Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 6 of 6 for “"Nonlinear wave equation"”.
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Stochastic Wave Equations With Cubic Nonlinearities in Two Dimensions
… and quantative behavior of stochastic Wave equations with cubic nonlinearities in two dimensions. I evaluated the stochastic nonlinear wave equation in terms of its Fourier coecients. I proved that the strong solution of that equation exists and is unique on an appropriate Hilbert …
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Nonlinear dispersive equations with random initial data
… part of this thesis we consider the defocusing nonlinear wave equation of power-type on R3. We establish an almost sure global existence result with respect to a suitable randomization of the initial data. In particular, this provides examples of initial data of supercritical regularity which …
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Coalescence of nonlinear acoustic waves, with application to supersonic jet noise
… that occurs when neighboring acoustic waveforms propagate in nearly the same direction and intersect to form a larger-amplitude waveform with increased nonlinear distortion. Coalescence is proposed as an explanation for the observation of steepened Mach waveforms and crackle close to a …
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Measurement of the nonlinear refractive index (n2) and stimulated Raman scattering in optical fibers as a function of germania content, using the photorefractive beam coupling technique
… the understanding and control of optical fiber nonlinearities. While these nonlinearites limit the power handling capacity of optical fibers and can cause noise, signal distortion and cross talk in optically amplified transmission systems, they have been equally harnessed for the development of …
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Global in time existence and blow-up results for a semilinear wave equation with scale-invariant damping and mass
… results and blow-up result for a semilinear wave model with scale-invariant damping and mass. Since the time-dependent coefficients for the considered model make somehow the damping and the mass a threshold term between effective and non-effective terms, it turns out that a fundamental role …