Results 111 to 120 of about 197,057 (337)

The Effect of Voxel Volume and Voxel Shape on Cardiac Diffusion Tensor Imaging Metrics

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Cardiac diffusion tensor imaging (cDTI) is signal‐to‐noise ratio (SNR)‐limited due to diffusion signal attenuation, long echo times from gradient moment nulling, and moderate myocardial T2$$ {}_2 $$. Increasing voxel volume improves SNR but reduces spatial sensitivity and introduces physiological bias.
Ariel J. Hannum, Tyler E. Cork, Kawin Setsompop, Daniel B. Ennis   +3 more
wiley   +1 more source

Eigenvalues and eigenvectors of Hilbert matrices of order 3 through 10 [PDF]

, 1967
Henry E. Fettis, James C. Caslin
openalex   +1 more source

Ellipsoid‐Based Interval‐Type Uncertainty Model Updating Based on Riemannian Manifold and Gaussian Process Model

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Modern engineering systems require advanced uncertainty‐aware model updating methods that address parameter correlations beyond conventional interval analysis. This paper proposes a novel framework integrating Riemannian manifold theory with Gaussian Process Regression (GPR) for systems governed by Symmetric Positive‐Definite (SPD) matrix ...
Yanhe Tao, Qintao Guo, Jin Zhou, Cheng Yi   +3 more
wiley   +1 more source

Sensitivity Analysis of Eigenvalues for PDNT Toeplitz Matrices

Axioms
This study focuses on a class of perturbed Dirichlet–Neumann tridiagonal (PDNT) Toeplitz matrices, mainly exploring their eigenvalue sensitivity and inverse problems. By the explicit expressions for eigenvalues and eigenvectors of PDNT Toeplitz matrices,
Zhaolin Jiang, Hongxiao Chu, Qiaoyun Miao, Ziwu Jiang   +3 more
doaj   +1 more source

Accuracy of genomic BLUP when considering a genomic relationship matrix based on the number of the largest eigenvalues: a simulation study

Genetics Selection Evolution, 2019
Background The dimensionality of genomic information is limited by the number of independent chromosome segments (M e ), which is a function of the effective population size.
Ivan Pocrnic, Daniela A. L. Lourenco, Yutaka Masuda, Ignacy Misztal   +3 more
doaj   +1 more source

Fast and backward stable computation of the eigenvalues and eigenvectors of matrix polynomials [PDF]

, 2016
Jared L. Aurentz, Thomas Mach, Leonardo Robol, Raf Vandebril, David S. Watkins   +4 more
openalex   +1 more source

Eigenvalues, eigenvector-overlaps, and regularized Fuglede-Kadison determinant of the non-Hermitian matrix-valued Brownian motion [PDF]

, 2023
Syota Esaki, Makoto Katori, Satoshi Yabuoku   +2 more
openalex   +1 more source

Dynamic Behavior of a Two‐Degree‐of‐Freedom System With Electromagnetic Interaction via a Skew‐Symmetric Matrix

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT This paper analyzes the dynamic behavior of a two‐degree‐of‐freedom system subjected to electromagnetic interaction modelled through a skew‐symmetric coupling matrix. The system comprises two mechanically independent oscillators coupled by velocity‐dependent electromagnetic forces.
Fernando Cortés, Ondiz Zarraga, Julen Cortazar‐Noguerol, Imanol Sarría, María Jesús Elejabarrieta   +4 more
wiley   +1 more source

Eigenvalues and eigenvectors of symmetric matrices, case 320 [PDF]

Eigenvalues and eigenvectors of symmetric matrices using FORTRAN 4 ...
Vandergraft, J. S.
core   +1 more source

Is an ecosystem perspective sufficient to understand meta‐ecosystem processes? A critical reflection

Oikos, EarlyView.
Meta‐ecosystems are the largest and probably most complex structures investigated in ecology. Because of their complexity they are often separated into their respective sub‐systems and then studied in isolation. This is often done without analysing whether an understanding of the individual ecosystems can lead to a proper understanding of the meta ...
Jurg W. Spaak, Mirco Bundschuh, Martin H. Entling, Ralf B. Schäfer, Ralf Schulz   +4 more
wiley   +1 more source