Loops De Feedback
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Emergence of cooperation in social-ecological system: an agent-based model / Emergência de cooperação em sistemas sócio-ecológicos: um modelo baseado em agentes
In the field of New Institutional Economics (NIE), studies of how individuals are organized to create mechanisms to provide cooperation in small groups have gained much attention recently. Therefore, some variables such as heterogeneity and group size are considered important for cooperation, yet there is a blurring of the effects that they cause, and if the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/03/2011
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2. Desconvolução não supervisionada por filtros de erro de predição não lineares e recorrentes e sistemas imunologicos artificiais / Unsupervised deconvolution by nonlinear recurrent prediction-error filters and artificial immune systems
When data is transmitted trough a channel, it may be subject to several sorts of distortion that might cause unacceptable level of degradation. A very usual type of distortion is the intersymbol interference ,which is a consequence of the temporal spread of the information-bearing signal .To mitigate this interference ,it is usual to employ an equalizer ,whi
Publicado em: 2010
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3. Controle digital de inversores monofásicos com realimentação de estados internos
This work presents a contribution to the study of PWM sinusoidal inverters. It is presented some voltage output control techniques highlighting the advantages and disadvantages. One technique using two feedback loops and compensation by proportional integral compensators, besides showing a natural short circuit protection, is implemented and evaluated by stu
Publicado em: 2009
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4. Modulação dos genes de relógio Per1, Cry1b, Clock e da melanopsina por endotelina-1 em células embrionárias de Danio rerio / Modulation of clock genes Per1, Cry1b, Clock and of melanopsin by endothelin-1 in Danio rerio embryonic cells
Biological clocks are endogenous timekeepers that are present both in eukaryotic as in prokaryotic organisms. Different clocks have different periods, and those that have about 24h of oscillation are called circadian clocks. In mammals, the first identified circadian clock is located in the suprachiasmatic nucleus, in the hipothalamus. It is now well known t
Publicado em: 2007
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5. Gestão de utilidades na indústria : uma abordagem sistêmica
O trabalho em questão aborda o tema da necessidade de redução dos custos operacionais das indústrias utilizando-se de um método de gestão mais eficaz de utilidades, mais especificamente dos insumos naturais energia elétrica, água e gás ou óleo combustível, além do descarte de efluentes líquidos e rejeitos sólidos. O objetivo do mesmo é, atrav�
Publicado em: 27/10/2005
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6. CONTROLE DE ACELERAÇÃO DE UMA MÁQUINA DE VIBRAÇÃO ELETRODINÂMICA / ACCELERATION CONTROL OF AN ELECTRODYNAMIC VIBRATION MACHINE
This work presents the development of a novel digital acceleration controller for sinusoidal vibration tests using switching-mode AC power source (ACPS) fed electrodynamic vibration machines. The proposed scheme is based on the interaction of two control loops: one for the shaker s acceleration regulation and another for the ACPS output voltage control. A ro
Publicado em: 2005
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7. Mathematical model of the circadian timing system / Modelo matemático do sistema de temporização biológica circadiana
Both the experimental evidences of generation of biological circadian rhythms and the results of investigation about the mechanisms of synchronization between the circadian rhythms with the external cycles of 24-hour period provided material for the development of important assumptions about the characteristics of the circadian timing system. Inside this sce
Publicado em: 2004
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8. Modelagem, simulação e controle de fermentação alcoolica continua em escala industrial
The aims of this work concern with the development of an optimal design of an industrial plant for continuous alcohol fermentation and the development of the most adequate control strategy for such a plant. Through mathematical modeling and computer simulation an optimal design was obtained, for the Brazilian industrial operating conditions, which consists o
Publicado em: 1994