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10.13. Matching¶

Q-1:

Avalanche
When a single grain causes the cells to topple which then affects a substantial friction of the grid.
Sand Pile Model
A 2-D cellular automaton where the state of each cell represents the slope of part of a sand pile.
Self-Organized Critically (SOC)
The tendency of some systems to evolve toward, and stay in, a critical state.
Signal
Any quantity that varies in time.
Ultimate Cause
A deeper kind of explanation for a large avalanche.
Box-Counting
A way of determining the fractal dimension of a set S in a Euclidean space Rn.
Fractal geometry
Patterns have self-similarity, they are similar when compared to the copies of the whole.
Holistic Model
This model focuses more on similarities between systems and less interest in analogous parts.
Noise
It is a signal which contains many frequency components in the context of signal processing
Pink Noise
In this, low-frequency components have more power than high-frequency components.
Power Spectrum
A function that shows the power of each frequency component.
Proximate Cause
The cause that is most immediately responsible for a large avalanche.
Reductionist Model
Describing a system by describing their interactions and parts.