Nancy K. Nichols

According to our database, Nancy K. Nichols authored at least 13 papers between 1966 and 2024.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of three.

2024

Conditioning of hybrid variational data assimilation.

Shaerdan Shataer, Amos S. Lawless, Nancy K. Nichols

Numer. Linear Algebra Appl., March, 2024

2022

New bounds on the condition number of the Hessian of the preconditioned variational data assimilation problem.

Jemima M. Tabeart, Sarah L. Dance, Amos S. Lawless, Nancy K. Nichols, Joanne A. Waller

Numer. Linear Algebra Appl., 2022

2020

The conditioning of least squares problems in preconditioned variational data assimilation.

Jemima M. Tabeart, Sarah L. Dance, Amos S. Lawless, Nancy K. Nichols, Joanne A. Waller

CoRR, 2020

2018

The conditioning of least-squares problems in variational data assimilation.

Jemima M. Tabeart, Sarah L. Dance, Stephen A. Haben, Amos S. Lawless, Nancy K. Nichols, Joanne A. Waller

Numer. Linear Algebra Appl., 2018

Observation impact, domain length and parameter estimation in data assimilation for flood forecasting.

Elizabeth S. Cooper, Sarah L. Dance, Javier García-Pintado, Nancy K. Nichols, Polly J. Smith

Environ. Model. Softw., 2018

2016

Diagnosing Horizontal and Inter-Channel Observation Error Correlations for SEVIRI Observations Using Observation-Minus-Background and Observation-Minus-Analysis Statistics.

Joanne A. Waller, Susan P. Ballard, Sarah L. Dance, Graeme Kelly, Nancy K. Nichols, David Simonin

Remote. Sens., 2016

2007

Approximate Gauss-Newton Methods for Nonlinear Least Squares Problems.

Serge Gratton, Amos S. Lawless, Nancy K. Nichols

SIAM J. Optim., 2007

2001

Robust Eigenstructure Assignment in Quadratic Matrix Polynomials: Nonsingular Case.

Nancy K. Nichols, Jaroslav Kautsky

SIAM J. Matrix Anal. Appl., 2001

Robust pole assignment in descriptor linear systems via state feedback.

Guang-Ren Duan, Nancy K. Nichols, Guo-Ping Liu

Proceedings of the 6th European Control Conference, 2001

1994

Regularization of descriptor systems by output feedback.

Angelika Bunse-Gerstner, Volker Mehrmann, Nancy K. Nichols

IEEE Trans. Autom. Control., 1994

1992

Regularization of Descriptor Systems by Derivative and Proportional State Feedback.

Angelika Bunse-Gerstner, Volker Mehrmann, Nancy K. Nichols

SIAM J. Matrix Anal. Appl., 1992

1984

Smoothed histogram modification for image processing.

Jaroslav Kautsky, Nancy K. Nichols, David L. B. Jupp

Comput. Vis. Graph. Image Process., 1984

1966

Matrix iterative methods for elliptic differential equations.

Nancy K. Nichols

PhD thesis, 1966