SIAM Journal on Numerical Analysis, Vol. 41, No. 2 (2004), pp. 589-604 (16 pages) We study the computation of the orthogonal spline collocation solution of a linear Dirichlet boundary value problem ...
Abstract: The paper describes a new conjugate gradient algorithm for large scale nonconvex problems. In order to speed up the convergence the algorithm employs a scaling matrix which transforms the ...
Abstract: The structural characteristic is given by computerized tomography in non-destructive testing (NDT) of concrete. The position, size and style of inner defects can be shown. A Preconditioned ...
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