formal argument

The growth period is pided into 6 stages and the multi variate auto regression model is applied to the establishment of the forecasting model.

应用多变量自回归模型ARV (n) ,利用三江平原腹地———富锦市 1985～ 1999年气象资料 ,按水稻生育期划分 6个生育阶段 ,建立了井灌水稻生育期内需水量预测模型。

Deals with the stability analysis of the differential equation with piecewise continuous arguments u′(t)=au(t)+bu().

研究一个具有分片连续型自变量方程u(′t)=au(t)+bu([2t])的稳定性。