La emigración cualificada española en Francia y Alemania

A pesar del interés que despierta el fenómeno de las migraciones cualificadas, es difícil encontrar datos que permitan realizar un análisis detallado de los factores que condicionan la movilidad. El caso español constituye un ejemplo de la modificación cualitativa en la composición de las migraciones de sur a norte en Europa tras el ingreso en la Comunidad Económica Europea. No se produjeron migraciones masivas de trabajadores sin cualificación; sin embargo, sí se alteró drásticamente su composición: la migración no cualificada fue sustituida por migración cualificada de España a Alemania y Francia. Esta migración queda ocultada por la llegada masiva de inmigrantes a España. Empleando los datos de la encuesta EIMSS, se analizan las diferencias de las condiciones de egreso y movilidad entre los dos tipos de migrantes, cualificados y no cualificados.

Effects of high-color-discrimination capability spectra on color-deficient vision

Light sources with three spectral bands in specific spectral positions are known to have high-color-discrimination capability. W. A. Thornton hypothesized that they may also enhance color discrimination for color-deficient observers. This hypothesis was tested here by comparing the Rösch–MacAdam color volume for color-deficient observers rendered by three of these singular spectra, two reported previously and one derived in this paper by maximization of the Rösch–MacAdam color solid. It was found that all illuminants tested enhance discriminability for deuteranomalous observers, but their impact on other congenital deficiencies was variable. The best illuminant was the one derived here, as it was clearly advantageous for the two red–green anomalies and for tritanopes and almost neutral for red–green dichromats. We conclude that three-band spectra with high-color-discrimination capability for normal observers do not necessarily produce comparable enhancements for color-deficient observers, but suitable spectral optimization clearly enhances the vision of the color deficient.

High-speed video-oculography applied to assess pupil light reflex

Póster presentado en el VII European/ I World Meeting in Visual and Physiological Optics

PoS-tagging the Web in Portuguese. National varieties, text typologies and spelling systems

The great amount of text produced every day in the Web turned it as one of the main sources for obtaining linguistic corpora, that are further analyzed with Natural Language Processing techniques. On a global scale, languages such as Portuguese - official in 9 countries - appear on the Web in several varieties, with lexical, morphological and syntactic (among others) differences. Besides, a unified spelling system for Portuguese has been recently approved, and its implementation process has already started in some countries. However, it will last several years, so different varieties and spelling systems coexist. Since PoS-taggers for Portuguese are specifically built for a particular variety, this work analyzes different training corpora and lexica combinations aimed at building a model with high-precision annotation in several varieties and spelling systems of this language. Moreover, this paper presents different dictionaries of the new orthography (Spelling Agreement) as well as a new freely available testing corpus, containing different varieties and textual typologies.