In this paper, we design and investigate a higher order ? -uniformly convergent method to solve singularly perturbed parabolic reaction-diffusion problems with large time delay. We use the Crank–Nicolson for derivative, while spatial derivative is discretized using nonstandard finite difference approach on uniform mesh. ...

In order to reveal the inducing factors and safety dynamic evolution mechanism of frequent personal injury accidents under a low carbon manufacturing process, nonlinear model distributed system with large time delay is established. The established then verified by simulation results from mathematical analysis evolution. Moreover, qualitative on trend human–machine process investigated. Finally,...