Documents de Congressos: Envíos recientes
Mostrando ítems 101-120 de 174
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Speech Enhancement: A Multivariate Empirical Mode Decomposition Approach
(2013)Speech signals in real scenario ambient are usually mixed with some other signals, such as noise. This may interfere with posterior signal processing applied to the signals. In this work, a new technique ... -
Feature extraction approach based on fractal dimension for spontaneous speech modelling oriented to alzheimer disease diagnosis
(2013)Alzheimer's disease (AD) is the most prevalent form of progressive degenerative dementia; it has a high socio-economic impact in Western countries. The purpose of our project is to contribute to earlier ... -
Automatic detection of laryngeal pathologies in running speech based on the HMM transformation of the nonlinear dynamics
(2013)This work describes a novel system for characterizing Laryngeal Pathologies using nonlinear dynamics, considering different complexity measures that are mainly based on the analysis of the time delay ... -
Towards a low-complex breathing monitoring system based on acoustic signals
(2013)Monitoring the breathing is required in many applications of medical and health fields, but it can be used also in new game applications, for example. In this work, an automatic system for monitoring ... -
Juegos digitales en las aulas Catalanas: El punto de vista de los profesores
(2013)This paper explains the work that we have been doing related with what teacher think about digital games in the classroom. The main objective is to discover and understand why Catalan teachers in ... -
EEG signal analysis via a cleaning procedure based on multivariate empirical mode decomposition
(2012)Artifacts are present in most of the electroencephalography (EEG) recordings, making it difficult to interpret or analyze the data. In this paper a cleaning procedure based on a multivariate extension ... -
Alzheimer disease diagnosis based on automatic spontaneous speech analysis
(2012)Alzheimer’s disease (AD) is the most prevalent form of progressive degenerative dementia and it has a high socio-economic impact in Western countries, therefore is one of the most active research areas ... -
What determines the wavelength of self-organized shoreline sand waves?
(2012)Shoreline undulations extending into the bathymetric contours with a length scale larger than that of the rhythmic surf zone bars are referred to as shoreline sand waves. Many observed undulations along ... -
Sectoral and occupational employment growth in Spain 1995-2005
(2013-10-11)Between 1995 and 2005, the Spanish economy grew at an annual average rate higher than 3,5%. Total employment increased by more than 4.9 millions. Most of this growth was in occupations related with ... -
Empirical mode decomposition-based face recognition system
(2013)In this work we explore the multivariate empirical mode decomposition combined with a Neural Network classifier as technique for face recognition tasks. Images are simultaneously decomposed by means ... -
Parameterization of written signatures based on EFD
(2013)In this work we propose a method to quantify written signatures from digitalized images based on the use of Elliptical Fourier Descriptors (EFD). As usually signatures are not represented as a closed ... -
Differences of Functional Connectivity Brain Network in Emotional Judgment
(2013)Using combined emotional stimuli, combining photos of faces and recording of voices, we investigated the neural dynamics of emotional judgment using scalp EEG recordings. Stimuli could be either combioned ... -
2-Dimensional invariant tori for the spatial isosceles 3-body problem
(2000)We consider the circular Sitnikov problem as a special case of the restricted spatial isosceles 3-body problem. In appropriate coordinates we show the existence of 2-dimensional invariant tori that are ... -
Un clàsic del feminisme en català : la mística de la feminitat de Betty Friedan
(2013)El 1965, dos anys després de la publicació als Estats Units de The Feminine Mystique de Betty Friedan, Edicions 62 en publicava la traducció catalana – La mística de la feminitat – a cura de Jordi ... -
Blind Inversion of Wiener Systems
(1999)A system in which a linear dynamic part is followed by a non linear memoryless distortion a Wiener system is blindly inverted This kind of systems can be modelised as a postnonlinear mixture and ... -
Investigation of ICA algorithms for feature extraction of EEG signals in discrimination of Alzheimer disease
(2008)In this paper we present a quantitative comparisons of different independent component analysis (ICA) algorithms in order to investigate their potential use in preprocessing (such as noise reduction ... -
Coherency and sharpness measures by using ICA algorithms. An investigation for Alzheimer’s disease discrimination
(2009)In this paper, we present a comprehensive study of different Independent Component Analysis (ICA) algorithms for the calculation of coherency and sharpness of electroencephalogram (EEG) signals, in ... -
Automatic Recognition of Leaves by Shape Detection Pre-Processing with Ica
(2009)In this work we present a simulation of a recognition process with perimeter characterization of a simple plant leaves as a unique discriminating parameter. Data coding allowing for independence of ... -
Improving a leaves automatic recognition process using PCA
(2009)In this work we present a simulation of a recognition process with perimeter characterization of a simple plant leaves as a unique discriminating parameter. Data coding allowing for independence of ... -
Blind channel deconvolution of real world signals using source separation techniques
(2005)In this paper we present a method for blind deconvolution of linear channels based on source separation techniques, for real word signals. This technique applied to blind deconvolution problems is ...