汽车ABS模糊神经网络控制系统

针对汽车的防抱死制动系统（ＡＢＳ）工作特点和性能要求，在模糊自适应控制（ＦＡＣ）和神经网络控制的基础上，采用模糊神经网络控制（ＦＮＣ）方案对汽车ＡＢＳ控制系统进行了研究，比较了ＦＡＣ和ＦＮＣ方案．结果显示，汽车ＡＢＳ的ＦＮＣ是成功有效的．且在设计模糊控制器时采用了本文提出的推理轨迹的方法，使模糊控制系统的优化设计更为便捷有效．     

一种新型水处理方法——SBR法

通过介绍序批式活性污泥法（ＳＢＲ）用于污废水处理的原理、运行方式及优点，指出ＳＢＲ法在中小型常规污水处理领域较传统的连续流式活性污泥法（ＣＦＳ）有更广阔的应用前景，并将在一定程度上取代ＣＦＳ，降低建设成本和运行费用．     

低维工程优化问题的一种新的有效算法

本文给出了适用于小规模（例如维数ｎ＜１０）工程优化问题的一种新的有效算法，称为ＳＡＭＴ，即序贯增广罚函数极小化方法。文中详细介绍了ＳＡＭＴ的两种具体算法，都是应用增广罚函数的原理，再采用可变多面体搜索法（单纯形法，Ｎｅｌｄｅｒ－Ｍｅａｄ）求解该函数的无约束极小值。应用ＳＡＭＴ和ＳＷＩＦＴ两种算法对三个试验问题和三相变压器优化设计模型进行了计算与比较，结果说明对于有约束的优化问题，ＳＡＭＴ算法比ＳＷＩＦＴ算法收敛更快。     

（F_n，F_m）的一般结果

关于求（Ｆｎ，Ｆｍ）的问题，陈景润求得了（Ｆｎ，Ｆ（ｎ＋１）），吴佃华求得了（Ｆｎ，Ｆ（ｎ＋２）），不久又求得了（Ｆｎ，Ｆ（ｎ＋ｋ）），ｋ＝３，４，５，６．这里用数论方法，导出（Ｆｎ，Ｆｍ）的一般结果。     

纤维增强复合材料层合板弯曲挠度的优化设计

本文采用变尺度法（ＤＦＰ）求解承受横向载荷的纤维增强层合板弯曲挠度的优化设计．这是无约束的优化问题，一维搜索使用０．６１８法，用ＦＯＲＴＲＡＮ语言编制了计算程序。     

基于遗传算法的计算机通信网优化设计

计算机通信网中将路由选择和链路容量分配综合起来考虑时的优化设计模型（ＣＦＡ）是一个复杂的非线性０－１规划，若采用传统的数学方法求解，无法快速有效地求得工程满意解。文中以遗传算法的基本思想为基础，设计了一个与传统方法完全不同的遗传寻优算法。对计算机通信网优化设计实例的计算表明，该算法能够迅速求出ＣＦＡ问题的全局近似最优解，并且解的精确度很高，能够满足工程设计中的要求。     

频域法辨识同步机参数

提供和比较了静态频率响应法（ＳＳＦＲ）和在线频率响应法（ＯＬＦＲ）两种测定同步机参数的方法。两种方法都能提供ｄ轴和ｑ轴的参数，并都经过实验验证，ＳＳＦＲ方法简单易行，获得的数据与设计值接近。ＯＬＦＲ法先进、可靠；由于考虑了饱和与转子阻尼等影响，其参数更接近于实际运行工况时的结果。     

网络优化技术在油田注水系统设计中的应用

从系统工程的角度出发,通过运用网络优化技术,对油田注水系统进行了计算机优化辅助设计．在综合考虑油田注水系统的投资费用与长期运行损耗费用均衡的基础上着重解决了油田注水系统的结构优化设计问题,并以此为线索建立了整个输水管网的优化设计数学模型．     

多变量模糊推理系统的神经网络实现

以双缸连通液面Ｆｕｚｚｙ控制系统为模型，研究了多变量Ｆｕｚｚｙ推理系统的神经元网络实现问题。这里主要考虑如下二个问题：（１）ＢＰ网络在语言环境下实现多变量Ｆｕｚｚｙ推理系统的有效性；（２）神经网络结构（隐层节点个数及输出层激发函数）对推理结果的影响。仿真结果表明，在语言环境下ＢＰ网络具有很强的近似推理能力，基于ＩＦ－ＴＨＥＮ的多变量Ｆｕｚｚｙ推理系统可由一个ＢＰ网络训练学习而加以实现，从而为有效的实现多变量复杂系统的Ｆｕｚｚｙ控制奠定了基础。     

不同超滤膜深度处理印染废水试验研究

随着我国超滤膜材料的开发、膜制造技术．的日益成熟和膜清洗方法的不断改进，超滤膜因为其高效经济的集成化工艺、构筑物占地面积小、投资运行费用低，分离过程简单、投资费用和能耗低等特点，逐步替代了传统的常规印染废水深度处理技术，在印染废水深度处理中得到了越来越广泛的应用。实验采用不同规格和材料的超滤膜进行染整二级尾水分离实验，对比分析了污染前后膜面的接触角以及不同切割分子量对膜通量及出水水质的影响，对超滤膜的污染机理进行了初步研究，分别对三种膜聚醚（PES）膜、膜聚砜（PSF）、膜和聚醚酰亚胺（PEI）膜的结果及使用性得到了相应分析结果。     

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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