932 resultados para Delayed optoelectronic feedback
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A version of the electronic management of assessment (EMA) 'submission, marking and feedback process' map in Visio format. This format will only open in Microsoft Visio software.
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A version of the electronic management of assessment (EMA) 'marking and feedback' process map in Visio format. This format will only open in Microsoft Visio software
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The text transcript for a Jisc podcast on the assessment and feedback lifecycle. One of a series on the topic of the electronic management of assessment (EMA).
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The submission, marking and feedback process diagram - part of our guide on Electronic management of assessment (EMA) in higher education: processes and systems
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This paper presents a vaccination strategy for fighting against the propagation of epidemic diseases. The disease propagation is described by an SEIR (susceptible plus infected plus infectious plus removed populations) epidemic model. The model takes into account the total population amounts as a refrain for the illness transmission since its increase makes the contacts among susceptible and infected more difficult. The vaccination strategy is based on a continuous-time nonlinear control law synthesised via an exact feedback input-output linearization approach. An observer is incorporated into the control scheme to provide online estimates for the susceptible and infected populations in the case when their values are not available from online measurement but they are necessary to implement the control law. The vaccination control is generated based on the information provided by the observer. The control objective is to asymptotically eradicate the infection from the population so that the removed-by-immunity population asymptotically tracks the whole one without precise knowledge of the partial populations. The model positivity, the eradication of the infection under feedback vaccination laws and the stability properties as well as the asymptotic convergence of the estimation errors to zero as time tends to infinity are investigated.