In a data-driven finite element analysis the experimental data are directly employed as an input for computational analysis, thus evading any state of matter modeling. The essential physical principles, such balance laws and continuity, remain unchanged, do all numerical schemes used in their discretization. addition, uncertainties fluctuations experimentally measured enter simulation. Here is ...

Generation of spin imbalance in nonmagnetic semiconductors is crucial for the functioning many spintronic devices. An attractive design injectors into based on a pumping from precessing ferromagnet, typically excited by microwave magnetic field leading to high power consumption device. Here we describe theoretically injector with greatly reduced energy losses, which dynamics an elastic wave inj...

Diffusion of material has a crucial influence on dislocation motion, particularly at elevated temperatures. It is generally believed that, in single crystal, lattice diffusion prevails when the temperature high and core dominates relatively low Due to complexity modeling coupling between diffusion, given physical problem often simplified into two extremes where only one regimes considered. Howe...

For a stable matrix A with real entries, sufficient and necessary conditions for A D to be stable for all non-negative diagonal matrices D are obtained. Implications of these conditions for the stability and instability of constant steadystate solutions to reaction diffusion systems are discussed and an example is given to show applications. 2001 Academic Press

In this work we derive a novel density driven diffusion scheme for image enhancement. Our approach, called D3, is a semi-local method that uses an initial structure-preserving oversegmentation step of the input image. Because of this, each segment will approximately conform to a homogeneous region in the image, allowing us to easily estimate parameters of the underlying stochastic process thus ...