The inherent selfishness of each node for the enhancement of message successful delivery ratio and the network overall performance improvement are reflected in the contradiction relationship of competition and coopera...The inherent selfishness of each node for the enhancement of message successful delivery ratio and the network overall performance improvement are reflected in the contradiction relationship of competition and cooperation in delay/disruption tolerant networks (DTN). In particular, the existence of malicious node aggravates this contradiction. To resolve this contradiction, social relationship theory and group theory of social psychology were adopted to do an in-depth analysis. The concrete balancing approach which leveraged Nash equilibrium theory of game theory was proposed to resolve this contradiction in reality. Thus, a new congestion control routing algorithm for security defense based on social psychology and game theory (CRSG) was put forward. Through the experiment, this algorithm proves that it can enhance the message successful delivery ratio by more than 15% and reduce the congestion ratio over 15% as well. This algorithm balances the contradiction relationship between the two key performance targets and made all nodes exhibit strong cooperation relationship in DTN.展开更多
Data are critically important to good decision-making. In an increasingly complex economy, conventional data collecting schemes are no longer sufficient. To deal with the challenge of maintaining its statistics releva...Data are critically important to good decision-making. In an increasingly complex economy, conventional data collecting schemes are no longer sufficient. To deal with the challenge of maintaining its statistics relevant to the users in an ever-shifting environment, the Banco de Portugal decided to explore the largely unused statistical potential of the available micro-databases and to integrate the existing administrative and survey data, thus enhancing the basic information infrastructure while protecting confidentiality. This presentation will address the benefits and problems to be dealt with when two or more data-sources are to be integrated.展开更多
How has regional competition between local governments contributed to rapid economic growth in China？ That is an issue deserving further exploration. The behavior of local governments has been influenced by central-l...How has regional competition between local governments contributed to rapid economic growth in China？ That is an issue deserving further exploration. The behavior of local governments has been influenced by central-local relations, especially by the fiscal and taxation reforms undertaken since the implementing of the tax-sharing system. After financial authority was centralized through the tax-sharing system, local governments gradually adopted a development model focusing on land appropriation, development and transfer, i.e., land finance. On the basis of Chinese provincial-level annual data, we can show that there is a close relationship between the tax-sharing system and land finance. Regardless of how we evaluate the land finance development model, the tax-sharing system represents a more rational institutional reform than the old system, because it has created a stable framework of interaction between the central government and local governments. The land-centered urban expansion model is an unforeseen consequence of this reform.展开更多
Based on the theory of sub-national governments＇ foreign affairs, this paper analyzes the role played by China＇s local governments at the time when China＇s central government was formulating polices to establish di...Based on the theory of sub-national governments＇ foreign affairs, this paper analyzes the role played by China＇s local governments at the time when China＇s central government was formulating polices to establish diplomatic relations with South Korea. China＇s local governments, with Shandong Province in particular, made strong attempts to lobby the central government on the economic need for enlarging bilateral trade and drawing investment from South Korea. These efforts played an active role on Sino-South Korean diplomatic normalization and further advanced the realization of diplomatic contacts already underway. Shandong Province＇s case shows that sub-national governments have been playing ever more important roles in China＇s overall diplomacy since the Reform and Opening Up of the economy, which began in 1978. In the multi-fold policy-making process by the central and local governments, it appears that the central government needs to respond to the reasonable interest case for engagement made by sub-national governments. How to accommodate the policy interests of the central and sub- national government entities is an important problem facing China＇s future diplomacy.展开更多
基金Projects(61202488, 61070199, 61103182) supported by the National Natural Science Foundation of China
文摘The inherent selfishness of each node for the enhancement of message successful delivery ratio and the network overall performance improvement are reflected in the contradiction relationship of competition and cooperation in delay/disruption tolerant networks (DTN). In particular, the existence of malicious node aggravates this contradiction. To resolve this contradiction, social relationship theory and group theory of social psychology were adopted to do an in-depth analysis. The concrete balancing approach which leveraged Nash equilibrium theory of game theory was proposed to resolve this contradiction in reality. Thus, a new congestion control routing algorithm for security defense based on social psychology and game theory (CRSG) was put forward. Through the experiment, this algorithm proves that it can enhance the message successful delivery ratio by more than 15% and reduce the congestion ratio over 15% as well. This algorithm balances the contradiction relationship between the two key performance targets and made all nodes exhibit strong cooperation relationship in DTN.
文摘Data are critically important to good decision-making. In an increasingly complex economy, conventional data collecting schemes are no longer sufficient. To deal with the challenge of maintaining its statistics relevant to the users in an ever-shifting environment, the Banco de Portugal decided to explore the largely unused statistical potential of the available micro-databases and to integrate the existing administrative and survey data, thus enhancing the basic information infrastructure while protecting confidentiality. This presentation will address the benefits and problems to be dealt with when two or more data-sources are to be integrated.
基金funding support from Shanghai universities’Twelve-Five Content Construction Project"Social Development in the Metropolis and the Construction of an Intelligent City"
文摘How has regional competition between local governments contributed to rapid economic growth in China？ That is an issue deserving further exploration. The behavior of local governments has been influenced by central-local relations, especially by the fiscal and taxation reforms undertaken since the implementing of the tax-sharing system. After financial authority was centralized through the tax-sharing system, local governments gradually adopted a development model focusing on land appropriation, development and transfer, i.e., land finance. On the basis of Chinese provincial-level annual data, we can show that there is a close relationship between the tax-sharing system and land finance. Regardless of how we evaluate the land finance development model, the tax-sharing system represents a more rational institutional reform than the old system, because it has created a stable framework of interaction between the central government and local governments. The land-centered urban expansion model is an unforeseen consequence of this reform.
基金This paper was originally presented at ＂The Tenth China＇s Korean Studies Symposium＂ held at Fudan University in Shanghai on October 24-25, 2009. The author thanks the financial support from China Postdoctoral Science Foundation and Asia Research Center of Fudan University and the author would like to thank Mr. Liu Ji-de, Professor Chen Zhi-min at Ftldan University, Professor Zhang Dong-ming at Liaoning University, Professor Yu Nai-Min at National Chengchi University, Professor Jae Ho Chung at Seoul National University, and Dr. Indira Ravindran for their helpful comments.
文摘Based on the theory of sub-national governments＇ foreign affairs, this paper analyzes the role played by China＇s local governments at the time when China＇s central government was formulating polices to establish diplomatic relations with South Korea. China＇s local governments, with Shandong Province in particular, made strong attempts to lobby the central government on the economic need for enlarging bilateral trade and drawing investment from South Korea. These efforts played an active role on Sino-South Korean diplomatic normalization and further advanced the realization of diplomatic contacts already underway. Shandong Province＇s case shows that sub-national governments have been playing ever more important roles in China＇s overall diplomacy since the Reform and Opening Up of the economy, which began in 1978. In the multi-fold policy-making process by the central and local governments, it appears that the central government needs to respond to the reasonable interest case for engagement made by sub-national governments. How to accommodate the policy interests of the central and sub- national government entities is an important problem facing China＇s future diplomacy.
