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Many people suffer from language disorders that affect their communicative capabilities. Augmentative and alternative communication devices assist learning process through graphical representation of common words. In this article, we present a complete text-to-pictogram system able to simplify complex texts and ease its comprehension with pictograms. Numerosas personas padecen trastornos del habla que merman su capacidad de comunicación. Su proceso de aprendizaje se apoya en el uso de dispositivos para la comunicación aumentativa y alternativa con símbolos gráficos. En este artículo presentamos un sistema texto-a-pictograma completo, capaz de simplificar textos complejos y facilitar su comprensión con pictogramas. This work has been supported by the Spanish Government through project TIN2017-85854-C4-1-R and by the European Union's FP7 Marie Curie action, IAPP under grant agreement no.610986.

The extraction of Na+, Ni2+, and Cr3+ using six different membranes made of polyaniline composited with high-impact polystyrene, which differ in the doping agent and/or the preparation method, has been investigated. The swelling and ion-exchange capacities of the six polyaniline composited with high-impact polysterene (HIPS/PAni) membranes have been determined and compared with that of the commercial Selemion membrane. Electrodialysis tests using a five-compartment cell evidenced that the extraction of ions depends on the electronic structure of the SO3 - groups, which is modulated by the doping agent, and on both microstructure and electrical resistance of the membrane, which are regulated by the preparation method. The transport of ions through HIPS/PAni and Selemion membranes was found to be comparable. Quantum mechanical calculations on model complexes have been performed to characterize the electronic structure of the dopants. Results indicate that the strength of the interaction between the different doping agents and the polyaniline is inversely proportional to the concentration of negative charge in the SO3 - group of the former. Moreover, both the binding energy and the distribution of charges calculated for dopant · · · PAni complexes have been compared with those predicted for dopant · · · metallic ion complexes.

An algorithm for nonuniform speech segmentation and its application in speech recognition systems is presented. A method based on the Modulated Gaussian Wavelet Transform based Speech Analyser (MGWTSA) and the subsequent parametrization block is used to transform a uniform signal into a set of nonuniformly separated frames, with the accurate information being fed into a speech recognition system. The algorithm needs a frame characterizing the signal where necessary, trying to reduce the number of frames per signal as much as possible, without an appreciable reduction in the recognition rate of the system.

This paper describes the phonetic content of Albayzin, a spoken database for Spanish designed for speech recognition purposes. A statistical study of a large sample of spontaneous speech is presented, and the phonetic and statistical criteria for the final constitution of the database are discussed. Finally, the contents of the phonetic database are analyzed