The Langevin system subjected to non-Gaussian noise has been discussed, by using the second-order moment approach with the two models for generating the noise. We have derived the effective differential equation (DE) for a variable x, from which the stationary probability distribution P (x) has been calculated with the use of the Fokker-Planck equation. The result of P (x) calculated by the mom...

We compute the homogenized-concentrated limit for a pair of non-linearly coupled diffusion equations in a perforated cylindric domain with coaxial cylindric holes periodically distributed along its axis. This problem arises from visual transduction. To cite this article: D. Andreucci et al., C. R. Acad. Sci. Paris, Ser. I 335 (2002) 329–332.  2002 Académie des sciences/Éditions scientifiques e...

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