Social health insurance is an important part of the social security system. It is the ＂stabilizer＂ of social and economic development and the ＂buffer＂ of reform. It is of great significance and function to the con...Social health insurance is an important part of the social security system. It is the ＂stabilizer＂ of social and economic development and the ＂buffer＂ of reform. It is of great significance and function to the construction of economic development, social progrcss and harmonious society. However, due to many factors, the operation of the social health insurance fund is facing greater risk. Although the balance is rich, but the general talk about the ＂balance＂, inevitably fall into the ＂too optimistic, ignore the risk＂ of the errors, the current basic medical insurance system, compared with working employees, retirement elderly people do not pay, personal accounts into more, The overall proportion of individual funds to pay lower policy concessions. Although there is a large amount of surplus in the annual health insurance fund, a large part of the balance is due to the relatively young age structure of the insured population and the low consumption of health insurance funds. With the increasing level of the aging of the insured population, the ratio of on-the-job and the backward is gradually reduced, the effect of these preferential policies will continue to enlarge, making the total fund expenditure increased significantly. Therefore, it is an important task to reform the basic medical insurance system in China to strengthen the research on risk control in the medical insurance fund of urban workers, to prevent and control the risks faced by the fund and to ensure the safety of the fund.展开更多
Earthquake disaster risk,as a typical social disaster risk,is one of the most important risks in modern Chinese society.This study gives definitions of the institution,describes the formation history,the connotations ...Earthquake disaster risk,as a typical social disaster risk,is one of the most important risks in modern Chinese society.This study gives definitions of the institution,describes the formation history,the connotations and development and analyzes its role in the control of major social risks caused by earthquakes.Finally,the paper presents recommendations for continuous improvement of this institution under the guidance of risk society theory,and for its application to the government reform and social governance.展开更多
Joint loan guarantee contracts and mutual guarantee contracts among SMEs form the basis of SME guarantee networks. The expansion of these networks increases the fragility of a financial system as a result of the regio...Joint loan guarantee contracts and mutual guarantee contracts among SMEs form the basis of SME guarantee networks. The expansion of these networks increases the fragility of a financial system as a result of the regional and industrial risk contagion embedded within them. By providing a theoretical framework of a loan guarantee network, a method is proposed for calculating the amount of risk spillover caused by loan guarantees taking the perspective of the entire network. In addition,the route of risk contagion in guarantee networks is analyzed, revealing that when default risk shocks occur, risk contagion travels along the nodes not once but for several rounds and that the risk control of one firm cannot prevent these systemic risks. Therefore, a risk control scheme is designed based on the location and importance of firms in the network. Using data from a real guarantee network,we demonstrate that identifying the node locations of firms' in the guarantee network(including the coritivity and closeness of the firm) can help in understanding risk contagion mechanisms and preventing systemic credit risk before a crisis occurs.展开更多
The present paper studies time-consistent solutions to an investment-reinsurance problem under a mean-variance framework.The paper is distinguished from other literature by taking into account the interests of both an...The present paper studies time-consistent solutions to an investment-reinsurance problem under a mean-variance framework.The paper is distinguished from other literature by taking into account the interests of both an insurer and a reinsurer jointly.The claim process of the insurer is governed by a Brownian motion with a drift.A proportional reinsurance treaty is considered and the premium is calculated according to the expected value principle.Both the insurer and the reinsurer are assumed to invest in a risky asset,which is distinct for each other and driven by a constant elasticity of variance model.The optimal decision is formulated on a weighted sum of the insurer’s and the reinsurer’s surplus processes.Upon a verification theorem,which is established with a formal proof for a more general problem,explicit solutions are obtained for the proposed investment-reinsurance model.Moreover,numerous mathematical analysis and numerical examples are provided to demonstrate those derived results as well as the economic implications behind.展开更多
文摘Social health insurance is an important part of the social security system. It is the ＂stabilizer＂ of social and economic development and the ＂buffer＂ of reform. It is of great significance and function to the construction of economic development, social progrcss and harmonious society. However, due to many factors, the operation of the social health insurance fund is facing greater risk. Although the balance is rich, but the general talk about the ＂balance＂, inevitably fall into the ＂too optimistic, ignore the risk＂ of the errors, the current basic medical insurance system, compared with working employees, retirement elderly people do not pay, personal accounts into more, The overall proportion of individual funds to pay lower policy concessions. Although there is a large amount of surplus in the annual health insurance fund, a large part of the balance is due to the relatively young age structure of the insured population and the low consumption of health insurance funds. With the increasing level of the aging of the insured population, the ratio of on-the-job and the backward is gradually reduced, the effect of these preferential policies will continue to enlarge, making the total fund expenditure increased significantly. Therefore, it is an important task to reform the basic medical insurance system in China to strengthen the research on risk control in the medical insurance fund of urban workers, to prevent and control the risks faced by the fund and to ensure the safety of the fund.
基金sponsored by the National Social Science Fund of China "Research on the Status,Efficiencies and the Policy on the National Significant Seismic Monitoring and Protection Regions"(11&ZD054)
文摘Earthquake disaster risk,as a typical social disaster risk,is one of the most important risks in modern Chinese society.This study gives definitions of the institution,describes the formation history,the connotations and development and analyzes its role in the control of major social risks caused by earthquakes.Finally,the paper presents recommendations for continuous improvement of this institution under the guidance of risk society theory,and for its application to the government reform and social governance.
基金supported by the National Nature Science Foundation of China under Grant Nos.71172186,71472148,71572144 and 71502138
文摘Joint loan guarantee contracts and mutual guarantee contracts among SMEs form the basis of SME guarantee networks. The expansion of these networks increases the fragility of a financial system as a result of the regional and industrial risk contagion embedded within them. By providing a theoretical framework of a loan guarantee network, a method is proposed for calculating the amount of risk spillover caused by loan guarantees taking the perspective of the entire network. In addition,the route of risk contagion in guarantee networks is analyzed, revealing that when default risk shocks occur, risk contagion travels along the nodes not once but for several rounds and that the risk control of one firm cannot prevent these systemic risks. Therefore, a risk control scheme is designed based on the location and importance of firms in the network. Using data from a real guarantee network,we demonstrate that identifying the node locations of firms' in the guarantee network(including the coritivity and closeness of the firm) can help in understanding risk contagion mechanisms and preventing systemic credit risk before a crisis occurs.
基金supported by National Natural Science Foundation of China (Grant Nos. 11301376, 71201173 and 71571195)China Scholarship Council, the Natural Sciences and Engineering Research Council of Canada (NSERC)+2 种基金Society of Actuaries Centers of Actuarial Excellence Research Grant, Guangdong Natural Science Funds for Distinguished Young Scholar (Grant No. 2015A030306040)Natural Science Foundation of Guangdong Province of China (Grant No. 2014A030310195)for Ying Tung Eduction Foundation for Young Teachers in the Higher Education Institutions of China (Grant No. 151081)
文摘The present paper studies time-consistent solutions to an investment-reinsurance problem under a mean-variance framework.The paper is distinguished from other literature by taking into account the interests of both an insurer and a reinsurer jointly.The claim process of the insurer is governed by a Brownian motion with a drift.A proportional reinsurance treaty is considered and the premium is calculated according to the expected value principle.Both the insurer and the reinsurer are assumed to invest in a risky asset,which is distinct for each other and driven by a constant elasticity of variance model.The optimal decision is formulated on a weighted sum of the insurer’s and the reinsurer’s surplus processes.Upon a verification theorem,which is established with a formal proof for a more general problem,explicit solutions are obtained for the proposed investment-reinsurance model.Moreover,numerous mathematical analysis and numerical examples are provided to demonstrate those derived results as well as the economic implications behind.
