http://popups.lib.uliege.be/1373-5411/index.php?id=334 Publications of Auteurs Jean Bonnardot fr 0 http://popups.lib.uliege.be/1373-5411/index.php?id=370 Working on the pre-attentive stage of perception by the human visual system (HVS), we propose both a modelling of chromatic perception (l) by means of 4 attactors associated to a mathematical symbolism induced by branching theory, and some structures for the shapes -or coloured shapes- processing. This research involved by the computer graphics and neurophysiology results about recognition of optical signal processing circuits have necessitated to reinvest the visual chain : object (emitter or re-emitter), light information vehicle, the colour receiver, the processors of the SVH. The local physico-mathematical formula set very developed about propagation, has brought solutions for monochromatic waves and for obstacle with smooth edge reveal neither various curvatures (2) nor a fortiori the texture of reemitting object U(3). A resort to a formula-set about interaction matter radiation, extended to a systemic approach,give an algorithmic stage to take account the spatial character (2) and (3). Taking account on one side this scalar conjecture about visual information, and on another side a retinal functional specialisation, we propose a modelling of C occluding edge detection of 3D-object. C except in isolated points by envelop method. The elaboration of a valuation table of morphemes associating the mathematical characteristics of curves with their pregnance treat the more cognitive stage of processing associating edge and colour. Some pictures illustrate the abilities of curves family to suggest 3D-shape. The chromaticity of delimited areas strengthen, or rather create, psycho-affective suggests associated to logos. Wed, 26 Jun 2024 12:17:09 +0200 Fri, 28 Jun 2024 16:58:54 +0200 http://popups.lib.uliege.be/1373-5411/index.php?id=370 http://popups.lib.uliege.be/1373-5411/index.php?id=324 In epidemiology (or in biology of populations), an usual process consists in building up local parametrized models, which analysis permits to derive some noteworthy states by weighting speeds of dynamics. The potential existence of complex structures with several chaotic evolution schemes leads to a macroscopical approach by means of non linear dynamic systems. Provided that one calculates different types of means according to some protocols which can be only based on the underlying micro-structures, a way of resolving by the use of multiple scales is efficient. The direct micro bottom-up processing, by means of distribution functions, leads to some relations which are very interesting for physics of collisions, but it doesn't permit to satisfy macroscopic scale constraints, even after successive integrations. We quote pressure as an example. Fri, 21 Jun 2024 14:48:29 +0200 Fri, 21 Jun 2024 14:48:38 +0200 http://popups.lib.uliege.be/1373-5411/index.php?id=324