In this paper,a class of reaction diffusion processes with general reaction rates is studied.A necessary and sufficient condition for the reversibility of this calss of reaction diffusion processes is given,and then t...In this paper,a class of reaction diffusion processes with general reaction rates is studied.A necessary and sufficient condition for the reversibility of this calss of reaction diffusion processes is given,and then the ergodicity of these processes is proved.展开更多
The velocity profiles and properties of proto-magnetar winds are investigated. It is found that the corotation of wind matter with magnetic field lines significantly affects r-process nucleosynthesis and could lead to...The velocity profiles and properties of proto-magnetar winds are investigated. It is found that the corotation of wind matter with magnetic field lines significantly affects r-process nucleosynthesis and could lead to long duration γ-ray bursts and hyper-energetic supernovae.展开更多
Recently, China, Japan, and the Republic of Korea （Korea） are conducting a government-commis- sioned feasibility study on the Free Trade Agreement among the three countries （CJKFTA） to form a regional free trade z...Recently, China, Japan, and the Republic of Korea （Korea） are conducting a government-commis- sioned feasibility study on the Free Trade Agreement among the three countries （CJKFTA） to form a regional free trade zone in East Asia. Considering that freer trade can cause unexpected impact on domestic environment, there is a need to evaluate the environmental impact of such a trade policy. This move should be made to help negotiators understand and pay more attention to environ- mental issues during CJKFTA negotiations, and to help lobby with the government to carry out appropriate policy instruments for adaptation or mitigation. Following the Chain Reaction Assessment Method that integrates and links the elements of trade, production, and environment, the present research aims to quantitatively assess CJKFTA＇s possible impact on China＇s environment. This is done by estimating the variations of China＇s major conventional pollutants and greenhouse gases （GHGs） emission in two policy scenarios to represent CJKFTA＇s scale and composition effects on China＇s environment. Estimating the variations is based on a static Computable General Equilibrium model, working with Global Trade Analysis Project （GTAP） 7 database and China＇s energy- environment statistics. Based on these assessments, CJKFTA is predicted to lead to notable environmental impact, including increased emissions of agricultural total nitrogen, agricultural total phosphorus, chemical oxygen demand, and GHGs. On the other hand, decreased emissions of industrial SO2 and dust are also expected to happen. Suitable policies need to be made to combat negative effects and amplify positive ones, while aiming at a more sustainable regional freer trade system.展开更多
基金Ying-Tung Fok Education Foundation and NSFCNSFC and by Anhui Education Commitee..
文摘In this paper,a class of reaction diffusion processes with general reaction rates is studied.A necessary and sufficient condition for the reversibility of this calss of reaction diffusion processes is given,and then the ergodicity of these processes is proved.
基金supported by the National Basic Research Program of China(2009CB824800)the research grants of Changsha University of Science and Technology
文摘The velocity profiles and properties of proto-magnetar winds are investigated. It is found that the corotation of wind matter with magnetic field lines significantly affects r-process nucleosynthesis and could lead to long duration γ-ray bursts and hyper-energetic supernovae.
文摘Recently, China, Japan, and the Republic of Korea （Korea） are conducting a government-commis- sioned feasibility study on the Free Trade Agreement among the three countries （CJKFTA） to form a regional free trade zone in East Asia. Considering that freer trade can cause unexpected impact on domestic environment, there is a need to evaluate the environmental impact of such a trade policy. This move should be made to help negotiators understand and pay more attention to environ- mental issues during CJKFTA negotiations, and to help lobby with the government to carry out appropriate policy instruments for adaptation or mitigation. Following the Chain Reaction Assessment Method that integrates and links the elements of trade, production, and environment, the present research aims to quantitatively assess CJKFTA＇s possible impact on China＇s environment. This is done by estimating the variations of China＇s major conventional pollutants and greenhouse gases （GHGs） emission in two policy scenarios to represent CJKFTA＇s scale and composition effects on China＇s environment. Estimating the variations is based on a static Computable General Equilibrium model, working with Global Trade Analysis Project （GTAP） 7 database and China＇s energy- environment statistics. Based on these assessments, CJKFTA is predicted to lead to notable environmental impact, including increased emissions of agricultural total nitrogen, agricultural total phosphorus, chemical oxygen demand, and GHGs. On the other hand, decreased emissions of industrial SO2 and dust are also expected to happen. Suitable policies need to be made to combat negative effects and amplify positive ones, while aiming at a more sustainable regional freer trade system.
