La aparición de la teoría de las revoluciones científicas de Thomas S. Kuhn supuso una intensa alteración para la didáctica de las ideas del pensamiento de las ciencias —entre ellas, la geografía—; desde entonces éste se presenta como una sucesión…

L’article presenta l’evolució històrica en l’estudi del fenomen ENSO. Aquest event,
que en principi només semblava produir repercusions destacables a la regió litoral de
Perú i Equador, ha passat a ser considerat como un dels paràmetres més sòlids per
realitzar…

The construction of a teenager population’s citizenship identity is influenced by the cultural and social capital belonging to every student, as well as by two aspects of school organisation. On the one hand, there is an academic contribution motivated by…

Web engineering software development is facing continuous changes in technology implementation. This involves analysts, developers and designers to provide extra effort in the design and maintenance of Web applications in order to adapt them to changes in requirements and implementation…

Recently, existing design methodologies targeting traditional Web applications have been extended for Rich Internet Application modeling support. These extended methodologies currently cover the traditionally well-established design concerns, i.e. data and navigation design, and provide additional focus on user interaction and…

This paper present the structure, function and performance of SPOST, a broad coverage, rule-based part-of-speech tagger developed as a component of the Pagnlyzer Spanish Analysis Component of the Pangloss Knowledge-based Machine Translation System. It also describes preparations for the general…

En materia de aprendizaje virtual, son numerosos los recursos que existen y se
almacenan en repositorios. La tendencia hacia la estandarización de estos almacenes ha
contribuido a mejorar la compartición, búsqueda y recuperación de la información, además de
fomentar la…

Travel writing has been central to the American literary canon. From all possible backgrounds, origins and spaces, religious dissenters, immigrants and others have described their travelling experiences in North America. Within this profoundly American tradition, black Americans’ narratives are a…

PET is a nuclear medical examination which constructs a three-dimensional image of metabolism inside the body; in this article is particular, images are taken from the brain. The high complexity inherent to the interpretation of the brain images makes that…

The NblS-RpaB signalling pathway, the most conserved two-component system in cyanobacteria, regulates photosynthesis and acclimatization to a variety of environmental conditions and is involved in negative regulation of high-light-induced genes. However, relevant regulatory details of the NblS-RpaB signalling pathway remain…