基于均匀分布的多维Bertrand博弈模型及均衡分析

在分析多维Bertrand博弈模型研究成果的基础上,进一步讨论了两个企业关于具有一定替代性的两种产品,在均匀分布下的不完全信息Bertrand多维博弈模型及其贝叶斯纳什均衡.利用数值算例进行分析,结果表明两个企业分别对每种产品单独博弈时的均衡结果劣于几种产品联合博弈的均衡结果.     

非对称信息条件下鹰鸽模型的量子博弈研究

本文利用量子博弈的相关理论建立了非对称信息条件下的鹰鸽量子博弈模型,求出了不同纠缠度值时的量子纳什均衡策略,并与经典博弈均衡策略比较得出:在经典博弈条件下得出与冲突成本相关的多重均衡策略,在量子博弈理论下得到与冲突成本无关的纠缠度为π/2时的唯一纳什均衡,而经典博弈论条件下的纳什均衡策略是量子均衡策略在纠缠度取零值的一种特殊情况,从而推广了鹰鸽博弈的纳什均衡策略解,也大大简化了运算.     

小生境粒子群优化ABC支持型QoS组播路由机制

针对ABC总最佳链接支持型QoS(服务质量)组播路由存在的链路参数不精确、用户QoS参数难以描述以及用户与网络运营商效用相矛盾等关键问题,提出了一种基于用户和运营商博弈的多目标模型,采用模糊数学的方法对链路参数和用户的QoS需求进行处理,利用用户和运营商在每条链路上效用的博弈达到纳什均衡下的Pareto最优,保证了用户和运营商的公平性.为有效求解该多约束QoS组播路由模型,提出一种基于动态Pareto解聚类分析的小生境粒子群的多目标算法.该算法采用聚类小生境保证解的多样性,引入动态更新Pareto最优边界加速寻得优质解过程.最后,基于NS2平台对路由机制及算法进行了仿真实现与性能指标评价.实验结果表明:该路由算法在可信度、用户效用、网络运营商效用等方面具有突出的优势,验证了其有效性与可行性.     

灰色博弈网决策模型研究

针对超博弈决策问题中存在的"灰色"的"贫信息"问题,提出一种基于信息缺失下的灰色博弈网模型;并给出了灰色博弈网的建模思路及其纳什均衡求解算法,解决了博弈网决策模型中的灰色不确定性问题。通过宏观信念建模,生成全局灰场景和优化典型灰场景。通过微观信念均衡建模,利用可能度分析和粒子群算法求解纳什均衡。最后实例仿真,验证了该灰色博弈网模型的可行性和有效性,真实性好,有较高的应用研究价值。     

高密度D2D用户的潜在博弈资源分配算法

为解决高密度用户场景中多个设备到设备(D2D)用户复用同一个蜂窝用户资源时相互竞争的问题,提出了一种基于博弈论的D2D资源分配算法.首先构造基于最小化系统整体干扰的非合作博弈效用函数,同时考虑了系统中D2D用户之间的干扰以及D2D用户与蜂窝用户之间的干扰;继而设计该博弈的潜在函数,并证明该博弈过程是一个潜在博弈模型,进而证明了其纳什均衡的存在性.仿真结果表明,该算法相比现有方法具有更好的公平性和收敛性,能使用户获得更好的吞吐量,降低D2D用户受到的干扰.     

基于博弈理论的认知无线电频谱分配

在认知用户效用函数的基础上,应用寡头市场博弈模型来解决频谱分配中的授权用户博弈问题.根据认知用户的效用函数以及Bertrand、Cournot均衡理论提出了授权用户信道竞价的动态Bertrand博弈算法.理论与仿真结果表明:稳定的纳什均衡解与速率调整参数有关,当速率调整参数小于0.020时,可以在较短的时间内获得稳定的信道价格;同时,纳什均衡点与边际成本有关,较高的边际成本可以获得较高的信道价格.     

竞争环境下不同顾客选择行为的可替代产品动态定价

提出了考虑不同顾客选择行为的两个销售商销售可替代产品动态定价博弈模型,模型中将潜在顾客分为3种类型:到达立即从销售商1购买产品的销售商1的忠诚顾客,到达立即从销售商2购买产品的销售商2的忠诚顾客,以及没有销售商选择偏好依据MNL模型以一定概率购买销售商1或2产品的一般顾客. 研究结果证明了纳什均衡价格的存在性,并应用数值算例讨论了多周期纳什均衡价格的性质.      

移动边缘计算中基于非合作博弈的计算卸载策略研究

针对多用户、多任务的复杂场景,建立一种基于非合作博弈和排队论的计算卸载博弈模型。以计算任务的平均响应时间和平均能耗作为性能指标,提出一种非合作博弈的纳什均衡卸载策略和成本函数,设计一个迭代算法来求解系统的纳什均衡。理论证明了该博弈模型的纳什均衡存在且具有唯一性。数值仿真结果表明,基于非合作博弈的纳什均衡卸载策略可以显著降低移动设备的开销,提升系统性能,更好地满足用户需求。     

诱导信息下基于博弈论的路径选择模型

诱导信息下的路径选择模型无论是在宏观的交通规划领域,还是在微观的驾驶员行为机理研究过程中都具有重要的意义.通过分析出行者选择路径的过程,将博弈论中的静态多人博弈与路径诱导下的出行者的决策过程进行对比,引入求解纳什均衡的划线法,来阐述出行者的路径选择模型,以求得到最接近实际的出行者在静态诱导信息下的路径选择模型;给出了基于博弈论的路径选择模型算法,并通过1个简单实例阐述了在静态诱导信息下出行者的博弈过程以及求解纳什均衡的方法.     

企业动态竞争战略选择的微分博弈分析

基于微分博弈理论,研究了企业如何进行动态竞争战略的制定.首先建立了对称信息条件下的双寡头企业竞争战略选择的微分博弈模型,然后通过对模型的求解和纳什均衡的讨论,分析了两家企业在博弈均衡状态下的战略选择,并把这一研究结果用来指导我国制造企业动态竞争战略制定的实践,最后对模型的进一步完善提出了一些设想.     

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

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