Nowadays the rising of opportunity cost of farm labor comes to the forefront of attention in China. In order to understand its impact on agricultural land-use structure, a theoretical framework of household economics ...Nowadays the rising of opportunity cost of farm labor comes to the forefront of attention in China. In order to understand its impact on agricultural land-use structure, a theoretical framework of household economics is formulated drawn on Low's model. Under the theoretical framework, the impact of the rising opportunity cost of on-farm on cropping structure is deduced in theory. And then, using statistic and survey data, taking mountain area of southern Ningxia as an example, the theoretical assumes are verified. The results show that the rise of opportunity cost of farm labor leads to less diversified cropping structure.展开更多
In May,dimly lit footage posted by a dubious Russian blog,English Russia,showing a Chinese office equipped with 10,000 phones,confirmed what many in tech mediahave warned about for years:Views and rankings all overthe...In May,dimly lit footage posted by a dubious Russian blog,English Russia,showing a Chinese office equipped with 10,000 phones,confirmed what many in tech mediahave warned about for years:Views and rankings all overthe internet are being manipulated by'click farms.'The high ratings of many apps on Android展开更多
基金support of research grants from the National Key Technology R&D Program(Grant No.2006BAB15B02)the National Natural Science Fund of China(Grant No.40971062 and 404801051)
文摘Nowadays the rising of opportunity cost of farm labor comes to the forefront of attention in China. In order to understand its impact on agricultural land-use structure, a theoretical framework of household economics is formulated drawn on Low's model. Under the theoretical framework, the impact of the rising opportunity cost of on-farm on cropping structure is deduced in theory. And then, using statistic and survey data, taking mountain area of southern Ningxia as an example, the theoretical assumes are verified. The results show that the rise of opportunity cost of farm labor leads to less diversified cropping structure.
文摘In May,dimly lit footage posted by a dubious Russian blog,English Russia,showing a Chinese office equipped with 10,000 phones,confirmed what many in tech mediahave warned about for years:Views and rankings all overthe internet are being manipulated by'click farms.'The high ratings of many apps on Android
