The international situation is evolving more impressively than it has at any time since the end of the Cold War. Globalization has been in decline. Nations are scrambling to gain greater influence. The intemational st...The international situation is evolving more impressively than it has at any time since the end of the Cold War. Globalization has been in decline. Nations are scrambling to gain greater influence. The intemational strategic pattern is being adjusted. Many countries have problems with public management, and are faced with a new array of social trends and increasingly popular movements. The world is entering a new era full of chaos and anxiety. Mankind once again faces significant trade-offs and choices in peace and conflict, development and recession, openness and isolation, liberalism and conservatism. China strives to advocate win-win cooperation and lead the trend of reform and opening to maintain a favorable external environment despite world chaos, and enhance status and institutional fights in the international system. China＇s 30 years of development was successful in the process of integrating into the existing international system; China is a participant as well as a builder of the international system, rather than a challenger or a subversive. In the future, with a constructive attitude, China will promote the international system in a more reasonable direction together with international partners, in order to better safeguard world peace and security, and promote sustainable development throughout the world.展开更多
In this paper, Yau’s conjecture on harmonic functions in Riemannian manifolds is generalized to Alexandrov spaces. It is proved that the space of harmonic functions with polynomial growth of a fixed rate is finite di...In this paper, Yau’s conjecture on harmonic functions in Riemannian manifolds is generalized to Alexandrov spaces. It is proved that the space of harmonic functions with polynomial growth of a fixed rate is finite dimensional and strong Liouville theorem holds in Alexandrov spaces with nonnegative curvature.展开更多
The Fourth Nuclear Security Summit—to be held in Washington,D.C.from March31 to April 1—will be of particular importance with regards to the Democratic People’s Republic of Korea’s recent announcement that it will...The Fourth Nuclear Security Summit—to be held in Washington,D.C.from March31 to April 1—will be of particular importance with regards to the Democratic People’s Republic of Korea’s recent announcement that it will conduct a nuclear warhead explosion test and the fifth anniversary of the Fukushima nuclear power plant accident in March.President Xi Jinping will attend the summit and elaborate on the global nuclear security situation and China’s nuclear security concept.展开更多
文摘The international situation is evolving more impressively than it has at any time since the end of the Cold War. Globalization has been in decline. Nations are scrambling to gain greater influence. The intemational strategic pattern is being adjusted. Many countries have problems with public management, and are faced with a new array of social trends and increasingly popular movements. The world is entering a new era full of chaos and anxiety. Mankind once again faces significant trade-offs and choices in peace and conflict, development and recession, openness and isolation, liberalism and conservatism. China strives to advocate win-win cooperation and lead the trend of reform and opening to maintain a favorable external environment despite world chaos, and enhance status and institutional fights in the international system. China＇s 30 years of development was successful in the process of integrating into the existing international system; China is a participant as well as a builder of the international system, rather than a challenger or a subversive. In the future, with a constructive attitude, China will promote the international system in a more reasonable direction together with international partners, in order to better safeguard world peace and security, and promote sustainable development throughout the world.
文摘In this paper, Yau’s conjecture on harmonic functions in Riemannian manifolds is generalized to Alexandrov spaces. It is proved that the space of harmonic functions with polynomial growth of a fixed rate is finite dimensional and strong Liouville theorem holds in Alexandrov spaces with nonnegative curvature.
文摘The Fourth Nuclear Security Summit—to be held in Washington,D.C.from March31 to April 1—will be of particular importance with regards to the Democratic People’s Republic of Korea’s recent announcement that it will conduct a nuclear warhead explosion test and the fifth anniversary of the Fukushima nuclear power plant accident in March.President Xi Jinping will attend the summit and elaborate on the global nuclear security situation and China’s nuclear security concept.
