T=题名(书名、题名),A=作者(责任者),K=主题词,P=出版物名称,PU=出版社名称,O=机构(作者单位、学位授予单位、专利申请人),L=中图分类号,C=学科分类号,U=全部字段,Y=年(出版发行年、学位年度、标准发布年)
AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
范例一:(K=图书馆学 OR K=情报学) AND A=范并思 AND Y=1982-2016
范例二:P=计算机应用与软件 AND (U=C++ OR U=Basic) NOT K=Visual AND Y=2011-2016
摘要:The work's main purpose was to design and implement a model of agricultural production for the attention of food demand of the coal complex in the center of the department of Cesar, Colombia, by mounting Profitable Productive Units in rural areas of the zone with mining influence. The aforementioned rural communities are at a socioeconomic disadvantage concerning to the local economic development policies. It was taken a rural society with socio-economic conditions at a disadvantage, level 1 in the classification scale of 1 to 5 of Colombia, several associations were organized in each one of the affected municipalities with strong agricultural vocation to train them in profitable production strategies, authors performed technical and technological support for 12 months. In synthesis, there were meaningful differences among gross income per month of people who worked in the projects of the Young Rural Entrepreneurs, a fact confirmed by the P-value 0.00000005 (Prob. 〉 F) and the F-value 29.3, both denote the significance statistic for this case is best gross income per month of persons covered by the program, this implies that for a person of the rural community it is more meaningful economically linked to the SENA's Young Rural Entrepreneurs, in contrast to search for jobs in the informal sector, there is even an average value of 530.000 COP/month (about 265 US/month) higher than the statutory minimum wage for 2009, equivalent to 497.000 COP/month (about 245 US/month).
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