Results 71 to 80 of about 7,103 (240)

An eigenfunction expansion-variational method in prediction of the transverse thermal conductivity of fiber reinforced composites considering interfacial characteristics

open access: yes, 2010
An eigenfunction expansion-variational method based on a unit cell is developed to deal with the steady-state heat conduction problem of doubly-periodic fiber reinforced composites with interfacial thermal contact resistance or coating.
蒋持平   +8 more
core   +1 more source

Weighted Deformed Gram Matrices for Quantum‐Inspired Learning With Applications to Biomedical Signal Analysis

open access: yesEngineering Reports, Volume 8, Issue 6, June 2026.
Graphical abstract of the (q,τ)$$ \left(q,\tau \right) $$‐deformed kernel framework for quantum‐inspired learning and biomedical signal analysis ABSTRACT This paper introduces a weighted (q,τ)$$ \left(q,\tau \right) $$‐deformed Gram matrix framework for quantum‐inspired learning systems, with particular emphasis on applications in biomedical signal ...
Rabha W. Ibrahim   +2 more
wiley   +1 more source

Explicit closed-form expression for eigenfunction norms

open access: yes, 2001
An analytical expression is presented for calculating the eigenfunction norm for linear second-order Sturm-Liouville problems. This formula can be used to explicitly norm eigenfunctions.
Lockshin, J.L., J.L. Lockshin
core   +1 more source

From Stability to Chaos: A Complete Classification of the Damped Klein‐Gordon Dynamics

open access: yesMathematical Methods in the Applied Sciences, Volume 49, Issue 9, Page 9696-9708, June 2026.
ABSTRACT We investigate the transition between stability and chaos in the damped Klein‐Gordon equation, a fundamental model for wave propagation and energy dissipation. Using semigroup methods and spectral criteria, we derive explicit thresholds that determine when the system exhibits asymptotic stability and when it displays strong chaotic dynamics ...
Carlos Lizama   +2 more
wiley   +1 more source

Estimates for the ratio of the first two eigenvalues of the Dirichlet-Laplace operator with a drift [PDF]

open access: yesContributions to Mathematics, 2021
Serban Barbuleanu   +2 more
doaj   +1 more source

Eigenfunctions and nodal sets [PDF]

open access: yesSurveys in Differential Geometry, 2013
60 pages, 5 figures lifted from the web.
openaire   +2 more sources

Complex Eigenfunction Method for Bending Analysis of Rectangular Plates [PDF]

open access: yes, 1972
The present article will give a Fadle eigenfunction analysis of rectangular plates in flexure by means of complex matrix algebra. Rectangular plates have many structural applications, and their flexural analysis is thus of considerable importance.
TANIMOTO, Bennosuke   +2 more
core  

On the oscillation of differential transforms of eigenfunction expansions

open access: yes, 1983
This paper continues the study of Pólya and Wiener, Hille and Szegö into the connections between the oscillation of derivatives of a real function and its analytic character.
C. L. Prather, J. K. Shaw
core   +1 more source

Measurements of the eigenfunction of reversed shear Alfvén eigenmodes that sweep downward in frequency [PDF]

open access: yes, 2013
Reversed shear Alfvén eigenmodes (RSAEs) usually sweep upward in frequency when the minimum value of the safety factor qmin decreases in time. On rare occasions, RSAEs sweep downward prior to the upward sweep.
Spong, DA   +9 more
core   +1 more source

Convergence of generalized eigenfunction expansions

open access: yes, 2007
We present a simplified theory of generalized eigenfunction expansions for a commuting family of bounded operators and with finitely many unbounded operators.
Sakata, Mayumi
core   +1 more source

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