基于弱包含的区间值模糊集的上下近似

给出了区间值模糊集的弱包含概念,并在弱包含概念的基础上定义了区间值模糊集的上下近似及其粗糙度、得到了区间值模糊集上下近似的性质,并且验证了本文定义的区间值模糊集的λ上下近似比文献[1]中提出的λ 上下近似逼近程度更高,粗糙度更小.     

Bayesian graduation of mortality rates: An application to reserve evaluation

This paper presents Bayesian graduation models of mortality rates, using Markov chain Monte Carlo (MCMC) techniques. Graduated annual death probabilities are estimated through the predictive distribution of the number of deaths, which is assumed to follow a Poisson process, considering that all individuals in the same age class die independently and with the same probability. The resulting mortality tables are formulated through dynamic Bayesian models. Calculation of adequate reserve levels is exemplified, via MCMC, making use of the value at risk concept, demonstrating the importance of using “true” observed mortality figures for the population exposed to risk in determining the survival coverage rate.     

Initial Value Problem for a Generalized Korteweg－de Vries Equation with Singular Integral－Differential Terms

ＩｎｉｔｉａｌＶａｌｕｅＰｒｏｂｌｅｍｆｏｒａＧｅｎｅｒａｌｉｚｅｄＫｏｒｔｅｗｅｇ－ｄｅＶｒｉｅｓＥｑｕａｔｉｏｎｗｉｔｈＳｉｎｇｕｌａｒＩｎｔｅｇｒａｌ－ＤｉｆｆｅｒｅｎｔｉａｌＴｅｒｍｓＺｈａｎｇＬｉｎｇａｉ（张领海）（ＩｎｓｔｉｔｕｔｅｏｆＡ...     

The Global Classical Solution of the Initial Boundary Value Problem for Generalized KdV Equation

ＴｈｅＧｌｏｂａｌＣｌａｓｓｉｃａｌＳｏｌｕｔｉｏｎｏｆｔｈｅＩｎｉｔｉａｌＢｏｕｎｄａｒｙＶａｌｕｅＰｒｏｂｌｅｍｆｏｒＧｅｎｅｒａｌｉｚｅｄＫｄＶＥｑｕａｔｉｏｎ￥ＭｉａｏＣｈｅｎｘｉａ（苗晨霞）（ＩｎｓｔｉｔｕｔｅｏｆＡｐｐｌｉｅｄＰｈｙｓｉｃ...     

二阶常微分方程及Thomas－Fermi方程的边值问题

本文利用上、下解方法推广了Ｍ．Ｌｅｅｓ关于半线性边值问题的结果，给出了另一类边值问题解的存在唯一性的一个充分条件；并利用所得的结果证明了Ｔｈｏｍａｓ－Ｆｅｒｍｉ方程的边值问题解的存在唯一性，从而推广了Ｃ．ＤＬｕｎｉｎｇ的结果．     

伪抛物型复方程的Riemann─Hilbert初边值问题的可解性及其近似解的误差估计

本文使用参数开拓法证明了非线性伪抛物型复方程在多连通区域上的Ｒｉｅｍａｎｎ－Ｈｉｌｂｅｒｔ初边值问题的可解性，并对近似解作出了误差估计。     

具有转向点的奇摄动非线性边值问题的非单调内部层性质

本文在ｆｙ（０，ｙ，ｙ＇）＝０（对所有ｙ，ｙ＇），即ｆ在ｔ＝０具有转向点的主要假设下研究非线性奇摄动问题εｙ＇＇＝ｆ（ｔ，ｙ，ｙ＇），ｙ（－１，ε）＝Ｂ，对充分小的ε＞０，建立了在转向点ｔ＝０呈两类非单调向部层（尖层或非单调过渡层）性态的解的存在性准则。     

引起光电直读光谱仪光强值下降的几个因素和解决办法

本文根据光电直读光谱仪日常操作经验,提出了光谱仪光强值下降的几个因素和解决的办法.     

具非线性控制变量的非自治松驰系统时间最优追踪控制问题中的若干结果

本文讨论了一类广义非自治离散松驰系统的时间最优控制问题，将R^n中点曲线的目标约束推广为凸集值函数的超曲线约束．在证明了松驰系统与原系统可达集相等的基础上，得到了最优控制的存在性．由凸集分离定理及终端时间闺值函数方程，我们获得了最大值原理及最优控制时间的确定方法．较之Hamilton方法，本文的条件更一般．离散松驰系统的相关结论可以用于分散控制．     

A value for bi-cooperative games

Bi-cooperative games were introduced by Bilbao et al. as a generalization of TU cooperative games, in which each player can participate positively, negatively, or not at all. In this paper, we propose a definition of a share of the worth obtained by some players after they decided on their participation in the game. It turns out that the cost allocation rule does not look for a given player to her contribution at the opposite participation option to the one she chooses. The relevance of the value is discussed on several examples.