EPV算子在障碍期权定价中的应用(英文)

讨论了在一般Levy过程下的障碍期权定价方法.其障碍是随时间线性变化的,且当标的资产价值超过该障碍时,该期权变为一个普通的美式期权.首先应用EPV算子解决一个带有分红的最优停时问题并应用该结果来定价美式看跌期权.然后,对于永久性的障碍期权,推导出了明确的定价公式,而对于具有有限到期日的该种期权,应用随机化的方法估计该期权的价值.     

随机利率和随机寿命下的欧式未定权益定价

在Hull-Whire利率模型且股票价格遵循指数0-U过程的情形下,讨论了有连续红利的一般欧式股票期权和外汇期权定价,并进一步考虑了合约在到期日前被终止的可能性,得到了随机寿命下的欧式未定权益的定价公式．     

基于跳跃-扩散过程的股票期权定价分析

该文研究股票价格服从跳跃-扩散过程时的股票期权定价问题。金融市场的不断发展涌现出众多的金融理财产品,传统股票期权定价模型难以合理描述突发性的股票价格变动,而在实际情况中股票价格因受国际局势、地区政策以及突发问题等影响会急剧性上涨或下跌,因此传统股票期权定价模型对于实际金融市场缺乏一定的适用性。基于此,该文通过股票价格的跳跃-扩散过程,利用鞅方法将股票定价问题转化为期望求解问题,推导出股票价格行为服从跳跃-扩散过程的期权定价公式。     

随机利率和跳-扩散过程下具有随机寿命的未定权益定价

在利率服从Hull-White-Vasicek利率模型、风险资产服从跳-扩散过程的假设下,建立具有随机寿命的欧式未定权益定价模型.对具有随机寿命的养老金合约、保险合同、股票期权、远期合约和可转换债券等欧式未定权益进行定价,得到具体的欧式未定权益定价公式.     

基于NIG模型的远期开始期权的定价

在标的资产价格服从指数NIG过程的条件下研究远期开始期权的定价问题．首先通过测度变换,把到期收益的期望转化成了示性函数的期望,从而得到了用对数收益的特征函数的积分表示的远期开始看涨、看跌期权的定价公式;其次讨论了期权价格对标的资产价格和时间的敏感性．     

标的资产服从一般Ito随机过程的期权定价模型

首先介绍标准的B1acke-Scholes期权定价模型，然后在假设标的资产(以股票为例)价格服从一般的Ito随机过程，即标的股票价格变化为非线性的情况下，推导了一个新的期权定价模型，结合边界条件给出了数值求解该方程的有限差分法，推广了一些已有的结果。     

带有信用风险的远期起点期权定价

远期起点期权是一种路径依赖型期权,由于它具有远期开始的性质,因此受到投资者的关注,给该期权进行合理定价具有重要意义.首先建立有多个扩散源的标的资产价格过程和承约方资产价格过程的随机微分方程,然后通过测度变换的方法推导出了带有信用风险的远期起点期权的定价公式,推广了以前的相关结果.     

基于Hull-White利率下O-U过程的复合期权定价

采用Hull-White模型和指数O-U过程来刻画利率和股票价格的变化规律,考虑到标的资产价格和利率的随机性与均值回复性,利用鞅理论和Girsanov定理,研究了股票价格在随机利率下遵循指数O-U过程的复合期权定价问题,得到了复合期权的定价公式.     

沪市认购权证与标的股票的高频数据协整分析

权证定价常采用Black-Scholes期权定价模型,但Black-Scholes期权定价模型有很多严格的假设条件,标的资产对定价的影响较大.当权证与标的股票之间不存在协整关系时,Black-Scholes期权定价模型不能有效确定权证的价格.应用EG两步检验法和Johansen检验法对沪市认购权证和其标的股票进行协整检验,检验结果表明权证和其标的股票之间不存在协整关系.认购权证的价格走势脱离其标的股票而独立运动,这使得应用Black-Scholes期权定价模型为权证定价具有一定的局限性.我国的权证市场有很大的投机性.     

对欧式期权B-S模型的推广

对欧式期权定价的B-S模型进行了推广。即假设股票价格过程服从布朗运动和泊松过程，且在有效期连续分红的情况下，导出股票衍生证券的定价模型及其推广形式，并得到相应的求解公式，同时表明了传统的定价公式是新公式的特殊情况。     

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     

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     

Journal of Donghua University ( English Edition) Contents of Volume 31

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Brief Introduction to “Journal of Jilin University( Science Edition) ”

<正>"Journal of Jilin University(Science Edition)"is a comprehensive academic journal in the fields of science sponsored by Jilin University and administrated by the Ministry of Education of the Peoples Republic of China.The journal started publication in 1955.The original name at starting publication was"Journal of Natural Science of Northeast People University",which was changed into"Acta Scientiarum Naturalium Universitatis Jilinensis"in 1958 owing to the name change of the university.The present journal name has