China's four decades of opening-up coincided with the trend of the world economy, and contributed to its own economic development. With a gradualist approach, China achieved opening-up without causing economic and so...China's four decades of opening-up coincided with the trend of the world economy, and contributed to its own economic development. With a gradualist approach, China achieved opening-up without causing economic and social repercussions, and unleashed institutional dividends that facilitated its reform and development. This approach has breathed lasting momentum and vitality into China's economic growth and structural transition, and improved China's industrial competitiveness and status in the international division of labor. As a basic national strategy and one of the country's five development concepts, opening-up is essential for China to pursue peaceful development and stand proudly in the family of nations. Facing new changes in domestic and international environments in the new era, particularly increasing competition among major countries such as China and the United States, China should proactively explore a new model of opening-up, refocus opening-up from policy supply to capacity building, and form a new pattern of opening-up on all fronts for high-quality economic development.展开更多
This paper is concerned with a system of semilinear parabolic equations with two free boundaries describing the spreading fronts of the invasive species in a mutualistic eco- logical model. The local existence and uni...This paper is concerned with a system of semilinear parabolic equations with two free boundaries describing the spreading fronts of the invasive species in a mutualistic eco- logical model. The local existence and uniqueness of a classical solution are obtained and the asymptotic behavior of the free boundary problem is studied. Our results indi- cate that two free boundaries tend monotonically to finite or infinite limits at the same time, and the free boundary problem admits a global slow solution with unbounded free boundaries if the intra-specific competitions are strong, while if the intra-specific competitions are weak, there exist the blowup solution and global fast solution.展开更多
文摘China's four decades of opening-up coincided with the trend of the world economy, and contributed to its own economic development. With a gradualist approach, China achieved opening-up without causing economic and social repercussions, and unleashed institutional dividends that facilitated its reform and development. This approach has breathed lasting momentum and vitality into China's economic growth and structural transition, and improved China's industrial competitiveness and status in the international division of labor. As a basic national strategy and one of the country's five development concepts, opening-up is essential for China to pursue peaceful development and stand proudly in the family of nations. Facing new changes in domestic and international environments in the new era, particularly increasing competition among major countries such as China and the United States, China should proactively explore a new model of opening-up, refocus opening-up from policy supply to capacity building, and form a new pattern of opening-up on all fronts for high-quality economic development.
文摘This paper is concerned with a system of semilinear parabolic equations with two free boundaries describing the spreading fronts of the invasive species in a mutualistic eco- logical model. The local existence and uniqueness of a classical solution are obtained and the asymptotic behavior of the free boundary problem is studied. Our results indi- cate that two free boundaries tend monotonically to finite or infinite limits at the same time, and the free boundary problem admits a global slow solution with unbounded free boundaries if the intra-specific competitions are strong, while if the intra-specific competitions are weak, there exist the blowup solution and global fast solution.