单片机语言纯软件仿真系统研究及实现

介绍一种不需要附加硬件，在计算机上能直接仿真和分析单片机程序执行的系统实现方法，同时以６５０２ＣＰＵ的程序仿真系统的实现给出具体的实例，从而可以使仿真软件系统满足用户的各种特殊需求，实现脱离硬件环境和开发系统直接对用户程序进行调试和仿真。     

矿井运输系统动态仿真软件的研究

采用计算机仿真的方法来模拟整个矿井运输系统的运行情况，从而确定系统煤仓容量和系统的有效率。在软件中，实现了系统状态变化的老太太显示，提高了矿井运输系统仿真的直观性。     

柴油机高压共轨供油系统硬件在环仿真的设计

在对柴油机高压共轨电控供油系统进行分析的基础上，设计了硬件在环仿真系统．仿真系统的设计包括方案设计、硬件设计、软件设计、通信系统设计、发动机仿真模型的建立等．由于采用了CAN通信协议，系统的输入和输出全部可从PC机上得出，在减少设计成本的同时，提高了系统的灵活性．柴油机高压共轨电控供油系统的开发过程表明，运用硬件在环仿真系统进行硬件和软件的开发和测试，节约了开发成本，缩短了开发周期．     

过程仿具培训操作工操作成绩自动评定系统

开发了过程仿真培训操作工程作成绩自动评定系统。该系统主要有：操作工操作的自动跟踪，操作成绩的评定和评分标准三部分构成。较详细地说明了该系统的实现方法。本系统的特点是成绩 分类培训实际，综合全面；程序与评分标准相分离，便于实现软件的通用化，易扩充和易维护等。     

水力发电机组调速系统大扰动仿真

提出了水力发电机组调速系统大扰动仿真的简化模型，其仿真结果与现场实录的大扰动响应波形规律相似，数值接近，结论一致，用于水电机组调速系统的各种仿真研究，大大减少仿真费用和现场试验中的困难摸索。     

混凝土斜拉桥施工系统仿真理论与应用

斜拉桥施工过程的仿真分析随着桥梁建设的发展显得日益重要，为此，利用面向对象的复杂工程系统可视化仿真建模方法，将系统仿真技术和三维动画演示技术应用于桥梁施工仿真领域。针对某斜拉桥施工特点，阐述了系统仿真建模思想，同时结合循环网络模型概念，以VC＋＋作为仿真平台，设计编制了桥梁施工仿真软件（BSAS）。研究成果在某斜拉桥工程施工组织研究中得到成功应用，验证了大型桥梁三维动态可视化仿真技术在斜拉桥施工优化分析方面的可行性和优越性。     

空调系统动态仿真

分别对空调系统中压缩机、毛细管建立稳态模型，冷凝器和蒸发器建立动态模型。并通过系统质量守恒作为系统收敛判据，建立系统仿真模型。针对某空调器进行动态仿真，与实验值在合理范围之内。     

生产系统的SLAMⅡ语言仿真

该文介绍了广泛使用的ＳＬＡＭ仿真语言及其建模框架，并通过用ＳＬＡＭⅡ仿真一个实际的生产系统的例子，给出了相应的网络模型和仿真结果分析，指出使用ＳＬＡＭ语言仿真生产系统具有周期短，使用方便、工作效率高等优点。     

现代军用仿真系统的新特点及技术对策

军用仿真技术是系统仿真应用领域的一个重要分支，也是军事和国防建设必不可少的重要支撑技术，该文综述了国内外军用仿真技术的发展概况和现代军用仿真技术的发展趋势，并以综合仿真系统为例，介绍了现代军用仿真系统的新特点及技术对策。     

VHDL仿真中离散事件仿真核的设计和应用

首先用面向对象的方法设计了一个离散事件仿真核，然后将该仿真核应用于VHDL仿真中．由于对离散事件系统进行了合理的抽象以及仿真核提供了简便的编程接口，所以降低了VHDL仿真系统建模的复杂性，并使得VHDL仿真系统具有良好的可维护性和可扩展性．该仿真核还可以应用到其它的离散事件系统仿真场合．     

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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