The paper studied that HACCP projects was established,critical control point was controlled,hazard analyzed was evaluated in oxidation starch procedure in production,filtration,bath and dehydration,sirocco desicalion,metal detect were confirmed as critical control points,critical limits,monitor procedures,corrective actions were established,as was that the safety and quality were improved.

But in the implementation of HACCP, operators only monitor whether the output data of the critical control points go beyond the critical limits, ignoring whether the process is stable and whether the process variance can be effectively controlled.

Six critical control points and their critical limits were determined and the corresponding precaution measures were made to reduce the potential hazards to safety degree.

We can then establish the critical limits at the critical control points in order to conduct focal monitoring, recording, modification and verification, to further guarantee the safety of snack noodles production.

We can then establish the critical limits at the critical control points to conduct focal monitoring, record, modification and verification, as to further guarantee the safety of frozen vegetable's production.

The paper introduces a new test for bubbles based on the statistical theory of duration dependence, and it is applied to weekly stock index returns of china.

The paper introduces a new test of bubbles,based on the statistical theory of duration dependence, and it is applied to weekly stock index returns of China.

It describes the relevance score distribution of the relevant and non-relevant document respectively using the Gaussian density function and the exponential density function.

The results shows that the correlation value method can be used in diagnosing the nutrient demand and importance order in the different ages of this two species.