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Libro de Resúmenes / Book of Abstracts (Español/English)

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Resumenes 61<br />

Re<strong>de</strong>s <strong>de</strong> mapas acoplados em sistemas<br />

biológicos <strong>de</strong> reação-difusão<br />

Luiz Alberto Díaz Rodrigues 1 , Maria Cristina Varriale 2 e Joceliane da Cas 2<br />

1 Departamento <strong>de</strong> Matemática, UFSM Santa Maria, RS, Brasil<br />

luizdiaz@smail.ufsm.br<br />

2 Instituto <strong>de</strong> Matemática, UFRGS Porto Alegre, RS, Brasil<br />

cris@mat.ufrgs.br<br />

Re<strong>de</strong>s <strong>de</strong> Mapas Acoplados (“Coupled Map Lattices”) são mo<strong>de</strong>los nos<br />

quais o espaço e o tempo são representados por variáveis discretas<br />

enquanto as variáveis <strong>de</strong> estado são <strong>de</strong>scritas por <strong>de</strong>nsida<strong>de</strong>s contínuas.<br />

Tais mo<strong>de</strong>los, que representam uma po<strong>de</strong>rosa ferramenta para analisar<br />

padrões espaciais e temporais resultantes <strong>de</strong> interações biológicas,<br />

constituem-se <strong>de</strong> um reticulado <strong>de</strong> equações a diferenças acopladas. Como<br />

o espaço e o tempo são discretos em sua formulação, tais mo<strong>de</strong>los são<br />

menos precisos do ponto <strong>de</strong> vista quantitativo do que mo<strong>de</strong>los <strong>de</strong> reaçãodifusão.<br />

No entanto, como eles po<strong>de</strong>m ser formulados diretamente em<br />

termos das escalas espaciais e temporais dos processos envolvidos, po<strong>de</strong>m<br />

revelar importantes padrões qualitativos.<br />

O objetivo principal <strong>de</strong>ste trabalho, portanto, é estudar Re<strong>de</strong>s <strong>de</strong><br />

Mapas Acoplados para simulação <strong>de</strong> sistemas <strong>de</strong> reação-difusão em<br />

Dinâmica Populacional. Estes mo<strong>de</strong>los representam aproximações <strong>de</strong><br />

mo<strong>de</strong>los contínuos <strong>de</strong> reação-difusão e são especialmente projetados para<br />

experimentação interativa, o que permite testar uma gran<strong>de</strong> varieda<strong>de</strong> <strong>de</strong><br />

mo<strong>de</strong>los e parâmetros.<br />

Palavras-Chave: Re<strong>de</strong>s <strong>de</strong> Mapas Acoplados, Sistemas <strong>de</strong> Reação-<br />

Difusão.<br />

Coupled map lattices in<br />

reaction-diffusion systems<br />

Coupled Map Lattices are approaches to mo<strong>de</strong>l population<br />

interactions. This type <strong>of</strong> formulation consi<strong>de</strong>rs space and time as discrete<br />

and state variables (population <strong>de</strong>nsities) as continuous. They are<br />

formulated as a system <strong>of</strong> difference equations in a coupled map lattice.<br />

Though it may seem that discrete mo<strong>de</strong>ls are less precise than the<br />

corresponding continuous reaction-diffusion mo<strong>de</strong>ls, we can take some<br />

advantage because they can be directly formulated in terms <strong>of</strong> spatial and<br />

temporal scales <strong>of</strong> the involved process, and then revealing important<br />

qualitative patterns.<br />

The main goal <strong>of</strong> this work is to analyze Coupled Map Lattices mo<strong>de</strong>ls,<br />

to simulate biological reaction-diffusion systems. These mo<strong>de</strong>ls represent<br />

approximations <strong>of</strong> reaction-diffusion continuous mo<strong>de</strong>ls and have been<br />

specially <strong>de</strong>signed to allow interactive experimentation. Thus, they enable<br />

us to check a large variety <strong>of</strong> dynamics and parameters.

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