Results 11 to 20 of about 766,232 (282)

Stability Criterion of Subsynchronous Oscillation of Direct Drive Permanent Magnet Synchronous Generator Based on Impedance Polynomial Fitting

open access: yes发电技术, 2020
Impedance analysis is the leading method of solving the stability issues of grid-connected renewable energy generation systems. Taking the grid-connected system of direct drive permanent magnet synchronous generator (D-PMSG) as an example, the ...
Yongjun YU   +4 more
doaj   +1 more source

Probabilistic small-signal stability analysis of power systems based on Hermite polynomial approximation

open access: yesSN Applied Sciences, 2021
This paper proposes a probabilistic small-signal stability analysis method based on the polynomial approximation approach. Since the correct determination of unknown coefficients has a direct effect on the accuracy of the polynomial approximation method,
Ali Mohammad Tabrizchi   +1 more
doaj   +1 more source

Limitations of the Macaulay matrix approach for using the HHL algorithm to solve multivariate polynomial systems [PDF]

open access: yesQuantum, 2023
Recently Chen and Gao \cite{ChenGao2017} proposed a new quantum algorithm for Boolean polynomial system solving, motivated by the cryptanalysis of some post-quantum cryptosystems.
Jintai Ding   +4 more
doaj   +1 more source

The Zhegalkin Polynomial of Multiseat Sole Sufficient Operator

open access: yesМоделирование и анализ информационных систем, 2023
Among functionally complete sets of Boolean functions, sole sufficient operators are of particular interest. They have a wide range of applicability and are not limited to the two-seat case.
Leonid Y. Bystrov, Egor V. Kuzmin
doaj   +1 more source

Solving parametric polynomial systems

open access: yesJournal of Symbolic Computation, 2007
The authors present a new algorithm for solving constructible or semi-algebraic systems in the indeterminates \([U,X]\) where \(U=[U_1,\dots ,U_d]\) is the set of parameters and \(X=[X_{d+1},\dots,X_n]\) the set of unknowns. To this end, they study the characterization of open subsets in the parameter space over which the number of solutions is ...
Lazard, Daniel, Rouillier, Fabrice
openaire   +5 more sources

RESOLUTION OF POLYNOMIAL SYSTEMS [PDF]

open access: yesComputer Mathematics, 2000
In this talk, the state of the art of solving polynomial system by algebraic methods is sketched, and the main directions where future work is needed are indicated.
openaire   +2 more sources

MultiRegeneration for polynomial system solving [PDF]

open access: yesACM Communications in Computer Algebra, 2020
We demonstrate our implementation of a continuation method as described in [7] for solving polynomials systems. Given a sequence of (multi)homogeneous polynomials, the software multiregeneration outputs the respective (multi)degree in a wide range of cases and partial multidegree in all others.
Crowley, Colin   +3 more
openaire   +2 more sources

Approximate Analytical Methodology for the Restricted Three-Body and Four-Body Models Based on Polynomial Series

open access: yesInternational Journal of Aerospace Engineering, 2016
The restricted three-body problem (R3BP) and restricted four-body problem (R4BP) are modeled based on the rotating frame. The conservative autonomous system for the R3BP and nonautonomous system with period parametric resonance due to the fourth body are
Ying-Jing Qian   +3 more
doaj   +1 more source

An Efficient Polynomial Chaos Method for Stiffness Analysis of Air Spring Considering Uncertainties

open access: yesComplexity, 2021
Traditional methods for stiffness analysis of the air spring are based on deterministic assumption that the parameters are fixed. However, uncertainties have widely existed, and the mechanic property of the air spring is very sensitive to these ...
Feng Kong, Penghao Si, Shengwen Yin
doaj   +1 more source

A Novel Sparse Polynomial Expansion Method for Interval and Random Response Analysis of Uncertain Vibro-Acoustic System

open access: yesShock and Vibration, 2021
For the vibro-acoustic system with interval and random uncertainties, polynomial chaos expansions have received broad and persistent attention. Nevertheless, the cost of the computation process increases sharply with the increasing number of uncertain ...
Shengwen Yin, Xiaohan Zhu, Xiang Liu
doaj   +1 more source

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