80C196KB单片机与PC机的异步串行通讯方法的研究

采用MAX232芯片实现单片机80C196KB与PC机的串行通讯，给出了硬件连接电路，设计了串行通讯程序，实现了80C196KB单片机与PC机的串行通讯。实验表明，该串行通讯方法传输数据准确可靠，具有一定的应用价值。     

串行通讯在机器人内窥镜主动避障监控系统中的应用

该文结合内窥镜机器人主动避障控制系统的应用,介绍了VB的通讯控件MSComm的属性以及上、下位机串行通讯的通讯接口和通讯协议．详细分析了在VB环境下,通过PC与单片机的串行通讯,以监控机器人内窥镜在介人人体结肠过程中主动避障的实现方法和程序设计．     

MCS—51系列单片机串行通讯的实验研究

通过对单片机串行通讯的实验研究,运用典型实例分析全双工串行通讯的工作原理和程序设计,指出了ＭＣＳ－５１系列单片横串行通讯方式１、２、３的具体应用方法。     

主从分布式系统主单片机串行通讯管理的新方法

介绍在复杂的主从分布式系统中提高主机串行通讯与背景程序实时性的一种方法．该方法采用接力棒来管理串行通讯，使之与其他事件达到并行运行的效果．     

利用Visual C++6.0的MSComm控件实现计算机与变频器的串行通讯

本文介绍了利用Visual C 6.0的MSComm控件实现计算机与变频器之间串行通讯的硬件构成及程序设计方法,以此实现了计算机与变频器的串行通讯.     

提高串行通讯可靠性的策略分析

随着计算机技术的广泛应用,串行通讯也逐渐应用与计算机监控系统之中。提高串行通讯的可靠性和真实性变得至关重要。本文主要针对如何提高串行通讯的可靠性策略这一方面展开论述。     

利用VisualC++6.0的MSComm控件实现计算机与变频器的串行通讯

本文介绍了利用Visual C++6.0的MSComm控件实现计算机与变频器之问串行通讯的硬 件构成及程序设计方法,以此实现了计算机与变频器的串行通讯。     

ACS400变频器的串行通讯控制

介绍了ACS400变频器的串行通讯功能和Modbus通讯协议,以及在DeltaV系统中对其实现串行通讯控制的方法和软件编程.     

Windows CE.net的串口通讯类设计

主要介绍了基于Windows CE、net和S3C2410的串口通讯类设计思想。重点阐述了Windows CE．net下的串行通信函数、多线程编程和串口通讯类的具体设计。最后在S3C2410处理器上实现。开发的目的是实现嵌入式设备和其他终端之间快速稳定的串行通讯，并且易于移植到其他处理器中。     

基于串行通讯的PLC远程控制

为了实现在远方主站端对分布在不同变电站的低压开关柜进行远程控制。利用电力通信通道，扩展用于电力系统远程通信的CDT规约，使远程控制问题变成计算机串行通信问题．用串行通信技术方法，将远方主计算机的控制命令发送给变电站当地子站，子站计算机分析出主站命令，并转换成松下PLC通讯指令格式，用串行通信的指令系列代替PLC梯形图的编程，由子站直接控制PLC，实现对低压开关柜组的远程智能控制．通过现场调试和运行结果表明，利用电力系统数据传输通道，既不会影响高压系统的数据传输。又可以实现利用上位机的串行通信对PLC进行远程控制。解决了开关柜控制回路的远程智能控制问题，并给出了用串行通讯代替梯形图的编程方法及应用实例．     

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