Development of tools for targeted modifications of specific DNA sequences in plants is of great importance to basic plant biology research as well as crop improvement.The ability to cut DNA at specific locations in th...Development of tools for targeted modifications of specific DNA sequences in plants is of great importance to basic plant biology research as well as crop improvement.The ability to cut DNA at specific locations in the genome to generate doublestrand breaks（DSBs）in vivo is a prerequisite for any genome editing efforts.展开更多
Under a heterogeneous firm analysis framework,this paper creates a theoretical model to investigate how trade liberalization of intermediates influences the technology choice of firms based on the data of Chinese manu...Under a heterogeneous firm analysis framework,this paper creates a theoretical model to investigate how trade liberalization of intermediates influences the technology choice of firms based on the data of Chinese manufacturers during 2000-2006.According to our empirical result,after China's WTO entry,trade liberalization of intermediates significantly induced Chinese exporters to apply advanced technologies.In our further consideration of the differentiated productivity of firms,we found that such an effect is related to the initial productivity of firms and only significantly induces mediumproductivity firms to upgrade their technologies.In addition,the technology-promotion effect of trade liberalization of intermediates is the most significant for technology-intensive exporters and the least significant for labor-intensive exporters.展开更多
基金supported by a National Transgenic Science and Technology Program (2016ZX08010002)to R.W.a startup fund from the Huazhong Agricultural University
文摘Development of tools for targeted modifications of specific DNA sequences in plants is of great importance to basic plant biology research as well as crop improvement.The ability to cut DNA at specific locations in the genome to generate doublestrand breaks（DSBs）in vivo is a prerequisite for any genome editing efforts.
文摘Under a heterogeneous firm analysis framework,this paper creates a theoretical model to investigate how trade liberalization of intermediates influences the technology choice of firms based on the data of Chinese manufacturers during 2000-2006.According to our empirical result,after China's WTO entry,trade liberalization of intermediates significantly induced Chinese exporters to apply advanced technologies.In our further consideration of the differentiated productivity of firms,we found that such an effect is related to the initial productivity of firms and only significantly induces mediumproductivity firms to upgrade their technologies.In addition,the technology-promotion effect of trade liberalization of intermediates is the most significant for technology-intensive exporters and the least significant for labor-intensive exporters.
