Showing 71 - 80 of 141
This paper outlines a synthesis of ecological economics with econophysics and other complexity approaches to economics. Arguably, the resulting “ecological econophysics” will be scientifically sounder than mainstream economics and much better suited to addressing a major challenge of our...
Persistent link: https://www.econbiz.de/10011030249
The concept of self-organizedcriticality evolved from studies of three simplecellular-automata models: the sand-pile, slider-block,and forest-fire models. In each case, there is asteady “input” and the “loss” is associated with afractal (power-law) distribution of “avalanches.” Each...
Persistent link: https://www.econbiz.de/10010996630
This paper was produced for the El-Naschie Symposium on Nonlinear Dynamics in Shanghai in December 2005. In this paper we provide a review of the literature with respect to fluctuations in real systems and chaos. In doing so, we contrast the order and organization hypothesis of real systems with...
Persistent link: https://www.econbiz.de/10005106588
We present new results in a model of technological evolution which displays different macroscopic behaviors based on very simple microscopic rules of local interaction. The main features are criticality and self-organization. We give information about new scaling relation and study the roughness...
Persistent link: https://www.econbiz.de/10005080966
This paper demonstrates endogenous fluctuations of aggregate investments when firm-level investments follow an (S,s) policy and exhibit strategic complementarity. We present a method to characterize the aggregate fluctuations that arise from the interaction of the (S,s) policies. A closed-form...
Persistent link: https://www.econbiz.de/10005574113
We introduce a new class of models in which a large number of "agents" organize under the influence of an externally imposed coherent noise. The model shows reorganization events whose size distribution closely follows a power-law over many decades, even in the case where the agents do not...
Persistent link: https://www.econbiz.de/10005739939
Persistent link: https://www.econbiz.de/10005759598
Recently, it has been shown that the power spectrum of extinction intensity during the Phanerozoic takes a power-law form, which, it is suggested, may indicate the presence of critical phenomena in the dynamics underlying the extinction process. In this paper we reproduce these results using the...
Persistent link: https://www.econbiz.de/10005790723
Recent Fourier analyses of fossil extinction data have indicated that the power spectrum of extinction during the Phanerozoic may take the form of 1/f noise, a result which, it has been suggested, could be indicative of the presence of "critical dynamics" in the processes giving rise to...
Persistent link: https://www.econbiz.de/10005790760
Recent studies on the fossil record time series has shown that there is consistent evidence for self-similarity i.e., long-range correlations with power-law behavior. The existence of such fractal structures means that, when looking at a given time frame, some basic properties remain the same if...
Persistent link: https://www.econbiz.de/10005790819