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    SIAMSC
    2008
    192views more  SIAMSC 2008»
    Surface Mesh Smoothing, Regularization, and Feature Detection
    13 years 11 months ago
    Surface Mesh Smoothing, Regularization, and Feature Detection
    Download  people.cs.ubc.ca
    We describe a hybrid algorithm that is designed to reconstruct a piecewise smooth surface mesh from noisy input. While denoising, our method simultaneously regularizes triangle me...
    Hui Huang, Uri M. Ascher
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    SIAMSC
    2008
    111views more  SIAMSC 2008»
    An Algebraic Multigrid Approach Based on a Compatible Gauge Reformulation of Maxwell's Equations
    13 years 11 months ago
    An Algebraic Multigrid Approach Based on a Compatible Gauge Reformulation of Maxwell's Equations
    Download  www.sandia.gov
    With the rise in popularity of compatible finite element, finite difference and finite volume discretizations for the time domain eddy current equations, there has been a correspon...
    Pavel B. Bochev, Jonathan J. Hu, Christopher M. Si...
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    SIAMSC
    2008
    125views more  SIAMSC 2008»
    Hybrid Simulations of Reaction-Diffusion Systems in Porous Media
    13 years 11 months ago
    Hybrid Simulations of Reaction-Diffusion Systems in Porous Media
    Download  maeresearch.ucsd.edu
    Abstract. Hybrid or multiphysics algorithms provide an efficient computational tool for combining micro- and macroscale descriptions of physical phenomena. Their use becomes impera...
    Alexandre M. Tartakovsky, Daniel M. Tartakovsky, T...
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    SIAMSC
    2008
    191views more  SIAMSC 2008»
    ORBIT: Optimization by Radial Basis Function Interpolation in Trust-Regions
    13 years 11 months ago
    ORBIT: Optimization by Radial Basis Function Interpolation in Trust-Regions
    Download  www.optimization-online.org
    Abstract. We present a new derivative-free algorithm, ORBIT, for unconstrained local optimization of computationally expensive functions. A trust-region framework using interpolati...
    Stefan M. Wild, Rommel G. Regis, Christine A. Shoe...
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    SIAMSC
    2008
    198views more  SIAMSC 2008»
    Model Reduction for Large-Scale Systems with High-Dimensional Parametric Input Space
    13 years 11 months ago
    Model Reduction for Large-Scale Systems with High-Dimensional Parametric Input Space
    Download  acdl.mit.edu
    A model-constrained adaptive sampling methodology is proposed for reduction of large-scale systems with high-dimensional parametric input spaces. Our model reduction method uses a ...
    T. Bui-Thanh, Karen Willcox, Omar Ghattas
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    SIAMSC
    2008
    237views more  SIAMSC 2008»
    A Variational Shape Optimization Approach for Image Segmentation with a Mumford--Shah Functional
    13 years 11 months ago
    A Variational Shape Optimization Approach for Image Segmentation with a Mumford--Shah Functional
    Download  www.fiq.unl.edu.ar
    We introduce a novel computational method for a Mumford-Shah functional, which decomposes a given image into smooth regions separated by closed curves. Casting this as a shape opti...
    Günay Dogan, Pedro Morin, Ricardo H. Nochetto
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    SIAMSC
    2008
    123views more  SIAMSC 2008»
    Adaptive Mesh Refinement for Nonparametric Image Registration
    13 years 11 months ago
    Adaptive Mesh Refinement for Nonparametric Image Registration
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    Eldad Haber, Stefan Heldmann, Jan Modersitzki
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    SIAMSC
    2008
    140views more  SIAMSC 2008»
    Newton-GMRES Preconditioning for Discontinuous Galerkin Discretizations of the Navier--Stokes Equations
    13 years 11 months ago
    Newton-GMRES Preconditioning for Discontinuous Galerkin Discretizations of the Navier--Stokes Equations
    Download  raphael.mit.edu
    We study preconditioners for the iterative solution of the linear systems arising in the implicit time integration of the compressible Navier-Stokes equations. The spatial discreti...
    Per-Olof Persson, Jaime Peraire
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    SIAMSC
    2008
    97views more  SIAMSC 2008»
    Long-Time Simulations on High Resolution Meshes to Model Calcium Waves in a Heart Cell
    13 years 11 months ago
    Long-Time Simulations on High Resolution Meshes to Model Calcium Waves in a Heart Cell
    Download  userpages.umbc.edu
    Abstract. A model for the flow of calcium in an atrial heart cell is given by a system of timedependent reaction-diffusion equations coupled by non-linear reaction terms. Calcium i...
    Matthias K. Gobbert
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    SIAMSC
    2008
    126views more  SIAMSC 2008»
    Towards a Statistical Theory of Texture Evolution in Polycrystals
    13 years 11 months ago
    Towards a Statistical Theory of Texture Evolution in Polycrystals
    Download  math.gmu.edu
    Abstract. Most technologically useful materials possess polycrystalline microstructures composed of a large number of small monocrystalline grains separated by grain boundaries. Th...
    K. Barmak, M. Emelianenko, Dmitry Golovaty, David ...
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