一类广义非线性边值系统的可解性

基于广义系统的等价分解形式，利用由正常边值系统的Green函数及压缩映射原理所得的结果，研究了一类广义非线性边值系统，给出了此系统的相容边界条件的集合表示，以及在相容的边界条件下，广义非线性边值系统的可解性，最后给出了一个例子加以说明。     

一类三阶三点方程组的正解存在性

利用范数形式的锥拉伸与锥压缩不动点定理研究了一类含p Laplacian算子的三阶三点非线性边值方程组的正解存在性,得到了新的结果.     

Banach空间中二阶非线性脉冲积分-微分方程的周期边值问题的解

给出了抽象空间中非线性脉冲形式的二阶脉冲积分-微分方程的周期边值在某一序区间上的最小解与最大解的存在性定理.     

非线性抛物积分微分方程的变网格有限元方法

研究了一类非线性抛物积分微分方程在Ｄｉｒｉｃｈｌｅｔ边值和非线性边值情形下的变网格全离散有限元方法及其误差估计．提出了一种对任意变动网格的计算格式，并证明了该格式在某种意义下具有最佳的误差阶估计．     

非线性抛物积分微分方程的变网格有限元方法

研究了一类非线性抛物积分微分方程在Ｄｉｒｉｃｈｌｅｔ边值和非线性边值情形下的变网格全离散有限元方法及其误差估计，提出了一种对任意变动网格的计算格式，并证明了该格式在某种意义下具有最佳的误差阶估计。     

一类非线性Schròdinger方程的初边值问题

本文讨论一类非线性Ｓｃｈｒｏｄｉｎｇｅｒ方程具非线性边值条件（含Ｒｏｂｉｎ边值条件）的初边值问题，给出了解在有限时间内的增长估计及解的爆破性质。     

具非线性边值条件的发展型p-Laplace方程解在有限时刻的爆破性和有界性

讨论具非线性边值条件的发展型p-Laplace方程解 的爆破性和有界性. 给出了一维情形下的比较原理; 通过构造特殊形式的上下解找到一维情 形下解在有限时刻爆破和有界的条件, 并研究了高维情形的径向解在有限时刻爆破或有界的 结果; 文中例子表明所得结果是非平凡的.     

非线性中立型抛物微分方程组解的振动性

研究了非线性中立型抛物方程组解的振动性,获得了齐次DIRICHLET,NEUMANN和ROBIN边值条件下,所有解振动的充分条件.     

一类积分边值问题解的存在性与唯一性

利用Schauder不动点定理和上下解方法,研究了一般二阶非线性常微分方程满足一类积分边值条件的解的存在性和唯一性.     

非线性三阶复合型方程解的Blow-up——非线性边值情形

本文讨论一类具非线性边值、三阶非线性复合型方程的初边值问题,采用凸性函数法研究了它的古典解在有限时间内发生Blow-up印的条件。     

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     

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