四正则哈密尔顿平面地图的数目(英文)

一个地图称为哈密尔顿的若其上的所有顶点都在一个圈上．若一个平面地图的所有顶点是四次的，且又是哈密尔顿地图，则称该平面地图为四正则哈密尔顿平面图一个地图是近四正则的，是指除去根点外，其余顶点的次均为四．本文提供了四正则哈密尔顿平面地图计数的一个公式和四正则平面地图计数的一个显式．     

带根近二正则平面地图的计数

研究了带根近二正则平面地图的计数问题,提供了以根面次和边数为参数的计数函数所满足的计数方程,并导出了一些计数显式.     

射影平面上单面地图的计数

任何一类非平面地图的精确计算都是十分困难的．通过射影平面上的有根单地图数目的探讨,提供了一个具有两个变量的精确公式．     

单行地图在曲面上的计数

单行地图为仅有两个点的点次为奇数的地图.本文主要目的是研究单行地图在一般曲面上的计数函数,并依据不同的参数建立相应的函数方程.     

关于三角化在圆盘上计数的注记

对文献<数组合地图论>中三角化在圆盘上的计数方程提供了一种参数解法,并对原来的证明过程进行了实质性的简化.     

曲面N(～3)上三类根地图的计数

研究了曲面N(～3)上3-本质根地图,给出以边为参数的精确计数表达式;还给出了曲面N(～3)上单面地图和单顶点地图的计数公式.     

关于有根外-无弦平面地图计数

讨论了一般有根外-无弦平面地图依根点次和边数的计数问题.通过建立此类地图与有根不可分离平面地图之间的关系,利用已知不可分离平面地图的结果,得到外-无弦平面地图在以边数n为参数下的个数.     

关于曲面无环根地图的普查(英文)

对于给定带根地图的根点次和棱数,提供了可定向、不可定向以及全体曲面上无环根地图的计数方程,这些微分方程都是Riccati型的.采用了一种新异的做法来求解该方程,进而由简单递推公式导出了带有两参数的无环根地图数,并给出了递推结果.与已发表的相关文献结论相比,形式上更加简洁,且可推广并应用于其他图类在不考虑亏格情况下的曲面计数.     

一般平面地图依点和面数的计数(Ⅱ)

讨论了一般有根平面地图依根点次、点数和边数的计数问题,在文(Ⅰ)的基础上获得了该类地图具有以上3变量的计数函数的参数形式解以及幂级数形式解.     

一般平面地图依点和面数的计数(Ⅰ)

主要讨论了一般有根平面地图依点数和边数的计数问题,获得了该类地图具有2参数的计数函数的一个新的参数形式解以及它的计数显式,从而简化了文献中的相应结果.     

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