黄河流域绿色发展效率时空演进 |
周福礼, 海盼盼, 王雪妮 |
Green development efficiency measurement and the spatio- temporal evolution of Yellow River Basin based on a multi-period two-stage DEA model |
Fuli Zhou, Panpan Hai, Xueni Wang |
图1 多周期两阶段DEA模型的框架 |
Fig.1 Framework of multi-period two-stage DEA model |
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