The asymmetry in heart rate variability is a visibly obvious phenomenon in the Poincaré plot of normal sinus rhythm. It shows the unevenness in the distribution of points above and below the line of identity, which indicates instantaneous changes in the beat to beat heart rate. The major limitation of the existing asymmetry definition is that it considers only the instantaneous changes in the b...

<p>This study aimed to propose a method predict yarn unevenness grounded on the generalized regression neural network and traditional model further improve prediction accuracy. The was constructed. Under this model, three-layer network, four-layer five-layer were designed. Finally, Python used for training simulation. parameters three models data made consistent ensure comparability of re...

In this article, the authors reproduce gloss unevenness on a paper surface by expanding the Torrance–Sparrow model, which is based on the measurement and analysis of mesoscopic facets on paper. As the conventional Torrance–Sparrow model only considers macroscopic and microscopic facets, the authors expand the model to be able to consider mesoscopic facets. The normal vectors of mesoscopic facet...

In recent years, the use of imaging sensors that produce a three-dimensional representation of the environment has become an efficient solution to increase the degree of perception of autonomous mobile robots. Accurate and dense 3D point clouds can be generated from traditional stereo systems and laser scanners or from the new generation of RGB-D cameras, representing a versatile, reliable and ...