Climate change has become a global environmental issue concerned by the international community. Study on climate change has increasingly become a frontier for academics and scholars in all fields. From subjective jud...Climate change has become a global environmental issue concerned by the international community. Study on climate change has increasingly become a frontier for academics and scholars in all fields. From subjective judgment to objective measurement,CSSCI journal papers collected from the CNKI database in 1996-2016 were used. With the aid of bibliometric tools,it is a new attempt to explore the development thread of domestic climate change research and recent research hot spot within the framework of the climate change subject. It found that the current problems in the field of climate change research in China are as follows:(i) low research level and unbalanced discipline development,(ii) relatively spatially concentrated research institutions and relatively research direction,and(iii) single research perspective of the field of agricultural climate change and lack of agricultural adaptability studies.展开更多
In this paper,we study the dynamical stability of a family of explicit blowup solutions of the threedimensional(3D)incompressible Navier-Stokes(NS)equations with smooth initial values,which is constructed in Guo et al...In this paper,we study the dynamical stability of a family of explicit blowup solutions of the threedimensional(3D)incompressible Navier-Stokes(NS)equations with smooth initial values,which is constructed in Guo et al.(2008).This family of solutions has finite energy in any bounded domain of R3,but unbounded energy in R3.Based on similarity coordinates,energy estimates and the Nash-Moser-H?rmander iteration scheme,we show that these solutions are asymptotically stable in the backward light-cone of the singularity.Furthermore,the result shows the existence of local energy blowup solutions to the 3D incompressible NS equations with growing data.Finally,the result also shows that in the absence of physical boundaries,the viscous vanishing limit of the solutions does not satisfy the 3D incompressible Euler equations.展开更多
文摘Climate change has become a global environmental issue concerned by the international community. Study on climate change has increasingly become a frontier for academics and scholars in all fields. From subjective judgment to objective measurement,CSSCI journal papers collected from the CNKI database in 1996-2016 were used. With the aid of bibliometric tools,it is a new attempt to explore the development thread of domestic climate change research and recent research hot spot within the framework of the climate change subject. It found that the current problems in the field of climate change research in China are as follows:(i) low research level and unbalanced discipline development,(ii) relatively spatially concentrated research institutions and relatively research direction,and(iii) single research perspective of the field of agricultural climate change and lack of agricultural adaptability studies.
基金supported by National Natural Science Foundation of China(Grant Nos.12231016 and 12071391)Guangdong Basic and Applied Basic Research Foundation(Grant No.2022A1515010860)。
文摘In this paper,we study the dynamical stability of a family of explicit blowup solutions of the threedimensional(3D)incompressible Navier-Stokes(NS)equations with smooth initial values,which is constructed in Guo et al.(2008).This family of solutions has finite energy in any bounded domain of R3,but unbounded energy in R3.Based on similarity coordinates,energy estimates and the Nash-Moser-H?rmander iteration scheme,we show that these solutions are asymptotically stable in the backward light-cone of the singularity.Furthermore,the result shows the existence of local energy blowup solutions to the 3D incompressible NS equations with growing data.Finally,the result also shows that in the absence of physical boundaries,the viscous vanishing limit of the solutions does not satisfy the 3D incompressible Euler equations.
