Results 111 to 120 of about 174,528 (270)

Dynamical Analysis of an HIV Infection Model Including Quiescent Cells and Immune Response

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT This research gives a thorough examination of a human immunodeficiency virus (HIV) infection model that includes quiescent cells and immune response dynamics in the host. The model, represented by a system of ordinary differential equations, captures the complex interaction between the host's immune response and viral infection.
Ibrahim Nali, Attila Dénes, Abdessamad Tridane, Xueyong Zhou   +3 more
wiley   +1 more source

Correction and Addendum: ``Organization of a `Fixed-Plus-Variable' Structure Computer for Computation of Eigenvalues and Eigenvectors of Real Symmetric Matrices'' [PDF]

, 1962
Gerald Estrin, C.R. Viswanathan
openalex   +1 more source

General Gate Teleportation and the Inner Structure of Its Clifford Hierarchies

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT The quantum gate teleportation mechanism allows for the fault‐tolerant implementation of “Clifford hierarchies” of gates assuming, among other things, a fault‐tolerant implementation of the Pauli gates. We discuss how this method can be extended to assume the fault‐tolerant implementation of any orthogonal unitary basis of operators, in such a
Samuel González‐Castillo, Elías F. Combarro, Ignacio F. Rúa, José Ranilla   +3 more
wiley   +1 more source

Eigenpairs of adjacency matrices of balanced signed graphs

Special Matrices
In this article, we study eigenvalues λ\lambda and their associated eigenvectors xx of the adjacency matrices AA of balanced signed graphs. Balanced signed graphs were first introduced and studied by Harary to handle a problem in social psychology ...
Chen Mei-Qin
doaj   +1 more source

Analytical and experimental investigation of a 1/8-scale dynamic model of the shuttle orbiter. Volume 1: Summary report [PDF]

A 1/8-scale structural dynamics model of the space shuttle orbiter was analyzed using the NASA Structural Analysis System (NASTRAN). Comparison of the calculated eigenvalues with preliminary test data for the unrestrained condition indicate that the ...
Bernstein, M., Harris, H. G., Mason, P. W., Zalesak, J.   +3 more
core   +1 more source

Time‐resolved mapping of myocardial stiffness using 2D multifrequency spiral MR elastography with and without external vibration

Magnetic Resonance in Medicine, EarlyView.
Abstract Purpose There is a clinical need for stiffness mapping of the heart; however, current cardiac magnetic resonance elastography (cMRE) has limited spatiotemporal resolution. Therefore, we developed 2D spiral multifrequency MRE of the human heart and conducted a study to analyze the consistency and reproducibility of motion‐encoding and stiffness
Matthias S. Anders, Carsten Warmuth, Tom Meyer, Helge Herthum, Mehrgan Shahryari, Jakob Schattenfroh, Corona Metz, Jan Bieling, Josef Pfeuffer, Simon Veldhoen, Jeanette Schulz‐Menger, Tobias Schaeffter, Jing Guo, Heiko Tzschätzsch, Ingolf Sack   +14 more
wiley   +1 more source

A Method of Computing Eigenvectors and Eigenvalues on an Analog Computer [PDF]

, 1964
Lucien W. Neustadt
openalex   +1 more source

Uncertainty Quantification for Nonlinear Vibration of Supercritical Drive Shaft With a Dry Friction Damper

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT The supercritical drive shaft is becoming increasingly popular in helicopter transmission system. Dry friction dampers are specially employed to ensure the supercritical shafts crossing the critical speed safely. Due to design tolerances, manufacturing errors and time‐varying factors, the parameters of the damper are inherently uncertain ...
Liyao Song, Meijun Liao, Weifang Chen, Rupeng Zhu, Dan Wang   +4 more
wiley   +1 more source

On the Relations between Eigenvalues and Eigenvectors for Matrices Resulting from Pre and Post Multiplication by the Transpose [PDF]

, 1968
V. J. Law, R. H. Fariss
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