Optimal allocation of financial resources is a critical factor in investment decisions. A proper action in this regard requires the existence of appropriate bases and investing tools and techniques in the capital mark...Optimal allocation of financial resources is a critical factor in investment decisions. A proper action in this regard requires the existence of appropriate bases and investing tools and techniques in the capital market. One of these effective methods which is considered as the basis of new investment strategies, in addition to multiple unique features, is called index tracking. By considering the undeniable role of this approach in the future of capital markets, its investigation and implementation have been considered in this research and so the problem of optimal Tehran Exchange Dividend Price Index （TEDPIX） tracker fund selection is studied using a hybrid approach of genetic algorithm and quadratic programming. Neural network was applied to simulate unavailable data. Results illustrate the exactness and acceptable performance of the formed portfolios in several iterations such that achieving similar and even better performance compared to the index is a distinctive characteristic of the proposed algorithm.展开更多
Despite the expansion of Chinese education and the steady rise in the educational level of urban and rural residents since reform and opening up, the problem of educational inequality has persisted. This study employs...Despite the expansion of Chinese education and the steady rise in the educational level of urban and rural residents since reform and opening up, the problem of educational inequality has persisted. This study employs CGSS2008 data to test the effects of household registration, family socio-economic status, years of parental education, and sibship size on educational opportunity at the three stages of junior middle school, senior middle school and higher education, as well as the changes in these effects over the period 1978-2008. The results show that there is no observable rural-urban disparity in opportunities for continuation to the junior middle school stage, but there is rising inequality in opporUmities for continuation to senior middle school and higher education; the influence of father＇s occupational status on children＇s educational opportunities remains largely the same, indicating that the stratification of educational attainment has not changed markedly since 1978： years of varental education play a marked and increasing role in children＇s educational attainment; and educational inequality due to sibship size also displays a rising tendency. To understand the structure and evolution of inequality in Chinese education since reform and opening up, it is necessary to study the micro-level mechanisms affecting residents＇ educational decision-making.展开更多
文摘Optimal allocation of financial resources is a critical factor in investment decisions. A proper action in this regard requires the existence of appropriate bases and investing tools and techniques in the capital market. One of these effective methods which is considered as the basis of new investment strategies, in addition to multiple unique features, is called index tracking. By considering the undeniable role of this approach in the future of capital markets, its investigation and implementation have been considered in this research and so the problem of optimal Tehran Exchange Dividend Price Index （TEDPIX） tracker fund selection is studied using a hybrid approach of genetic algorithm and quadratic programming. Neural network was applied to simulate unavailable data. Results illustrate the exactness and acceptable performance of the formed portfolios in several iterations such that achieving similar and even better performance compared to the index is a distinctive characteristic of the proposed algorithm.
基金is the outcome of "A Study of the Impact of Modern Education on Social Stratification and Mobility"(CFA090096),a topic for young scholars of education under the 11th Five-year Plan of the National Social Science Fund,with support from both the "Program for Supporting Outstanding Talent of the New Century"(2011) of the Ministry of Education and "Research on Educational Equality in China,"a major Shandong University project in the humanities and social sciences
文摘Despite the expansion of Chinese education and the steady rise in the educational level of urban and rural residents since reform and opening up, the problem of educational inequality has persisted. This study employs CGSS2008 data to test the effects of household registration, family socio-economic status, years of parental education, and sibship size on educational opportunity at the three stages of junior middle school, senior middle school and higher education, as well as the changes in these effects over the period 1978-2008. The results show that there is no observable rural-urban disparity in opportunities for continuation to the junior middle school stage, but there is rising inequality in opporUmities for continuation to senior middle school and higher education; the influence of father＇s occupational status on children＇s educational opportunities remains largely the same, indicating that the stratification of educational attainment has not changed markedly since 1978： years of varental education play a marked and increasing role in children＇s educational attainment; and educational inequality due to sibship size also displays a rising tendency. To understand the structure and evolution of inequality in Chinese education since reform and opening up, it is necessary to study the micro-level mechanisms affecting residents＇ educational decision-making.
