Results 111 to 120 of about 130,152 (295)

Small-signal stability analysis for two-area interconnected power system with load frequency controller in coordination with FACTS and energy storage device

Ain Shams Engineering Journal, 2016
This paper deals with the modelling and small signal stability analysis for the two areas interconnected power system using a load frequency controller. The eigenvalues and the participation factor analysis are used to examine the small signal stability ...
Ravi Shankar, Ravi Bhushan, Kalyan Chatterjee   +2 more
doaj   +1 more source

Studies in Perturbation Theory. XI. Lower Bounds to Energy Eigenvalues, Ground State, and Excited States [PDF]

, 1965
Per‐Olov Löwdin
openalex   +1 more source

On the perturbation series for eigenvalues and eigenprojections

, 2019
A standard perturbation result states that perturbed eigenvalues and eigenprojections admit a perturbation series provided that the operator norm of the perturbation is smaller than a constant times the corresponding eigenvalue isolation distance. In this paper, we show that the same holds true under a weighted condition, where the perturbation is ...
openaire   +3 more sources

Impact of slug length in gas–liquid two‐phase flow on the structural stress characteristics of horizontal rigid pipelines

The Canadian Journal of Chemical Engineering, EarlyView.
Data collection and processing of slug length in two‐phase flow‐induced stress analysis. Abstract The intermittent passage of liquid slugs and gas pockets in slug flow generates substantial cyclic stress damage to piping systems and their supports. This issue poses significant challenges to the various industries in which this flow pattern is present ...
Abdalellah O. Mohmmed, Hussain H. Al‐Kayiem, Abderraouf Arabi   +2 more
wiley   +1 more source

Perturbation bounds for eigenvalues of diagonalizable matrices and singular values

Journal of Inequalities and Applications, 2016
Perturbation bounds for eigenvalues of diagonalizable matrices are derived. Perturbation bounds for singular values of arbitrary matrices are also given. We generalize some existing results.
Duanmei Zhou, Guoliang Chen, Guoxing Wu, Xiaoyan Chen   +3 more
doaj   +1 more source

On nonlinear perturbations of the eigenvalues of a compact self-adjoint operator [PDF]

, 1967
Melvyn S. Berger
openalex   +1 more source

Free energy expansions of a conditional GinUE and large deviations of the smallest eigenvalue of the LUE

Communications on Pure and Applied Mathematics, EarlyView.
Abstract We consider a planar Coulomb gas ensemble of size N$N$ with the inverse temperature β=2$\beta =2$ and external potential Q(z)=|z|2−2clog|z−a|$Q(z)=|z|^2-2c \log |z-a|$, where c>0$c>0$ and a∈C$a \in \mathbb {C}$. Equivalently, this model can be realised as N$N$ eigenvalues of the complex Ginibre matrix of size (c+1)N×(c+1)N$(c+1) N \times (c+1)
Sung‐Soo Byun, Seong‐Mi Seo, Meng Yang   +2 more
wiley   +1 more source

Thermoelastic Cylinder Subjected to Suddenly Applied Radial Symmetric Pressure

Engineering Transactions, 1986
Stresses, temperature and oscillations of a thermoelastic cylinder suddenly cxposed to the radial symmetric pressure are analyzed in the paper. Solution of the corresponding eigen­value problem is obtained by means of the perturbation technique, so that
M.M. Marjanov
doaj  

Another instructive example in eigenvalue perturbation theory [PDF]

, 1979
M. P. Fry
openalex   +1 more source

Perturbation of unstable eigenvalues of finite multiplicity

Journal of Functional Analysis, 1976
AbstractWe investigate perturbations of the form H(z) + zV(z) and the behavior of isolated and embedded eigenvalues λ0 of finite multiplicity of H0 = H(0), assuming analytic continuability of certain factorized resolvents. Spectral concentration and conditions of instability are given in terms of virtual poles.
H. Baumgärtel, Michael Demuth
openaire   +3 more sources