冠图C^＋nn的K—优美性

当ｎ（ｎ≥４）为偶数时，冠图Ｃ＾＋ｎｎ的Ｋ－－优美性被证实。     

矩阵字符串的几个等式问题

研究了矩阵Ａ,Ｂ∈Ｃ＾ｎ×ｎ的迹等式,ｔｒ（ＡＢ）＾ｍ＝ｔｒ（ＡＡ）＾ｍ２（ＢＢ）＾ｍ２）（ｍ≥２为自然数）的充要条件,同时给出了２个矩阵,Ａ,Ｂ∈Ｃ＾ｎ×ｎ的字符串Ｗ（Ａ,Ｂ,Ａ＾＊,Ｂ＾＊）的与正规矩阵有关的几个性质。     

6种药用植物的染色体研究

对山东４科６种药用植物进行了染色体数目和核型研究，结果表明，毛曼陀曼Ｋ（２ｎ）＝２４＝２４ｍ，“１Ａ”核型；紫花曼陀罗，Ｋ（２ｎ）＝２４＝１４ｍ＋１０ｓｍ“２Ｂ”牛龙牛儿苗，Ｋ（２ｎ）＝１４＝１２ｍ＋２ｓｍ“１Ａ”核型，鸡眼草，Ｋ（２ｎ）＝２２＝１４ｍ＋８ｓｍ，“２Ａ”核型，委陵菜，Ｋ（２ｎ）＝１４＝１４ｍ，“１Ａ”核型；地榆，Ｋ（２ｎ）＝５４＝５４ｍ，“１Ｂ”核型，其中４种为首次报道。     

介子与核碰撞的B—E关联及其方向性

本文研究了２５０Ｇｅｖ／ｃ下π＾＋（Ｋ＋）同质子，核碰撞的Ｂｏｓｅ－Ｅｉｎｓｔｅｉｎ关联，用Ｑ＾－ｖＫｙ（Ｑ）分布拟合实验数据得出：当靶粒子为ｐ时，ｒ０＝２．１ｆｍ；发靶为Ａｌ核时，ｒ０＝３．５ｆｍ；当靶为Ａｕ核时，ｒ０＝４．１ｆｍ。     

K—TSP问题的近似算法

利用△ＴＳＰ问题的Ｃｈｒｉｓｔｏｆｉｄｅｓ算法及其在Ｋ－ＴＳＰ问题上的扩展，通过权函数变换ｃｉｊ＝ｃｉｊ－ｕｉ－ｖｊ使ｃｉｊ〉０，ｃｉｋ＋ｃｋｊ≥ｃｉｊ，给出了求解Ｋ－ＴＰＳ问题的有效途径，得到了目标函数的更好的界值估计，Ｃ（Ｈａ）≤γ（ｎ）Ｃ（Ｈ＾＊）－（γ（ｎ）－１｛（ｋ－１）ｃ１１＋∑ｃｉｉ｝。     

数值求解Kuramoto—Tsuzuki方程的广义Box格式

本文对于Ｋｕｒａｍｏｔｏ－Ｔｓｕｚｕｋｉ方程的混合初边值问题构造了一个广义Ｂｏｘ格式，可用追赶法求解。证明了该差分格式是唯一可解的，且当τ＝Ｏ（ｈ＾ε＋／４）（ε〉０）时在ｌ２范数下以Ｏ（τ＾２＋ｈ＾２）阶收敛。特别可取τ＝Ｏ（ｈ）。     

TiAl合金高温拉伸流变应力与Zener—Hollomon因子的关 …

把温度Ｔ和应用速率ε对Ｔｉ－４７－２Ｍｎ－２Ｎｂ（ＴｉＡｌＭｎＮｂ）和Ｔｉ－４７Ａｌ－２Ｍｎ－２Ｎｂ－０．８ＴｉＢ２（ＴｉＡｌＮＭｎＮｂＢ）合金在１０７３～１３７７３Ｋ和１０＾－５～１０＾－１ｓ＾－１条件范围内拉伸应力的影响归结为Ｚｅｎｅｒ－Ｈｏｌｌｏｍｏｎ因子Ｚ＝εｅｘｐ（Ｑ／ＲＴ）的影响,利用Ｓｅｌｌａｒｓ和Ｔｅｇａｒｔ提出的双曲函数,确定两种合金拉伸形变应力峰值σｐ与Ｚ因子之间的关系函数;得     

Pb—Ag—Ca新型阳有在MnSO4—H2SO4溶液中腐蚀速度的测定

分别测定了ＰＡＣ电极（Ｐｂ－Ａｇ－Ｃａ新型阳极的简称）在ＭｎＳＯ４－Ｈ２ＳＯ４溶液中的阴极极化曲线及阳极极 线，从图中求得：ｉｃｏｒ＝１５．８５μＡ／ｃｍ＾２，ψωｒ＝－０．０９５Ｖ，Ｖｃｏｒ＝２．９５Ｋｇ／ｍ＾２ａｎｎ．７．９０％（电极重量每年消耗的百分数）ｉ。（２）＝５４．７０μＡ／ｃｍ＾２及ｉ。（３）＝１．１０μＡ／ｃｍ＾２；讨论了ＰＡＣ阳极的腐蚀机理即反应（２）受反应（３）的动力学参数所     

实对称矩阵逆特征值问题的可解条件

该文考察以下２个逆特征值问题（１）问题（ＳＡ）；设Ａ＝（ａｉｊ）为ｎ阶实对称矩阵，其主对角元ａｉｊ＝０，ｉ＝２，．．．．ｎ，给定时角矩阵Ａ＝ｄｉａｇ（λ１，λ２，．．．．λｎ）∈Ｒ＾ｎ×ｎ，求一实时对角矩阵Ｘ＝ｄｉａｇ（ｘ１，ｘ２，．．．．ｘｎ）∈Ｒ＾ｎ×ｎ，使λ（Ａ＋Ｘ）＝λ（Ａ），（Ⅱ）问题（ＳＭ）：设Ａ（ａｉｊ）为ｎ阶实时对称矩阵，其主对角元ａｉｊ＝１，ｉ＝１，２，．．．．ｎ。给定对角矩阵Ａ     

丙烯酸冰片酯—丙烯腈共聚合及其聚全物的性能

测定了丙烯冰异片酯（ＩＢＡ）与丙烯腈（ＡＮ）的共聚合反应况聚率。当Ｍ１＝ＡＮ，Ｍ２＝ＩＢＡ，测得ｒ１＝０．４９，ｒ２＝０．２３。共聚物的拉伸与压缩强度较ＰＩＢＡ有较大提高；Ｔｇ值均在１００℃以上；共聚物透明性好，折光指数ｎＤ＾２５在１．５０１７～１．５０６８之间。     

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     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

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