The most recent trends in population dynamics have provoked a rigorous debate whether the private or the public pension insurance system should be predominant. The pay-as-you-go system is dominated by the state that g...The most recent trends in population dynamics have provoked a rigorous debate whether the private or the public pension insurance system should be predominant. The pay-as-you-go system is dominated by the state that guarantees its stability. Private pension insurance provides personal retirement accounts and proper ownership of the accumulated funds, but its sustainability during prolonged market crises and inadequate risk sharing are often questioned. In order to address this issue, this paper makes both an assessment and analysis of the arguments put forward in favor of the preservation of the pay-as-you-go system and a comparison of this system with some of the main characteristics of the private accounts system. This is the basis for seeking the objectively defined role of the pay-as-you-go system in the conditions of the market economy. A couple of conclusions that have been formulated might be of interest for the future improvement of the organization and management of pension insurance.展开更多
Differences in level of medical expenditures and compensation ratio of medical expenditure among various subgroups in the older population according to age, gender, education, income and area have important public pol...Differences in level of medical expenditures and compensation ratio of medical expenditure among various subgroups in the older population according to age, gender, education, income and area have important public policy implications. This paper discusses these topics by data based on two waves of social surveys, a baseline in 2000 and a follow-up in 2006 named ＂The Sample Survey on Aged Population in Urban/Rural China （SSAPUR）＂. During the six years, the increasing speed of medical expenditure is rapid. The payout of medical expenditure of older people in 2000 was more conservative than that in 2006. Gender and urban-rural differences were also evident with regard to the compensation ratio of medical expenditure; older males and all urban older people had higher compensation ratios than elderly females and the rural older people, respectively. Compensation ratio also increased at age, as well as at education and income levels. Inequalities increased over the six-year period between surveys except when analyzed by area of residence and income levels. A comparison of factors affecting medical expenditure showed that the differences in medical expenditure between 2000 and 2006 had increased, though the influencing factors seemed to have become more reasonable.展开更多
Daily and annual average atmospheric environmental capacity coefficient(A-value) sequences for China's Mainland are calculated from hourly data recorded at 378 ground stations over 1975–2014. A-values at differen...Daily and annual average atmospheric environmental capacity coefficient(A-value) sequences for China's Mainland are calculated from hourly data recorded at 378 ground stations over 1975–2014. A-values at different recurrence intervals are calculated by fitting the sequences to Pearson type III distribution curves. Based on these A-values and source-sink balance(reference concentration 100 μg m^(-3)), atmospheric environmental capacities at the recurrence intervals are calculated for all of China's Mainland and each provincial administrative region. The climate average atmospheric environmental capacity reference value for the entire mainland is 2.169×10~7 t yr^(-1). An urban atmospheric load index is defined for analyses of the impact of population density on the urban atmospheric environment. Analyses suggest that this index is also useful for differentiating whether air quality changes are attributable to varying meteorological conditions or variations of artificial emission rate.Equations guiding the control of unorganized emission sources are derived for preventing air quality deterioration during urban expansion and population concentration.展开更多
文摘The most recent trends in population dynamics have provoked a rigorous debate whether the private or the public pension insurance system should be predominant. The pay-as-you-go system is dominated by the state that guarantees its stability. Private pension insurance provides personal retirement accounts and proper ownership of the accumulated funds, but its sustainability during prolonged market crises and inadequate risk sharing are often questioned. In order to address this issue, this paper makes both an assessment and analysis of the arguments put forward in favor of the preservation of the pay-as-you-go system and a comparison of this system with some of the main characteristics of the private accounts system. This is the basis for seeking the objectively defined role of the pay-as-you-go system in the conditions of the market economy. A couple of conclusions that have been formulated might be of interest for the future improvement of the organization and management of pension insurance.
文摘Differences in level of medical expenditures and compensation ratio of medical expenditure among various subgroups in the older population according to age, gender, education, income and area have important public policy implications. This paper discusses these topics by data based on two waves of social surveys, a baseline in 2000 and a follow-up in 2006 named ＂The Sample Survey on Aged Population in Urban/Rural China （SSAPUR）＂. During the six years, the increasing speed of medical expenditure is rapid. The payout of medical expenditure of older people in 2000 was more conservative than that in 2006. Gender and urban-rural differences were also evident with regard to the compensation ratio of medical expenditure; older males and all urban older people had higher compensation ratios than elderly females and the rural older people, respectively. Compensation ratio also increased at age, as well as at education and income levels. Inequalities increased over the six-year period between surveys except when analyzed by area of residence and income levels. A comparison of factors affecting medical expenditure showed that the differences in medical expenditure between 2000 and 2006 had increased, though the influencing factors seemed to have become more reasonable.
基金supported by the National Natural Science Foundation of China (Grant No. 41405136)
文摘Daily and annual average atmospheric environmental capacity coefficient(A-value) sequences for China's Mainland are calculated from hourly data recorded at 378 ground stations over 1975–2014. A-values at different recurrence intervals are calculated by fitting the sequences to Pearson type III distribution curves. Based on these A-values and source-sink balance(reference concentration 100 μg m^(-3)), atmospheric environmental capacities at the recurrence intervals are calculated for all of China's Mainland and each provincial administrative region. The climate average atmospheric environmental capacity reference value for the entire mainland is 2.169×10~7 t yr^(-1). An urban atmospheric load index is defined for analyses of the impact of population density on the urban atmospheric environment. Analyses suggest that this index is also useful for differentiating whether air quality changes are attributable to varying meteorological conditions or variations of artificial emission rate.Equations guiding the control of unorganized emission sources are derived for preventing air quality deterioration during urban expansion and population concentration.
