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An Alternative Nonlinear Diffusion Algorithm for Image Denoising and Deblurring
We discuss some applications in image restoration and enhancement, such as denoising and deblurring. The treatment involves a processing algorithm where an image is represented in a continuous frame and is manipulated through suitable time-dependent nonlinear Partial Differential Equations (PDEs). For this purpose, an ad-hoc space discretization schemeLorella Fatone, Daniele Funaro
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Nonlinear effects in alternating-gradient synchrotrons
Annals of Physics, 1958Abstract Nonlinear effects in alternating-gradient synchrotrons are responsible for resonances in the betatron-oscillation mechanism over and above those which arise in linear theory. These effects are here investigated by means of a perturbation procedure which leads directly to practical formulas.
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An alternate view of nonlinear adaptive filters
2010 Conference Record of the Forty Fourth Asilomar Conference on Signals, Systems and Computers, 2010Nonlinear adaptive filters have been developed mostly using polynomial models such as truncated Volterra series, Weiner and Hammerstein models and utilizing linear adaptive algorithms such as NLMS, RLS, APA.
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Alternative Conditions for an Extremum in Nonlinear Programming
1998In the first chapter we considered two elementary examples of nonlinear programming problems in the Euclidean plane as illustrations of the alternative conditions for an extremum (see Examples 1.30 and 1.31). The main goal of this chapter is to obtain special alternative conditions for an extremum for a general nonlinear programming problem ...
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Alternative integrable equations of nonlinear optics
Physical Review A, 1994, Burtsev, , Gabitov
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A nonlinear alternative to the unit root hypothesis [PDF]
, 2003 This paper considers testing the unit root hypothesis against a smooth transition autoregressive model as the alternative. The model specification makes it possible to discriminate between nonstationary random walk and stationary nonlinear processes. Some new limit results are presented, extending earlier work, and two F type tests are proposed.
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Nonlinear alternating-current tunneling microscopy
Physical Review Letters, 1989openaire +2 more sources