FMS—AGV传输系统自学习调度方法

针对ＦＭＳ－ＡＧＶ传输系统调度的不确定性因素,对ＡＧＶ在线运行状态参数实时记录并学习,运用动态规划算法和模糊数学的方法,提出了模糊动态规划（ＦＤＰ）算法．给出了适于计算的迭代算式,结合人工智能（ＡＩ）编制了ＡＧＶ传输系统调度软件包．本算法利用在线记录的ＡＧＶ运行数据进行模糊处理和学习,有效地调节用于描述ＦＤＰ算法的模糊模型参数．这种自学习ＦＤＰ算法在ＡＧＶ的路径规划中有较好的适应性．对于一个新的ＦＭＳ－ＡＧＶ系统,经几次规划自学习之后,该算法就能很好地用于系统的实时调度中．     

PVDF压电薄膜的应用进展

ＰＶＤＦ（Ｐｏｌｙｖｉｎｙｌｉｄｅｎｅ ｆｌｕｏｒｉｄｅ,聚偏氟乙烯）压电材料具有独特的热电效应和压电效应,是一种新型的高分子多功能材料。ＰＶＤＦ压电薄膜由于制作成本低、容易加工和处理、重量轻、机械性能好等优点,在诸多领域的应用受到人们的广泛关注。本文从力和输出的关系、温度与输出电压的关系以及动态响应关系三个方面,综述了ＰＶＤＦ压电薄膜的机械、公路交通、建筑、医学、航空航海等方面的最新进展,并分析     

TNFα在登革病毒感染发病机制中作用的实验研究

以正常人和脐带血人单核细胞作为登革Ⅱ型病毒（Ｄ２Ｖ）感染的靶细胞，研究了肿瘤坏死因子α（ＴＮＦα）对Ｄ２Ｖ复制的影响以及人单核细胞感染Ｄ２Ｖ后ＴＮＦα产生能力的变化，动态观察了６６例登革感染病人不同发病天数血清中ＴＮＦα水平．结果表明ＴＮＦα能增加Ｄ２Ｖ的复制（Ｐ＜０．０５），高剂量Ｄ２Ｖ（１００ｐｆｕ／ｃｅｌ）感染能引起人单核细胞产生ＴＮＦα，病人血清中ＴＮＦα水平明显升高（Ｐ＜０．０５）．结果提示ＴＮＦα促进登革病毒感染．     

PVDF压电薄膜的应用进展

Ｐ Ｖ Ｄ Ｆ（ Ｐｏｌｙｖｉｎｙｌｉｄｅｎｅ ｆｌｕｏｒｉｄｅ , 聚偏氟乙烯） 压电材料具有独特的热电效应和压电效应,是一种新型的高分子多功能材料 Ｐ Ｖ Ｄ Ｆ 压电薄膜由于制作成本低、容易加工和处理、重量轻、机械性能好等优点,在诸多领域的应用受到人们的广泛关注本文从力和输出的关系、温度与输出电压的关系以及动态响应关系三个方面,综述了 Ｐ Ｖ Ｄ Ｆ 压电薄膜在机械、公路交通、建筑、医学、航空航海等方面的最新进展,并分析了压电薄膜的应用前景和存在缺陷     

一种固体介质中空间电荷分布测量的新方法

压电压力波法是用聚偏氟乙烯（ＰＶＤＦ）压电膜产生压力波来测量固体介质中空间电荷分布的一种新方法,介绍了用压电膜产生压力脉冲波的原理与方法以及压力法测量固体介质中空间电荷分布的原理,实验结果表明这种测量方法能很好地用于固体介质中空间电荷分布特性的测量。     

基于TGA—FTIR联用技术的PVC热解研究

用ＴＧＡ－ＦＴＩＲ联用的方式进行了ＰＶＣ在空气条件下的热解实验,分别用ＤＤＴＧ曲线与ＦＴＩＲ的红外三维图、Ｇｒａｍ－Ｓｃｈｍｉｄｔ（ＧＧＳ）曲线等描述了ＰＶＣ两个阶段的热解行为,对比了ＤＤＴＧ曲线与ＧＧＳ曲线中峰的位置以及峰的起始时间、终止时间、峰宽等参数,结果表明,ＴＧＡ与ＦＴＩＲ联用时,ＦＴＩＲ的检测无明显的滞后,及返混等情况发生。     

压电薄膜压力分布计算机测试系统研究

提出一种新型的压电薄膜（ＰＶＤＦ）压力分布计算机测试系统,它包括多点压电薄膜传感器,多点电荷放大装置,计算机采集处理系统。该系统可以实现全场、实时测量,其动态范围可达０．１Ｈｚ～５００Ｈｚ。采用微机输出具有独特的图象动画显示,使测量结果更为直观。文中叙述了系统的工作原理以及实验测试,测试结果证实了系统的动态压力分布测量能力。本系统的研制为动态接触问题的研究及振动测试开发了新的研究工具。     

FoxBASE+中调用外部大型程序一法

将用于启动系统的ＣＯＭＭＡＮＤ．ＣＯＭ程序拷贝到ＦｏｘＢＡＳＥ＋（或ＤＯＳ能找到的）目录中，并更名为ＦｏｘＶＩＥＷ．ＣＯＭ．在ＦｏｘＢＡＳＥ＋中用下面的格式调用：ＦｏｘＶＩＥＷ／Ｃ，外部程序．利用这种方法比利用ＦｏｘＳＷＡＰ．ＣＯＭ能多提供１８Ｋ左右的常规内存给外部程序或命令．     

POSFET压电传感器结构参数与特性的研究

本文分析了ＰＯＳＦＥＴ压电传感器的结构参数与特性。理论分析表明ＰＶＤＦ薄膜的声学灵敏度与膜的厚度和膜的弹性刚性系数成正比。实验结果显示，ＰＯＳＦＥＴ传感器的输出峰值随扩展栅面积的增加而增大，随沟道长度的减小而增大。ＰＯＳＦＥＴ传感器的灵敏度比之ＰＶＤＦ直接粘贴硅背衬传感结构提高了２０ｄＢ。     

基于 Client/Server 工艺数据管理

提出了一种基于ＶｉｓｕａｌＦｏｘＰｒｏ３．０客户／服务器的工艺数据管理方法，论述了利用ＶＦＰ３．０最新的数据库技术对工艺数据进行组织、管理，以及利用事务处理机制实现工艺数据安全恢复等方面的关键技术．介绍了工艺数据库管理系统（ＰＤＢＭＳ）的系统结构．     

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