subunderwriting,distribution

This linear goal programming model is an effective method to make product distribution decisions.

对模型解的分析为决策者提供了改变目标优先级情况下的可供选择的最优方案 ,因此 ,线性目标规划法是解决(产品)分销决策的一种有效方法。

Based on analysis of the studies on runoff and sediment yield and hydrological effect in forest watersheds, major advances and problems are assessed and main trends of research in this field pointed out.

在大量分析国内外对森林流域产流产沙及其水文效应研究的基础上 ,客观地评价了该领域研究的重要进展和存在的问题 ,指出该领域研究的发展趋

Based on the information of 33 times rainfall,runoff and sediment yield at No 3runoff plot in Zizhou Tuanshangou watershed,the variation of rainfall and runoff-sediment yieldon slope surface under diffrent rain pattern are analyzed by using statistic method.

该文根据子洲团山沟３号径流场（坡度２２°，面积６０ｍ×１５ｍ＝３００ｍ~２）３３次降雨产流产沙的过程变化情况，统计分析了不同类型降雨坡面产流过程中的降雨变化及产流产沙过程变化。

Modeling refinery operation scheduling with inventory management;

集成库存管理的炼油厂生产排产建模