耦合拟不动点定理

根据耦合拟不动点和上半连续算子的定义，讨论了在一定连续条件下集值混合单调算子的耦合拟不动点存在性问题，证明了，若A是非空弱闭值上半连续增算子，则A存在不动点以及若A是非空弱闭值上半连续混合单调算子，则A存在偶合拟不动点等结论．     

α-压缩混合单调算子的耦合不动点存在性定理

结合非紧性测度给出了一类α－压缩混合单调算子的耦合不动点存在性定理，这里没有假定算子的连续性与锥的正规性。     

带积分边界条件的三阶微分方程凸单调正解的存在唯一性

研究了带积分边界条件的三阶边值问题凸单调正解的存在唯一性,证明利用了和算子的不动点定理以及混合单调算子中的不动点定理,获得了所研究问题凸单调正解存在唯一的充分条件,并且建立了迭代格式来逼近这个唯一正解.     

一类非线性算子的耦合不动点

研究了较混合单调算子更为广泛一类非线性算子的耦合不动点的存在性及迭代求法，给出的结果推广，包含了几个关于混合单调算子耦合不动点的已民结果，应用它们讨论了常微分方程初值问题的广义耦合拟解的存在条件及迭代求法。     

关于保序集值算子的讨论

讨论了半序集和半序拓扑空间中保序集值算子的最小与最大不动点的存在性．在半序集上，给出了类似于中关于序Banach空间中混合单调算子的耦合拟不动点的结果；在半序拓扑空间中，改造了中相关定理中关于算子的条件，得到算子存在最小与最大不动点。     

关于集值算子的单调性及其不动点

引入了集值算子的几种混合单调性定义，讨论了各种单调性之间的关系，然后利用半序集上的全序子集的某些性质，给出了混合单调集值算子的耦合不动点和极小极大耦合不动点的存在性定理．     

两个非单调二元算子的公共不动点定理

利用锥与半序理论和混合单调算子理论,讨论了半序Banach空间中两个非单调二元算子的公共不动点的存在性和唯一性,并给出了迭代序列收敛于公共不动点的误差估计,所得结果是某些已知结果本质改进和推广．     

一类混合单调算子的不动点定理

利用锥理论和单调迭代方法，讨论了既没有连续性条件也没有紧性条件、只满足某些序条件的非单调算子方程解的存在唯一性及迭代收敛性，得出了有关混合单调算子、增算子和减算子的新的不动点定理，并给出了此迭代的误差估计，所得结果是某些已知结果的本质改进和推广．     

一类混合单调算子的不动点定理及应用

文章分别利用半序方法和叼．列压缩方法，讨论了一类具有凹性及α凹-Guo凸性的混合单调算子，给出了其不动点存在唯一定理，还讨论了它们在积分方程中的应用。     

一类非线性算子的耦合不动点

研究了较混合单调算子更为广泛的一类非线性算子的耦合不动点的存在性及迭代求法．给出的结果推广、包含了几个关于混合单调算子耦合不动点的已有结果．应用它们讨论了常微分方程初值问题的广义耦合拟解的存在条件及迭代求法     

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.     

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