Results 21 to 30 of about 25,187,934 (365)

Model Reference Gaussian Process Regression: Data-Driven State Feedback Controller

open access: yesIEEE Access, 2023
This paper proposes a data-driven state feedback controller that enables reference tracking for nonlinear discrete-time systems. The controller is designed based on the identified inverse model of the system and a given reference model, assuming that the
Hyuntae Kim, Hamin Chang
doaj   +1 more source

A Granular System of Ellipses under Linear Shear

open access: yesEPJ Web of Conferences, 2017
Shear of granular systems of disks (in 2D) and spheres (3D) has been studied extensively. However, less is known about systems of non-spherical particles, i.e., ellipses and polygons, etc.
Wang Dong, Zheng Hu, Behringer Robert P.
doaj   +1 more source

On the exact solutions to some system of complex nonlinear models

open access: yesApplied Mathematics and Nonlinear Sciences, 2020
In this manuscript, the application of the extended sinh-Gordon equation expansion method to the Davey-Stewartson equation and the (2+1)-dimensional nonlinear complex coupled Maccari system is presented.
T. Sulaiman, H. Bulut, H. Baskonus
semanticscholar   +1 more source

Multiple stability and instability of Cohen–Grossberg neural network with unbounded time-varying delays

open access: yesJournal of Inequalities and Applications, 2019
In this paper, multiple stability and instability of Cohen–Grossberg neural network with unbounded time-varying delays are studied. Based on the geometrical configuration of activation functions and some rigorous mathematical analysis, some algebraic ...
Yanheng Chen, Songfang Jia
doaj   +1 more source

Fixed-Point Control of Airships Based on a Characteristic Model: A Data-Driven Approach

open access: yesMathematics, 2023
Factors such as changes in the external atmospheric environment, volatility in the external radiation, convective heat transfer, and radiation between the internal surfaces of the airship skin will cause a series of changes in the motion model of an ...
Yanlin Chen   +3 more
doaj   +1 more source

Effects of a nonlinear bath at low temperatures [PDF]

open access: yes, 2004
We use the numerical flow-equation renormalization method to study a nonlinear bath at low temperatures. The model of our nonlinear bath consists of a single two-level system coupled to a linear oscillator bath.
Bruder, C., Gassmann, Hanno
core   +1 more source

A posteriori error estimates of spectral method for nonlinear parabolic optimal control problem

open access: yesJournal of Inequalities and Applications, 2018
In this paper, we investigate the spectral approximation of optimal control problem governed by nonlinear parabolic equations. A spectral approximation scheme for the nonlinear parabolic optimal control problem is presented. We construct a fully discrete
Lin Li   +4 more
doaj   +1 more source

GPU Based Modelling and Analysis for Parallel Fractional Order Derivative Model of the Spiral-Plate Heat Exchanger

open access: yesAxioms, 2021
Heat exchangers are commonly used in various industries. A spiral-plate heat exchanger with two fluids is a compact plant that only requires a small space and is excellent in high heat transfer efficiency.
Guanqiang Dong, Mingcong Deng
doaj   +1 more source

Lump Solutions and Resonance Stripe Solitons to the (2+1)-Dimensional Sawada-Kotera Equation

open access: yesAdvances in Mathematical Physics, 2017
Based on the symbolic computation, a class of lump solutions to the (2+1)-dimensional Sawada-Kotera (2DSK) equation is obtained through making use of its Hirota bilinear form and one positive quadratic function.
Xian Li, Yao Wang, Meidan Chen, Biao Li
doaj   +1 more source

Direct Collocation with Reproducing Kernel Approximation for Two-Phase Coupling System in a Porous Enclosure

open access: yesMathematics, 2021
The direct strong-form collocation method with reproducing kernel approximation is introduced to efficiently and effectively solve the natural convection problem within a parallelogrammic enclosure.
Judy P. Yang, Yi-Shan Liao
doaj   +1 more source

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