AHP法在江西脆弱生态环境评价指标体系中的应用

根据区域脆弱生态环境评价指标体系建立的原则,结合本区脆弱性的特点,建立了江西省脆弱生态环境评价指标体系;采用AHP法计算各指标的权重,得到了4个层次的层次单排序。在此基础上,确定了各层次各因子相对的权重,用于评价江西省脆弱生态环境的脆弱程度。结果表明,江西省脆弱生态环境评价指标体系中,目标要素B以人为干扰脆弱（B2）为主,占73％;指标层（D）中20个指标相对应总目标A的权重值排序结果显示,森林覆盖率所占的权重最大,达0．2044,水土流失强度的权重次之,为0．1825,二者占20个指标的比例达39％之多,平均各占19．5％;其他18项指标之和只占61％,平均各占约39％,且单项权重值均小于0．1,足以反映影响江西省脆弱生态环境程度的主导因子是人为干扰脆弱为主,即森林覆盖率和水土流失强度。     

基于熵权法对长江水质的综合评价

以长江流域的水质为研究对象,应用熵权法对其进行量化评价,考虑多个样本间的联系,根据各项指标的差异程度,确定各指标的权重,可削弱异常值的影响,使评价结果更合理、准确。文章通过对长江近两年多的水质情况分析,根据各污染因子对水质的影响差异确定其权重,运用矩阵分析的方法建立了水质模糊综合评价模型,从而进行了水质多指标的综合评价。     

汽车平顺性评价体系

为了对汽车平顺性进行评价以及对悬架参数进行优化选择,根据汽车平顺性的3个评价指标,充分利用主观评价法和客观评价法各自的优点,建立了一个汽车平顺性评价体系．根据各评价指标的重要性,利用层次分析法,确定它们的主观权重;根据各评价指标的性能统计数据,利用熵值法,确定它们的客观权重;综合主观权重与客观权重,确定各评价指标的最终权重;根据各评价指标的最终权重与性能统计数据计算汽车平顺性的评价值．该评价体系以逐次淘汰的方式求优,通过最小的评价值与最优的汽车平顺性相对应的方式评选出最优的悬架参数方案,该体系便于计算机编程使用．     

服装模特形体评价标准分析与研究

针对服装行业中所选用的模特评价标准缺乏准确性和科学性,力求为构建一套具有较强科学性的服装模特体型评价标准进行基础的定量分析,为正确制定号型规格标准、建立服装原型等提供理论参考.对来自20所高校服装表演专业的150名学生的15项数据指标利用非接触式人体测量仪进行测量,进而随机提取55名女大学生模特形体数据样本进行分析处理.首先,用SPSS软件对数据进行因子分析处理提取出三个主成分因子;其次,对三个主成分因子进行权重分析确定各形体指标的权重系数.结果表明:身高、胸围、腰围、臀围、体重等指标是最重要的模特体型因子.根据权重系数的大小构建出科学简便的模特体型评价得分标准.     

住宅小区房地产投资经济风险的评估

文章分析了住宅小区房地产投资经济风险的多层次影响因素,在单指标因子的基础上运用层次分析法建立总目标影响结构层次模型,确定了各指标归一化权重.并运用模糊综合评价模型将各评价单元加以归并,获得目标的评价总分值.文章将风险评价度予以量化处理,并通过实例分析对该理论作了实际的操作,为房地产投资风险研究方法的进一步改进提供了可靠的依据.     

基于因子分析定权的水质评价模型

在因子分析法的基础上,提出基于因子分析定权的水质评价模型.该模型由因子得分系数和方差贡献率确定指标权重,然后以指标权重与各水样相应指标的标准化值进行加权平均得到水质评价的综合指标值,进而对评价样本进行排序和分级.结合实例应用并通过与其它几种水质评价方法的比较,进一步验证了该模型的合理、简便和实用.     

基于模糊多层次综合评价的风电建设项目社会评价

根据风电建设项目自身的特点运用模糊数学的理论和方法,建立风电建设项目社会评价的模糊多层次综合评价模型,建立风电建设项目社会评价的指标体系。运用AHP的基本思想,创造性的使其与模糊多层次综合评价模型中指标分层思想相结合,对指标分层,确定各指标权重。最后,运用该模型对某风电建设项目进行社会评价,验证其实用性,为项目的投资决策和资本运作提供科学的依据。     

层次分析法在高校领导干部经济责任审计评价中的应用

从审计实践的角度,建立了高校领导干部经济责任审计评价指标体系。建立的递阶层次结构共分为4层,从整体上对审计对象经济责任的履行情况和业绩进行综合分析。专家小组根据构建的评价指标体系,运用两两比较法,逐层分析指标之间相对重要性,综合其结果,得出判断矩阵,通过应用层次分析法及MATLAB软件,探讨了在确定高校领导干部经济责任审计评价指标权重中的一般程序,计算出各指标对总目标的权重值,相对准确地反映出评价对象的客观情况,不仅使审计评价结果更加直观化、数量化,而且还实现了高校领导干部经济责任审计的科学评价与判断。     

基于主成分分析法的沥青路面使用性能评价

针对现有沥青路面使用性能综合评价中存在主观影响因素过多、权重确定复杂的问题,采用主成分分析法对河南省4条高速公路沥青路面使用性能的实测数据进行了评价,并与<公路养护技术规范>方法和灰色理论方法的评价结果进行了比较.结果表明:主成分分析法采用适当的主成分综合分析原始指标的信息,以各主成分的方差贡献率为权重,可以客观地确定各评价指标的权重,反映各指标对总体评价结果的影响;经线性加权求和得到的综合评价指标能够克服主观因素的影响,使沥青路面使用性能评价结果更加客观、可靠.     

主成分分析法在地区企业经济效益评价中的应用

在多指标综合评价中,主成分分析方法是一种较为客观的综合评价方法．利用这种方法对企业的经济效益指标进行综合评价,不仅能综合反映各企业经济效益强弱的各项信息,而且可以确定各指标的客观权重．由此避免了决策者在多指标综合评价中遇到的需要确定指标权重的问题．应用主成分分析方法,以2001年中国各地区全部国有及规模以上非国有工业企业主要经济效益指标为基础数据,对各地区工业企业经济效益进行综合评价．评价结果与各地区企业的实际情况基本吻合．     

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     

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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