Results 21 to 30 of about 146,900 (239)

Fractional-Order PIλDμ Controller Using Adaptive Neural Fuzzy Model for Course Control of Underactuated Ships

open access: yesApplied Sciences, 2022
For the uncertainty caused by the time-varying modeling parameters with the sailing speed in the course control of underactuated ships, a novel identification method based on an adaptive neural fuzzy model (ANFM) is proposed to approximate the inverse ...
Guangyu Li   +3 more
doaj   +1 more source

Riesz potential on the Heisenberg group and modified Morrey spaces

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2012
In this paper we study the fractional maximal operator Mα, 0 ≤ α < Q and the Riesz potential operator ℑα, 0 < α < Q on the Heisenberg group in the modified Morrey spaces L͂p,λ(ℍn), where Q = 2n + 2 is the homogeneous dimension on ℍn.
Guliyev Vagif S., Mammadov Yagub Y.
doaj   +1 more source

Front Propagation of Exponentially Truncated Fractional-Order Epidemics

open access: yesFractal and Fractional, 2022
The existence of landscape constraints in the home range of living organisms that adopt Lévy-flight movement patterns, prevents them from making arbitrarily large displacements.
Afshin Farhadi, Emmanuel Hanert
doaj   +1 more source

Diurnal microstructural variations in healthy adult brain revealed by diffusion tensor imaging. [PDF]

open access: yesPLoS ONE, 2014
Biorhythm is a fundamental property of human physiology. Changes in the extracellular space induced by cell swelling in response to the neural activity enable the in vivo characterization of cerebral microstructure by measuring the water diffusivity ...
Chunxiang Jiang   +7 more
doaj   +1 more source

Parabolic Fractional Maximal Operator in Modified Parabolic Morrey Spaces

open access: yesJournal of Function Spaces and Applications, 2012
We prove that the parabolic fractional maximal operator MαP, 0 ...
Vagif S. Guliyev, Kamala R. Rahimova
doaj   +1 more source

Time-Space Fractional Model for Complex Cylindrical Ion-Acoustic Waves in Ultrarelativistic Plasmas

open access: yesComplexity, 2020
In this paper, the fractional order models are used to study the propagation of ion-acoustic waves in ultrarelativistic plasmas in nonplanar geometry (cylindrical).
Quansheng Liu, Liguo Chen
doaj   +1 more source

Boundary regularity for elliptic systems under a natural growth condition [PDF]

open access: yes, 2010
We consider weak solutions $u \in u_0 + W^{1,2}_0(\Omega,R^N) \cap L^{\infty}(\Omega,R^N)$ of second order nonlinear elliptic systems of the type $- div a (\cdot, u, Du) = b(\cdot,u,Du)$ in $\Omega$ with an inhomogeneity satisfying a natural growth ...
Beck, Lisa
core   +3 more sources

Some Estimates of Rough Bilinear Fractional Integral

open access: yesJournal of Function Spaces and Applications, 2012
We study the boundedness of rough bilinear fractional integral BΩ,α on Morrey spaces Lp,λ(ℝn) and modified Morrey spaces L~p,λ(ℝn) and obtain some sufficient and necessary conditions on the parameters.
Yun Fan, Guilian Gao
doaj   +1 more source

On Extended Branciari b-Distance Spaces and Applications to Fractional Differential Equations

open access: yesJournal of Function Spaces, 2021
In this work, we define new α−λ-rational contractive conditions and establish fixed-points results based on aforesaid contractive conditions for a mapping in extended Branciari b-distance spaces. We furnish two examples to justify the work.
Reena Jain   +3 more
doaj   +1 more source

Finite element approximation for the fractional eigenvalue problem [PDF]

open access: yes, 2018
The purpose of this work is to study a finite element method for finding solutions to the eigenvalue problem for the fractional Laplacian. We prove that the discrete eigenvalue problem converges to the continuous one and we show the order of such ...
Borthagaray, Juan Pablo   +2 more
core   +2 more sources

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