Results 81 to 90 of about 834,576 (285)

The Legendre Spectral Method for Solving the Nonlinear Time-Fractional Convection-Diffusion Equations

Mathematics
In this paper, the nonlinear time-fractional convection-diffusion equations are solved by the Legendre spectral method. The Caputo time-fractional derivative is discretized by the L2–1σ scheme. A priori estimates of the fully discrete scheme are derived,
Guangfeng Lu, Lihua Jiang, Wenping Chen, Qingping Cheng, Xinyue Wang   +4 more
doaj   +1 more source

The global financial crisis and its implications on the convergence of Romania with the economic and monetary union [PDF]

The international financial crisis has affected the new member States of the European Union as well, for which the convergence criteria represent the economic test of evaluation of a degree of economic preparation, in order to participate in the third ...
Marioara AVRAM, Veronel AVRAM
core  

Stability and convergence in strongly monotone dynamical systems.

Journal für die reine und angewandte Mathematik (Crelles Journal), 1988
Some dynamical systems enjoy a strong comparison principle; these include quasilinear second-order parabolic equations and cooperative vector fields. Under fairly general conditions it is shown that such systems are nonchaotic: most orbits with compact closure are asymptotic to the set of stationary points, and most orbits are Lyapunov stable ...
openaire   +3 more sources

An Adaptive Human Pilot Model With Reaction Time Delay for Enhanced Adaptive Control in Piloted Systems

International Journal of Adaptive Control and Signal Processing, EarlyView.
This work introduces an adaptive human pilot model that captures pilot time‐delay effects in adaptive control systems. The model enables the prediction of pilot–controller interactions, facilitating safer integration and improved design of adaptive controllers for piloted applications.
Abdullah Habboush, Yildiray Yildiz
wiley   +1 more source

A Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller

International Journal of Adaptive Control and Signal Processing, EarlyView.
Block Diagram of the Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller. ABSTRACT This article introduces a discrete‐time robust adaptive one‐sample‐ahead preview super‐twisting sliding mode controller. A stability analysis of the controller by Lyapunov criteria is developed to demonstrate its robustness in handling both ...
Guilherme Vieira Hollweg, Paulo Jefferson Dias de Oliveira Evald, Shivam Chaturvedi, Hilton Abilio Gründling, Rodrigo Varella Tambara, Wencong Su   +5 more
wiley   +1 more source

Convergence and Stability in Collocation Methods of Equation u′(t)=au(t)+bu([t])

Journal of Applied Mathematics, 2012
This paper is concerned with the convergence, global superconvergence, local superconvergence, and stability of collocation methods for u′(t)=au(t)+bu([t]).
Han Yan, Shufang Ma, Yanbin Liu, Hongquan Sun   +3 more
doaj   +1 more source

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

Advanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi, Pasquale Guglielmi, Gianfranco Palumbo, Giuseppe Carbone   +3 more
wiley   +1 more source

Effective Mass and Energy Recovery by Conserved Compact Finite Difference Schemes

IEEE Access, 2018
This paper is concerned with mass and energy recovery by some conserved compact finite difference schemes for the nonlinear Schrödinger-Poisson equations.
Xiujun Cheng, Xiaoli Chen, Dongfang Li
doaj   +1 more source

GENERIC STABILITY AND MODES OF CONVERGENCE

The Journal of Symbolic Logic
Abstract We expand the study of generic stability in three different directions. Generic stability is best understood as a property of types in $NIP$ theories in classical logic. In this article, we make attempts to generalize our understanding to Keisler measures instead of types, arbitrary theories instead of
openaire   +2 more sources

Packaging of Macroscopic Material Payloads: Needs, Challenges, Concepts, and Future Directions

Advanced Engineering Materials, EarlyView.
This review introduces a unified framework that decomposes any macroscopic packaging system into the payload, packaging material, and packaging strategy and combines them into a conceptual packaging equation: packaging strategy = payload + packaging material.
Venkata S. R. Jampani, Manos Anyfantakis
wiley   +1 more source