Results 41 to 50 of about 279,536 (273)

Numerical inversion of finite Toeplitz matrices and vector Toeplitz matrices [PDF]

open access: yes, 1968
Numerical technique increases the efficiencies of the numerical methods involving Toeplitz matrices by reducing the number of multiplications required by an N-order Toeplitz matrix from N-cubed to N-squared multiplications.
Bareiss, E. H.
core   +2 more sources

Inverse Numerator Relationship Matrix Approximation

open access: yesJournal of Dairy Science, 1989
Abstract Genetic evaluation by BLUP requires knowledge of the inverse numerator relationship matrix among breeding values. When pedigree information is complete, the true relationship matrix can be determined and an exact inverse found. When pedigree information is incomplete, an exact inverse of an approximate relationship matrix is obtainable.
J.F. Taylor, M.A. Tomaszewski
openaire   +1 more source

Structural insights into lacto‐N‐biose I recognition by a family 32 carbohydrate‐binding module from Bifidobacterium bifidum

open access: yesFEBS Letters, EarlyView.
Bifidobacterium bifidum establishes symbiosis with infants by metabolizing lacto‐N‐biose I (LNB) from human milk oligosaccharides (HMOs). The extracellular multidomain enzyme LnbB drives this process, releasing LNB via its catalytic glycoside hydrolase family 20 (GH20) lacto‐N‐biosidase domain.
Xinzhe Zhang   +5 more
wiley   +1 more source

Distribution functions of magnetic nanoparticles determined by a numerical inversion method

open access: yesNew Journal of Physics, 2017
In the present study, we applied a regularized inversion method to extract the particle size, magnetic moment and relaxation-time distribution of magnetic nanoparticles from small-angle x-ray scattering (SAXS), DC magnetization (DCM) and AC ...
P Bender   +13 more
doaj   +1 more source

Production Dynamic of Coal-bed Methane After Well Pressure Based on Multi-layer Perceptron Model Inversion Study

open access: yesCejing jishu, 2023
The inversion of production performance after fracturing of coal-bed methane well is the key technology to realize the efficient development of gas reservoir.
LI Jingsong   +5 more
doaj   +1 more source

The accurate numerical inversion of laplace transforms [PDF]

open access: yes, 1976
Inversion of almost arbitrary Laplace transforms is effected by trapezoidal integration along a special contour. The number n of points to be used is one of several parameters, in most cases yielding absolute errors of order 10-7 for n = 10, 10-11 for n
Tablot, A
core  

A spectral order method for inverting sectorial Laplace transforms

open access: yes, 2005
Laplace transforms which admit a holomorphic extension to some sector strictly containing the right half plane and exhibiting a potential behavior are considered. A spectral order, parallelizable method for their numerical inversion is proposed.
López-Fernández, María   +2 more
core   +1 more source

Ensemble Kalman filter for neural network based one-shot inversion

open access: yes, 2020
We study the use of novel techniques arising in machine learning for inverse problems. Our approach replaces the complex forward model by a neural network, which is trained simultaneously in a one-shot sense when estimating the unknown parameters from ...
Guth, Philipp A.   +2 more
core   +1 more source

New method for nonparaxial beam propagation [PDF]

open access: yes, 2004
A new method for solving the wave equation is presented that is nonparaxial and can be applied to wide-angle beam propagation. It shows very good stability characteristics in the sense that relatively larger step sizes can be taken.
Anurag Sharma   +19 more
core   +1 more source

Peptide‐based ligand antagonists block a Vibrio cholerae adhesin

open access: yesFEBS Letters, EarlyView.
The structure of a peptide‐binding domain of the Vibrio cholerae adhesin FrhA was solved by X‐ray crystallography, revealing how the inhibitory peptide AGYTD binds tightly at its Ca2+‐coordinated pocket. Structure‐guided design incorporating D‐amino acids enhanced binding affinity, providing a foundation for developing anti‐adhesion therapeutics ...
Mingyu Wang   +9 more
wiley   +1 more source

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