Similar inconsistence in catalogue and sequence in WenXuan(or The Selected Works) has widely been found in the one-author books which were not compiled in haste. Therefore, it is of no essential significance to invest...Similar inconsistence in catalogue and sequence in WenXuan(or The Selected Works) has widely been found in the one-author books which were not compiled in haste. Therefore, it is of no essential significance to investigate whether or not the book was compiled by one author and whether it was written in haste. That might not be a problem for the compilers, but proves to be an obvious problem for the researchers. In Luo Hong-kai’s Introduction to WenXuan, similar or more serious problems can be detected, which proves persuasively the point.展开更多
基于GEVcdn模型(generalized extreme value conditional density network)构建了珠江流域非一致性洪水频率模型。结果表明:多数站点呈非一致性变化特征,主要分布在西江和东江;在某些传统洪涝灾害易发区域,洪水极值序列呈上升趋势,将面...基于GEVcdn模型(generalized extreme value conditional density network)构建了珠江流域非一致性洪水频率模型。结果表明:多数站点呈非一致性变化特征,主要分布在西江和东江;在某些传统洪涝灾害易发区域,洪水极值序列呈上升趋势,将面临更加严峻的防洪风险。珠江流域洪水集中发生在两个时段,即1960年代和1990年代中期以后;基于非一致性算法的重现期体现出与一致性算法重现期的明显区别;珠江流域主要堤围基于非一致性算法的失败风险明显高于一致性条件下的失败风险而显示出较大的隐患。展开更多
This paper investigates the dividend problem with non-exponential discounting in a dual model.We assume that the dividends can only be paid at a bounded rate and that the surplus process is killed by an exponential ra...This paper investigates the dividend problem with non-exponential discounting in a dual model.We assume that the dividends can only be paid at a bounded rate and that the surplus process is killed by an exponential random variable.Since the non-exponential discount function leads to a time inconsistent control problem,we study the equilibrium HJB-equation and give the associated verification theorem.For the case of a mixture of exponential discount functions and exponential gains,we obtain the explicit equilibrium dividend strategy and the corresponding equilibrium value function.Besides,numerical examples are shown to illustrate our results.展开更多
文摘Similar inconsistence in catalogue and sequence in WenXuan(or The Selected Works) has widely been found in the one-author books which were not compiled in haste. Therefore, it is of no essential significance to investigate whether or not the book was compiled by one author and whether it was written in haste. That might not be a problem for the compilers, but proves to be an obvious problem for the researchers. In Luo Hong-kai’s Introduction to WenXuan, similar or more serious problems can be detected, which proves persuasively the point.
文摘基于GEVcdn模型(generalized extreme value conditional density network)构建了珠江流域非一致性洪水频率模型。结果表明:多数站点呈非一致性变化特征,主要分布在西江和东江;在某些传统洪涝灾害易发区域,洪水极值序列呈上升趋势,将面临更加严峻的防洪风险。珠江流域洪水集中发生在两个时段,即1960年代和1990年代中期以后;基于非一致性算法的重现期体现出与一致性算法重现期的明显区别;珠江流域主要堤围基于非一致性算法的失败风险明显高于一致性条件下的失败风险而显示出较大的隐患。
基金Supported by the Shandong Provincial Natural Science Foundation of China(ZR2020MA035 and ZR2023MA093)。
文摘This paper investigates the dividend problem with non-exponential discounting in a dual model.We assume that the dividends can only be paid at a bounded rate and that the surplus process is killed by an exponential random variable.Since the non-exponential discount function leads to a time inconsistent control problem,we study the equilibrium HJB-equation and give the associated verification theorem.For the case of a mixture of exponential discount functions and exponential gains,we obtain the explicit equilibrium dividend strategy and the corresponding equilibrium value function.Besides,numerical examples are shown to illustrate our results.
