u U, u (pl. U's, u's ) 1.英文字母表第二十一字母。 2.U 字形的東西。 3.〔U〕 鈾的符號(= uranium)。 U-bolt U 形[馬蹄]螺栓。 U-tube U 字管。 4.〔U〕 〔口語〕上流社會的,上層階級的。 5.〔U〕 〔英國〕(影片等的) U級〔表示老少咸宜,美國的對應分級符號為G〕。
Simon kuznets put forward the famous inverted u hypothesis in his classic paper published in 1955 教育對收入不平等的作用機理和作用效果一直是經濟學研究的一個重點。
However , these indexes merely reflect economic efficiency , disregarding a country ' s overall welfare level . the other is the explanation for inequality only by " inverted u hypothesis " 但是,單純的gdp增長數據或引進利用外資的數額,只考察了經濟的效率方面,卻不能全面地反映一國的福利水平。
Following kuznets , sherman robinson made outstanding contributions to research on inverted u hypothesis , who in 1976 put forward a mathematical model that would allow for more rigorous studies on u hypothesis , according to the transfer of population within two sectors leading to change in income inequality 本文從相對收入不平等角度出發,提出了一個兩部門模型,研究了庫茲涅茨倒u假說成立的條件,分析了倒u假說的性質,并分析了教育擴張對收入不平等動態的影響。