During the 1970’s and 1980’s studies on the rela-tion between LAI and yield had been carried out inGAAS.The main results were as follows:(1)Usingthe accumulated LAI value at three stages,i.e.panicle initiation(PI),h...During the 1970’s and 1980’s studies on the rela-tion between LAI and yield had been carried out inGAAS.The main results were as follows:(1)Usingthe accumulated LAI value at three stages,i.e.panicle initiation(PI),heading(H)and 20 d afterheading(H),to analyze the relation between LAIand yield was more accurrate than only using theLAI value at H stage(see table);(2)Reaching cer-展开更多
By the end of 1990,Daqing,Oilfields had been produ-cing for 30 years with water flooding.The composite water cut was as high as 79%.In the general regularity of developing large scale sandstone reservoirs,the oilfield...By the end of 1990,Daqing,Oilfields had been produ-cing for 30 years with water flooding.The composite water cut was as high as 79%.In the general regularity of developing large scale sandstone reservoirs,the oilfields had been in their later stage of production,char-acterized by rapid decline of oil.output.It is very difficult to keep a steady oil production without any breakthrough in oilfield development techno-logies.展开更多
The article introduces three of the paradigms used to analyze intemet regulation and applies them to the history of internet content control in Europe. It builds on Thomas Kuhn＇s notion of paradigms and previous work...The article introduces three of the paradigms used to analyze intemet regulation and applies them to the history of internet content control in Europe. It builds on Thomas Kuhn＇s notion of paradigms and previous works on regulatory theory, defining regulatory paradigms as a ＂shared understanding of the purpose of regulation, of the way of thinking about how regulation works, and of the set of institutional arrangements and instruments through which regulation is conducted.＂ Building on this definition, the prevalent concepts of the paradigms of intemet regulation refer to the intention, mechanisms, and the intensity of regulation. The article discusses these concepts with regard to the regulation of interact content control in Europe and analyzes three paradigm shifts that have taken place since the early days of the intemet. These paradigm shifts concern the responsiveness, differentiation, and intensity of regulation.展开更多
文摘During the 1970’s and 1980’s studies on the rela-tion between LAI and yield had been carried out inGAAS.The main results were as follows:(1)Usingthe accumulated LAI value at three stages,i.e.panicle initiation(PI),heading(H)and 20 d afterheading(H),to analyze the relation between LAIand yield was more accurrate than only using theLAI value at H stage(see table);(2)Reaching cer-
文摘By the end of 1990,Daqing,Oilfields had been produ-cing for 30 years with water flooding.The composite water cut was as high as 79%.In the general regularity of developing large scale sandstone reservoirs,the oilfields had been in their later stage of production,char-acterized by rapid decline of oil.output.It is very difficult to keep a steady oil production without any breakthrough in oilfield development techno-logies.
文摘The article introduces three of the paradigms used to analyze intemet regulation and applies them to the history of internet content control in Europe. It builds on Thomas Kuhn＇s notion of paradigms and previous works on regulatory theory, defining regulatory paradigms as a ＂shared understanding of the purpose of regulation, of the way of thinking about how regulation works, and of the set of institutional arrangements and instruments through which regulation is conducted.＂ Building on this definition, the prevalent concepts of the paradigms of intemet regulation refer to the intention, mechanisms, and the intensity of regulation. The article discusses these concepts with regard to the regulation of interact content control in Europe and analyzes three paradigm shifts that have taken place since the early days of the intemet. These paradigm shifts concern the responsiveness, differentiation, and intensity of regulation.
