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Bjørn Fredrik Nielsen

Observed names: B. F. Nielsen, B.F. Nielsen, Bjorn Fredrik Nielsen, Bjørn F. Nielsen, Bjørn Frederik Nielsen, Bjørn Nielsen, Nielsen, Bjørn Fredrik
Observed institutions: Oslo University Hospital, Norwegian Computing Center, University of Oslo, Norwegian University of Science and Technology, Charles University, Simula Research Laboratory, Norwegian University of Life Sciences
ORCID: 0000-0002-3747-7828
Observed ORCID: 0000-0002-3747-7828
OpenAlex ID: A5068806959
Computing the Electrical Activity in the Heart
2006 · Sundnes, Joakim, Lines, Glenn Terje, et al. · Springer eBooks · 322
Penalty and front-fixing methods for the numerical solution of American option problems
2002 · Bjørn Fredrik Nielsen, Ola Skavhaug, et al. · The Journal of Computational Finance · 174
Parameter Estimation and Inverse Problems
2010 · Aslak Tveito, Hans Petter Langtangen, et al. · Texts in computational science and engineering · 166
Global Upscaling of Permeability in Heterogeneous Reservoirs; The Output Least Squares (OLS) Method
2000 · L. Holden, B. F. Nielsen · Transport in Porous Media · 136
On the Computational Complexity of the Bidomain and the Monodomain Models of Electrophysiology
2006 · Joakim Sundnes, Bjørn Fredrik Nielsen, et al. · Annals of Biomedical Engineering · 126
Stochastic Structural Modeling
2003 · Lars Holden, Petter Mostad, et al. · Mathematical Geology · 85
Penalty methods for the numerical solution of American multi-asset option problems
2007 · Bjørn Fredrik Nielsen, Ola Skavhaug, et al. · Journal of Computational and Applied Mathematics · 84
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Havana — a fault modeling tool
2002 · Knut Hollund, Petter Mostad, et al. · Norwegian Petroleum Society Special publication/Special publication - Norwegian Petroleum Society, NPF · 54
An upscaling method for one‐phase flow in heterogeneous reservoirs. A weighted output least squares (WOLS) approach
1998 · Bjørn Fredrik Nielsen, Aslak Tveito · Computational Geosciences · 53
Optimal monodomain approximations of the bidomain equations
2006 · Bjørn Fredrik Nielsen, Tomas Syrstad Ruud, et al. · Applied Mathematics and Computation · 50
Computing Ischemic Regions in the Heart With the Bidomain Model—First Steps Towards Validation
2013 · B. F. Nielsen, M. Lysaker, et al. · IEEE Transactions on Medical Imaging · 48
An order optimal solver for the discretized bidomain equations
2006 · Kent‐Andre Mardal, Bjørn Fredrik Nielsen, et al. · Numerical Linear Algebra with Applications · 44
On the use of the resting potential and level set methods for identifying ischemic heart disease: An inverse problem
2006 · Bjørn Fredrik Nielsen, Marius Lysaker, et al. · Journal of Computational Physics · 40
On the possibility for computing the transmembrane potential in the heart with a one shot method: An inverse problem
2007 · Bjørn Fredrik Nielsen, Xing Cai, et al. · Mathematical Biosciences · 39
A Finite Element Method for Fully Nonlinear Water Waves
1998 · Xing Cai, Hans Petter Langtangen, et al. · Journal of Computational Physics · 39
Laplacian Preconditioning of Elliptic PDEs: Localization of the Eigenvalues of the Discretized Operator
2019 · Tomáš Gergelits, Kent-André Mardal, et al. · SIAM Journal on Numerical Analysis · 33
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Robust preconditioners for PDE-constrained optimization with limited observations
2016 · Kent-André Mardal, Bjørn Fredrik Nielsen, et al. · BIT Numerical Mathematics · 29
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Computing the Size and Location of Myocardial Ischemia Using Measurements of ST-Segment Shift
2006 · M.C. Maclachlan, B.F. Nielsen, et al. · IEEE Transactions on Biomedical Engineering · 29
Elements of Scientific Computing
2010 · Aslak Tveito, Hans Petter Langtangen, et al. · Texts in computational science and engineering · 23
A Computationally Efficient Method for Determining the Size and Location of Myocardial Ischemia
2008 · T.S. Ruud, B.F. Nielsen, et al. · IEEE Transactions on Biomedical Engineering · 20
Stability analysis of the inverse transmembrane potential problem in electrocardiography
2010 · Martin Burger, Kent-André Mardal, et al. · Inverse Problems · 19
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Preconditioning by inverting the Laplacian: an analysis of the eigenvalues
2008 · B. F. Nielsen, A. Tveito, et al. · IMA Journal of Numerical Analysis · 19
Finite Element Discretizations of Elliptic Problems in the Presence of Arbitrarily Small Ellipticity: An Error Analysis
1999 · Bjørn Fredrik Nielsen · SIAM Journal on Numerical Analysis · 18
A regularization operator for source identification for elliptic PDEs
2020 · Ole Løseth Elvetun, Bjørn Fredrik Nielsen · Inverse Problems and Imaging · 13
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Analysis of the Minimal Residual Method Applied to Ill Posed Optimality Systems
2013 · Bjørn Fredrik Nielsen, Kent-Andre Mardal · SIAM Journal on Scientific Computing · 13
Works count: 88
Citation count: 1,834
H-index: 20
I10-index: 31
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