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SIAM Journal on Applied Mathematics, 1965
A general theory is developed for studying changes of a wave train governed by non-linear partial differential equations. The technique is to average over the local oscillations in the medium and so obtain differential equations for the variations in amplitude, wave number, etc.
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A general theory is developed for studying changes of a wave train governed by non-linear partial differential equations. The technique is to average over the local oscillations in the medium and so obtain differential equations for the variations in amplitude, wave number, etc.
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2009
Abstract The invasion process has been described as a series of stages (Carlton 1985, Williamson and Fitter 1996, Richardson et al. 2000a, Kolar and Lodge 2001). Some have characterized three stages: arrival, establishment, and spread (Williamson 1996, Freckleton et al.
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Abstract The invasion process has been described as a series of stages (Carlton 1985, Williamson and Fitter 1996, Richardson et al. 2000a, Kolar and Lodge 2001). Some have characterized three stages: arrival, establishment, and spread (Williamson 1996, Freckleton et al.
openaire +1 more source