Anomalous diffusion and relaxation close to thermal equilibrium: A fractional Fokker-Planck equation approach
We introduce a fractional Fokker-Planck equation describing the stochastic evolution of a
particle under the combined influence of an external, nonlinear force and a thermal heat …
particle under the combined influence of an external, nonlinear force and a thermal heat …
Lévy flights in external force fields: Langevin and fractional Fokker-Planck equations and their solutions
S Jespersen, R Metzler, HC Fogedby - Physical Review E, 1999 - APS
We consider Lévy flights subject to external force fields. This anomalous transport process is
described by two approaches, a Langevin equation with Lévy noise and the corresponding …
described by two approaches, a Langevin equation with Lévy noise and the corresponding …
Evaluation of fractal parameters of percolation model objects and natural porous media by means of NMR microscopy
A Klemm, HP Müller, R Kimmich - Physica A: Statistical Mechanics and its …, 1999 - Elsevier
Noninvasive NMR microscopy permits one to image the three-dimensional pore space of
porous materials filled with a fluid. The binary representation of the geometrical structure is …
porous materials filled with a fluid. The binary representation of the geometrical structure is …
Site-percolation models including heterogeneous particles on a square lattice
R Sahara, H Mizuseki, K Ohno… - Materials Transactions …, 1999 - jstage.jst.go.jp
抄録 Four types of site-percolation models are introduced on a square lattice. Two of them
consist of two different sizes of particles, while others introduce anisotropies of particles. By …
consist of two different sizes of particles, while others introduce anisotropies of particles. By …
Weak universality of a site-percolation model with two different sizes of particles on a square lattice
R Sahara, H Mizuseki, K Ohno… - Journal of the Physical …, 1999 - jstage.jst.go.jp
A site-percolation model with two different sizes of particles is newly introduced on a square
lattice. To estimate the fractal dimension and critical exponents with high accuracy, a finite …
lattice. To estimate the fractal dimension and critical exponents with high accuracy, a finite …
Quantitative Charakterisierung makroporöser Materialien mittels NMR-Mikroskopie
M Butz - 1999 - edoc.hu-berlin.de
Poröse Materialien sind von großer Bedeutung in verschiedenen Anwendungsbereichen
und sind weit verbreitet sowohl in natürlicher oder technischer Herkunft. Ihre Eigenschaften …
und sind weit verbreitet sowohl in natürlicher oder technischer Herkunft. Ihre Eigenschaften …