国际贸易中的最小质量标准研究

提出最小质量标准(MQS)作为贸易技术壁垒(TBT)来考虑，因为贸易技术壁垒的实质就是设定一个高于进口产品质量的标准，以阻碍进入．在此前提下，根据当前企业所遭遇的贸易技术壁垒的实际情况，考虑了在一个开放的经济体中，在两个国家生产技术非对称的情况下．技术的非对称对于企业利润的影响以及国内外企业的利润及社会福利随MQS的变化情况．研究结果表明．当政府设定MQS，国外企业的利润增加，本国企业的利润减少，但消费者剩余增加，且消费者剩余的增加幅度要大于本国企业利润的减少，故社会福利增加．因此，政府有动机设定MQS．     

产品兼容性和企业的合作与竞争

目的研究企业之间产品兼容策略方面的合作与竞争关系.方法利用用户的网络外部性和产品的兼容性,用博弈论的分析方法进行研究.结果与结论当存在正的网络外部性时,规模较小的企业通过采用兼容性策略,可以提高其均衡产量,实现较大的利润.竞争对手具有相同的生产规模和竞争实力时,双方都能通过生产相互兼容的产品而获得较大的利润.企业之间在产品兼容性方面的合作能提高企业的利益,但竞争依然存在.     

反共振方法及其应用

建立了两自由度系统的振动方程及模态响应，利用计算机绘图作出了固有频率ω^2和振幅比γ随参数α和卢的变化曲线；通过具体算例对反共振现象进行分析，所得结论为除低频ω^2在α等于1时与参数β无关外，其它ω^2随参α的增加而减小，随参数卢的增加而增加．振幅比γ随参数α的增加而增加，随β的增加而减小．在工程实际中，常利用反共振现象来达到吸振的目的．     

半连续Ag膜的分形结构与光学性质

用真空蒸镀法在ＫＢｒ晶体上制备半连续Ａｇ膜，膜的复盖率由０．３至０．８．由电镜观察膜的形貌随复盖率ｐ的变化：当ｐ很小或很大时为均匀膜；当ｐ接近临界阈值ｐｃ时为不均匀膜．测定了膜的形貌参数随ｐ的变化．及试样在２．５～１２．５μｍ波段的透射光谱．当ｐ＜ｐｃ时，透射率随波长增加而增大；当ｐ＞ｐｃ时，透射率则随波长增加而下降．当ｐｐｃ时，透射率与波长无关，即出现光学逾渗效应．最后，讨论了沉积与凝聚对膜几何参数的影响     

金属钼催化C60和苯乙炔共聚物合成及光限幅性能的研究

合成表征了Ｃ６０和苯乙炔共聚物。详细地测试了聚合物溶液的光限幅性能。研究结果表明随溶液浓度增加。聚合物光限幅性能增加，聚合物溶液透射率为６３％时，在低人射激光光强时，航向光强度随人射光强度增加而增加；当入射光强度达４．６Ｊ／ｃｍ＾２透射光强开始偏离线性，随着入射光强进上步增加，透射光强逐渐达到一个饱和值，当入射光强为７．４Ｊ／ｃｍ＾２时，透射光强度几科不再随入射光强度增大而增加，接近一个阈值（０．     

介质阻挡放电过程中相关参量的变化

在大气压、氮气条件下，对DBD相关放电参量随激励电压和激励频率的变化情况以及结构因素对DBD放电参量的影响作了实验研究．结果表明：当放电只发生在间隙局部时，电介质层等效电容、间隙等效电容和等效电场强度在不同频率时在数值上相差很大；当放电充满整个间隙时，各等效放电参量在相同激励频率下基本保持在一定值附近．能量密度随激励电压的增加而线性增加，随频率的增大而增大．各放电参量与电介质层放置的位置无关，与放电间隙宽度的变化密切相关．     

考虑主播营销努力的直播电商供应链网络均衡

为协助直播电商通过主播营销努力提升产品市场占有率，构建了直播电商供应链网络均衡模型，通过不同营销努力水平对电商供应链均衡策略及整体利润的影响，探究最优主播营销努力水平。研究结果表明，主播营销努力会吸引更多消费者，拉动产品销售，促使电商供应链各节点企业获得更多利益；适当增加主播营销努力水平，会增加产品销量和各节点企业利润；当增大主播营销努力成本系数，直播电商利润会随着主播营销努力水平的提高出现下降趋势。     

水平管气液两相泡状流入口段流速场的实验研究

用热膜测速技术对水平管气液两相泡状流入口段中的液流速度及局部含气率分布进行了研究．实验时液流折算速度为3．5～4．0m／s，气流折算速度为0～0．44m／s．结果表明，在入口段中液流速度随液流折算速度的增加而增加，随气流折算速度的增加而分布更不均匀．含气率随气流折算速度的增加而增加，随液流折算速度增加分布趋于均匀．在本实验范围内，当实验测试段长度与管径比L／D大于109后，液流速度和局部含气率的分布随L／D的变化已不很明显，可认为达到充分发展区域．     

商业银行竞争对小企业信贷可获性的影响

将企业转换贷款银行成本的增加作为衡量商业银行竞争程度提高的指标,考虑企业投资项目收益、企业项目成功概率、企业垫付资金成本及银行对于不同规模的企业所设置的差别利率对小企业信贷可获性的影响,构建商业银行竞争影响小企业信贷可获性的分析模型,探讨商业银行竞争程度提高是否有利于小企业信贷可获性增加.研究结果表明,随着商业银行竞争程度提高,银行贷款项目的风险水平上升,贷款客户中的小企业比例下降,竞争加剧不利于小企业信贷可获性增加.最后以我国2009年信贷激增为例进行了案例分析,验证了所提模型的有效性.     

对风险资产相关性自信定价下的内部交易Nash均衡

研究一类做市商对两种风险资产相关性有一定自信程度下的内部交易古诺博弈特征,得到了线性内部交易策略与定价的Nash均衡的存在性。发现市场处于均衡时做市商的自信度与内部交易利润有如下关系:若两个风险资产是相互独立,则自信度不影响利润;若两个风险资产线性相关,利润随自信度增大而减小;若两个风险资产既不独立也不线性相关时,则存在自信度的一个阀值,使得利润达到最小,且当自信度低于阀值时,利润随自信程度增大而减小,但当自信度高于阀值时,利润反而随自信度增大而增大。     

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