不完全判断矩阵权值的粒子群优化算法计算

不完全判断矩阵权值求解是一个重要问题。在分析不完全判断矩阵权值求解的各种方法基础上，提出以使判断矩阵的最大特征值达到最小为目标，建立求解权值准则。给出利用粒子群优化算法解决此问题，实例表明该方法比较有效。     

层次分析法的改进方法在煤矿安全评价中的应用

针对研究煤矿安全评价中层次分析法判断矩阵一致性及排序权值的求解问题.基于煤矿环境的特殊性及系统的复杂性,为能够全面评价煤矿的安全状况,采用层次分析法对煤矿进行安全评价.判断矩阵的一致性保证、权重的求解是层次分析法的主要环节,如何求得元素的权重并确保判断矩阵满足一致性是层次分析法的主要研究方向.采用遗传算法求解判断矩阵排序权值,并运用模糊综合评价法对煤矿系统安全进行综合评价.     

群体判断矩阵及权向量的线性规划算法

本文研究层次分析法中的群决策问题.文中对由多个判断决策者给出的多个判断矩阵,通过求解线性规划的方法先综合成一个完整的判断矩阵,然后以此判断矩阵的权向量作为群体判断时权向量的一种最优逼近;通过对群体判断矩阵的一致性问题进行讨论,又给出了一种加权线性规划算法。理论分析和应有实例均表明,应用线性规划和加权线性规划法求解群体判断矩阵是可行的.     

基于矩阵分解的不完全偏好值信息双边匹配决策

针对匹配主体没有提供全部偏好值信息的双边匹配问题,提出了一种基于偏差矩阵分解技术解决不完全偏好值信息双边匹配问题的决策方法。给出了基于部分偏好值信息的双边匹配问题的描述,利用偏差矩阵分解技术,充分挖掘用户的潜在偏好,填充缺失偏好值,将匹配双方的不完全偏好值矩阵转化为完全偏好值矩阵并进一步转化为满意度矩阵。建立匹配优化模型并通过模拟退火算法求解,实验结果表明,该决策方法可行。     

语言判断矩阵的一致性及排序

为了满足决策者对于不同决策的偏好,采用语言术语下标以零为中心的对称语言评估标度,给出语言判断矩阵具有完全一致性和满意一致性的充要条件,得出判断元素底数可调的导出矩阵,从而得出一种可调排序权值的确定语言判断矩阵排序向量的方法。这新方法是实用和有效的。     

区间数判断矩阵满意一致性递推排序方法研究

研究了区间数判断矩阵的一致性和递推排序方法. 根据区间数判断矩阵的概念给出了区间数判断矩阵的完全一致性定义, 通过对完全一致性性质的讨论演绎出区间数判断矩阵的一致性和满意一致性定义及其判别方法，并且研究了一致性和满意一致性定义的合理性, 提出了求解区间数判断矩阵排序向量的递推排序方法, 最后用算例验证了方法的有效性.     

层次分析法中判断矩阵的群组综合构造方法

在AHP模型中 ,请一组专家对某一属性进行评价 ,根据专家的判断能力 ,给出判断力权值 ,再通过适当的数学处理方法 ,可得最优判断矩阵 ,并根据残差来确定所求判断矩阵是否达到精度要求 ,若不符合精度要求 ,则需返还给专家进行重新评估 .这是AHP中构造判断矩阵的一种新方法 .     

基于残缺互补判断矩阵的多指标决策方法

针对具有残缺互补判断矩阵形式方案偏好信息的多指标决策问题,提出了一种决策分析方法.对具有残缺互补判断矩阵的多指标决策问题进行了描述.依据残缺互补判断矩阵和决策矩阵,构建了求解指标权重的最优化模型.采用拉格朗日乘数法求解该模型,得到每个指标的权重值,进而计算出每个方案的综合评价值,从而可得到所有方案的排序结果.最后,通过给出一个算例说明了该方法的可行性和实用性.     

基于现场可编程门阵列的矩阵求逆算法设计

针对自适应抗干扰算法在更新最优权值时存在时间延迟问题,提出了一种基于Cholesky分解的矩阵求逆算法实现架构。该实现架构主要包括协方差矩阵计算模块、Cholesky分解模块、计算下三角矩阵的逆矩阵模块、三角矩阵相乘和权值计算模块。本设计可完成在最短权值更新时间的前提下,对高阶采样矩阵进行求逆运算。仿真结果表明,在FPGA的硬件平台上,一次权值的更新时间只需要1.2 ms。本设计为自适应抗干扰快速求解权值提供了一种切实可行的解决方案,对存在类似需求的权值求解系统具有一定的参考价值。     

几种区间数判断矩阵排序权向量计算方法的比较研究

区间数判断矩阵的研究越来越受到更多学者的关注 ,有关理论和方法的研究也已经取得了一定的成果 .首先介绍了区间数判断矩阵的有关概念 ,然后简要地介绍和评述了区间数判断矩阵排序权向量或综合评价值的计算方法 ,最后对各方法进行比较并给出计算示例 .这为进一步研究区间数判断矩阵提供了初步的理论基础 .     

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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