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The Projected Aggregation Methods (PAM) for solving linear systems of equali- ties and/or inequalities, generate a new iterate xk+1 by projecting the current point xk onto a separating hyperplane generated by a given lin...

This thesis, entitled €High Performance Computing for solving large sparse systems. Optical Diffraction Tomography as a case of study€ investigates the computational issues related to the resolution of linear systems o...

In parallel systems, a number of measures of performance are not accurate or representative of their functioning. These measures allow to quantify the benefit of parallelism. Very often, programs are designed and tested ...

Tras la recuperación de un fallo, las aplicaciones pierden prestaciones debido, en gran parte, a que el número planificado de nodos ha disminuido y de la pérdida que provoca la existencia no planificada de procesos co...

Features such as fast response, storage efficiency, fault tolerance and graceful degradation in face of scarce or spurious inputs make neural networks appropriate tools for Intelligent Computer Systems. A neural network ...

Cellular automata provide an abstract model of parallel com- putation that can be effectively used for modeling and simulation of com- plex phenomena and systems. The design and implementation of parallel programming lan...

Parallel genetic algorithms, models and implementations, attempts to exploit the intrinsically parallel nature of genetic algorithms. By distributing the total population, these models ref1ects a bebaviour nearer to that...

Image mining deals with the study and development of new technologies that allow accomplishing this subject. A common mistake about image mining is identifying its scopes and limitations. Clearly it is different from com...

We present P♤, a Stochastic Process Algebra (SPA) that allows for the modeling of timed systems with priorities and urgency. We de ne the semantics of P♤ in terms of Prioritized Stochastic Automata (PSA), an extensio...

A tecnologia de cluster, impulsionada pelo advento de redes de alta velocidade, tem se tornado um importante veículo na otimização de aplicações potencialmente paralelizáveis. Existem diversas formas de melhorar o ...

La creciente cantidad de imágenes transmitidas a través de Internet ha llevado al desarrollo de Sistemas de Minería de Imágenes de propósito general. La performance de un SMI depende en gran medida de una rápida y...

The resource utilization level in open laboratories of several universities has been shown to be very low. Our aim is to take advantage of those idle resources for parallel computation without disturbing the local load. ...

In this paper we present the Shapley Value and Banzhaf-Coleman Index of Power with incompatibilities. There are restrictions that some groups present in formation a coalition. It is the case in many applications when the...

En los últimos tiempos, la comunidad de programación paralela ha trabajado mucho en soluciones basadas en patrones y esqueletos. Un número importante de proyectos han construido sistemas reales, pero ninguno de ellos ...

Every day, new technologies are developed to combine the facilities arranged for shared memory systems with the facilities that provide distributed memory systems. This paper proposes a hybrid system that enables communi...

Actualmente hay gran interés en desarrollo y uso de sistemas distribuidos. En estos, la red de comunicaciones cumple un rol fundamental para su funcionamiento. La complejidad de la puesta a punto (esfuerzo, tiempo y din...

Los recursos computacionales requeridos por la comunidad científica para solucionar problemas son mayores que los ofrecidos por la infraestructura actual. La necesidad de mayores prestaciones se debe al constante progre...

Sistemas de Tempo Real são aqueles sistemas onde a execução correta não depende apenas dos resultados lógicos da computação, mas também do tempo no qual os resultados são produzidos, ou seja, se ocorre dentro do...

Este trabalho estuda as várias formas de integração do paralelismo E e do paralelismo OU na Programação em Lógica. O trabalho engloba os principais sistemas, a saber: ANDORRA-I, ACE, ROPM e IDIOM. Ao final, é feit...

A program for the interactive design of elliptic approximation functions on personal computers 1s presented. The use of non-classical el1iptic functions and arithmetic-geometric iterations results in a substantial reduct...

A variety of optimization problems in fields such as production operations in manufacturing industry, parallel and distributed systems, logistics and traffic can be summarized within the general class of scheduling probl...

Evolutionary Computation (EC) have been applied to a great number of optimisation problems with some success, specially in fields such as production operations in manufacturing industry, parallel and distributed systems,...

This work presents the application of parallel computing techniques using Graphic Processing Units to improve the effciency of scheduling heuristics for heterogeneous computing systems. The experimental evaluation of the...

Software modularization presents important advantages when it comes to robotic development. That is based on the definition of well-known limits for each module that make the parallel development easier. Furthermore, th...