Results 31 to 40 of about 230,985 (278)

Weak convergence of Galerkin approximations for fractional elliptic stochastic PDEs with spatial white noise [PDF]

open access: yes, 2018
The numerical approximation of the solution to a stochastic partial differential equation with additive spatial white noise on a bounded domain is considered.
Bolin, David   +2 more
core   +2 more sources

Adjustable Multiphase Sinusoidal Oscillator with Fractional–Order Elements [PDF]

open access: yes2019 11th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT), 2019
This paper presents a fractional–order multiphase oscillator with adjustable FO (Frequency of Oscillation). The oscillator utilizes the following components: CCTA (Current Conveyor Transconductance Amplifier), OTA (Operational Transconductance Amplifier), auxiliary OTRA (Operational Transresistance Amplifier), two FOC (Fractional–Order Capacitors) and ...
Jan Dvorak   +4 more
openaire   +2 more sources

Extended Darlington Synthesis of Fractional Order Immittance Function With Two Element Orders

open access: yesIEEE Access, 2019
Actual circuits have fractional order characteristics essentially. With the widespread application of fractional order circuits and the great strides in the manufacturing of fractional order elements in recent years, passive synthesis of fractional order
Guishu Liang, Zheng Qi
doaj   +1 more source

Vibration Equation of Fractional Order Describing Viscoelasticity and Viscous Inertia

open access: yesOpen Physics, 2019
The steady state response of a fractional order vibration system subject to harmonic excitation was studied by using the fractional derivative operator −∞Dtβ,${}_{-\infty} D_t^\beta,$where the order β is a real number satisfying 0 ≤ β ≤ 2.
Duan Jun-Sheng, Xu Yun-Yun
doaj   +1 more source

Fracmemristor: Fractional-Order Memristor

open access: yesIEEE Access, 2016
This paper mainly discusses an interesting conceptual framework: the fractional-order memristor (fracmemristor). It is a challenging theoretical problem to determine what the fracmemristor interpolating characteristics between the memristor and the ...
Yi-Fei Pu, Xiao Yuan
doaj   +1 more source

Fracmemristor chaotic oscillator with multistable and antimonotonicity properties

open access: yesJournal of Advanced Research, 2020
Memristor is a non-linear circuit element in which voltage-current relationship is determined by the previous values of the voltage and current, generally the history of the circuit.
Haikong Lu   +5 more
doaj   +1 more source

An expanded mixed finite element simulation for two-sided time-dependent fractional diffusion problem

open access: yesAdvances in Difference Equations, 2018
In this paper, we consider a time-dependent diffusion problem with two-sided Riemann-Liouville fractional derivatives. By introducing a fractional-order flux as auxiliary variable, we establish the saddle-point variational formulation, based on which we ...
Qiong Yuan, Huanzhen Chen
doaj   +1 more source

Basic Properties and Stability of Fractional-Order Reset Control Systems

open access: yes, 2013
Reset control is introduced to overcome limitations of linear control. A reset controller includes a linear controller which resets some of states to zero when their input is zero or certain non-zero values.
HosseinNia, S. Hassan   +2 more
core   +1 more source

Error Estimates for Approximations of Distributed Order Time Fractional Diffusion with Nonsmooth Data [PDF]

open access: yes, 2015
In this work, we consider the numerical solution of an initial boundary value problem for the distributed order time fractional diffusion equation. The model arises in the mathematical modeling of ultra-slow diffusion processes observed in some physical ...
Jin, Bangti   +3 more
core   +2 more sources

Electromagnetic Interpretation of Fractional-Order Elements

open access: yesJournal of Modern Physics, 2017
Fractional circuits have attracted extensive attention of scholars and researchers for their superior performance and potential applications. Recently, the fundamentals of the conventional circuit theory were extended to include the new generalized elements and fractional-order elements.
Guishu Liang, Jiawei Hao, Dongqing Shan
openaire   +2 more sources

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