面向复杂系统的智能协同建模方法研究

传统建模方法在实际大规模复杂工业系统应用中受到限制，人工智能在一定程度上克服了这个问题。但任一种智能建模方法都难以完满足综合化、复杂化的工业过程控制要求。提出复杂系统智能协同建模的概念，研全究它们在一定约束条件下的协同建模及优化机制，建立智能协同系统模型，并将其应用于热连轧实际生产过程中，为复杂系统建模提供了一条新的途径。     

城市生长的理论模型及应用

城市系统是个典型的开放复杂系统,将其视为开放的网络,并引入广义信息熵对其进行描述,由此建立了城市系统结构生长的理论模型.作为复杂系统建模新方法,本模型可揭示复杂城市系统中多组元作用动力学及整体结构演化过程.以上海市城市系统生长模式为例给出了本模型的典型应用.     

复杂诊断系统的MAS分布式协作方法

为适应故障诊断中动态变化的环境和满足求解复杂系统全部任务的要求,研究一种基于MAS的分布式智能监控系统。以诊断决策问题的结构及建模过程的层次性为基本思想,基于诊断任务的多层次混合分解策略,提出融合不同表达方式和推理机制的多Agent并行诊断结构,建立了具有公共属性的智能体模块化层次结构,实现了基于MAS多层分布式黑板模型的智能监控系统。工程应用效果验证了多智能体结构框架下复杂系统分布式求解的可行性和有效性。     

多智能体系统智能体协作层的设计与实现

提出了一种多智能体系统及智能体的框架结构，描述了该多智能体系统智能体协作层的设计与实现，为面向工业应用的多智能体系统开发环境的研制提供了基础。     

基于多智能体的人群集散动态模拟模型与实现

智能体从模拟个人的行为出发,以拟人化方法描述、解释、预测一个复杂系统的行为,可以有效仿真群体的行为形态.针对城市中人群流动这一复杂对象,突破传统思维,以复杂自适应系统理论研究为背景,采用基于多智能体系统的建模方法和自下而上的研究思路,提出了研究城市空间内人群流动形态的模型框架,构建了一个城市人群流动动态演化模型,并在此基础上利用GIS(地理信息系统)技术加以实现.     

多模型切换在系统建模与仿真中的应用

论述了具有复杂多模型切换的非线性系统的建模与仿真原理 ,举出了在变结构控制中的应用实例。在仿真建模中引入多模型的概念 ,使得对于仿真右端不连续的复杂非线性系统 ,概念清晰 ,分析直观 ,描述能力强。     

面向大规模定制协同生产的工业机理建模

随着工业互联网的发展,世界各国正在围绕工业制造进行数字化革命,加速构建以智能化生产、个性化定制和协同生产为特征的工业新生态。工业场景中存在许多工业机理,对工业机理的表述及推理是工业互联网的研究难点。对工业机理的有效表达在构建工业机理库过程中发挥着非常重要的作用。工业机理中包含着能力和条件等多维度、细粒度的信息,而传统的本体建模方法仅描述了工业场景中的基本信息,缺少对能力的表达,难以描述复杂的工业场景。提出了能够表达工业机理的三层本体建模框架,定义了适用于工业机理建模的元模型,并在其基础上定义了三层工业机理模型。三层模型包含了针对不同工业场景适用的组成视图、能力视图和模式视图,以及相应的操作集,在此基础上完成模型在多样化工业场景中的适配与应用。最后以家电领域为案例,详细介绍了三层模型对工业机理的表述以及在个性化定制中的应用。     

神经网络在复杂系统建模中的应用

 分析了神经网络模型的特点、复杂系统的特征与建模方法论要求,表明神经网络应用于复杂系统建模可行且适用。探讨了当前神经网络在复杂系统建模中应用的文本语言处理、语音识别、图像处理、故障诊断等,针对所存在的不能很好地描述系统结构与演化、不能同时处理多个任务、不能很好解决非重复性问题等主要不足,提出了解决这些问题的初步思路。     

经济学量化模型发展的一种新模式

分析了经济学中传统建模方法的不足,提出了基于多智能体的建模与仿真方法来建立经济系统的量化模型,论述了多智能体模型在经济研究中的应用．     

基于Agent的DEVS形式化描述与算法实现

为了解决离散事件系统规范DEVS(discrete event system specification)中没有对智能行为提供直接描述方法的问题,将智能体(Agent)建模思想引入到DEVS中,提出了一种具备一定智能性和协作性描述能力的离散事件系统规范Agent-DEVS。该规范以并行DEVS为基础,状态元组被扩充成为Agent特征元组;增加了体现个体智能性的Agent模型元组;并将模型端口的输入、输出扩展成为体现社会协作性的Agent消息类型。另外,还给出了Agent-DEVS模型的实现算法,并将其应用于企业生产调度的仿真建模。算法分析与仿真试验表明,Agent-DEVS的优点主要体现在建模性能上,它可以描述更加复杂的智能行为和自治行为,在计算时间上对整体复杂性的影响不大。     

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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