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Now showing items 31-40 of 129

#### On the propagation of nonlinear transients of temperature and pore pressure in a thin porous boundary layer between two rocks.

(Journal of Hydrology, 2019)

The dynamics of transients of fluid-rock temperature, pore pressure, pollutants in porous rocks are of vivid interest for fundamental problems in hydrological, volcanic, hydrocarbon systems, deep oil drilling. This can ...

#### Front Propagation in Random Media

(2019)

This PhD thesis deals with the problem of the propagation of fronts under random circumstances. A
statistical model to represent the motion of fronts when are evolving in a media characterized by
microscopical randomness ...

#### Stochastic processes for anomalous diffusion

(2019)

Anomalous diffusion is a diffusion process which Mean Square Displacement (MSD)
is not a linear funtion of time, what is known as normal diffusion.
When the relation is faster than linear, it is called superdiffusion and ...

#### A jacobian module for disentanglements and applications to Mond's conjecture

(Revista Matemática Complutense, 2019)

Let $f:(\mathbb C^n,S)\to (\mathbb C^{n+1},0)$ be a germ whose image is given by $g=0$. We define an $\mathcal O_{n+1}$-module $M(g)$ with the property that $\mathscr A_e$-$\operatorname{codim}(f)\le \dim_\mathbb C M(g)$, ...

#### Measure-valued weak solutions to some kinetic equations with singular kernels for quantum particles

(2018-12-19)

In this thesis, we present a mathematical study of three problems arising in the kinetic theory of quantum gases.
In the first part, we consider a Boltzmann equation that is used to describe the time evolution of the ...

#### Isotropic Bipolaron-Fermion-Exchange Theory and Unconventional Pairing in Cuprate Superconductors

(Ann. Phys. (Berl.), 2018-12-10)

The discovery of high-temperature superconductors in 1986 represented a major experimental breakthrough (Nobel Prize 1987), but their theoretical explanation is still a subject of much debate. These materials have many ...

#### RandomFront 2.3 A physical parametrisation of fire-spotting for operational fire spread models: Implementation in WRF-Sfire and response analysis with LSFire+

(Geoscientific Model Development, 2018-12)

Fire-spotting is often responsible for a dangerous flare up in the wildfire and causes secondary ignitions isolated from
the primary fire zone leading to perilous situations. The main aim of the present research to provide ...

#### Modeling anomalous heat diffusion: Comparing fractional derivative and non-linear diffusivity treatments

(International Journal of Thermal Sciences, 2018-11)

In the Fourier heat conduction equation, when the flux definition is expressed as the product of a constant diffusivity and the temperature gradient, the characteristic length scale evolves as the square root of time. ...

#### Centre-of-mass like superposition of Ornstein-Uhlenbeck processes: A pathway to non-autonomous stochastic differential equations and to fractional diffusion

(Fractional Calculus and Applied Analysis, 2018-10-25)

We consider an ensemble of Ornstein–Uhlenbeck processes featuring a population of relaxation times and a population of noise amplitudes that characterize the heterogeneity of the ensemble. We show that the centre-of-mass ...

#### Crossover from anomalous to normal diffusion: truncated power-law noise correlations and applications to dynamics in lipid bilayers

(New Journal of Physics, 2018-10-18)

The emerging diffusive dynamics in many complex systems shows a
characteristic crossover behaviour from anomalous to normal diffusion which
is otherwise fitted by two independent power-laws. A prominent example for
a ...