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Asymptotic behaviour of cooperative systems: an application to malaria control
(2020-10)
In this work we propose a model that represents the relation between fish ponds, the mosquito population and the transmission of malaria. It has been observed that in the Amazonic region of Acre, in the North of Brazil, ...
Stochastic control and differential games with path-dependent controls
(2017-03-05)
In this paper we consider the functional Itˆo calculus framework to find a path- dependent version of the Hamilton-Jacobi-Bellman equation for stochastic control problems with path-dependence in the controls. We also prove ...
Second order necessary and sufficient optimality conditions for singular solutions of partially-affine control problems
(2017-03-02)
In this article we study optimal control problems for sys- tems that are affine with respect to some of the control variables and nonlinear in relation to the others. We consider finitely many equality and inequality ...
Digitising ivory artefacts at the National History Museum in Brazil
(2017)
The advantages of digitisation technologies, such as 3D scanning, photogrammetry and 3D modelling, for the documentation and dissemination of cultural heritage artefacts is well understood by researchers. Nevertheless, ...
The infinitely many zeros of stochastic coupled oscillators driven by random forces
(2017)
In this work, previous results concerning the infinitely many zeros of single stochastic oscillators driven by random forces are extended to the general class of coupled stochastic oscillators. We focus on three main ...
Digitalização da miniatura em marfim de junco chinês da coleção do Museu Histórico Nacional
(2017)
O texto apresenta os critérios históricos e tecnológicos empregados no projeto de digitalização em 3D de uma miniatura em marfim de junco chinês que pertenceu ao Infante D. Pedro, primeiro imperador do Brasil, e que ...
Reconstructing news spread networks and studying its dynamics
(2017)
News spread can be seen as a contagious process in internet media outlets. This process can be transformed into a temporal network which represents the influence between published articles and between media outlets. In ...
A organização de documentos técnicos de aeronaves à luz da classificação facetada
(2017)
Apresenta uma proposta de classificação de documentos, com base nos princípios da classificação facetada e sua possível aplicabilidade nos documentos da área de manutenção aeronáutica, no âmbito da Força Aérea Brasileira. ...
Second order analysis of control-affine problems with scalar state constraint
(Springer, 2016-01-09)
In this article we establish new second order necessary and sufficient opti- mality conditions for a class of control-affine problems with a scalar control and a scalar state constraint. These optimality conditions extend ...
Interval observer for SIR epidemic model subject to uncertain seasonality
(EMAp - Escola de Matemática Aplicada, 2016)
The issue of state estimation is considered for a SIR model with seasonal variations and uncertainties in the transmission rate. Assuming continuous measurement of the number of new infectives per unit time, a class of ...
