This article introduces the development of screening theory and analyzes and reviews the current research on it abroad.

By utilizing three theories of education economics in the western countries:the human capital theory,the screening theory,the labor market division theory,based on the problems arising in the graduate student education,the paper analyses the necessity to reform the graduate student education,and attemptsto propose the direction of the reformation.

Based on screening theory in combination wit.

In order to study the distribution of dynamic characteristic parameters along the length of a flip flow screen and the screening theory of high vibration intensity, a non linear dynamic equation was established.

However, the existing screening theory is only true of the close-hole screen, on the other hand, which has been worked out for cantilever screen still remains undefined or un-systema.

The interpretation of China s educational high consumption with the screening hypothesis leads to the countermeasures to solve the problem of China s educational high consumption — to enhance education quality,to establish rational educational consumption philosophy,to change employers people-employing idea and job hunters ieda about ideal jobs,a.

Based on the actual sitaution of the high strain power stake testing in our country at present, this paper analyzes the possible error and its reason by the theory method, field data collection and indoor data handling.

According to the request of relevant forest reserves assets assessment technical specification,combining the resources of the bamboo grove and manage the characteristic,expound and assess non-ripe forest and ripe forest separately from theory method to application of embodiment,prove the feasibility of the method.