diffusion générale - significado y definición. Qué es diffusion générale
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Qué (quién) es diffusion générale - definición

Bohm-diffusion; Bohm Diffusion

Société Générale (disambiguation)         
WIKIMEDIA DISAMBIGUATION PAGE
Societe Generale (disambiguation)
Société générale means "general company" or "general society" in French, and was included in the name of many legal entities, particularly in the 19th and early 20th centuries, starting with the Société Générale de Belgique in 1822. In contemporary usage, it generally refers to Société Générale, a French banking group, unless context indicates otherwise.
Diffusion bonding         
  • Animation of the Diffusion Welding process
  • Animation of sheet forming process using diffusion welding (see also [[hydroforming]]).
  • Animation of Diffusion Bonding Process
Diffusion bonding or diffusion welding is a solid-state welding technique used in metalworking, capable of joining similar and dissimilar metals. It operates on the principle of solid-state diffusion, wherein the atoms of two solid, metallic surfaces intersperse themselves over time.
Diffusion map         
DIMENSIONAL REDUCTION ALGORITHM
Diffusion maps
Diffusion maps is a dimensionality reduction or feature extraction algorithm introduced by Coifman and Lafon which computes a family of embeddings of a data set into Euclidean space (often low-dimensional) whose coordinates can be computed from the eigenvectors and eigenvalues of a diffusion operator on the data. The Euclidean distance between points in the embedded space is equal to the "diffusion distance" between probability distributions centered at those points.

Wikipedia

Bohm diffusion

The diffusion of plasma across a magnetic field was conjectured to follow the Bohm diffusion scaling as indicated from the early plasma experiments of very lossy machines. This predicted that the rate of diffusion was linear with temperature and inversely linear with the strength of the confining magnetic field.

The rate predicted by Bohm diffusion is much higher than the rate predicted by classical diffusion, which develops from a random walk within the plasma. The classical model scaled inversely with the square of the magnetic field. If the classical model is correct, small increases in the field lead to much longer confinement times. If the Bohm model is correct, magnetically confined fusion would not be practical.

Early fusion energy machines appeared to behave according to Bohm's model, and by the 1960s there was a significant stagnation within the field. The introduction of the tokamak in 1968 was the first evidence that the Bohm model did not hold for all machines. Bohm predicts rates that are too fast for these machines, and classical too slow; studying these machines has led to the neoclassical diffusion concept.