Results 31 to 40 of about 803,646 (330)

Investigation of a Nonlinear Coupled (k, ψ)–Hilfer Fractional Differential System with Coupled (k, ψ)–Riemann–Liouville Fractional Integral Boundary Conditions

open access: yesFoundations, 2022
This paper is concerned with the existence of solutions for a new boundary value problem of nonlinear coupled (k,ψ)–Hilfer fractional differential equations subject to coupled (k,ψ)–Riemann–Liouville fractional integral boundary conditions.
Ayub Samadi   +3 more
doaj   +1 more source

Existence and Uniqueness Results for Hadamard-Type Fractional Differential Equations with Nonlocal Fractional Integral Boundary Conditions

open access: yesAbstract and Applied Analysis, 2014
We study the existence and uniqueness of solutions for a fractional boundary value problem involving Hadamard-type fractional differential equations and nonlocal fractional integral boundary conditions. Our results are based on some classical fixed point
Phollakrit Thiramanus   +2 more
doaj   +1 more source

Nonlocal coupled hybrid fractional system of mixed fractional derivatives via an extension of Darbo's theorem

open access: yesAIMS Mathematics, 2021
In this work a new existence result is established for a coupled fractional system consisting of one Caputo and one Riemann-Liouville fractional derivatives and nonlocal hybrid boundary conditions.
Ayub Samadi   +2 more
doaj   +1 more source

Output Feedback Control for Asymptotic Stabilization of Spacecraft with Input Saturation

open access: yesJournal of Control Science and Engineering, 2017
This paper investigates the attitude stabilization problem of rigid spacecraft subject to actuator constraints, external disturbances, and attitude measurements only.
Chutiphon Pukdeboon
doaj   +1 more source

Quantum Hermite-Hadamard and quantum Ostrowski type inequalities for s-convex functions in the second sense with applications

open access: yesAIMS Mathematics, 2021
In this study, we use quantum calculus to prove Hermite-Hadamard and Ostrowski type inequalities for s-convex functions in the second sense. The newly proven results are also shown to be an extension of comparable results in the existing literature ...
Suphawat Asawasamrit   +4 more
doaj   +1 more source

Double symbolic joint entropy in nonlinear dynamic complexity analysis

open access: yes, 2017
Symbolizations, the base of symbolic dynamic analysis, are classified as global static and local dynamic approaches which are combined by joint entropy in our works for nonlinear dynamic complexity analysis.
Wang, Jun, Yao, Wenpo
core   +2 more sources

Inverse Optimal Attitude Stabilization of Flexible Spacecraft with Actuator Saturation

open access: yesInternational Journal of Aerospace Engineering, 2016
This paper presents a new robust inverse optimal control strategy for flexible spacecraft attitude maneuvers in the presence of external disturbances and actuator constraint. A new constrained attitude controller for flexible spacecraft is designed based
Chutiphon Pukdeboon
doaj   +1 more source

Some generalized Riemann-Liouville k-fractional integral inequalities

open access: yesJournal of Inequalities and Applications, 2016
The focus of the present study is to prove some new Pólya-Szegö type integral inequalities involving the generalized Riemann-Liouville k-fractional integral operator.
Praveen Agarwal   +2 more
doaj   +1 more source

On a Coupled Differential System Involving (k,ψ)-Hilfer Derivative and (k,ψ)-Riemann–Liouville Integral Operators

open access: yesAxioms, 2023
We investigate a nonlinear, nonlocal, and fully coupled boundary value problem containing mixed (k,ψ^)-Hilfer fractional derivative and (k,ψ^)-Riemann–Liouville fractional integral operators.
Ayub Samadi   +3 more
doaj   +1 more source

Estimation of Power System Inertia Using Nonlinear Koopman Modes

open access: yes, 2018
We report a new approach to estimating power system inertia directly from time-series data on power system dynamics. The approach is based on the so-called Koopman Mode Decomposition (KMD) of such dynamic data, which is a nonlinear generalization of ...
Hamasaki, Ryo   +2 more
core   +1 more source

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