Encontrados 6 documentos, a visualizar página 1 de 1
Ocorrência de Entamoeba histolytica/Entamoeba dispar em pacientes ambulatoriais...
Dourado,Antônio; Maciel,Amélia; Aca,Ivanize da SilvaEste trabalho teve como objetivo determinar a ocorrência das espécies Entamoeba histolytica/Entamoeba dispar em amostras clínicas de pacientes ambulatoriais de Pernambuco. Neste estudo, foi utilizado o teste imunoenzimático específico para Entamoeba histolytica, que entre os 213 pacientes não identificou nenhuma amostra fecal positiva. Estes resultados confirmam Entamoeba dispar é a espécie dominante nesta região.
Interpretability and learning in neuro-fuzzy systems
Paiva, Rui Pedro; Dourado, AntónioA methodology for the development of linguistically interpretable fuzzy models from data is presented. The implementation of the model is conducted through the training of a neuro-fuzzy network, i.e., a neural net architecture capable of representing a fuzzy system. In the first phase, the structure of the model is obtained by means of subtractive clustering, which allows the extraction of a set of relevant rul...
Quality prediction in pulp bleaching: application of a neuro-fuzzy system
Paiva, Rui Pedro; Dourado, António; Duarte, BelmiroIn chemical industries, as paper pulp, quality control is a decisive task for competitiveness. Bleaching is a determinant operation in the quality of white pulp for paper. Quality prediction is decisive in quality control. However, the complexity of the bleaching process (and in general of industrial processes), its nonlinear and time-varying characteristics does not allow to develop reliable prediction models ...
Supervision and c-Means clustering of PID controllers for a solar power plant
Henriques, Jorge; Cardoso, Alberto; Dourado, AntónioA hierarchical control strategy consisting on a supervisory switching of PID controllers, simplified using the c-Means clustering technique, is developed and applied to the distributed collector field of a solar power plant. The main characteristic of this solar plant is that the primary energy source, the solar radiation, cannot be manipulated. It varies throughout the day, causing changes in plant dynamics co...
Global optimization of energy and production in process industries: a genetic a...
Santos, Amâncio; Dourado, AntónioThe process industries exhibit an increasing need for efficient management of all the factors that can reduce their operating costs, leading to the necessity for a global multi-objective optimization methodology that will enable the generation of optimum strategies, fulfilling the required restrictions. In this paper, a genetic algorithm is developed and applied for the optimal assignment of all the production ...
A self-organizing fuzzy controller with a fixed maximum number of rules and an ...
Dias, Joana Matos; Dourado, AntónioThis paper proposes a self-organizing fuzzy controller with a broad generality for minimum phase and stable systems. The controller learns the rules on-line with a minimum knowledge about the process. The rule base is built and permanenetly actualized from input-output real time data and has a fixed maximum number of rules (FMNR). An (on-line) adaptive similarity factor implements a special efficient inference ...
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