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Using a spectroradiometric model of capture for a digital camera based on the mathematical description of the empirical opto-electronic conversion spectral functions (OECSF), the capture of MacAdam or optimal spectra with fixed illumination level is simulated. This model of capture allows to change freely the f-number of the zoom-lens and/or the photosite integration time of the electronic shutter of the camera, regardless of the spectral composition of the stimulus. If we follow the procedure employed by MacAdam in 1935 working with the CIE-1931 XYZ standard observer, these color-stimuli are arranged in decreasing pyramidal form as the luminance factor increases for any chromaticity diagram (CIE-xy, UCS-u'v' or CIE-L*a*b*). These loci are often called MacAdam limits or Rösch color solid. On the other hand, transforming t...
Como paso previo a la publicación de la cuarta edición del Manual para la determinación de la flora valenciana, que se encuentra en fase de edición, en la presente contribución se discute la identidad y valor taxonómico de algunas plantas iberolevantinas presentes en la Comunidad Valenciana. Como resultado se proponen cinco combinaciones nuevas, un nombre nuevo y se describen dos especies y una notospecie nuevas; asimismo se designan dos lectótipos. Para todas ellas se comentan aspectos nomenclaturales, taxonómicos, ecológicos y corológicos.
Essential to an audience driven website design philosophy is the organization of information and functionality according to the requirements of the different audience classes. However, at design time, it is often difficult to correctly assess the different needs and requirements of the different prospective users of a website. This may result in a non-optimal navigation structure, which will decrease the usability of the website. In this paper, we describe how to correct, at run-time and automatically, possible flaws in the design resulting from incomplete requirement assessment, using adaptive behavior. By observing the browsing behavior of the users, the requirements for the different users are validated and the website is adapted according to adaptation specifications made by the designer. These specifications express when and how t...
Conferencia de Rafael Alberti sobre el golpe de Estado en Chile dedica poemas a Salvador Allende, Pablo Neruda y Pablo Picasso