Rubén Alonso

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This paper presents a parallel architecture for the solution of linear equations based on the Division Free Gaussian Elimination Method is presented.This architecture can handle single and double data that follows the IEEE standard 754 for floating-point data. Also, it can be implemented in a FPGA Spartan 3 of Xilinx. The mathematical algorithm is(More)
Service oriented architecture (SOA) is becoming a standard de facto and a solution for defining interoperable architectures. Web Services (WS) platform is one of the most widely accepted implementations of this kind of service architectures. In this context there is a huge amount of specifications for a broad range of topics. This paper is focused on the(More)
This paper describes a free software tool (VARVI) developed in our research group to facilitate the analysis of heart rate variability (HRV) in response to different visual stimuli. uliThis tool was developed after the realization that this type of studies are becoming to be used in fields such as psychiatry, psychology and marketing and that there are no(More)
OBJECTIVE Self-perceived class results from directly questioning subjects about his or her social class. The aim of this investigation was to analyse self-perceived class in relation to other indicator variables of socioeconomic level. METHODS Data from the 1994 Catalan Health Interview Survey, a cross-sectional survey of a representative sample of the(More)
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