Pinned, locked, pushed, and pulled traveling waves in structured environments
نویسندگان
چکیده
منابع مشابه
Inside dynamics of pulled and pushed fronts
We investigate the inside structure of one-dimensional reaction-diffusion traveling fronts. The reaction terms are of the monostable, bistable or ignition types. Assuming that the fronts are made of several components with identical diffusion and growth rates, we analyze the spreading properties of each component. In the monostable case, the fronts are classified as pulled or pushed ones, depen...
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The concept of pulled fronts with a cutoff epsilon has been introduced to model the effects of the discrete nature of the constituent particles on the asymptotic front speed in models with continuum variables (pulled fronts are the fronts that propagate into an unstable state, and have an asymptotic front speed equal to the linear spreading speed v* of small linear perturbations around the unst...
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Supporting the Aviation Applied Technology DirectorateÕs (AATD) Rotorcraft PilotÕs Associate Advanced Technology Demonstration Program, the Lockheed Martin Advanced Technology Laboratories (ATL) demonstrated that formation of a Common Tactical Picture (CTP) from onboard and offboard sensors, via data fusion, was essential to automated decision aiding. In this case, the CTP was formed solely by ...
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Short Abstract: Traveling waves describe diverse natural phenomena from crystal growth in physics to range expansions in biology. Two classes of waves exist with very different properties: pulled and pushed. Pulled waves are noisy because they are driven by high growth rates at the expansion edge, where the number of organisms is small. In contrast, fluctuations are suppressed in pushed waves b...
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High rates of self-employment among ethnic minorities in England and Wales are investigated using a framework in which the self-employment decision is influenced by ethnic-specific attributes as well as sectoral earnings differentials. As expected, differences in an individual’s predicted earnings in paid and self-employment are strongly correlated with self-employment decisions. Individuals wi...
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ژورنال
عنوان ژورنال: Theoretical Population Biology
سال: 2019
ISSN: 0040-5809
DOI: 10.1016/j.tpb.2019.04.003