引导
发表于 2025-3-30 10:05:08
Contributions to the Theory of Waves in Non-linear Dispersive Systems,itude or wavenumber over a distance of one wavelength is very small. For linear systems, such propagation is governed by the well-known theory of group velocity; there is “frequency dispersion”, in the sense that energy in components of different frequency is propagated at different group velocities
lanugo
发表于 2025-3-30 15:27:37
Wavetrains in Inhomogeneous Moving Media,aths known as rays. It is shown that, for a wide class of conservative systems in fluid dymamics changes in amplitude along the rays may be computed from conservation of wave action, which is defined as the wave energy divided by the intrinsic frequency. The intrinsic frequency is the frequency whic
依法逮捕
发表于 2025-3-30 18:39:03
Some Special Cases Treated by the Whitham Theory,cated for analytical or numerical treatment. It suggests, in fact, that the development of wave groups, whose parameters vary gradually enough, can be represented by much less complicated approximate equations, derived from the assumption that in each separate small region the waves are closely like
歌曲
发表于 2025-3-31 00:35:10
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stratum-corneum
发表于 2025-3-31 04:32:36
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exhilaration
发表于 2025-3-31 08:32:25
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怒目而视
发表于 2025-3-31 09:12:50
Pulsars,nouncement in February 1968 by the Cambridge group, it has become traditional to publish most of the new discoveries in letters to “Nature”. A fairly complete coverage of published work can be achieved by scanning the 1968 issues of “Nature”, “Science”, and “Astrophysical Journal Letters”.
健谈的人
发表于 2025-3-31 17:13:47
A Survey of Hyperbolic Systems of Conservation Laws in Two Dependent Variables,es . and ., and . and . are functions of x and ., -∞ < x <∞, t ≥ 0. We assume that the system (1) is hyperbolic, i. e., if we denote by ., the vector function ., then . has real and distinct eigenvalues λ.(u, v) < λ.(u, v), for all values of the argument (.) in question. We consider the Cauchy problem for the system (1).
outrage
发表于 2025-3-31 20:50:53
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模仿
发表于 2025-4-1 00:28:10
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