分馏塔监控专家系统的研究和开发

简述了监控对象，研究和分析了监控专家系统的思想和结构，重点阐述了分馏塔监控系统的核心之一知识库的构建，给出了专家系统开发工具CLIPS的推理机，简介了解释程序的作用过程。     

化纤生产实时专家系统

本文在分析化纤涤纶短丝生产工艺的基础上,把专家系统技术与计算机过程控制技术相结合,设计了一个用于涤纶短丝生产在线监控的实时专家系统。本文对该系统的设计思想,总体结构及工程实现方法进行了探讨。该专家系统采用知识库和混合推理机结构,有效地加快了推理速度,提高了控制的实时性。     

专家系统及其在电网安全监控中的应用

电网安全监控专家系统大幅提高了电力系统安全运行的技术水平,为运行人员提供了翔实、可靠的决策判据。本文阐述了专家系统的特点、支持环境及关键技术。根据运行方式和故障判断确定决策树,利用关系数据库作为知识库的载体,实现迅速准确的故障诊断及控制功能。     

面向交-直流智能变电站运维专家系统的可扩展建模及其规则和隔离策略

为实现基于语义网的面向交-直流智能变电站运维专家系统的可扩展建模,介绍了语义网的基本概念与功能,基于C语言集成产生式系统(CLIPS)平台建立了智能变电站运维专家系统模型,以及包括专家系统交-直流稳控层、开关智能与电压合并单元层、电压合并单元层和开关智能单元层的多层规则及隔离策略,实现了从交流变电站内监控到系统稳控的立体化辅助决策.同时,以某500kV智能变电站为例,对所建变电站运维专家系统模型及其可扩展性进行说明,并验证所提运维专家系统规则与隔离策略的有效性.结果表明:基于语义网的变电站运维专家系统知识库结构更加紧凑,从而提高了知识库中不同概念之间的逻辑性和统一性;所建规则与故障隔离策略提高了运维专家系统知识库的可扩展性和实用性.     

苹果精准管理专家系统的设计与实现

为了实现苹果种植的精准管理,基于无线传感器技术设计开发了专家系统。使用控件对数据库的环境因子进行图形化显示。结合专家知识,建立数学模型,完成系统的预测决策功能。苹果精准管理专家系统最终实现对果园环境的实时监控以及苹果种植的科学管理。     

测井实时控制专家系统

论述了专家系统在实时控制与模糊评判方面的应用。实时专家系统由元级控制和目标级控制组成。元级控制采用模糊知识，模糊推理及不精确推理完成模糊决策，模糊评判及对目标级控制的监控；目标级控制采用产生式规则与过程推理完成对信息的实时监控。该系统以友好的人机交互界面为用户提供灵活方便的数据输入／输出窗口，以实时曲线滚动方式显示及以分等级的声光极警窗口为用户提供音频及视频监控信息。此系统可用于实时测井，能完成对     

测井实时控制专家系统

论述了专家系统在实时控制与模糊评判方面的应用.实时专家系统由元级控制和目标级控制组成.元级控制采用模糊知识,模糊推理及不精确推理完成模糊决策.模糊评判及对目标级控制的监控;目标级控制采用产生式规则与过程推理完成对信息的实时监控.该系统以友好的人机交互界面为用户提供灵活方便的数据输入/输出窗口.以实时曲线滚动方式显示及以分等级的声光极警窗口为用户提供音频及视频监控信息.此系统可用于实时测井.能完成对声感、双侧向、放射性、地层倾角四个系列测井曲线中有关速度、张力、深度、幅度、幅度变化率、井眼影响等项的实时监控及现场的综合评价.可避免测井事故及重大经济损失.     

基于WLAN的工程装备车辆作训远程监控系统

在分析当前工程装备车辆作业与训练监控现状的基础上,提出了利用改装工程装备车辆自有的传感与控制设备并加装视频监视与装备姿态探测设备后通过WLAN实现远程监控,WLAN技术的使用突破了监控的环境与人员限制,将数据分析、还原、存储、判断与报警交由程序实现,使监控更方便、可靠,同时为装备故障诊断与排除专家系统的引入做好扩展准备.     

基于模糊规则的网络性能分析系统

针对大型网络的性能难以通过现有的网络管理软件和网络性能分析监控软件进行分析和监控,而具有多协议、多层次、跨区域的大型广域网络的性能更是难以控制的问题,提出了一种采用模糊专家系统的网络系统性能分析方法,通过该方法,网络系统可以通过信息的传递做到性能指标的自动优化,动态控制网络的传输效果．     

用于物料贮运系统监控的专家系统

介绍了用于监控ＦＭＳ－５００物料贮运系统的专家系统，该系统由数据库、知识库、推理机和人－机界面等组成。知识库由一系列产生式规则组成，推理机采用正向搜索策略。该监控系统已成功地应用于南京某厂的ＦＭＳ－５００物料贮运系统中。     

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     

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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Brief Introduction to “Journal of Jilin University( Science Edition) ”

<正>"Journal of Jilin University(Science Edition)"is a comprehensive academic journal in the fields of science sponsored by Jilin University and administrated by the Ministry of Education of the Peoples Republic of China.The journal started publication in 1955.The original name at starting publication was"Journal of Natural Science of Northeast People University",which was changed into"Acta Scientiarum Naturalium Universitatis Jilinensis"in 1958 owing to the name change of the university.The present journal name has