该文采用政策及项目实施效应评价模型("倍差法"(Difference-in-Difference))作为分析模型.对政策实施的目标实现程度以及对政策目标群体的影响分析与评价.
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...固定资产 就业 双重差分 [gap=20434]Key words: value-added tax, firm, fixed asset, employment, difference-in-differences ...
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Clearly sleep made a difference, but that difference didn't relate to how much time one spent in each of the various sleep stages.
很显然,睡眠会带来差异,但是这种差异与人们花在每一睡眠阶段的时间长短没有关系。
It's typical to think that there's a big difference between a great idea and a terrible one, but actually the difference is only in how an idea is approached.
认为好的主意和不好的注意之间有巨大的差别是典型的思维,但实际上区别只在于这个想法是如何被实现的。
The difference between capturing attention in the first place and sustaining it is nothing short of the difference between making a promise and keeping it.
首次获取专注与保持专注的区别和做出承诺与遵守承诺没什么两样。
She says people would not even notice a difference in taste with three grams, or one-half teaspoon, less salt per day.
VOA: special.2010.01.27
It's really the difference between perseverance in my case, and genius-- pure, unadulterated genius-- in the case of Chopin.
这真是差距,勤奋的普通人,比如我,和天才,浑然天成的天才,比如肖邦,之间的差距
You see the difference in electronegativity, square it, multiply it by one-quarter and raise that to the power e.
你看到了电负性的差异,开方,乘以四分之一,在移到e上去做指数。
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