Browsing by Author "Sousa, Duarte"
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- Contributos para uma reflexão sobre o desporto escolarPublication . Prudente, João; Lopes, Helder; Fernando, Catarina; Sousa, DuarteA participação dos jovens no desporto, tanto a nível Regional como nacional, é baixa e tem levado alguns investigadores a interrogarem-se pelas razões que levam a esta realidade, tanto na escola como fora dela. Neste trabalho procuramos uma reflexão sobre a realidade escolar, tanto ao nível das oportunidades de participação desportiva oferecidas pela escola, como ao nível da qualidade da oferta, de modo a percebermos as barreiras que impedem uma significativa maioria de jovens de aderirem a uma participação efetiva ao Desporto na Escola.
- A review of velocity-type PSO variantsPublication . Sousa-Ferreira, Ivo; Sousa, DuarteThis paper presents a review of the particular variants of particle swarm optimization, based on the velocity-type class. The original particle swarm optimization algorithm was developed as an unconstrained optimization technique, which lacks a model that is able to handle constrained optimization problems. The particle swarm optimization and its inapplicability in constrained optimization problems are solved using the dynamic-objective constraint-handling method. The dynamic-objective constraint-handling method is originally developed for two variants of the basic particle swarm optimization, namely restricted velocity particle swarm optimization and self-adaptive velocity particle swarm optimization. Also on the subject velocity-type class, a review of three other variants is given, specifically: (1) vertical particle swarm optimization; (2) velocity limited particle swarm optimization; and (3) particle swarm optimization with scape velocity. These velocity-type particle swarm optimization variants all have in common a velocity parameter which determines the direction/movements of the particles.