The mitral-aortic intervalvular fibrosa of the heart is of great clinical and surgical importance, because of its involvement in the anatomical and functional integrity of these two valves. In this work, we examined the morphology of the mitralaortic intervalvular fibrosa and its relationship to the mitral and aortic valves. Thirty formaldehyde-fixed adult human hearts of both sexes were dissec...

The energy spectrum of Klein-Gordon particles is obtained via the non-minimal coupling of Klein-Gordon fields to Cartan torsion in the approximation of Riemann-flatness and constant torsion.When the mass squared is proportional to torsion coupling constant it is shown that the splitting of energy does not occur.I consider that only the vector part of torsion does not vanish and that it is const...

Self-organizing topographic maps have found many applications as systems capable of unsupervised learning. They are based on the competitive learning algorithm applied to lowdimensional (in practice one, two or three-dimensional) structure of artificial neurons. The iterative algorithm used for competitive learning converges slowly and is computationally very intensive. In this paper direct map...

El estudio del infinito en matemática educativa desde una perspectiva cognitiva se ha centrado analizar el potencial y actual. A partir de la teoría APOE (Acción, Proceso, Objeto, Esquema), esta noción explicado términos procesos iterativos infinitos objetos trascendentes, respectivamente. En este artículo presenta descomposición genética, que sustenta diseño dos problemas relacionados con rect...

An algorithm for estimating reliable and accurate depth maps from stereoscopic image pairs is presented, which is based on block–matching techniques for disparity estimation. By taking neighboring disparity values into account, reliability and accuracy of the estimated disparity values are increased and the corona effect at disparity discontinuities is avoided. An interpolation of disparity val...