SELF-ORGANIZED CRITICALITY AND 1/f NOISE IN TRAFFIC

1/f like noise and self organized criticality

In this paper, the concept of ubiquitous 1/f like noise and the idea of self organized criticality as the explanation are introduced using simple models. Both theoretical and experimental investigations are discussed to further explore the concept of SOC and test its validity. Ubiquity of 1/f like noise

1/f Dynamic in Complex Visual Search: Evidence for Self-Organized Criticality in Human Perception

Self-Organized Criticality on Non-periodic Graphs

Self-organized critical models are used to describe the 1/f-spectra of rather different physical situations like snow avalanches, noise of electric currents, luminosities of stars or topologies of landscapes. The prototype of the SOC-models is the sandpile model of Bak, Tang and Wiesenfeld [1]. We implement this model on non-periodic graphs where it can become either isotropic or anisotropic an...

Waiting-time distribution between avalanches and 1/f-noise: Experiments on a three dimensional pile of rice

The first-return times in the dynamics of a three dimensional pile of rice are measured. Furthermore, the 1/f exponent of the avalanche dynamics is determined. These quantities taken together, are used to check general scaling relations for systems with extremal dynamics exhibiting self-organized criticality. We find that τfirst = 1 + a. Furthermore, we discuss the relation of the 1/f a exponen...

Rapid self-organized criticality: Fractal evolution in extreme environments.

We introduce the phenomenon of rapid self-organized criticality (RSOC) and show that, like some models of self-organized criticality (SOC), RSOC generates scale-invariant event distributions and 1/f noise. Unlike SOC, however, RSOC persists despite more than an order of magnitude variation in driving rate and displays extremely thick and dynamic branching geometry. Starting with an initial set ...