Application of unascertained expectation in analysis of coal seam wall rock stability;

On the basis of Document , We give out the definition of unascertained expectation in this paper, and for further study of its proper ties, we give out an example of its application in this paper, too.

Through correcting gross error by unascertained expectation,it maintained all the information of data.

By the present method, not only can the unascertained expected value of the water environment capacity of river water bodies be calculated, but also its subjective reliability can be obtained on the basis of the rules of four fundamental operations of unascertained rational numbers.

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.

The unascertained mathematics analysis method of the measurable results about the dissolved oxygen of water;

The unascertained mathematics was introduced to analyze the representative values of compressive strength of concrete core from cast in-suit pile at the condition of small sampling data.