共查询到17条相似文献，搜索用时 109 毫秒
1.
陈雪东 《湖州师范学院学报》2004,26(1):17-20
保单组合的赔付次数及赔付额在非寿险精算的研究中是一项基本的内容，对于非同质保单而言，迭代算法是比较有效的，我们在已有结果的基础上，得到了更一般情形下非同质保单组合的赔付额分布的迭代算法，并就一个具体例子进行了讨论。 相似文献
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考虑一类再保险风险模型,其中保单以Poisson过程到达,而理赔次数服从复合Poisson-Geometric分布,利用鞅方法,得到了最终破产概率满足的一般公式及Lundberg不等式. 相似文献
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滕飞 《数学大世界(高中辅导)》2006,(9)
细细地感受生活,会发现生活中有很多关于随机变量的问题,这类问题主要是借助于随机变量函数的数学期望·下面通过例举来品味期望在生活中的应用.【例1】某保险公司设置某一险种,规定每一保单有效期为一年,有效理赔一次·每个保单收取保费500元,理赔额为10000元·据估计每个保单 相似文献
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建立了利息强度随时间连续变化,索赔额分布服从Pareto分布,索赔次数为更新过程的风险模型.获得了保险公司的有限时间破产概率的近似表达式. 相似文献
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带干扰的双负二项风险模型的破产概率 总被引：2，自引：0，他引：2
本文将经典的复合Poisson风险模型作为一般的推广,假设保单到达次数和理赔发生次数均服从负二项分布,并考虑随机干扰对盈余过程的影响,建立带干扰的双复合负二项风险模型;对此模型证明了调节系数的存在性,并利用复合负二项分布与复合Poisson分布的关系,得到了最终破产概率的一般表达式和破产概率的上限。 相似文献
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研究一类风险过程,其中保费收入为复合Poisson过程,而描述理赔发生的计数过程为保单到达过程的p-稀疏过程.运用鞅方法得出破产概率满足的Lundberg不等式和一般公式,给出当收取的保费和索赔额均为指数分布时破产概率的具体表达式,并通过数值计算研究了初始准备金的变化及保单到达和理赔发生之间的相互关系对保险公司经营的影响. 相似文献
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健康-疾病负担测量与医疗保险精算方法研究 总被引：7，自引：0，他引：7
测量居民的健康-疾病负担，关键步骤是将健康-疾病负担的多维状态转化成可量化的内容，最终表达为一个可直接比较的综合性衡量指标，并形成国际共识的标准方法。使用伤残调整期望寿命(Disability-adjusted life expectancy，DALE)和伤残调整寿命年(Disability—adjusted life year，DALY)来测量健康状况和疾病负担已逐步成为国际共识。在健康-疾病负担测量的基础上进行医疗保险精算研究，所要解决的问题包括疾病发生风险的估计、医疗保险定价、偿付能力估计、盈利能力估计、新险种开发等。疾病发生次数的分布形式是确定总医疗费支付的一个重要因素，另一个重要因素就是每次发生费用的分布，即损失分布。住院医疗保险是商业医疗保险的主要形式，而设计和开发重大疾病以及高额费用医疗险种，又是医疗保险精算人员的主要任务。在住院医疗保险的纯保费测算中，按保险合同规定确定预期赔付额是其关键技术。基本的精算过程是在拟合出已知住院费用和住院天数的分布(即医疗保险的损失分布)后，用矩估计、变换的矩估计、极大似然估计和基于贝叶斯理论的蒙特卡洛马尔柯夫链(Markov chain Monte Carlo，MCMC)等方法来估计预期住院费用和预期住院天数。 相似文献
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《湖州师范学院学报》2004,26(6):136-140
说明:《湖州师范学院学报》为综合版双月刊,全年出版6期,其中第1、2期为自然科学内容,第3、4、5、6期为哲学社会科学内容。数学研究作 者 年 期拟共形映射和Lipschitz条件褚玉明 2004 1……………………………………………………………………………………从Hardy空间到Bers型空间的加权复合算子李颂孝 2004 1…………………………………………………………………具有多滞后的时变区间动力系统的指数稳定性宋乾坤 2004 1………………………………………………………………非同质保单组合赔付额分布的迭代算法陈雪东 2004 1……… 相似文献
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Catherine De Rijdt Eva Tiquet Filip Dochy Maurice Devolder 《Teaching and Teacher Education》2006,22(8):1084-1093
Although many authors claim benefits of teaching portfolios for use in higher education settings, there are few empirical studies that investigate these benefits.This article deals with the question of whether teaching portfolios are used in higher education, and if so, which effects they bring about. Furthermore, the attitude of teachers towards the use of teaching portfolios is examined. The study shows that currently not very many teachers are using teaching portfolios. When used, a teaching portfolio is an instrument that can bring about some important positive effects. Respondents report that, due to the use of portfolios, they were stimulated to reflect on their own teaching, to actualise the learning content, to improve their course materials, to search for alternative educational methods, etc. When teachers are using teaching portfolios it is important that, besides any negative effects, they also experience positive effects. If this is not the case, teachers will see the teaching portfolio only as an extra administrative inconvenience. 相似文献
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《Educational Assessment》2013,18(3):237-259
This article reports on the interrater reliability of language arts portfolio assessment in the primary grades of the Rochester, New York, school system. This assessment was based on a sample of approximately 400 primary-grade language arts portfolios that were rated by two raters: the student's classroom teacher and an external reviewer. Reliabilities for student portfolios ranged from .58 for Grade 1 reading portfolios to .79 for kindergarten reading portfolios. Many of the reading portfolios could not be rated by the external reviewer, revealing problems both with the portfolio policies of the district and with the classroom-level implementation. The findings showed that primary-grade classroom teachers can reliably rate their own students' work, but tensions exist if a single portfolio system is intended both to provide classroom teachers with information about their students and to supply accountability information to administrators. 相似文献
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The paper examines the role of PISA in the globalisation of education policies. It approaches the question by assessing the effects of PISA on the ways in which new legislation was debated in national contexts in the period 1994–2013. The study asks: Has there been an increase in the number of references to the international community in debates on education policy due to PISA, and, if so, is this change confined to debates on education policy? Our analysis shows that education policy debates feature an increasingly global discourse in which organisations such as the OECD have an authoritative role. Yet, our findings do not support the claim that PISA is the cause of a change in this respect. Debating national policies in a global context and utilising the same transnational discourses regardless of the policy issue area in question has long been with us, yet there is a global trend in which national policies are increasingly often debated through appeals to models and policy advice promulgated by international organisations. 相似文献
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Fried Keesen Theo Wubbels Jan van Tartwijk 《International Journal for Academic Development》2013,18(2):8-16
Abstract During the last ten years universities in The Netherlands have become less dependent on national policies regarding salary structures, promotion criteria and reward systems. At the same time the government has put increased pressure on universities to take a serious look at the quality of education in general, and at the teaching qualities of the staff in particular. The effects of these policies on staff development at Dutch universities is described. The main focus is on recent initiatives by two universities, Utrecht and Maastricht, to improve the preparation of university teachers. For Utrecht a closer look is taken at the career system, in which the importance of teaching competence is upgraded; at the teacher training programme; and at the role of portfolios and assessment in the programme. The implications are discussed. 相似文献
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9个中央1号文件在"三农"政策上实现了转折性突破.20世纪80年代5个中央1号文件主要针对传统计划经济的弊端,实行放活政策和市场取向改革,重塑农村经营主体并为其营造宽松的发展环境;根据统筹城乡经济社会发展方略和"两个趋向"论断,新世纪初4个中央1号文件将农业养育工业的政策转变为工业反哺农业的政策,向"三农"提供更多的公共品,以改善"三农"发展的政策环境.认识突破与理论创新不仅为9个中央1号文件实现政策突破提供了理论支撑,还将积极影响未来"三农"事业的发展. 相似文献
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Jonathan Tummons 《Assessment & Evaluation in Higher Education》2010,35(7):847-857
This paper forms part of an exploration of assessment on one part‐time higher education (HE) course: an in‐service, professional qualification for teachers and trainers in the learning and skills sector which is delivered on a franchise basis across a network of further education colleges in the north of England. This paper proposes that the validity and reliability of portfolio‐based assessment, a key component of many HE programmes in addition to the course being researched here, is contestable. Analysis of the processes of compiling portfolios for assessment, through the conceptual framework of the New Literacy Studies, suggests that the ways in which portfolios are assessed and the ways in which the crucial requisites of validity and reliability are assigned to them, mask complexities and contradictions in their creation by the student. This paper argues for a new, critical analysis of portfolio production and raises a number of questions about the validity, reliability and authenticity of the assessment process that the portfolios reify. 相似文献
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文章研究了退保因素下保费收取过程及索赔总额均为复合Poisson过程的风险模型,运用鞅方法得出了破产概率满足的Lundberg不等式和一般公式,并给出了生存概率满足的积分—微分方程。 相似文献