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SIAMREV
2010
114views more  SIAMREV 2010»
13 years 6 months ago
From Random Polygon to Ellipse: An Eigenanalysis
Suppose x and y are unit 2-norm n-vectors whose components sum to zero. Let P(x, y) be the polygon obtained by connecting (x1, y1), . . . , (xn, yn), (x1, y1) in order. We say that...
Adam N. Elmachtoub, Charles F. Van Loan
SIAMNUM
2010
108views more  SIAMNUM 2010»
13 years 6 months ago
Shear Locking in a Plane Elasticity Problem and the Enhanced Assumed Strain Method
The method of enhanced assumed strains (EAS) is a popular tool for avoiding locking phenomena, e.g., a remedy for shear locking in plane elasticity. We consider bending-dominated p...
Dietrich Braess, Pingbing Ming, Zhongci Shi
SIAMCO
2010
115views more  SIAMCO 2010»
13 years 6 months ago
Identification of Hammerstein Systems with Quantized Observations
This work is concerned with identification of Hammerstein systems whose outputs are measured by quantized sensors. The system consists of a memoryless nonlinearity that is polynomi...
Yanlong Zhao, Ji-Feng Zhang, Le Yi Wang, Gang Geor...
SIAMADS
2010
97views more  SIAMADS 2010»
13 years 6 months ago
Localized States in a Model of Pattern Formation in a Vertically Vibrated Layer
Abstract. We consider a novel asymptotic limit of model equations proposed to describe the formation of localized states in a vertically vibrated layer of granular material or visc...
J. H. P. Dawes, S. Lilley
COMPUTING
1999
128views more  COMPUTING 1999»
13 years 11 months ago
A Multigrid Method for Nonconforming FE-Discretisations with Application to Non-Matching Grids
Nonconforming finite element discretisations require special care in the construction of the prolongation andrestrictioninthemultigridprocess. Inthispaper,ageneralschemeisproposed...
Dietrich Braess, Maksimillian Dryja, Wolfgang Hack...
SIAMCOMP
2000
88views more  SIAMCOMP 2000»
13 years 11 months ago
On a Conjecture by Coffman, Flatto, and Wright on Stochastic Machine Minimization
We investigate a conjecture stated by Coffman, Flatto, and Wright within the context of a stochastic machine minimization problem with a hard deadline. We prove that the conjecture...
Nah-Oak Song, Demosthenis Teneketzis
COMBINATORICS
2004
74views more  COMBINATORICS 2004»
13 years 11 months ago
Voltage Graphs, Group Presentations and Cages
We construct smallest known trivalent graphs for girths 16 and 18. One construction uses voltage graphs, and the other coset enumeration techniques for group presentations. AMS Su...
Geoffrey Exoo
SIAMCO
2008
88views more  SIAMCO 2008»
13 years 11 months ago
On Local Transverse Feedback Linearization
Given a control-affine system and a controlled invariant submanifold, we present necessary and sufficient conditions for local feedback equivalence to a system whose dynamics tran...
Christopher Nielsen, Manfredi Maggiore
COMPGEOM
1994
ACM
14 years 3 months ago
Computing Many Faces in Arrangements of Lines and Segments
We present randomized algorithms for computing many faces in an arrangement of lines or of segments in the plane, which are considerably simpler and slightly faster than the previo...
Pankaj K. Agarwal, Jirí Matousek, Otfried S...
STOC
2006
ACM
121views Algorithms» more  STOC 2006»
14 years 11 months ago
Narrow proofs may be spacious: separating space and width in resolution
The width of a resolution proof is the maximal number of literals in any clause of the proof. The space of a proof is the maximal number of clauses kept in memory simultaneously if...
Jakob Nordström