europa. La mayor parte de los estudios realizados se han restringido a especies que tienen un impacto
económico…

ABSTRACT: Despite of all modem communications tools, difficulties of dialogue still exist between technicians and local community members when dealing with natural resources. This is related to many factors, from the predominantly technical formation of the teachers and researches to…

ABSTRACT: The paper presents the experience acquired through the use of an internet portal as a divulgation media and to support the Information Management (UM) for the project "Brazilian Rocks as Alternative Sources of Potassium". It's described the portal creation,…