Self-Organized Patchiness in Asthma as a Prelude to Catastrophic Shifts
نویسندگان
چکیده
منابع مشابه
Self-organized patchiness and catastrophic shifts in ecosystems.
Unexpected sudden catastrophic shifts may occur in ecosystems, with concomitant losses or gains of ecological and economic resources. Such shifts have been theoretically attributed to positive feedback and bistability of ecosystem states. However, verifications and predictive power with respect to catastrophic responses to a changing environment are lacking for spatially extensive ecosystems. T...
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Ecosystems are highly structured. Organisms are not randomly distributed but can be found in spatial aggregates at many scales, leading to spatial heterogeneity or even regular patterns1. The widespread occurrence of these aggregates in many different ecosystems suggests that generic factors intrinsic to the populations—such as interactions between the organisms—play a major role in their emerg...
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Catastrophic shifts are known to pose a serious threat to ecology, and a reliable set of early warning indicators is desperately needed. However, the tools suggested so far have two problems. First, they cannot discriminate between a smooth transition and an imminent irreversible shift. Second, they aimed at predicting the tipping point where a state loses its stability, but in noisy spatial sy...
متن کاملEluding catastrophic shifts.
Transitions between regimes with radically different properties are ubiquitous in nature. Such transitions can occur either smoothly or in an abrupt and catastrophic fashion. Important examples of the latter can be found in ecology, climate sciences, and economics, to name a few, where regime shifts have catastrophic consequences that are mostly irreversible (e.g., desertification, coral reef c...
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The original sandpile model of Bak, Tang and Wiesenfeld from 1987 has inspired lots of consequent work and further ideas of how to describe the birth of scale-invariant statistics in various systems and in particular models. In this article the basic ingredients of self-organized criticality (SOC) are overviewed. In line with the orginal arguments of BTW SOC is now known to be a property of sys...
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ژورنال
عنوان ژورنال: PEDIATRICS
سال: 2006
ISSN: 0031-4005,1098-4275
DOI: 10.1542/peds.2006-0900ss