The understanding of the concept of activity was strengthened after the revela-tion made on the meaning of reference states of substances in different states.

In this scheme, according to a new idea of “updating", it is required that multi-reference states are renewedly selected on the period of analogue updating in the process of the analogue-dynamical model integration, and optimal fore.

But it is difficult to make certain proper reference state in the uniaxial tensile test,and there has not been an acceptable formula to express its stress-strain relationship.

This paper proposed a mobile agent static routing protocol based on the reference state which can prevent from malicious host.

In the scheme,a new method of double position north-findingcalculation and orientation locked shift measuring is used to increased thenorth-finding accuracy is and one platform has the functions of north-finding, stable sighting and attitude reference simultaneously.

,2) The laser gyro attitude reference system of a fire control system.

In order to detect malicious host s attacks, a method based on reference states is suggested.