传统污水处理创新分析

在LabVIEW平台上开发的活性污泥法污水处理虚拟设备,以反应动力学为基础构造基本模块,虚拟设备采用循环结构,迭代运行,能解决具有交互作用的多控制底物问题.虚拟设备的控制界面模拟传统的控制仪表,仿真运行,其工艺、环境和设备参数可直接选择,节约了试验研究的时间和经费,提高了设计的可靠性,也能在已建成的水处理设施上进行控制和预报.     

半导体制造过程的多工序协同控制模型

针对半导体制造过程的多工序质量控制,提出一种协同控制模型.该模型由目标优化、设备选择和设备控制3层组成.目标优化层利用目标优化模型对下游关键工序参数的目标值进行优化,补偿上游工序偏差对产品质量特征的影响;设备选择层综合考虑设备性能、生产时间以及设备的可利用性,选择处于最佳状态的设备完成相应的工序操作;设备控制层对选定的设备进行Run-to-Run控制,降低产品批次间的差异.从某半导体制造车间采集多道关键工序的测试数据,建立协同控制模型.通过基于生产数据的仿真,证实协同控制模型能够改善产品质量,提高设备效能和生产效率.     

一种新型海洋腐蚀模拟设备的设计

为了实现在实验室模拟海腐蚀而设计了一种新型海洋腐蚀模拟设备.本设备分为温度、潮差控制和造波三大系统,模拟海洋腐蚀中温度,干湿交替,浪花飞溅三大主要影响因素.本设备可实现自动化控制,结构简单,造价低,腐蚀结果与实海腐蚀相关性好.本设备可以为海洋腐蚀机理研究和耐腐蚀材料的开发提供设备支持.     

渗流电模拟测试设备自动化的设计

本文叙述了使用单板机控制一台三向电模拟渗流模型的测试设备.它可以对多个参量和多点进行测试、打印、贮存,同时可控制四台步进电机对测针进行定位操作.该设备较虎设备有较大的改进.     

SmartNet网络中通用通讯协议的设计与实现

目前家庭控制设备种类繁多,无线控制设备信号格式也各不相同,无法统一控制家庭设备.为了提高生活质量,降低设备成本,设计开发网络家电监控系统SmartNet,在SmartNet系统中设计通用的通讯协议,规定了控制字符串的格式,驱动解析构架,网络管理等,为不同协议设备提供统一管理.通过实验实现网络协议的设计,验证了统一协议接口的合理性.     

农场异构设备物联网数据接入控制机制研究

研究并比较了异构数据问题的解决方案,提出了农场异构设备物联网混合分布式解决方案.建立了农场异构设备物联网模型,设置了农场应用场景,优化并改进了封锁和集中式FOCC控制机制,解决了对设备并发管理和控制时所带来的一致性问题.实验结果表明,封锁和集中式FOCC机制是有效的,但在一定情况下会增加系统时间开销.     

提高港口机械设备质量控制的措施探究

港口机械设备质量的好坏,直接影响港口正常的营运,甚至产生严重的质量事故.本文首先阐述了港口机械设备质量的特点,并在此基础之上,阐述了提高港口机械设备质量控制的措施.本文旨在强化对港口机械设备质量控制的认识,并为今后相关领域的研究提供一定的参考资料.     

多媒体教学设备综合控制系统的设计与实现

设计了一种以计算机为中心的综合视频、音频和通信等领域的多媒体教学设备的自动监控系统.本系统以AT89C52为控制核心,实现了电源的管理,对台式计算机、笔记本电脑、展台与投影机等设备之间通信的切换以及对监控设备和电动幕布的控制.本系统现已成功投入使用,并且运行效果良好.     

大型原料场流程及控制生成系统

介绍了大型原料场流程控制系统开发的现状和本系统采用的一种新方法,本系统采用C#语言开发,实现了根据工艺流程填写设备表,自动生成流程表和流程设备选择表,最后利用生成的数据表和标准STL语法编写PLC流程控制程序源代码,该源代码经编译后可直接用于流程控制.本系统大大推进了大型原料场流程控制程序的规范化和标准化.     

超大型混凝土设备基础裂缝控制

本文通过超大型混凝土设备基础的施工实例,论述了在混凝土裂缝控制中,由理论根据施工具体情况,从设计、材料、施工各个环节制定控制目标和控制方法,从而成功的控制了超大型混凝土设备基础裂缝的产生.     

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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