Xem 1-7 trên 7 kết quả Weak mixing
  • We prove that a typical interval exchange transformation is either weakly mixing or it is an irrational rotation. We also conclude that a typical translation flow on a typical translation surface of genus g ≥ 2 (with prescribed singularity types) is weakly mixing.

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  • We study enhancement of diffusive mixing on a compact Riemannian manifold by a fast incompressible flow. Our main result is a sharp description of the class of flows that make the deviation of the solution from its average arbitrarily small in an arbitrarily short time, provided that the flow amplitude is large enough. The necessary and sufficient condition on such flows is expressed naturally in terms of the spectral properties of the dynamical system associated with the flow. In particular, we find that weakly mixing flows always enhance dissipation in this sense. ...

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  • The third component of the model was demonstrable results. Capitalizing on PSI’ results-based system, Roberts felt that advertising the concrete results of PSI’ interventions would increase the effectiveness of the marketing effort and len legitimacy to the cause. Results had the power to convince the target audience an stimulate fundraising, which would in turn allow PSI to do even more. In addition to promoting PSI’s work in general, publicizing the results of YouthAIDS specifically would also be important. This could directly dovetail into cause-relate marketing efforts.

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  • Because of the topographic setting of the city, the moderately strong insolation associated with its tropical latitude and high elevation, and weak prevailing synoptic winds, Mexico City is strongly affected by thermally and topographically induced circulation patterns.

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  • Introduction: Hypochlorite a (HClO) is a weak acid, which exerts oxidative action; it is being widely used in the salt forms for bleaching and other purposes. Sodium hypochlorite (NaClO) aqueous solution is usually used as a disinfectant, bleaching agent, fungicide and ink eraser, and is thus usually included in detergents for laundry. Calcium hypochlorite [Ca(ClO)2, bleaching powder] is also used as a bleaching agent and disinfectant.

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  • Many examples of P2P systems have emerged recently, most of which are wide-area, large-scale systems that provide content sharing [12], storage services [10], or distributed “grid” computation [4, 11]. Smaller-scale P2P systems also exist, such as federated, serverless file systems [2, 1] and collaborative workgroup tools [7]. The success of these systems has been mixed; some, such as Napster, have enjoyed enormous popularity and perform well at scale.

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  • Mixed layers grew to depths of 2,500 to 4,000 meters, with a rapid period of growth beginning shortly before noon and lasting for several hours. Significant differences between the mixed-layer temperatures in the basin and outside the basin were observed. Data analyses and models provide evidence that the circulations are highly complex and that relatively weak upper-level synoptic systems had an impact on the local and regional thermally driven flows in the area.

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