随机利率下保单组的生存年金精算模型

针对同质寿险保单组,在随机利率条件下,利用Wiener过程和Poisson过程联合建模,做出数值算例,给出随机利率下定期生存年金的趸缴纯保费及所承担的风险．通过分析发现：随着年龄的增大,定期生存年金趸缴纯保费逐渐降低;同一年龄的生存年金的趸缴纯保费随着利息力的增加而减少．     

不同利息力模型下生存年金的比较

给出了利息力分别为常数和、变量、随机变量时的生存年金精算现值模型及其等价模型,通过实例证明了采用不同利息力模型时,尽管整个支付期间利息力的均值相同,但生存年金精算现值仍具有一定的差异.     

随机利率模型下的变额年金定价研究

在随机利率环境下,当标的资产服从几何布朗运动时,探讨了具有终身取款利益保证(GLWB)的变额年金的定价.并将该变额年金产品分解为生存利益和死亡利益,给出相应的变额年金价格公式.对影响变额年金价格变化的因素进行了敏感性分析.     

基于模糊利率和随机死亡率下的生存年金精算现值模型

精算实务中保险给付大多以离散型为主.在模糊变量刻画的离散型利率条件下,利用具有非均值回复特性的带跳Feller过程描述连续型死亡率,通过精算学中的整值剩余寿命的定义方法,将其转化为离散型,从而建立离散型下生存年金精算现值模型,并给出了生存年金的趸缴纯保费的计算公式.     

论广义的递延年金

通过对递延年金涵义的分析,提出递延年金分广义的递延年金和狭义的递延年金,发现现行国内相关教材中年金分类与递延年金定义二者间的相互矛盾。在此基础上,认为递延年金现值计算容易出错的根源在于忽略了广义递延年金现值计算方法的介绍。给出了矛盾解决的办法,举例介绍了广义的递延年金现值计算公式。     

谈谈资金时间价值中年金终值与现值的计算

年金是资金时间价值中的一个重要概念，在《财务管理》、《管理会计》、《资产评估》等学科中都有广泛的应用。年金有普通年金、先付年金、递延年金和永续年金之分。本文就普通年金的终值系数与复利终值系数，普通年金的现值系数与复利现值系数，普通年金的终值、现值与先付年金的终值、现值，普通年金的现值与递延年金、永续年金的现值，它们之间的相互关系，从公式的推导并结合图示进行深入比较和分析，得出它们之间六个方面相互关系的结论，为初学者熟练掌握和理解这方面的知识有一定帮助。     

一类随机利率的寿险模型

针对一类随机利率的寿险模型，视利息力函数为一个布朗运动过程．对寿险理论中的连续生存年金，保费计算等进行了研究．获得了精算现值以及寿险保费的一些计算模型。     

我国企业年金的税收政策及其改进建议

企业年金越来越成为个人退休金计划的重要组成部分。在我国,由于对企业年金没有太多税收优惠,企业年金规模发展较慢。本文通过研究西方发达国家对企业年金的税收政策,结合当前我国企业年金税收政策,提出了一些参考建议,希望促进企业年金的发展。     

我国企业年金的税收政策及其改进建议

企业年金越来越成为个人退休金计划的重要组成部分.在我国,由于对企业年金没有太多税收优惠,企业年金规模发展较慢.本文通过研究西方发达国家对企业年金的税收政策,结合当前我国企业年金税收政策,提出了一些参考建议,希望促进企业年金的发展.     

我国企业年金市场刍议

从微观经济学的角度介绍了我国企业年金市场的现状和企业年金的市场结构,并进行了企业年金市场的供求分析,具体分为企业年金市场的供给现状分析、企业年金市场的需求现状分析、企业年金市场的供需趋势分析.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with