Firstly, the features of UAV task assignment are analyzed in depth, and then the extended mixed integer linear programming (MILP) model for task assignment is established.
本文首先深入分析多无人机任务分配问题的特点，建立了扩展的混合整数线性规划(MILP)任务分配模型。
METHODS: the model of extended linear expenditure system (ELES) was used to analyze the data from the third health service investigation in the city of Ningbo.
方法：数据来源于宁波市第三次卫生服务调查资料，采用扩展线性支出系统模型。
In this paper, the covariance matrix of random effect in linear mixed model is extended to positive matrix. We construct the estimation of variance components based on the idea of ANOVA estimation.
将线性混合模型中随机效应的协方差阵推广为正定阵，运用方差分析估计的方法给出了方差分量的估计。
ELES (Extended Linear Expenditure System) is a good demand model which has explicit economic meaning and is used extensively.
扩展的线性支出系统需求函数模型是一类经济意义清楚，具有广泛应用价值的需求函数模型。
We obtain the stability condition by applying the linear stability theory to the extended model.
应用线性稳定性理论得到稳定条件。
We obtain the stability condition by applying the linear stability theory to the extended model.
应用线性稳定性理论得到稳定条件。
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