Search for dissertations about: "random walks"

Showing result 11 - 15 of 30 swedish dissertations containing the words random walks.

  2. 11. Semicontraction, Nonpositive Curvature, and Multiplicative Ergodic Theory

    Author : Anders Karlsson; KTH; []
    Keywords : multipplicative ergodic theorems; monexpanding maps; isometry groups; random walks; nonpositive curvature;

    Abstract : .... READ MORE

  4. 12. Asymptotics and dynamics in first-passage and continuum percolation

    Author : Daniel Ahlberg; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; first-passage percolation; noise sensitivity; continuum percolation; Gilbert model; limit theorems; shape theorem; stopped random walks; large deviations; dynamical percolation; continuum percolation;

    Abstract : This thesis combines the study of asymptotic properties of percolation processes with various dynamical concepts. First-passage percolation is a model for the spatial propagation of a fluid on a discrete structure; the Shape Theorem describes its almost sure convergence towards an asymptotic shape, when considered on the square (or cubic) lattice. READ MORE

  5. 13. Numerical investigations of the distributions of the longest excursions in tied down simple random walks and brownian bridges

    Author : Andreas Lindell; KTH; []
    Keywords : ;

    Abstract : .... READ MORE

  6. 14. My first-passage : target search in physics and biology

    Author : Markus Nyberg; Ludvig Lizana; Martin Rosvall; Carlos Mejia-Monasterio; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; first-passage; mean first-passage time; mean first-arrival time; random walk; diffusion; zero-crossing; persistence; survival probability; network; resetting; teoretisk fysik; Theoretical Physics;

    Abstract : Random walks and diffusing particles have been a corner stone in modelling the random motion of a varying quantity with applications spanning over many research fields. And in most of the applications one can ask a question related to when something happened for the first time. That is, a first-passage problem. READ MORE

  7. 15. Harmonic measures

    Author : Jonatan Vasilis; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; harmonic measure; square root of the Poisson kernel; Hardy space; p-Laplace operator; random walk; regular tree; discrete minimal thinness; Hardy space;

    Abstract : This thesis uses both analytic and probabilistic methods to study continuous and discrete problems. The main areas of study are the asymptotic properties of p-harmonic measure, and various aspects of the square root of the Poisson kernel. Fix a domain and a boundary point, subject to certain regularity conditions. READ MORE