Instruction may be seen as the intentional creation of conditions around learning so as to facilitate the achievement of determined goals. Normally, instruction is based upon certain educational strategies. It is well accepted in the field of educational technology that…

Las listas de palabras con sus frecuencias se usan ampliamente en muchos procedimientos de agrupamiento y categorización de textos. Usualmente para la compilación de tales listas se usan las aproximaciones basadas en morfología (como el stemmer de Porter) para unir…

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…

This paper focuses on the general problem of the lexical bottleneck and, in particular, on the issues of semantic clustering and disambiguation by means of word usage cues obtained from sublanguage-specific corpora. Our approaches combines the use of numerical techniques…

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…

La asignación de unas categorías de desvalorización hacia profesiones relacionadas con el cuidar debido a la reproducción de tareas tradicionalmente desarrolladas en el ámbito privado y doméstico, tiene que ver con la configuración de un orden social masculino, que ha…

Artículo colectivo sobre qué entendemos por "constructivismo" en enseñanza de las ciencias., In this paper we analyse some of the criticisms that are being made to the «constructivist paradigm» and their
implications on the development of the didactic of the…

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…

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…