Derived the practically predicting formula of the chip breakage on the two extreme situations,the chip broken in the plane composed of the pin axis and the direction of chip movement,and the chip broken when it went off the tool round the breaker.

A note on forecasting formula for wind wave and fetch width;

The explicit representation of solution of recursive prediction formula to AR modelis presented in this paper.

Three kinds of main weather systems of air quality are outlined on the basis of meteorological materials of ground;the prediction mode of the concentration of pollutants in different seasons has been set up.

Analysis on chaos phase space prediction model in deformed system

Basing on the three dimentional model and starting from advection diffusion equation, a prediction model for concentration field is set up.

It is confirmed that SVM method is not need to classify weather types and the effect of forecast model being established is better on many samples.

The four-dimensional data assimilation is to integrate the current and past data into a forecast model equation for providing time continuity and dynamic coupling.