电力市场环境下古诺模型与经济调度模型的比较

为了解决电力市场运营环境下的个体利益与整体利益冲突问题,将古诺模型与经济调度模型进行比较,分析了基于古诺模型的经济调度,给出了简捷的古诺均衡方法.比较结果表明:古诺模型既可以充分满足电力市场竞争环境下的电厂追求利润最大化的要求,又可以协调各电厂间的利益分配关系,是一种可以用于多种市场条件下的均衡模型.     

广义古诺模型的一种求解方法

古诺模型是博弈论中的一个经典模型，对它有不同的求解方法，本文推广了古诺模型并详细讨论了广义古诺模型的经济含义以及重复剔除严格劣势战略求解法。     

低弹性需求下的古诺模型动态学

研究是否所有双寡头博弈都存在纳什-古诺均衡问题,采用动力系统方法,构造低价格弹性需求函数,并建立此需求函数下的动态双寡头古诺模型,并将双寡头模型扩展至多寡头模型.结果表明:寡头博弈是否存在纳什-古诺均衡是由供给方的厂商数量和需求方的价格弹性共同决定的.该成果对古诺模型的稳定性和均衡解问题给出更一般的解释,说明中国的房屋价格持续上涨的原因不是需求低价格弹性.     

多寡头不同成本古诺模型的纳什均衡分析

将古诺的双寡头垄断模型推广到多个寡头垄断的情形,分析了多寡头古诺博弈的纳什均衡,用最优化和初等变换等数学方法得到了纳什均衡解.在此基础上,将古诺的双寡头垄断模型中相同的边际成本推广到不同的边际成本,讨论了不同成本的双寡头古诺博弈的纳什均衡,得到其纳什均衡解.     

多个生产商条件下的动态古诺模型分析

研究任意多个厂商条件下的一般动态古诺模型，把两个厂商条件下的古诺模型拓广到一般情形，并进行动态分析．给出了一般动态古诺模型的数学表达式，并从理论上证明了均衡解的存在性．进一步地，通过理论分析和计算，给出了各厂商的均衡产量的计算公式．     

古诺线性模型与中国房地产

古诺模型是寡头竞争模型,是由来已久的经济学中非合作博弈的经典范例.研究古诺模型的文献很多.本文主要讨论n人古诺线性模型.在一定的假设下,该模型有唯一的占诺-纳什均衡;通过分析该模型中价格对商品量的变化率及其厂商数n变动的情况,得出了一些理论和实际相一致的结论;特别指出了模型中的参数p0和k有重要的意义.根据实际数据和经验并对照模型中的结果提出:近几年中国商品房价格的逐年攀升主要是垄断造成的.建议政府对房地产这种寡头垄断行业采取有力的监管措施.     

需求价格弹性为常数下的古诺模型特征分析

在需求价格弹性为常数下对非线性条件下的古诺模型进行探讨.从寡头垄断市场中各厂商的价格-边际成本加价率相同和不同两个方面对寡头垄断的竞争实质进行分析,获得了有关古诺模型均衡解的若干相关因素的几个性质.     

地方高校学费与补贴的战略决定模型

类比古诺关税模型,构造反映地方政府及其所辖高校博弈行为的数学模型,研究高校学费与补贴的战略决定及其效果评价.     

寡头厂商博弈模型

在给定同质产品的市场需求函数条件下，对于由若干个厂商构成的寡头市场里，研究分别包括不同数目厂商所组成的两大竞争团体之间的产量决策博弈问题。在假定各个团体内部厂商具有产量决策的一致性后，提出用各自构成的代表厂商之问的产量竞争替代团体竞争的思路，分别讨论2团体真正合作形成完全垄断、团体假合作博弈、团体古诺博弈、团体斯坦克尔伯格博弈4种情形的博弈模型，得到古诺博弈为纳什均衡、囚徒困境、先动优势等结果的存在条件，并分别比较了古诺、斯坦克尔伯格和真合作博弈结果以及古诺、假合作和真合作博弈结果，推广了现有研究的相关结论。     

古诺寡头市场分销商线性激励机制

在古诺双头市场上,对制造商如何引入对下游分销商的激励机制,建立自己的供应链进而获取竞争优势的问题进行了分析。建立了供应链与制造商、供应链与供应链的古诺竞争及供应链激励博弈模型,求得了单边激励和双边激励2种情况下,供应链核心企业——制造商的最优激励策略,并讨论了激励机制对其收益和市场份额的影响。     

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