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SAC
1994
ACM
13 years 11 months ago
Fuzzy queries and relational databases
In this paper, the interest of fuzzy sets and possibility theory in the context of databases is presented. It is shown that these " notions provide an homogeneous framework f...
Patrick Bosc, Olivier Pivert
IJCM
2010
108views more  IJCM 2010»
13 years 6 months ago
Lifting solutions of quasilinear convection-dominated problems
The steady state of the quasilinear convection-diffusion-reaction equation ut − (D(u) u) + b(u) u + c(u) = 0 (1) is studied. Depending on the ratio between convection and diff...
J. A. Ferreira, A. P. Mouro, P. Oliveira
ICCS
2003
Springer
14 years 25 days ago
Transparent Boundary Conditions for Wave Propagation on Unbounded Domains
The numerical solution of the time dependent wave equation in an unbounded domain generally leads to a truncation of this domain,
Dorin-Cezar Ionescu, Heiner Igel
COMPUTING
2006
130views more  COMPUTING 2006»
13 years 7 months ago
Factorized Solution of Lyapunov Equations Based on Hierarchical Matrix Arithmetic
We investigate the numerical solution of large-scale Lyapunov equations with the sign function method. Replacing the usual matrix inversion, addition, and multiplication by format...
Ulrike Baur, Peter Benner
SCALESPACE
2007
Springer
14 years 1 months ago
Numerical Invariantization for Morphological PDE Schemes
Abstract. Based on a new, general formulation of the geometric method of moving frames, invariantization of numerical schemes has been established during the last years as a powerf...
Martin Welk, Pilwon Kim, Peter J. Olver