Documents de Congressos: Enviaments recents
Ara mostrant els elements 121-140 de 174
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Initialisation of Nonlinearities for PNL and Wiener systems Inversion
(2003)This paper proposes a very fast method for blindly initial- izing a nonlinear mapping which transforms a sum of random variables. The method provides a surprisingly good approximation even when ... -
Post-Nonlinear Mixtures and Beyond
(2004)Although sources in general nonlinear mixturm arc not separable iising only statistical independence, a special and realistic case of nonlinear mixtnres, the post nonlinear (PNL) mixture is separable ... -
A Canonical Genetic Algorithm for Blind Inversion of Linear Channels
(2006)It is well known the relationship between source separation and blind deconvolution: If a filtered version of an unknown i.i.d. signal is observed, temporal independence between samples can be used ... -
A Robust Multiple Feature Approach To Endpoint Detection In Car Environment Based On Advanced Classifiers
(2005)In this paper we propose an endpoint detection system based on the use of several features extracted from each speech frame, followed by a robust classifier (i.e Adaboost and Bagging of decision trees, ... -
Integrative analysis of the Regulatory Region of the FGFR3 Oncogene
(2011)The study of transcriptional regulation often needs the integration of diverse yet independent data. In the present work, sequence conservation, predic-tion of transcription factor binding sites (TFBS) ... -
A(-infinity)-interpolation in the ball
(1998)We give a necessary and sufficient condition for a sequence [ak}k in the unit ball of C° to be interpolating for the class A~°° of holomorphic functions with polynomial growth. The condition, which ... -
Browsing a component library using Non-functional Information
(1999)This paper highlights the role of non-functional information when reusing from a component library. We describe a method for selecting appropriate implementations of Ada packages taking non-functional ... -
Applications of Cumulants in Speech Processing
(2010)This paper analyzes applications of cumulant analysis in speech processing. The main focus is made on an integral representation for cUl1luJants using integrals involving cyclic products of kernels. ... -
Score Function for Voice Activity Detection
(2010)In this paper we explore the use of non-linear transformations in order to improve the performance of an entropy based voice activity detector (VAD). The idea of using a non-linear transformation comes ... -
Coding of Biosignals Using the Discrete Wavelet Decomposition
(2010)Abstract. Wavelet derived codification techniques are widespread used in image codifiers. The wavelet based compression methods are adequate for representing transients. In this paper we explore the ... -
Mathematical Morphology Preprocessing to Mitigate AWGN Effects: Improving Pitch Tracking Performance in Hard Noise Conditions
(2010)Abstract. In this paper we show how a nonlinear preprocessing of speech signal -with high noise- based on morphological filters improves the performance of robust algorithms for pitch tracking (RAPT). ... -
Implementation of a Channel Equalizer for OFDM Wireless LANs
(2004)This paper presents an implementation of a channel equalizer for a wireless OFDM according to the IEEE 802.11a and Hiperlan/2 standard. In order to implement the equalizer, algorithms of low computational ... -
IFFTIFFT core architecture with an identical stage structure for wireless LAN communications
(2004)Abstrac(- This paper shows the design of the IFFT module corresponding to the baseband processing of an OFDM transmitter according to the IEEE802.11a-g and Hiperlan/2 standard. This module will be ... -
Image Processing to Detect and Classify Situations and States of Elderly People
(2011)Abstract. Monitoring and tracking of elderly people using vision algorithms is an strategy gaining relevance to detect anomalous and potentially dangerous situations and react immediately. In general ... -
A recursive approach to Multiscalar Data Interpolation of sparsely sampled sea surface measurements at different spatial resolutions
(2008)Abstract- In many oceanographic studies there is a need to reconstruct a signal from a set of sparse measurements. We propose an algorithm to iteratively approximate the intermediate values between ... -
A fast OFDM-CDMA user demultiplexing architecture
(2000)A fast algorithm based on a butterfly structure is presented that demultiplexes the symbols of a particular type of MC-MA (Multi-Carrier Multiple-Access) modulation previously proposed for indoor ... -
Creation of video games as a cognitive resource in the framework of Participatory Action Research Case Study: The Videogame Miquel Crusafont
(2012)The case study described below, is an example of the application of the Participatory Action Research in the use of videogames as cognitive resource. The game Miquel Crusafont (part of the Personatges ... -
Video games as a cognitive resource. Case study: video game "Joan de Peratallada"
(2011)Recently the video games, have become recognized as rich learning contents for students, because the students can improve they cognitive development. In this paper we explore the cognitive opportunities ... -
Usando um Jogo Digital na Sala de Aula do Ensino Fundamental: Visão dos Professores
(2012)A digital game was created as a resource for cognitive learning and afterwards it was used in primary schools in order to survey its active users. The methods used to recollect data were observation, ... -
Consumo y convergencia mediática de la prensa local en Cataluña
(2012-11)Los nuevos hábitos de consumo de medios en el marco de la convergencia digital están propiciando un cambio en las estrategias de los medios de comunicación. Mientras unos usuarios siguen prefiriendo la ...