Detrás de la actual crisis ambiental está nuestra limitada comprensión de los procesos ecológicos y sociales que operan a escalas espacio-temporales amplias. Esta falta de conocimiento ha desencadenado fallos en los esquemas de manejo y utilización de los servicios y…

Sierra Nevada es uno de los centros más importantes de diversidad ecológica y endemicidad de Europa, y constituye por ello un observatorio excepcional para estudiar el funcionamiento de sistemas y procesos naturales en un contexto de cambio global. Con vocación…

Este ensayo sitúa y caracteriza las teorías holistas del Derecho, y trata de dar respuesta a las críticas más comúnmente dirigidas contra ellas. Las teorías holistas se presentan como teorías de la justificación según las cuales la conclusión de un…

Heterogeneous azeotropic distillation is a widely used technique to separate binary azeotropic mixtures into their components. One of its most important applications is the dehydration of ethanol, which is blended with gasoline to obtain automobile fuel. Among all the compounds…

Design and optimization of distillation columns for ethanol dehydration, using a hydrocarbon as entrainer, implies a good knowledge of vapor-liquid (VLE), liquid-liquid (LLE) and vapor-liquid-liquid equilibrium (VLLE). Chemical process simulation programs always require the use of a thermodynamic model that…

Data mining is at the core of the knowledge discovery process. However, an initial preprocessing step is crucial for assuring reliable results within this process. Preprocessing of data is a time-consuming and non-trivial task since data quality issues should be…

Most Natural Language Processing (NLP) systems traditionally use a sequential architecture that represents the classical linguistic levels (lexical-morphological, syntactical, semantic, etc.), but they claim for huge and monolithic modules, that make the backtracking among such modules difficult. By using a…

The Answer Validation Exercise (AVE) is a pilot track within the Cross-Language Evaluation Forum (CLEF) 2006. The AVE competition provides an evaluation frame-
work for answer validations in Question Answering (QA). In our participation in AVE, we propose a system…

Scientific knowledge and skills acquired by students during pre-university education has diminished since legislative changes were introduced in Spain during the 1990's. As a result, education in the field of science is suffering. Some initiatives are currently underway in Great…

En este artículo se intenta analizar el fragmento de Polibio concerniente a los acontecimientos
de Cíos del año 202, tratando de incardinar los hechos dentro del contexto histórico
general del momento y entre los objetivos centrales trazados por Filipo V…