sector selection

The portfolios follow a top-down sector allocation approach combined with a structured bottom-up stock selection process.

投资组合遵循一种自上至下的部门分配方法,这种方法与一种条理清晰的、下至上的股票选择过程相结合.

Based on each DMU sector efficiency value, a method that the sector DEA model solves is put forward, and its validity is studied. At the same time this method is applied in the base camouflage plan selection question.

文中基于每个DMU的区间效率值，给出了区间DEA模型求解的一种方法并研究了它的有效性，同时将这种方法应用于基地伪装方案的选取问题。

some thoughts on the strategists' sector selection:

以下是对策略师所选股票的一些思考：

Firstly, research had analyzed the scale sector selection to the influence on the incised meander fractal.

首先分析了标度区间的选取对曲流分形的影响。

The development of the service sector can not be separated from the service business prosperity, in the same time, the prosperity of the enterprise can not be separated from the competition and the scientific selection of entering and exiting behavior.

服务业的发展离不开服务业企业的繁荣，而企业的繁荣离不开竞争，离不开其科学选择进入与退出行为。