黎斯关系下的粗糙下囿性质

在黎斯等价关系下，讨论了半群中子集的逼近问题，特别地，得到了囿集的粗糙下囿性质。     

二级囿变函数与二级Stieltjes积分

本对二级囿变函数与二级Ｓｔｉｅｌｔｊｅｓ积分做了进一步的讨论，给出一函数是二级囿变函数的充要条件及一函数对另一二级囿变函数二级Ｓｔｉｅｌｔｊｅｓ可积的充分条件。     

逆半群在给定群上的E—囿盖

通过反例证明了并非对任意群G，逆半群S在它上都有E-囿盖，给出了逆半群S在群G上有E-囿盖的充分必要条件。     

Hayman不等式的推广（Ⅱ）

结出一个界囿定理，用亚纯函数ｆ的零点密指量和ｆ的微分多项式的１－值点密指量界囿其Ｎｅｖａｎｌｉｎｎａ特征函数，推广了ＨａｙｍａｎＬａｎｇｌｅｙ等的结果．     

强、弱囿变函数的几个判定定理

文[1-3]对取值于空间的抽象函数进行了若干讨论，得到了强、弱囿变函数的几个充要条件，本文继续对此进行了一些研究，又得到了不同于文[1-3]关于强、弱囿变函数的几个判定定理。     

取值于Banach空间中的（E1）囿变函数

引入取值Ｂａｎａｃｈ空间中的（Ｅ１）囿变函数的概念，并讨论它与强、弱囿变函数之间的关系．     

K囿∑自动机

本文是“补救S.Eilenberg的极限定理”和“The Limtied RegularLanguages(囿正则语言)”的续篇.本文讨论了囿正则语言的识别器——K囿∑自动机的性质,建立了识别定理,引入语言矩阵的交运算来刻画自动机直积,讨论了囿自动机的确定化等问题.     

浅谈新课改背景下的计算机专业课程教学

本文就如何优化计算机教学进行了初步探讨，提出了创设良好的教学氛囿，激发学生的学习兴趣，调动学生的学习积极性，着重培养学生的实践能力和自主创新能力。     

中国古代绘画透视散论

中国古代绘画有着明确的形体和空间，具有不同于自然透视的主观透视性，无分体现了古代画家尊重自然，又不为自然所囿的绘画风格。     

关于n级抽象囿变,绝对连续函数（Ⅰ）

本文给出了取值于Banach空间的n级囿变函数及n级绝对连续函数的定义,其中也包括强、弱n级囿变函数、绝对连续函数。并且讨论了它们之间的一些基本性质及关系。     

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

正~~     

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