منابع مشابه
Complex Networks from Simple Rules
Complex networks are all around us, and they can be generated by simple mechanisms. Understanding what kinds of networks can be produced by following simple rules is therefore of great importance. This issue is investigated by studying the dynamics of extremely simple systems where a “writer” moves around a network, modifying it in a way that depends upon the writer’s surroundings. Each vertex ...
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An often-mentioned advantage of rule-based programming languages is that a program can be extended simply by adding a few more rules. In practice however, the rules tend to be dependent on each other and instead of just adding rules, existing rules need to be changed. The unique rules in Cartoonist , a rule-based visual programming environment to build simulations, provides a solution to this p...
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In complex natural systems (such as ecological systems) it is common for those studying the macro-dynamics of systems to aim to describe, as simply as possible, the interactions between individuals occupying different niches in a system and to validate these by studying whether they account for the complex network of relationships observed in the actual system. We explore a similar principle ap...
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Since the seminal work of Lorenz [1963] and Rössler [1976], it has been known that complex behavior (chaos) can occur in systems of autonomous ordinary differential equations (ODEs) with as few as three variables and one or two quadratic nonlinearities. Many other simple chaotic systems have been discovered and studied over the years, but it is not known whether the algebraically simplest chaot...
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New outbreaks of Zika in the U.S. are imminent. Human nature dictates that many individuals will continue to revisit affected 'Ground Zero' patches, whether out of choice, work or family reasons - yet this feature is missing from traditional epidemiological analyses. Here we show that this missing visit-revisit mechanism is by itself capable of explaining quantitatively the 2016 human Zika outb...
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ژورنال
عنوان ژورنال: Mechanical Engineering
سال: 2009
ISSN: 0025-6501,1943-5649
DOI: 10.1115/1.2009-jul-1