The study of complementarity between rough set theory and unascertained system theory;

This paper describes the theoretical values and practical effects of the unaseertained system of the basis of demonstrating the existence of the unascertained system.

To resolve the PID control problem of unknown systems,intelligent PID controller of zero-pole placement was designed according to PID control system theory and zero-pole placement theory.

A general approach for fault information detection in unknown systems using FBFN is present.

The real-time estimation for the unknown system is completed with the minimum mean-square error.

Calculation of water environmental capacity in lake and reservoir based on unascertained number theory;

Qualitative estimation method of equipment life cycle cost based on unascertained number theory;

In this paper, the correspondence K from the real number set R to the subset R of the unascertained number set R has been given here.

Like other environmental systems, lake and reservoir are also complicated systems with uncertainty.

The specified probabilistic models for structural resistances were put forward in connecting with the differences between both structures in deign and in service, which introduce the uncertainty variables into probabilistic models for the in-service structural resistance to reflect the uncertainty of cognit.