∫a^bf（x）dx=∫a^bf（a＋b—x）dx的应用初探

本文从两个方面对等式∫a^b(x)dx=∫a^bf(a b-x)dx的应用做了一些初步探讨，这两方面分别为：运用这个等式证明一些积分等式，以及证明一些不易求解的三角函数积分。     

非绝对积分与绝对积分的关系

说明了Newton积分与Henstoek积分为非绝对积分，Riemann积分与Laebesgue积分为绝对积分，讨论了这几种积分之间的关系，证明了Henstoek积分是这几种积分的统一形式，同时证明了R([a．b])是不完备空间，H([a，b])是完备空间。     

关于非奇异边界积分方法

本文用把源点移到所研究问题区域以外的边界积分方法——非奇异边界积分法进行数值积分。这种方法克服了通常边界元法中的奇异数值积分的困难;同时对于边界法线不连续的角点也不须作特殊处理。最后计算结果表明:本文所提出的非奇异边界积分的计算结果与经过特殊处理的奇异积分的计算结果具有同样的精度。     

无穷积分与瑕积分的一个关系（二）

以反函数为工具，对无穷积分与瑕积分的关系进行研究，在文献[1]的基础上得到了定量结果：∫a ∞ f(x)dx=∫o f(a) f^-1(x)dx-af(a).     

关于元素法应用的一点探索

本探讨了元素法在解决重积分化累次积分，对弧长的曲线积分化为定积分及对面积的曲面积分化为二重积分的应用。     

用含参变量积分解决积分计算的数学模式

含参变量积分是一类比较特殊的积分，由于它是函数但又是以积分形式给出的，所以它在积分计算中起着桥梁作用，本文主要总结解决积分计算的数学模式。     

一个单变量积分公式在重积分上的移植及其应用

将一个单变量积分公式移植到二、三重积分上,然后再利用这些公式证明积分学中的一系列计算公式.     

导数的一个新定义及其应用（续1）

本文假设ｆ（ｘ）在Ｕ（ｘ０）内有界的条件下，给出导数的新定义，并证明了它的合理性。     

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     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

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

正~~