Results 81 to 90 of about 1,668 (228)

Rayleigh-Ritz Majorization Error Bounds for the Linear Response Eigenvalue Problem

open access: yesOpen Mathematics, 2019
In the linear response eigenvalue problem arising from computational quantum chemistry and physics, one needs to compute a few of smallest positive eigenvalues together with the corresponding eigenvectors.
Teng Zhongming, Zhong Hong-Xiu
doaj   +1 more source

Free Vibration Analysis of Cylindrical Shell from Fiberglass with Navier Boundary Conditions

open access: yesМеханика машин, механизмов и материалов, 2011
The analytical solution of approximate natural frequencies for the free vibration of cylindrical shells of GFRP (glass fiber reinforced plastic) with Navier boundary conditions is presented using the Rayleigh-Ritz method, while the winding angle varies ...
S.M. Bosiakov , W. Zhiwei
doaj  

On the application of the Rayleigh–Ritz method to a projected Hamiltonian

open access: yesJournal of Mathematical Chemistry
We apply the well known Rayleigh-Ritz method (RRM) to the projection of a Hamiltonian operator chosen recently for the extension of the variational principle to ensemble states. By means of a toy model we show that the RRM eigenvalues approach to those of the projected Hamiltonian from below.
openaire   +2 more sources

INFLUENCE OF THE LENGHTS RATIO TO THE STATIC ANSWER IN THE MOVEMENT OF A ROAD DECK [PDF]

open access: yesFiabilitate şi Durabilitate, 2017
The article presents a method to obtaining the static response bridge-vehicle system in displacements,and the influence of the lengths ratio of the deck bridge on this response.
Ovidiu GAVRIŞ
doaj  

6Po-6Pe transitions in boron-like S ion

open access: yes四川大学学报. 自然科学版, 2016
The transition oscillator strengths, transition rates, and wavelengths for electric dipole transitions between 1s2s2p2np 6Po (n=3-9), and 1s2s2p2n's, 1s2s2p2n'd 6Pe (n=3-5) sextet Rydberg states of boron-like S ion are calculated using the multi ...
SUN Yan   +4 more
doaj  

The Post-Buckling Behaviour of Thin-Walled Columns in the Elasto-Plastic Range

open access: yesEngineering Transactions, 1986
The post-buckling behaviour in the elasto-plastic range of thin-walled, steel columns subject to uniform compression is analysed. The problem is solved using the Rayleigh-Ritz variational method involving plasticity.
K. Kowal-Michalska, R. Grądzki
doaj  

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