Results 21 to 30 of about 19,539 (276)

Moving and oblique observations of beams and plates [PDF]

open access: yes, 2019
We study the observability of the one-dimensional Schr{\"o}dinger equation and of the beam and plate equations by moving or oblique observations. Applying different versions and adaptations of Ingham's theorem on nonharmonic Fourier series, we obtain ...
Jaming, Philippe, Komornik, Vilmos
core   +2 more sources

Ingham type approach for uniform observability inequality of the semi-discrete coupled wave equations

open access: yesElectronic Journal of Differential Equations, 2020
This article concerns an observability inequality for a system of coupled wave equations for the continuous models as well as for the space semi-discrete finite difference approximations.
Dilberto da Silva Almeida Junior   +3 more
doaj  

Null Controllability of a Nonlinear Age Structured Model for a Two-Sex Population

open access: yesAbstract and Applied Analysis, 2021
This paper is devoted to study the null controllability properties of a nonlinear age and two-sex population dynamics structured model without spatial structure. Here, the nonlinearity and the couplage are at the birth level.
Amidou Traoré   +3 more
doaj   +1 more source

Nearly Linear-Phase 2-D Recursive Digital Filters Design Using Balanced Realization Model Reduction

open access: yesSignals, 2023
This paper presents a new method for the design of separable-denominator 2-D IIR filters with nearly linear phase in the passband. The design method is based on a balanced realization model reduction technique.
Abdussalam Omar   +2 more
doaj   +1 more source

Weak observability estimates for 1-D wave equations with rough coefficients [PDF]

open access: yes, 2013
In this paper we prove observability estimates for 1-dimensional wave equations with non-Lipschitz coefficients. For coefficients in the Zygmund class we prove a "classical" observability estimate, which extends the well-known observability results in ...
Fanelli, Francesco, Zuazua, Enrique
core   +4 more sources

Observational-interventional Bell inequalities

open access: yesPhysical Review A
Generalizations of Bell's theorem, particularly within quantum networks, are now being analyzed through the causal inference lens. However, the exploration of interventions, a central concept in causality theory, remains significantly unexplored.
Davide Poderini   +5 more
openaire   +2 more sources

H2 model order reduction of bilinear systems via linear matrix inequality approach

open access: yesIET Control Theory & Applications, 2023
This paper proposes an H2‐optimal model order reduction (MOR) method for bilinear systems based on the linear matrix inequality (LMI) approach. In this method, to reduce the computational complexity, at first, a reduced middle‐order approximation of the ...
Hasan Nasiri Soloklo, Nooshin Bigdeli
doaj   +1 more source

Li-Ion Battery Anode State of Charge Estimation and Degradation Monitoring Using Battery Casing via Unknown Input Observer

open access: yesEnergies, 2022
The anode state of charge (SOC) and degradation information pertaining to lithium-ion batteries (LIBs) is crucial for understanding battery degradation over time. This information about each cell in a battery pack can help prolong the battery pack’s life
Ashikur Rahman   +2 more
doaj   +1 more source

Exact Null Controllability of KdV-Burgers Equation with Memory Effect Systems

open access: yesAbstract and Applied Analysis, 2012
This paper is concerned with exact null controllability analysis of nonlinear KdV-Burgers equation with memory. The proposed approach relies upon regression tool to prove controllability property of linearized KdV-Burgers equation via Carleman estimates.
Rajagounder Ravi Kumar   +2 more
doaj   +1 more source

A null controllability problem with a finite number of constraints on the normal derivative for the semilinear heat equation

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2012
We consider the semilinear heat equation in a bounded domain of $\mathbb{R}^m$. We prove the null controllability of the system with a finite number of constraints on the normal derivative, when the control acts on a bounded subset of the domain.
Carole Louis-Rose
doaj   +1 more source

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