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Respiratory disorders in premature are outlined as one of the major causes of newborn morbidity. Therefore, estimation in utero of the risk that a particular newborn will present respiratory distress syndrome is critical in perinatal medicine. Fetal lung maturity assessment by non-invasive methods is an unsolved problem since 80's. There has been a significant effort reporting that ultrasound images...
The aim of this study was to evaluate the respiratory muscles efficiency during a progressive incremental flow (IF) respiratory test in healthy and Chronic Obstructive Pulmonary Disease (COPD) subjects. To achieve this, the relationship between mouth Inspiratory Pressure (IP) increment, which is a measure of the force produced by respiratory muscles, and respiratory muscular activity increment, evaluated...
Interpolation of nonuniformly sampled signals in the presence of noise is a hard and deeply analyzed problem. On the one hand, classical approaches like the Wiener filter use the second order statistics of the signal, and hence its spectrum, as a priori knowledge for finding the solution. On the other hand, Support Vector Machines (SVM) with Gaussian and sinc Mercer kernels have been previously proposed...
In this paper, a vision-based system to detect the eyelid closure for driver alertness monitoring is presented. Similarity measures with three eye templates (open, nearly close, and close) were calculated from many different features, such as 1-D and 2-D histograms and horizontal and vertical projections, of a big set of rectangular eyes images. Two classifiers, Multi-Layer Perceptron and Support...
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