835 resultados para Educational phenomenon


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Els autors participants en el projecte d???innovaci?? educativa ???1:1 un ordinador un alumne???, entre l???empresa Acer i l???European Schoolnet, cerquen interpretacions a les correlacions trobades entre els resultats de l???Informe PISA i les enquestes inicials, que es varen fer al professorat participant, a l???inici del projecte esmentat. En aquestes enquestes el professorat express?? els nivells de confian??a a l???hora d???emprar els ordinadors en educaci??.

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The control and prediction of wastewater treatment plants poses an important goal: to avoid breaking the environmental balance by always keeping the system in stable operating conditions. It is known that qualitative information — coming from microscopic examinations and subjective remarks — has a deep influence on the activated sludge process. In particular, on the total amount of effluent suspended solids, one of the measures of overall plant performance. The search for an input–output model of this variable and the prediction of sudden increases (bulking episodes) is thus a central concern to ensure the fulfillment of current discharge limitations. Unfortunately, the strong interrelation between variables, their heterogeneity and the very high amount of missing information makes the use of traditional techniques difficult, or even impossible. Through the combined use of several methods — rough set theory and artificial neural networks, mainly — reasonable prediction models are found, which also serve to show the different importance of variables and provide insight into the process dynamics