我国市场结构中的技术垄断分析

市场结构是决定产业组织竞争性质和垄断程度的基本因素,寡头垄断是市场结构在现实生活中的常见的表现形式。知识经济时代由技术垄断强化的寡头垄断形式在我国也日益明显,但占据寡头地位、获取垄断利润的却是在华投资的跨国公司。我国企业必须通过自主研发和积极吸收技术外溢等方法力争成为技术垄断者。     

寡头市场结构提升我国医药零售业产业组织效率机理研究

针对我国医药零售业目前产业组织效率低下的现状,作为一种极具效率的市场结构,寡头垄断结构的形成有利于我国医药零售业实现规模经济效应、技术创新效应。提升我国医药零售业的产业组织效率的政策建议有：制定以提高市场集中度为导向的产业组织政策,建立医药联盟、采购联盟等方式提高行业市场集中度,尽快促成医药零售寡头市场结构的形成。     

运用博弈论探讨投资者进入电力市场的策略问题

根据我国现阶段电力市场改革的特点，指出了我国现阶段电力市场为寡头垄断的电力市场，并研究了在寡头垄断的电力市场环境下，一个潜在的火电厂投资者与现有发电商之间的策略互动行为，运用博弈论分析了投资者所面临的策略选择问题，并通过算例进行验证。     

寡头垄断企业R&D博弈模式及其政策选择的思想演变与前沿倾向

目的 描述并分析国内外对于寡头垄断产业R＆D活动中,政府与寡头企业及寡头企业之间R＆D博弈过程（包括演化博弈）中的理性策略和典型模式的思想演变和基本问题.方法 文献检索法、分类法及归纳法.结果与结论 目前寡头垄断企业R＆D博弈模式及其政策选择相关选题和研究具有的潜在的理论与应用价值.     

不同市场结构下新平台产品发布策略研究

为了提高平台企业的市场绩效,讨论了两种市场结构下的新平台产品正式发布策略(F发布策略)和非正式发布策略(I发布策略)问题。分别构建了垄断和寡头竞争的平台企业竞争模型,通过比较分析发现:首先,在垄断情形下,无论平台企业采取何种策略,平台企业利润均随交叉网络外部性强度的增大而增加;此时F发布策略为垄断平台企业的优势策略。其次,在寡头竞争情形下,无论两平台企业分别采取何种策略,平台企业利润均随新平台产品服务水平的提升而增加;此时I发布策略为寡头平台企业的优势策略。     

基于价格合作的寡头垄断企业供应链产品定价

建立了2阶段单链供应链模型,供应链节点双方均为寡头垄断企业.讨论了供应商与制造商在价格合作和非价格合作下的中间产品定价和最终产品的定价,比较了2种情况下供应链的总体利润差别.指出价格合作下利润增加的幅度不仅与最终产品市场的需求弹性正相关,并且与供应商的成本正相关,与供应商面临的市场价格需求弹性负相关.由于整条供应链的超额利润并不代表个体的超额利润,因此对超额利润进行了讨论,指出了价格合作下寡头垄断企业所组成供应链的稳定条件.     

多目标决策设计的博弈求解方法

提出多目标决策设计的博弈求解方法,给出多目标问题的博弈描述,通过计算影响因子和模糊聚类,将设计变量集合分解为各博弈方拥有的策略空间.分别采用Nash均衡模型、Stackelberg寡头模型和共谋合作模型求解多目标决策设计问题,并给出相应的技术步骤.对一数值算例和补偿滑轮组变幅机构进行了多目标博弈求解,计算结果证明了博弈求解方法的有效性和可靠性.     

浅论商战中的博弈论

两个企业合起来垄断或几乎垄断了某种商品市场，在经济学上我们把这种情形称为双寡头经济。双寡头经济是寡头经济的一种形态，寡头可以有好几个企业，双寡头只限于两个企业。现实中，两个企业都想打垮对手，由此争取更大的利润。可口可乐公司和百事公司几乎垄断了美国的碳酸饮料市场，他们之间的争斗可以说就是这种寡头经济的一个极好的例子．     

基于库诺特模型的天然气管道一体化研究

天然气管道属于自然垄断实体,单一气源、单一管道的分散管道格局,不利于天然气全国范围内的统一调配,不利于发挥天然气管道的规模经济.据此,借助库诺特模型构建中国天然气市场寡头竞争模型,并在这一模型的框架下考察天然气管道一体化如何改变我国天然气产业链上游寡头竞争市场的竞争均衡.结果表明,天然气管道一体化有利于降低我国天然气整个行业的管输成本,有利于我国天然气上游企业扩大产量、提高利润,有利于增加消费者剩余.     

寡头垄断市场中企业兼并的一般均衡分析

提出了一种生产者具有超额垄断利润的一般均衡模型,并将该模型扩展到寡头垄断市场,考虑寡头生产者按古诺模型进行博弈论的情况下,产品市场、劳动力市场和资本市场的全局均衡,在该模型框架下,分析了企业兼并的福利效果,指出由企业兼并引起的全部产品产量的变化所导致的消费者效用变化是社会福利分析的基础,该模型提供了一种比局部均衡分析更具有全面性的分析方法。     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

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