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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Monte Carlo Simulations For Small-World Stochastic Processes

Dubreus, Terrance Maurice 07 May 2005 (has links)
We conduct a computational statistical study of nonequilibrium processes with and without small-world interactions. We first investigate the motion of a passive random walker on growing nonequilibrium one-dimensional surfaces with or without small-world connections. The walker always moves to a higher connected site on the evolving surface. The surfaces examined are related to the evolution of parallel discrete-event simulations, with or without small-world connections. We have also examined the Kim-Kosterlitz surface growth model. In particular, we study the probability distribution function of the distance between the walker and the global maximum of the surface at saturation. We find that the availability of small-world connections for either the surface or the walker dramatically changes this probability distribution function. We next report of the lifetime of the metastable state of the square-lattice Ising model. We have used a macroscopic meanield dynamic using the density of states from a modified Wang-Landau sampling procedure. The Wang-Landau sampling, was used to give the density of states g, either as a function of two parameters, g(E,M), or as a function of only the magnetization, g(M). From the density of states the constrained free energy, F(m) , is calculated. Using a macroscopic meanield dynamic, constrained to having only single spin flips, we obtain the lifetime, tau, of the metastable state with and without small-world connections. From F(m) we obtain the exact first-passage time, tau Comparisons to recent predictions of the droplet theory of nucleation and growth will be made.
2

Analyse de la relation entre l'évolution de la valeur des terres, les changements d'utilisation du sol et la géomorphologie à Godmanchester (Québec)

Provost, Érik January 2003 (has links)
Mémoire numérisé par la Direction des bibliothèques de l'Université de Montréal.
3

Analyse de l'influence des changements de propriétaires sur les changements d'utilisation du sol et la structure du paysage dans une municipalité agricole du sud du Québec à l'aide d'un système d'information géographique orienté-objet

Lapointe, Geneviève January 2004 (has links)
Mémoire numérisé par la Direction des bibliothèques de l'Université de Montréal.

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