广义M-集和充满J-集及组合加速逃逸时间法

利用作者构造的迭代函数给出了一种新的广义Ｍａｎｄｅｌｂｒｏｔ－集与充满的Ｊｕｌｉａ－集的组合加速逃逸时间算法,本算法在迭代点位于广义Ｍａｎｄｅｌｂｒｏｔ－集或充满Ｊｕｌｉａ－集内部时也能很快地被判定,在保持了原算法精度的基础上,大大地加快了构造分形集的速度     

广义M集演化的研究

阐述了由复映射ｚ←ｚα＋ｃ(α∈Ｒ)所构造的广义Ｍａｎｄｅｌｂｒｏｔ集(简称广义Ｍ集)的定义;通过改变参数α,作出了一系列广义Ｍ分形图;研究了广义Ｍ集的分形结构特征及其演化过程,发现相角θ范围的不同选取导致了广义Ｍ集的不同演化,并首次给出广义Ｍ集的４种演化过程·     

由复映射z←z~α c(α>0)所构造的广义M集嵌套拓扑分布结构的探讨

阐述了由复映射ｚ←ｚα ｃ(α >0 )所构造的广义Ｍａｎｄｅｌｂｒｏｔ集 (简称广义Ｍ集 )的定义 :改变参数α ,作出了一系列分形图 ,这些分形图类似若干花瓣的花朵 ;研究了广义Ｍ集的嵌套拓扑分布结构及四种演化过程·由复映射z←z~α c(α>0)所构造的广义M集嵌套拓扑分布结构的探讨@王兴元 @朱伟勇     

构造分形集的组合逃逸时间算法

基于Ｍａｎｄｅｌｂｒｏｔ集和Ｊｕｌｉａ集等构造分形集的典型方法的算法，使用扫描视窗技术，对不同扫描范围（内部或外部分形集）给出不同的时间逃逸组合，得到新的算法，即组合时间逃逸算法。     

分形图案的快速生成法

该文给出了经典Ｍａｎｄｅｌｂｒｏｔ集合和Ｊｕｌｉａ集合的概念，分析了常用的点点计算法的特征，在此基础上设计出快速的有限递归细分算法（ｆｉｎｉｔｅｒｅｃｕｒｓｉｏｎｓｕｂ－ｄｅｖｉｄｅ，简称ＦＲＳ）。利用这２种算法生成Ｍａｎｄｅｌｂｒｏｔ放大集以及三角函数、指数函数、Ｇａｕｓｓ和函数、Ｎｅｗｔｏｎ解函数的Ｊｕｌｉａ集合并进行比较，ＦＲＳ法一般要比点点计算法快３～５倍，解决了微机生成分形图案时间太长的问题。通过快速算法显示出分形图案的内部蕴涵的精妙结构，提供了深入研究分形的手段     

组合加速逃逸时间法构造M—集和充满的J—集

利用作者构造的迭代函数给出了一种新的组合加速逃逸时间算法。本算法在迭代点位于Ｍａｎｄｅｌｂｒｏｔ－集或充满的Ｊｕｌｉａ－集内部时也能很快地被判定，在保持了原算法精度的基础上，大大地加快了构造分形集的速度。     

构造高阶广义Julia分形图及旋转逃逸时间算法

应用作者提出的“旋转逃逸时间算法”，构造了一系列高阶复映射变换；ｆ（ｚ）＝ｚ＾ｍ＋ｃ的高队Ｊｕｌｉａ。由于算法的改进，不仅使这些独特而奇妙的Ｊ－分形图特别引人赏心悦目，而且使构造和应用这些分形图并为电脑艺术家建立分形图图库创造了有效的途径。     

含参有理函数族M集的拓扑不变特性

利用Ｎｅｗｔｏｎ法对应的有理函数族给出一系列新的广义Ｍａｎｄｅｌｂｒｏｔ集和Ｊｕｌｉａ集,通过计算机研究了它们与典型Ｍａｎｄｅｌｂｒｏｔ集和Ｊｕｌｉａ集之间的关系,并对Ｍａｎｄｅｌｂｒｏｔ集与Ｊｕｌｉａ集之间的关系进行了分析,解析分析了广义Ｍａｎｄｅｌｂｒｏｔ集的有界性、芽苞周期和不同周期芽苞个数,为Ｍａｎｄｅｌｂｒｏｔ集和Ｊｕｌｉａ集的发展提供了新的思路·     

三维MANDELBROT过程的渗流下临界状态

本文研究了三维Ｍａｎｄｅｌｂｒｏｔ过程渗流下临界形态，证明了渗流函数θ（Ｐ）在Ｐ＿ｃ点是不连续的，同时得到了当Ｐ＜Ｐ＿ｅ时，三维Ｍａｎｄｅｌｂｒｏｔ渗流Ａ的最大连通分支是点，即Ａ是“尘状”的。     

复多项式虚实部互换构造广义M集及J集

在研究经典Ｍ－集构造方法的基础上，进一步将复多项式虚实部互换构造广义高阶Ｍ－集并对Ｍ－集的特征进行了分析研究，根据作者提出的旋转逃逸时间算法构造一系列相应的高阶Ｊｕｌｉａ集。     

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.     

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     

Journal of Donghua University ( English Edition) Contents of Volume 31

正~~