Zobrazeno 1 - 10
of 201
pro vyhledávání: '"Wathen, A. J."'
The Golub-Welsch algorithm [ Math. Comp., 23: 221-230 (1969)] has long been assumed symmetric for estimating quadratic forms. Recent research indicates that asymmetric quadrature nodes may be more often and the existence of a practical symmetric quad
Externí odkaz:
http://arxiv.org/abs/2401.17757
Parallel-in-time methods have become increasingly popular in the simulation of time-dependent numerical PDEs, allowing for the efficient use of additional MPI processes when spatial parallelism saturates. Most methods treat the solution and paralleli
Externí odkaz:
http://arxiv.org/abs/2101.07003
Autor:
Abraham, John B. S., Gutgsell, Cameron, Todorovski, Dalibor, Sperling, Scott, Epstein, Jacob E., Tien-Street, Brian S., Sweeney, Timothy M., Wathen, Jeremiah J., Pogue, Elizabeth A., Brereton, Peter G., McQueen, Tyrel M., Frey, Wesley, Clader, B. D., Osiander, Robert
Publikováno v:
Phys. Rev. Applied 15, 064022 (2021)
Silicon Carbide is a promising host material for spin defect based quantum sensors owing to its commercial availability and established techniques for electrical and optical microfabricated device integration. The negatively charged silicon vacancy i
Externí odkaz:
http://arxiv.org/abs/2011.01137
It is an important inferential problem to test no association between two binary variables based on data. Tests based on the sample odds ratio are commonly used. We bring in a competing test based on the Pearson correlation coefficient. In particular
Externí odkaz:
http://arxiv.org/abs/1912.11466
Autor:
Zhu, Shengxin, Wathen, Andrew J
Algorithms for Gaussian process, marginal likelihood methods or restricted maximum likelihood methods often require derivatives of log determinant terms. These log determinants are usually parametric with variance parameters of the underlying statist
Externí odkaz:
http://arxiv.org/abs/1911.00685
For both isothermal and thermal petroleum reservoir simulation, the Constrained Pressure Residual (CPR) method is the industry-standard preconditioner. This method is a two-stage process involving the solution of a restricted pressure system. While i
Externí odkaz:
http://arxiv.org/abs/1907.04229
In petroleum reservoir simulation, the industry standard preconditioner, the constrained pressure residual method (CPR), is a two-stage process which involves solving a restricted pressure system with Algebraic Multigrid (AMG). Initially designed for
Externí odkaz:
http://arxiv.org/abs/1902.00095
Autor:
Zhu, Shengxin, Wathen, Andrew J
The restricted maximum likelihood method enhances popularity of maximum likelihood methods for variance component analysis on large scale unbalanced data. As the high throughput biological data sets and the emerged science on uncertainty quantificati
Externí odkaz:
http://arxiv.org/abs/1805.05188
Publikováno v:
SIAM J. Sci. Comput., 2015, 37(5), A2270-A2294
For a prescribed porosity, the coupled magma/mantle flow equations can be formulated as a two-field system of equations with velocity and pressure as unknowns. Previous work has shown that while optimal preconditioners for the two-field formulation c
Externí odkaz:
http://arxiv.org/abs/1411.5235
Publikováno v:
SIAM J. Sci. Comput., 36(4), A1960-A1977
This article considers the iterative solution of a finite element discretisation of the magma dynamics equations. In simplified form, the magma dynamics equations share some features of the Stokes equations. We therefore formulate, analyse and numeri
Externí odkaz:
http://arxiv.org/abs/1311.6372