键参数拓扑指数和硫酸盐热分解温度的计算

从健参数拓扑指数一般形式出发，导出计算硫酸盐键参数拓扑指数公式，用于关联硫酸盐热分解温度的计算，结果满意。     

电负性指数mD及对无机氢化物pKa1值的预测

受Randic分子连接性拓扑指数^mX的启发，构建了一种新的分子连接性拓扑指数^mD用^mD的0，1阶指数^0D,^2D与P区无机氢化物的pKa1值关联，拟合成2个线性方程，英相关系数与相关指数分别为0．9953和0．9955，拓扑指数的结构选择性满足唯一性表征，预测取得了较好的结果。     

有机物标准吸附自由能的拓扑化学研究

根据分子拓扑理论，提出了一个新的结构信息拓扑指数ＹＭ，并探讨了有机物在金属铋电极上的标准吸附自由能－△Ｇａ（２９８Ｋ）与其新拓扑指数ＹＭ和一阶分子连接性指数Ｘ１之间的定量关系。     

无机氢化物HxA的酸性与分子拓扑指数的关系

根据分子中成键原子i的结构特征和所处的化学环境，构建了相似性分子价连接性拓扑指数TA和差异性分子价连接性拓扑指数^mSn，研究了两种新的分子连接性拓扑指数与P区无机氢化物的pKα1值相关性，相关系数均大于0．9980．新模型物理意义明确，计算简便，新的拓扑指数对于无机——P区氢化物的结构选择性呈现唯一性表征，而且与其酸性强度具有高度相关性，预测值与实验值高度吻合．     

金属离子与EDTA配位稳定性的拓扑指数法研究

根据元素键参数拓扑指数，并计算了５４ 种金属离子的拓扑指数，用于关联金属离子与ＥＤＴＡ配位稳定常数研究，得到了较好的线性相关性。     

低沸点烷烃Kovats指数的拓扑结构研究

本文应用拓扑指数法研究烷烃化合物的色谱保留指数，并通过多元回归分析得到了烷烃的拓扑结构与色谱保留指数的良好的相关性，当测得某一有机物的保留指数时便可估计其结构特征，从而为烷烃化合物的色谱定性分析提供了可靠的信息。     

一个新的拓扑指数预测烃类化合物临界参数

通过对分子图的顶点和边着色得到染色分子图，并以相对键长和点价δi分别代替拓扑距离及顶点度，结合邻接矩阵和距离矩阵提出了一个用于表征含多重键。杂原子化合物的拓扑指数Xu。研究了该拓扑指数与烷烃、烯烃，炔烃和芳烃临界参数的相关性，结果表明Xu指数与上述化合物理化性质均具有良好的相关性，肯定了本方法的合理性和有效性。     

一个新的拓扑指数用于饱和9烷烃的QSPR研究

在分子图的邻接矩阵和距离矩阵的基础上提出了一个新的拓扑指数Sv，该拓扑指数与饱和烷烃的正常沸点具有较好的性质相关性，具易于计算，并且对饱烷烃有较好的结构区能力。     

定量结构-性质关系(QSPR)研究 --利用新的分子拓扑指数预测烯烃热力学函数

基于分子键距矩阵和键联矩阵提出一种新的分子拓扑指数γ，计算43种烯烃的γ值并与其热力学函数及沸点相关联，结果表明，该拓扑指数具有很好的性质相关性和结构选择性。     

用拓扑指数Si研究碳氢化合物的沸点（Ⅲ）

定义了拓扑指数Ｓｉ，并选取包含双，三键，环及苯环的碳氢化合物为研究对象，计算了这些化合物的拓扑指数Ｓｉ，同时用Ｓｉ相关了它们的沸点。结果较献值有所改善，并从Ｓｉ中筛选出Ｓ４。     

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~~