构建区间数排序准则下的多属性群决策理论与实践

针对多属性群决策问题,构造区间数表达属性值并用区间数熵值法确定属性权重;建立区间数排序模型,利用各方案中加权的属性优劣个数进行比对决策.基于此,提出一种区间数排序准则下的多属性群决策方法.最后通过实例对决策过程做了详细说明,结果表明该决策理论指导实践科学有效.     

基于联系数的多属性决策模型

针对权重为区间数且属性值为实数和区间数相混合的多属性决策问题,提出了基于联系数的多属性决策模型.该模型将区间型权重、实数型及区间型属性值转化成联系数的形式,利用联系数的运算规则确定决策方案的排序.该方法集确定与不确定分析为一体,反映了不确定性对结果的影响,所需计算量较少,便于应用.实例分析验证了该方法的有效性和实用性.     

矿山设备选型的多属性决策模型

为了选择到性价比最优的矿山设备,综合考虑设备的多个属性,建立多属性决策模型。该模型以属性标准化为基础,利用模糊粗糙集确定属性权重,比较设备的属性值与参考值,最终确定与期望值偏离最小的方案为最优方案。以购买气动凿岩机为例,分析多属性决策的有效性。结果表明：该模型能够综合平衡各个指标,设备排序明确合理,优化了矿山设备的选型决策。     

带有方案偏好关系的区间型多属性决策方法

给出属性值为区间数、属性权重完全未知但已知方案偏好关系的多属性决策问题的决策方法。该方法首先通过求解一个二次规划模型来确定属性的权重,然后基于简单加权法则来计算方案的模糊综合评价值,再根据区间数的排序方法来对方案进行排序,从而得到最优方案。     

基于Jaynes最大熵的模糊多属性群决策投影方法

为了解决属性权重完全未知的模糊多属性群决策问题,采用基于Jaynes最大熵原理的投影偏差模型确定指标权重,运用基于多准则妥协解排序法的妥协解排序框架实现决策过程。首先运用区间直觉模糊集表达决策者的犹豫模糊评价信息,然后运用集成算子获得综合决策矩阵,再运用Lingo11~求解获得属性权重,利用信息集结获得备选方案的加权投影,最后根据方案的最大群效应值、最小后悔值和综合指标值进行方案排序。实验显示,方案的排序结果与其它方法保持一致,趋势图显示此方法计算的各方案综合指标值变化趋势更明显。分析表明,该方法避免了其他权重确定方法的不足之处,消除了计算过程中的折衷损失,适用于属性权重完全未知的多属性群决策方案排序问题的评价。     

基于投影的不完全信息直觉模糊多属性决策方法

针对权重信息和属性值信息都不完全确定的多属性决策问题,提出了一种基于投影的直觉模糊多属性决策方法。该方法利用直觉模糊集表示不完全的属性值,并以直觉模糊加权投影衡量可选方案与理想方案之间的相似度;在此基础上,通过优化求解非线性规划模型得到了属性权重;并根据方案与正、负理想方案的相对贴近度进行了优劣排序。算例分析结果表明,该方法可以有效解决不完全信息下的多属性决策问题。     

带有Fuzzy偏好关系的多属性决策方法

带有方案偏好信息的多属性决策问题是多属性决策分析中一类常见的问题·根据决策者给出关于方案的Ｆｕｚｚｙ偏好关系,提出了一种新的多属性决策方法·该方法是通过建立一个线性目标规划模型来确定属性的权重向量,使最终决策方案的排序结果最大程度地反映决策者的偏好·最后给出了一个算例·带有Fuzzy偏好关系的多属性决策方法@樊治平@肖四汉     

基于相对熵的多粒度不确定语言型群决策方法

针对决策者属性权重信息不完全条件下的多粒度不确定语言型多属性群决策问题,提出了一种决策分析方法.该方法首先使用二元语义转换函数对多粒度语言信息进行一致化处理,然后通过建立使得备选方案对正理想解相对熵最小、负理想解相对熵最大的最优化模型确定决策者的属性权重,最后使用不确定二元语义变量的有序加权平均算子获得决策群组的评价结果,并通过计算备选方案优于其他方案的可能度,给出备选方案的排序.算例说明了所提方法的可行性和有效性.     

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.     

基于属性权重向量组的多属性决策方法

文章基于属性权重完全未知的直觉模糊多属性决策问题,提出了一种属性权重向量组的决策方法。该方法认为决策对象应具有独立的属性权重,结合熵与离差最大化,确定所有选项的属性权重,构成一个权重向量组,并通过理想解与选项之间的关联系数进行排序。最后,文章通过算例说明了该方法的可行性。     

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.     

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

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     

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