Compared with the traditional subjective judgments of administrative staff and single evaluation index model, DEA model has offered a more effective method in appraising advertisement effect.

同传统的管理人员主观判断和单一评价指标相比，DEA模型提供了一种更为有效的广告效果评价方法。

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Nowadays foreign language teachers face many unsolved problems such as the single teaching method, dull teaching environment, lack of staff, out of date teaching materials.

目前我国外语教学存在着教学方法单一、教学环境单一、教师严重缺编、教学内容相对滞后等问题。

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