180 citations · 198 across the 7 of their papers we have counts for
7 papers
A Spectral Projection Preconditioner for Solving Ill Conditioned Linear Systems
Man-Chung Yeung, Craig C. Douglas, Long Lee
We present a preconditioner based on spectral projection that is combined with a deflated Krylov subspace method for solving ill conditioned linear systems of equations. Our result…
An Improved Lower Bound for -Brinkhuis -Triples
Michael Sollami, Craig C. Douglas, Manfred Liebmann
Let be the number of words consisting of the ternary alphabet consisting of the digits 0, 1, and 2 such that no subword (or factor) is a square (a word concatenated with itse…
On Solving Ill-Conditioned Linear Systems
Craig C. Douglas, Long Lee, Man-Chung Yeung
This paper presents the first results to combine two theoretically sound methods (spectral projection and multigrid methods) together to attack ill-conditioned linear systems. Our…
Condition number estimates for matrices arising in NURBS based isogeometric discretizations of elliptic partial differential equations
Krishan P. S. Gahalaut, Satyendra K. Tomar, Craig. C. Douglas
We derive bounds for the minimum and maximum eigenvalues and the spectral condition number of matrices for isogeometric discretizations of elliptic partial differential equations i…
Real-Time Data Driven Wildland Fire Modeling
Jonathan D. Beezley, Soham Chakraborty, Janice L. Coen +4
We are developing a wildland fire model based on semi-empirical relations that estimate the rate of spread of a surface fire and post-frontal heat release, coupled with WRF, the We…
Towards a Real-Time Data Driven Wildland Fire Model
Jan Mandel, Jonathan D. Beezley, Soham Chakraborty +4
A wildland fire model based on semi-empirical relations for the spread rate of a surface fire and post-frontal heat release is coupled with the Weather Research and Forecasting atm…
A wildland fire model with data assimilation
Jan Mandel, Lynn S. Bennethum, Jonathan D. Beezley +4
A wildfire model is formulated based on balance equations for energy and fuel, where the fuel loss due to combustion corresponds to the fuel reaction rate. The resulting coupled pa…