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The dynamic channel assignment (DCA) in mobile communications systems using genetic algorithm (GA) is investigated in this research. Two new strategies using GA are proposed. In the first one, the channels previously assigned are kept locked during the call holding time (GAL). In the second one, the calls can be switched to different channels during the(More)
The design of a new multifunctional integrated optical device capable of operating simultaneously as an optical switch and optical iso-lator is presented. The device consists of a multilayer directional coupler employing one nonlinear and one magneto-optic layer, with all other layers being linear and isotropic. Therefore, only phase matching conditions are(More)
Immunoglobulin E (IgE) has been shown to play a critical role in the allergic late-phase reaction, which is marked by intense leukocyte infiltration and edema. In this study we assessed the allergic pleural inflammation triggered by intrapleural (i.pl.) challenge in sensitized rats. We examined pleural effluent from actively sensitized rats following(More)
There is an urgent need for expanding the number of brain banks serving psychiatric research. We describe here the Psychiatric Disorders arm of the Brain Bank of the Brazilian Aging Brain Study Group (Psy-BBBABSG), which is focused in bipolar disorder (BD) and obsessive compulsive disorder (OCD). Our protocol was designed to minimize limitations faced by(More)
77 Estudos de Casos Hipertextuais: Rumo a uma Estudos de Casos Hipertextuais: Rumo a uma Estudos de Casos Hipertextuais: Rumo a uma Estudos de Casos Hipertextuais: Rumo a uma Estudos de Casos Hipertextuais: Rumo a uma A A A A ABSTRACT BSTRACT BSTRACT BSTRACT BSTRACT Since it has been adapted to the teaching of managerial practice almost a century ago, the(More)
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