Results 1 to 10 of about 479,813 (291)
Distinct Spreading Speeds in a Lotka–Volterra Cooperative System
Journal of Mathematics, 2020 This paper deals with the spreading speeds in the classical Lotka–Volterra cooperative system, of which the bounds have been studied earlier. By introducing an auxiliary cooperative system and constructing an upper solution, we obtain a sufficient ...
Shuxia Pan
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Journal of Biological DynamicsThis paper concerns the invasion dynamics of the lattice pioneer-climax competition model with parameter regions in which the system is non-monotone. We estimate the spreading speeds and establish appropriate conditions under which the spreading speeds ...
Haifeng Song, Yuxiang Zhang
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Spreading Speeds and Traveling Waves for Nonmonotone Integrodifference Equations [PDF]
SIAM Journal on Mathematical Analysis, 2008 Summary: The spreading speeds and traveling waves are established for a class of nonmonotone discrete-time integrodifference equation models. It is shown that the spreading speed is linearly determinate and coincides with the minimal wave speed of traveling waves.
Sze-Bi Hsu, Xiao-Qiang Zhao
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Predicting the Speed of Epidemics Spreading in Networks [PDF]
Physical Review Letters, 2020 Global transport and communication networks enable information, ideas and infectious diseases now to spread at speeds far beyond what has historically been possible. To effectively monitor, design, or intervene in such epidemic-like processes, there is a need to predict the speed of a particular contagion in a particular network, and to distinguish ...
Sam Moore, Tim Rogers
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On an upper bound for the spreading speed
Discrete and Continuous Dynamical Systems - B, 2022 <p style='text-indent:20px;'>In this paper, we use the exponential transform to give a unified formal upper bound for the asymptotic rate of spread of a population propagating in a one dimensional habitat. We show through examples how this upper bound can be obtained directly for discrete and continuous time models. This upper bound has the form &
Mesk, Mohammed, Moussaoui, Ali
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Remote Sensing, 2023 Knowledge of the ocean backscatter at various azimuth angles is critical to the radar detection of the ocean environment. In this study, the modified two-scale model (TSM), which introduces a correction term in the conventional TSM, is improved based on ...
Qiushuang Yan +5 more
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High-Speed Railways and the Spread of Covid-19
SSRN Electronic Journal, 2022 High-speed railways (HSRs) greatly decrease transportation costs and facilitate the movement of goods, services, and passengers across cities. In the context of the Covid-19 pandemic, however, HSRs may contribute to the cross-regional spread of the new coronavirus.
Pang, Jindong, He, Youle, Shen, Shulin
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Approximate solution to the speed of spreading viruses [PDF]
Physical Review E, 2004 Recently, it has been shown that the speed of virus infections can be explained by time-delayed reaction-diffusion [J. Fort and V. Méndez, Phys. Rev. Lett. 89, 178101 (2002)], but no analytical solutions were found. Here we derive formulas for the front speed, valid in appropriate limits.
Ortega-Cejas, Vicente +3 more
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Numerical Investigation of Air Entrapment Dynamics for High-Speed Thermal Spraying
Applied Sciences, 2022 For thermal spraying, bubble entrapments are highly undesired, as this would lead to pores in the final coating and lower its adhesion quality. This understanding warrants an investigation of the process behind their formation.
Han Ge +5 more
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Frontiers in Public Health, 2023 IntroductionShelter allocation is one of the most important measures in urban disaster prevention and mitigation planning. Meanwhile, it is essentially a comprehensive planning problem combining resource allocation and traffic routing.
Yang Yin +3 more
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