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Molecular Dynamics (MD) simulations can help to utimingnderstand an immense number of phenomena at the nano and microscale. They often require the exploration of large parameter space, and a possible parallelization str...

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...

Los clusters forman una plataforma fundamental para el c omputo paralelo. La prolif- eraci on de estos sistemas desde el gran impulso dado por Beowulf a aumentado d a a d a. Hoy llegan a estar en los primeros diez del...

In this paper, metrics regarding different architectures for distributed arithmetic based FIR filters in FPGA are presented. Main filter parameters are described as well as diverse design techniques applied: pipelining, ...

We are given a nite set of jobs of equal processing times with readiness times and tails and a set of identical processors. The aim is to schedule the given set of jobs on the given set of processors to minimize the tot...

The design of parallel programs requires fancy solutions that are not present in sequential programming. Thus, a designer of parallel applications is concerned with the problem of ensuring the correct behavior of all the...

Data parallelislm is one of the more successful efforts to introduce explicit parallelism to high level programming languages. This approach is taken because many useful computations can be framed in term of a set of ind...

Consider us the problem of time-varying parameter estimation. The most immediate and simple idea is to include a discounting procedure in an estimation algorithm i.e., a procedure for discarding (forgetting) old informat...

Contrasting with conventional approaches to crossover, Multiple Crossover Per Couple (MCPC) is an alternative, recently proposed [1], approach under which more than one crossover operation for each mating pair is allowed...

Este trabalho apresenta um estudo sobre a aplicação da técnica de descrição formal LOTOS na concepção formal de um sistema para gerência de redes denominado Gateway CMIP-SNMP. São apresentados os resultados obti...

Los sistemas de DSM por software sobre clusters de workstations constituyen una alternativa interesante para el procesamiento paralelo, gracias a su gran potencial para la escalabilidad y excelente relaci on costo/perfor...

El trabajo presenta y describe una propuesta para la definición de un sistema automatizado que permita generar mediciones de un campo lejano. Se entiende por campo lejano a la región del campo de una antena en la cual ...

Este trabalho analisa as dependências de controle em arquiteturas Super Escalares. Neste contexto, este trabalho avalia as limita cões fundamentais do desempenho de processadores pipeline e superescalares dando ênfase...

Este trabalho apresenta um mecanismo e algoritmo para criar checkpoints e au mentar a con abilidade de DPC O mecanismo proposto permite a cria c ao de checkpoints distribu dos e a recupera c ao de objetos DPC na oc...

Modern computers present a big gap between peak performance and sustained performance. There are many reasons for this situation, but mainly involving an inefficient usage of computational resources. Nowadays the memory ...

O projeto da rede corporativa de uma empresa requer que sejam bem conhecidas as características, necessidades e tendências de evolução do seu ambiente de informática, as tecnologias e tipos de equipamentos de rede d...

In this paper two images compression techniques with loss based on the method used by the compression Standard Joint Photographic Experts Groups (JPEG) and on the Quadtree adaptive partitioning method are presented and c...

The Rijndael cipher, designed by Joan Daemen and Vincent Rijmen and recently selected as the official Advanced Encryption Standard (AES) is well suited for hardware use. This implementation can be carried out through sev...

Statistical Bit Rate (SBR) ATM capability is considered a good option for supporting Variable Bit Rate (VBR) services. However, its study is somewhat in lag compared with Deterministic Bit Rate (DBR) or Available Bit Rat...

The problem of selecting a basis within a redundant tree structure naturally arises in the frameworks of wavelet packet transform (WPT) and cosine packet transform (CPT) for signal representation. The "actual" tree has ...

VHDL is a versatile high level language for the specification and simulation of hardware components. Here a functional VHDL model is presented for performing fast convolution based on Mersenne's number theoretic transfor...

Se analiza la extensión de un simulador DSP TMS320C3x para poder estudiar el comportamiento de una arquitectura multi-DSP basada en el mismo procesador. Este trabajo forma parte de un proyecto conjunto en el desarrollo ...

The interest in indexing and querying video data is growing rapidly. Desktop video is a new and attractive medium for communication between people using computers and networks. The main focus in any video information sys...

Com o rápido crescimento da Internet tanto em termos do número de máquinas conectadas quanto ao número e tipo de serviços oferecidos, as preocupações envolvendo segurança têm se tornado um tema chave para os pro...