This research assessed the health conditions of the Beijing urban ecosystem from 1996 to 2003 through use of a fuzzy logic approach on entropy weight.
采用基于熵权的模糊数学评价方法，借助于相对隶属度的概念评价了北京城市生态系统在某一特定时间内（1996~2003年）的相对健康状态。
As an approach to describe and control the system, the fuzzy logic theory has been the common concerns of people.
作为一种表述方法和控制手段，模糊逻辑理论得到了大家的共同关注。
Finally, an approach of chattering reduction based on fuzzy logic is presented.
最后，提出了一种新型的基于模糊控制的减抖方法。
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