分数布朗运动下离散型亚式期权定价研究

在股票价格符合分数布朗运动环境下,建立了亚式期权的定价模型,运用概率的方法,给出了几何平均亚式期权和算术平均亚式期权的定价公式。并考察了H取不同值时离散型算术平均亚式期权价格的数值结果。     

分数布朗运动下支付红利的亚式期权定价

假设金融资产为有红利支付的股,利用分数Ito公式将几何平均亚式期权定价问题化成一个偏微分方程求解问题,通过偏微分方程求解,获得了分数布朗运动下有红利支付的几何平均亚式期权定价公式和平价公式。     

混合分数跳-扩散模型下的亚式期权定价

给出了标的资产服从混合分数跳-扩散过程的几何平均亚式期权定价的解析解.运用广义Ito引理和自融资交易策略得到混合分数布朗运动下带跳的几何平均亚式期权定价的偏微分方程模型.结合边值条件,通过求解该偏微分方程得到亚式期权定价的解析解.通过数值试验,讨论各定价参数对期权价值的影响.本文推广了一些已有的结论,所得结果更贴近实际金融市场.     

随机利率下亚式期权定价的新方法

讨论了利率服从Vasicek利率模型,股票价格遵循分数布朗运动的几何平均亚式期权定价问题。基于可靠性数学思想,在无套利条件下,给出了Vasicek利率模型下几何平均亚式期权的定价公式,推广了利率为常数或者关于t的函数的情形。     

分数布朗运动下红利亚式期权定价公式

在假定股票价格遵循由分数布朗运动驱动的随机微分方程的条件下,利用分数布朗运动随机分析理论,得到具有固定执行价格且有红利支付的几何平均亚式期权定价公式.     

分数型几何平均亚式期权的保险精算定价

在Mogens Bladt和Tina Haviid Rydberg无市场完备假设的条件下,仅利用价格过程实际概率的期权保险精算定价模型基础,得出了标的资产价格服从几何分数布朗运动的几何平均亚式期权定价公式,最后通过计算说明了Hurst参数对几何平均亚式看涨、看跌期权价值的影响.     

马尔可夫调制的双分数布朗运动模型下亚式期权定价

针对一种新的增量随机过程——马尔可夫调制的双分数布朗运动,基于可靠性数学思想,利用测度变换技巧将实际概率测度变换成等价鞅测度,研究了在此模型下连续时间的固定价格亚式期权定价问题;通过亚式期权所满足的概率密度转移函数,将经典的测度变换方法与拟鞅相结合,并推广到受双分数布朗运动驱动的B-S市场环境中,利用风险中性定价方法分别得到具有固定执行价格的几何平均亚式看涨和看跌期权的定价公式;双分数布朗运动不具有独立性和平稳增量性,更符合显示情形,且与基于分数布朗运动的期权定价公式进行比较分析,可知分数布朗运动只是双分数布朗运动的一种特殊情形,可基于双分数布朗运动对分数布朗运动的亚式期权期权定价模型进行推广。     

分数布朗运动环境中几何平均亚式期权的定价

假设股票价格受分数布朗运动驱动下,利用拟条件期望的方法,得到了浮动执行价格的几何平均亚式期权定价公式。     

基于鞅方法的几何亚式期权定价

本文以几何平均亚式期权为研究对象,假设股票价格过程服从几何布朗运动.运用鞅方法.得到其定价公式。     

分数Black-Scholes模型下美式亚式期权的近似定价法

在分数Black-Scholes模型下,首先应用偏微分方程法简要推导具有固定敲定价格的欧式几何平均亚式期权的定价公式,然后将标准Black-Scholes模型下美式期权定价的二次近似法推广到美式亚式期权,得到具有固定敲定价格的美式几何平均亚式期权价格的近似解析式.     

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     

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

正~~