索赔具有时间相关性的复合二项风险模型

提出了一种索赔具有时间相关性的复合二项风险模型,即假设在任何一个时间区间内每一个主索赔都以一定概率引起一个副索赔。讨论了该模型的Gerber-Shiu折现罚金函数,并且得到了Gerber-Shiu折现罚金函数的渐近解和解析解。     

投资收益总额为poisson过程的风险模型

通过讨论投资收益总额为复合poisson过程的风险模型,得到了其Gerber-Shiu折现罚金函数满足的积分-微分方程,并且在索赔额和收益额的分布为指数分布的情况下得到了Gerber-Shiu折现罚金函数及其相关精算量满足的微分方程。     

一类利率随机且理赔相依的带干扰风险模型

考虑了一类以几何布朗运动作为随机利率且索赔量与索赔间隔相依的带干扰的风险模型,得到了Gerber-Shiu折扣罚金函数满足的积分-微分方程及其初值条件,并给出了特殊条件下破产概率满足的三阶微分方程及其初值条件.     

常值利息力风险模型下Gerber-Shiu折现罚函数

文章研究常值利息力风险模型的破产问题,在理赔过程为齐次Poisson过程的条件下,得到Gerber-Shiu折现罚函数及其所满足的积分-微分方程,并进一步研究当索赔额为指数分布时破产概率的表达式.     

带两类离散时间风险过程的期望折现罚金函数

对带两种独立类型的保险风险的离散时间风险模型,我们假设第一类的索赔间隔时间是服从几何分布的随机变量,第二类索赔间隔时间是两个相互独立的各自服从几何分布的随机变量的总和,当两类的赔款服从几何分布时可以得到Gerber-Shiu期望折现罚金函数的表达式.由定义的Dickson-Hipp算子,得到罚金函数的简化表达式.     

带两类离散时间风险过程的期望折现罚金函数

对于包括两种独立类型的离散时间风险模型,假设第一类的索赔间隔时间是服从几何分布的随机变量,并且第二类索赔间隔时间是两个相互独立的各自服从几何分布的随机变量的总和,当两类的赔款服从几何分布时,便可以得到Gerber-Shiu期望折现罚金函数的表达式.     

山东省农村居民消费函数模型结构分析

消费函数模型是表现消费者行为的重要方式,也是研究国民收入、消费支出、积累等宏观经济变量之间相互关系的有效手段.然而消费函数模型理论众多,应根据本国和本地的实际情况,采取合理的消费函数模型.本文利用最小二乘法估计出在消费函数理论假设条件下四种山东省农村居民的消费函数模型,并对其进行分析和比较.找出了一种比较适合我省农村居民的消费函数模型.     

引入租赁的报童模型在加性需求下的一个基本结果

在引入租赁的报童模型及其利润函数的基础上,给出了加性需求下引入租赁的报童模型的平均利润函数和一个基本定理,并通过算例进行了验证。     

新课标下高中数学函数模型应用分析

基于分析新课标下高中数学函数模型应用。首先分析出新课标下高中数学函数模型应用的价值,能够帮助学生用函数的方法快速、有效的解决问题。其次分析出通过创设真实的问题情境;瞄准高考考点进行训练;科学有序建立函数模型三种途径,为学生精心设置函数问题,引导学生建立函数模型加以解决,不断强化学生的数学思维与建模能力,最终出将学生的数学能力与数学成绩的有效提升。     

支付函数不连续条件下的纳什均衡存在性

通过讨论支付函数的效用性质,用新方法证明了希克斯需求效用水平的不变性定理,讨论了支付函数连续条件下的纳什均衡存在性定理,指出了支付函数连续性对纳什均衡存在的必要性;讨论了支付函数不连续条件下的纳什均衡存在性,构造了一个模型,并说明在支付函数不连续的情况下纳什均衡的存在性.     

关于复合二项模型导致破产的索赔额分布

对于复合二项风险模型,文中首先给出Cerber-Shiu贴现惩罚函数所满足的瑕疵更新方程的解.通过选择适当的惩罚函数,给出了导致破产的索赔量分布函数的具体表达式.     

Dumbing down educational research: a response to John Wilson

The scheme offers operational guides based upon identifiable behaviours in a number of technical subjects classified, for rating purposes, with cognitive, affective and motor‐manipulative taxonomies. Two dimensions are postulated for each taxonomy, (i) complexity and (ii) extensiveness. The stages are briefly illustrated by reference to skilled performance in a number of crafts. Instructions for using the rating schedule to derive three profiles relevant to attainment are provided. Interpretations of profiles are suggested, including a tentative method for aggregating numerical scores for comparison with established examination grades at ‘O’ level and CSE. The results from a trial run with a simple version of the scheme are reported and discussed.

     

考虑孔隙损伤的黏弹性材料压力容器问题

应用线弹性微结构理论和黏弹性理论,讨论了带孔隙损伤的黏弹性材料压力容器问题.所得的解是准静态的.应力的解和线弹性的压力容器的应力解相同,位移场和损伤场与带孔隙损伤的线弹性材料压力容器问题的位移场和损伤场相似.     

World of Work: perceptions of people who are blind or vision impaired

Unemployment and underemployment have, for many years, been a social and economic problem for people with disabilities. This study looks at consumers’ perceptions of access to employment for people who are blind or vision impaired as one target group within the disability field. Using the Employment Access Questionnaire (EAQ), the perceptions of people who are blind or vision impaired were compared with the perceptions of people who are not blind or vision impaired (nondisabled). Results of the study indicated that people who are blind or vision impaired and people who are nondisabled view work as equally important in their lives. However, people who are blind or vision impaired reported that they were significantly less satisfied with career development and services and training opportunities as compared with their peers who were nondisabled. A factor analysis of the data gathered from 85 blind or vision impaired and 84 nondisabled participants revealed a four factor structure for the EAQ. These results are discussed with reference to previous work in this area and suggestions for future research are proposed.     

写作行为的动力系统

写作动力问题具有复杂性和潜隐性。受社会使命的驱使，顺应时代和社会的需要而写作的社会意识，抒发与表露生活感受，与读“神交”的宣泄意识，痴爱迷恋，在强迫性心理造成的“核爆”的冲击下写作的潜隐意识，是写作行为动力系统中的三个主要机组。     

NUMERICAL PROCEDURE FOR 3D ELLIPTIC FLOW ON NONSTAGGERED GRIDS

ＮＵＭＥＲＩＣＡＬＰＲＯＣＥＤＵＲＥＦＯＲ３ＤＥＬＬＩＰＴＩＣＦＬＯＷＯＮＮＯＮＳＴＡＧＧＥＲＥＤＧＲＩＤＳＺｈａｎｇＨｕｉ（张辉）（ＴｈｅｒｍｏｅｎｅｒｇｙＥｎｇｉｎｅｅｒｉｎｇＲｅｓｅａｒｃｈＩｎｓｔｉｔｕｔｅ）ＣｈｅｎＳｈａｎｎｉａｎ（陈善年）...     

Meeting the evolving education needs of faculty in providing access for college students with LD

Faculty play an essential role in providing access for college students with LD. Though many recommendations exist in the literature for educating faculty about their roles regarding students with LD, it is unclear whether these strategies are actually addressing faculty needs. To examine this issue, the evolving role of faculty is discussed. Current practices in faculty education pertaining to college students with LD are reviewed. Discrepancies between the evolving faculty role and current faculty education practices are examined. Guiding questions are proposed for expanding faculty education efforts and models to keep pace with the evolving faculty role in providing access for college students with LD.     

红山文化玉龙

红山文化玉龙发现数量较多,分为兽首龙、猪首龙和鸟首龙。红山文化玉龙造型为昂首、弯背、卷尾,整体大致呈圆形,首尾相接或相对。首尾相连者呈环形;首尾之间有小缺口者呈？形;首尾之间缺口较大者呈＂C＂字形。使用方法是吊挂在巫师胸前。玉龙是想象的灵物,是被崇拜和祭祀的对象,是巫师通天地的法器之一。通过玉龙通天达地,达到人与神的沟通,以实现人们祈祷的目的。