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» On Popovski's method for nonlinear equations
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CPHYSICS
2004
79views more  CPHYSICS 2004»
14 years 9 months ago
Hybrid kinetic-MHD simulations in general geometry
We present a hybrid kinetic-MHD model consisting of 3 species, the bulk fluid ions and electrons, and a kinetic minority hot particle species. The 3 species equations are derived ...
Charlson C. Kim, Carl R. Sovinec, Scott E. Parker
IFIP
2007
Springer
15 years 3 months ago
Elliptic Control by Penalty Techniques with Control Reduction
The paper deals with the numerical treatment of optimal control problems with bounded distributed controls and elliptic state equations by a wider class of barrier-penalty methods...
Christian Grossmann, Holger Kunz, Robert Meischner
SCALESPACE
2009
Springer
15 years 4 months ago
An Edge-Preserving Multilevel Method for Deblurring, Denoising, and Segmentation
We present a fast edge-preserving cascadic multilevel image restoration method for reducing blur and noise in contaminated images. The method also can be applied to segmentation. O...
Serena Morigi, Lothar Reichel, Fiorella Sgallari
101
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SIAMAM
2002
122views more  SIAMAM 2002»
14 years 9 months ago
A Level Set Method for Anisotropic Geometric Diffusion in 3D Image Processing
A new morphological multiscale method in 3D image processing is presented which combines the image processing methodology based on nonlinear diffusion equations and the theory of g...
Martin Rumpf, Tobias Preußer
PROCEDIA
2010
173views more  PROCEDIA 2010»
14 years 7 months ago
Combination of an adaptive multilevel SQP method and a space-time adaptive PDAE solver for optimal control problems
We present an adaptive multilevel generalized SQP method to solve PDAE-constrained optimization problems. It explicitly allows the use of independent integration schemes such that...
Debora Clever, Jens Lang, Stefan Ulbrich, J. Carst...