基于α-截集的模糊数排序方法研究

提出了一种基于α-截集的模糊数排序方法.这种方法的思想是:模糊数在α-截集下的区间数中点与其相应权重之积越大越好,通过积分来表示模糊数的排序指标.若存在2个模糊数相等的情形,通过它们的离散度来给出它们的排序.提出了基于α-截集的三角模糊数互反判断矩阵的目标规划法.结合本文所给出的模糊数排序方法,得到各方案的最终排序,从而说明其有效性和实用性.     

基于综合扩展优势度排序L-R型模糊数的方法

根据决策者的偏好及L-R型模糊数的左、右扩展优势度定义该类型模糊数综合扩展优势度,再依据综合扩展优势度,计算每个模糊数相对于其它模糊数综合优势度的几何平均值,以确定模糊数的排序向量,提出一种基于综合扩展优势度排序L-R型模糊数的方法,并用算例进行检验．算例验证表明,该方法在一定程度上克服了现有模糊数排序方法存在的缺陷．     

基于逼近理想点排序模糊数的方法

利用左右优势度及贴近度等概念定义正负理想点,并通过α截集的方法把模糊数变成区间数,再利用期望值把它映射到数轴上,然后求出期望均值到左右理想点的距离,最后利用其距离形成一个类似贴近度的综合排序指标,用此来对模糊数排序.实例说明该方法计算简单,能够克服现存的一些排序方法的缺陷,且便于运用在实际问题中.     

基于可能度的梯形模糊数排序方法

根据梯形模糊数互补判断矩阵概念和梯形模糊数相互比较的可能度公式,给出一种基于可能度的梯形模糊数排序方法,然后通过实际算例说明该方法的可行性和有效性.     

基于相对优势度的直觉模糊多属性决策方法

把区间数的相对优势度概念推广到直觉模糊数,再根据直觉模糊数两两比较的相对优势度构建模糊互补判断矩阵,提出一种直觉模糊数的排序方法,并将此排序方法应用到直觉模糊多属性决策中,得到一种基于相对优势度的直觉模糊数多属性决策方法．     

基于三角模糊数互反判断矩阵一致性的多目标决策方法

针对决策信息为三角模糊数互反判断矩阵的模糊多目标决策问题.首先,介绍了数值型互反判断矩阵及其一致性、三角模糊数相互比较的可能度公式、三角模糊数互反判断矩阵及其一致性等知识.其次,基于三角模糊数一致性互反判断矩阵概念及最小偏差建立一个线性规划模型,通过求解该模型得到三角模糊数互反判断矩阵的排序向量,根据排序向量比较的可能度所建立的数值型互补判断矩阵的排序公式对方案排序.提出了一种新的模糊多目标决策方法.最后,通过风险投资项目的选择验证了方法是行之有效的.     

基于三角模糊数权重信息不完全的多属性决策方法

针对属性值为三角模糊数且权重信息不完全的多属性决策问题,提出了一种基于三角模糊数权重信息不完全的多属性决策方法.该方法首先利用权系数的不完全确定信息,建立关于各方案综合三角模糊数与理想解和负理想解的加权距离优化模型,通过求解优化模型得到各属性权重值,之后根据各方案到相对理想解的贴近度的大小进行排序.实例分析表明了该方法的有效性和可行性.     

基于区间直觉模糊数Choquet积分算子的TOPSIS方法

针对区间直觉模糊数的多属性决策问题,提出了一种区间直觉模糊(IVIF)Choquet积分算子,结合传统的逼近理想解排序(TOPSIS)方法,对TOPSIS算法进行改进来处理区间直觉模糊数之间的相容性问题.该方法利用隶属度和非隶属度以获得专家对属性的肯定性评价,根据重要性权重排序函数,构造了基于区间直觉模糊数的海明距离Choquet积分算子,最后,通过一个实例证明该方法的有效性和可行性.     

基于梯形直觉模糊数的TOPSIS多属性决策方法

针对属性值为梯形直觉模糊数的多准则决策问题,给出了一种基于梯形直觉模糊数的TOPSIS多属性决策方法.根据提出的梯形直觉模糊数的Hamming距离公式,计算各方案和梯形直觉模糊数正负理想方案的距离,从而求得各方案和正理想解的相对贴近度,基于贴近度大小对方案集进行排序.最后,用数值实例进一步说明了该梯形直觉模糊TOPSIS方法的有效性和实用性.     

直觉判断矩阵的直觉模糊数型权重研究

研究了确定直觉判断矩阵的权重问题,并对与权重的可靠性密切相关的直觉判断矩阵的一致性问题进行了探讨.从直觉模糊数的得分函数和精确度函数角度给出直觉判断矩阵的加型一致性的新定义,并导出加型一致性的等价条件.为了充分利用原直觉判断矩阵的信息以及使决策符合一致性要求,根据加型一致性的等价条件运用转换函数将原直觉判断矩转换为两个加型模糊一致性互补判断矩阵,然后对这两个加型模糊一致性互补判断矩阵运用行和归一的方法分别求出原直觉判断矩阵权重的隶属度和非隶属度,从而得到直觉模糊数型权重,并利用直觉模糊数的排序方法进行排序.最后讨论了决策方法的优良性质,并通过实例验证了决策方法的有效性和实用性.     

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

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