Results 61 to 70 of about 7,955 (262)

Modeling and parameter estimation for fractional large‐scale interconnected Hammerstein systems

open access: yesAsian Journal of Control, EarlyView.
Abstract This paper addresses the challenge of modeling and identifying large‐scale interconnected systems exhibiting memory effects, hereditary properties, and non‐local interactions. We propose a fractional‐order extension of the Hammerstein architecture that incorporates Grünwald–Letnikov operators to capture complex dynamics through multiple ...
Mourad Elloumi   +2 more
wiley   +1 more source

Parallel solution of eigenproblems in structural dynamics using the implicitly restarted Lanczos method

open access: yesVetor, 2010
This paper presents a parallel implementation of the implicitly restarted Lanczos method for the solution of large and sparse eigenproblems that occur in modal analysis of complex structures using the finite element method.
George O. Ainsworth Jr.   +2 more
doaj   +4 more sources

Positive solutions for eigenvalue problems of fractional q-difference equation with ϕ-Laplacian

open access: yesAdvances in Difference Equations, 2021
The aim of this paper is to investigate the boundary value problem of a fractional q-difference equation with ϕ-Laplacian, where ϕ-Laplacian is a generalized p-Laplacian operator. We obtain the existence and nonexistence of positive solutions in terms of
Jufang Wang   +3 more
doaj   +1 more source

Performance improvement of discrete‐time linear‐quadratic regulators applied to uncertain linear systems using the Tikhonov regularization method

open access: yesAsian Journal of Control, EarlyView.
Abstract The linear‐quadratic regulator (LQR) problem of optimal control of an uncertain discrete‐time linear system (DTLS) is revisited in this paper from the perspective of Tikhonov regularization. We show that an optimally chosen regularization parameter reduces, compared to the classical LQR, the values of a scalar error function, as well as the ...
Fernando Pazos, Amit Bhaya
wiley   +1 more source

The Symmetric Generalized Eigenvalue Problem as a Nash Equilibrium

open access: yes, 2022
Published in ICLR 2023 (JAX code available as part of github.com/deepmind/eigengame)
Ian Gemp, Charlie Chen, Brian McWilliams
openaire   +3 more sources

Controllability and Observability Conditions for Impulsive DAEs on Time Scales

open access: yesAsian Journal of Control, EarlyView.
ABSTRACT This paper establishes criteria for controllability and observability in a class of linear time‐invariant impulsive differential‐algebraic equations (DAEs) defined on a time scale. Controllability is defined as the ability to transfer the system state from any initial condition to any desired state within a finite time interval using an ...
Awais Younus   +3 more
wiley   +1 more source

Block Preconditioning Matrices for the Newton Method to Compute the Dominant λ-Modes Associated with the Neutron Diffusion Equation

open access: yesMathematical and Computational Applications, 2019
In nuclear engineering, the λ -modes associated with the neutron diffusion equation are applied to study the criticality of reactors and to develop modal methods for the transient analysis. The differential eigenvalue problem that needs to be
Amanda Carreño   +5 more
doaj   +1 more source

Fast and Accurate Computation of Vertical Modes

open access: yesJournal of Advances in Modeling Earth Systems, 2020
The vertical modes of linearized equations of motion are widely used by the oceanographic community in numerous theoretical and observational contexts.
Jeffrey J. Early   +2 more
doaj   +1 more source

Hyman's Method Applied to the General Eigenvalue Problem [PDF]

open access: yesMathematics of Computation, 1965
This note is concerned with the problem of finding the roots of the determinanta equation I A + XB I = 0. If B is nonsingular, then the problem is equivalent to finding the roots of the equation I B 'A + XI I 0. The latter problem can be solved by reduction of B'1A to Hessenberg form followed by application of Hyman's method coupled with the Laguerre ...
openaire   +1 more source

Critical Success Factors for Enhancing the Circular Economy Performance of Last‐Mile Cold Chain Logistics Packaging for Urban Agricultural Products

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT With the increasing demand for high‐quality agricultural products, the agricultural cold‐chain logistics packaging (ACLP) industry faces significant environmental pressure and circular economy issues. This study analyzes the critical success factors (CSFs) that would enhance ACLP circular economy performance (CEP). The adversarial interpretive
Miao Su   +3 more
wiley   +1 more source

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