基于Black-scholes公式下美式期权价格的计算

基于期权定价的基本理论,研究美式看涨期权与欧式看涨期权之间的关系; 在Black-Scholes公式假设条件下,利用鞅和停时理论,得美式看涨期权的价格与欧式看涨期权的价格相等;探讨美式看跌期权价格的数字化计算,在相关假设条件下,利用基于最优化时的变分不等式证明了美式看跌期权价格的有界性,并介绍了几种美式看跌期权价格的数字化计算方法.     

排污权期权价值评估模型研究

应用实物期权理论,尝试建立的排污权期权价值评估模型,给出了关于时间、购买排污权支出等排污权期权价值解析表达式.利用此解析表达式,不仅可以帮助厂商分析和评估所要购买的排污权期权价值,还有助于厂商做出是否购买排污权的科学决策.当排污权的期权价格小于当前市场价格、排污权期权价值为零时,厂商会选择放弃购买排污权,而当排污权的期权价格高于当前市场价格时,厂商会购买排污权,但其获得的排污权期权价值则取决于排污权的期权价格高于当前价格的程度.     

基础资产不可交易条件下欧式期权的消费效用无差别定价

基于消费效用无差别准则,讨论非完备市场下欧式期权定价问题.在完备市场下,验证了关于一般效用函数的效用无差别定价等同于经典Black-Scholes期权定价.在非完备市场下,通过假设投资者具有CARA效用,发现期权消费效用无差别价格会随期权标的资产价格波动率增加或期限延长反而降低.风险态度只有与期权非系统风险相结合才对期权消费效用无差别价格产生影响,期权的非系统风险越小,风险态度对期权效用无差别价格影响越弱,当非系统风险为零时,投资者风险态度不对期权价格产生影响.     

需求均匀分布条件下基于期权交易的零售商订货模型

在供应链中,成员企业通过合作来降低不确定性.通过分析看涨期权的可交易性,将零售商初始订货批量和初始看涨期权购买量作为决策变量,考虑看涨期权价格和执行价格的可变性,以总成本最小为目标,建立了需求为均匀分布条件下的零售商订货模型.通过模型求解和算例分析得出,零售商在看涨期权可交易时比看涨期权不可交易时的初始订货批量要小,而且两者的差额与看涨期权的交易价格有关.同时,随着看涨期权初始执行价格的增加,零售商在期权可交易时的初始订货量比期权不可交易时增长得更快,看涨期权初始购买量减少得更慢.     

混合高斯和带跳模型下的亚式幂期权定价

考虑到经典的Black-Scholes(B-S)期权定价模型不能描述资产价格的长相依性和跳跃现象,用混合高斯和带跳模型描述标的资产价格的变动过程.首先,得到了几何平均亚式幂期权价格所满足的数学模型.其次,分别获得了几何平均亚式看涨和看跌幂期权的定价公式.最后,讨论了参数对期权价格的敏感性.     

美式垄断期权定价的数学分析

介绍了美式垄断期权这一金融产品的数学模型.它的定价问题是一个退化的抛物型变分不等式,也是一个自由边界(即最佳实施边界)问题. 该文主要运用微分方程方法分析讨论,并与美式标准期权及美式交叉期权进行对比,得到以下应用结果：美式垄断期权并不是美式标准看涨和看跌期权的简单叠加.其价格比敲定价格相同的美式交叉期权便宜,但比以低价为敲定价格的美式看跌期权和以高价为敲定价格的美式看涨期权都要贵.其自由边界介于美式标准期权与美式交叉期权的自由边界之间.     

2个数学模型下的铜期权定价比较

将估计的参数代入Black-Scholes模型和Merton跳-扩散模型,计算铜期权的认购期权合约在到期日之前的理论价格.对比2个模型的铜期权理论价格与实际期权价格发现,Merton跳-扩散模型的定价效果比Black-Scholes模型的更优,且在定价过程中Merton跳-扩散模型更稳定.     

跳跃-扩散过程下欧式任选期权的定价

假定市场股价满足跳跃扩散模型,应用测度变换法给出了欧式任选期权的一般均衡价格公式,并提供了两种数值方法:Newton-Raphson迭代和Monte-Carlo模拟法来计算该类期权的价格,分析了模型中一些参数对期权价格的影响.     

次分数跳-扩散模型下的复合期权定价

复合期权是一种重要的奇异期权。在现有期权定价模型中，标的资产价格通常以几何布朗运动作为驱动源，且大多遵循连续随机过程。然而，标的资产价格并非始终都是连续的，可能会发生跳跃且可能具有长程相关性。本文基于风险中性测度假设，探究了在欧式看涨期权情形下，次分数跳-扩散模型的复合期权定价问题。运用伊藤公式和对冲技术得到该模型下满足的偏微分方程，并运用泊松跳跃和累计概率分布函数理论进一步给出了复合期权价格的表达公式。通过数值模拟探究了多个参数对期权价格的影响，并与几个常用模型的期权价格进行了比较。     

随机波动率下永久美式障碍期权的渐近式

研究波动率服从快速均值回复Ornstein-Unlenbeck(O-U)过程的永久美式障碍期权的定价问题.考虑永久美式向下敲出看涨期权,该期权的定价问题可归结于求解自由边界问题.使用扰动法,把期权价格以及最优执行价格按均值回复时间长度的幂进行展开,通过求解Poisson方程组,得到期权和最优执行价格的渐近公式.     

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     

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