Win9x下微机和单片机间串行通信查询方式的实现方法

提出了在Ｗｉｎ９ｘ操作系统下对串行端口直接操作来实现通信的方法。用自定义类方便地解决了ＤＯＳ下串行通信程序移植到Ｗｉｎｄｏｗｓ平台上的问题,并给出了用ＶＣ＾＋＋６．０编写的部分串行通信程序源代码。     

ActiveX通信类的制作

介绍如何利用Ｖｉｓｕａｌ Ｂａｓｉｃ５．０制作高效的ＡｃｔｉｖｅＸ串口通信类。该通讯类功能强大，具有兼容ＭＯ－ＤＥＭ和ＲＳ２３２通信接口，灵活设置串行端口，拨号电话，数据位，效验２位，停止位等特点，还可以随时间类分布命令，访问类的通信状态。该类在数据传送及各类设备监控中有广泛的应用。     

用DOS命令连接两台计算机共享磁盘和打印机

介绍了ＤＯＳ命令ＩＮＴＥＲＬＮＫ．ＥＸＥ和ＩＮＴＥＲＳＶＥ．ＥＸＥ的用法，以及串行和并行电缆的制做方法，举例说明在计算机之间实现磁盘和打印机的共享。     

采用MAX232实现MCS—51单片机与PC机的通信

介绍了ＭＡＸ２３２芯片的使用,采用ＭＡＸ２３２接口的通信电路,以及ＭＣＳ－５１单片机与ＰＣ机的点对点串行通信程序设计。     

试用C语言编写串行通信接口程序

说明了异步串行通信(RS-232)的工作方式,探讨了查询和中断两种软件接口利弊,采用直接访问串行口硬件端口地址的方式,用C语言编写了串行通信查询和中断两种方式的接口程序.     

CRC校验在PC机异步串行通信中的应用

介绍了将ＣＲＣ校验用在ＰＣ机异步串行通信中的方法，实验表明，通信数据可靠性明显提高．     

VC＋＋6．0实现串口通讯

研究在Visual C＋＋6．0环境下实现在异步串行通信（RS-232）的工作方式下的串行通信的编程方法用串口编程控件MSComm对所接收的数据进行接收实例程序。     

稀土盐在酯化反应中的催化作用分析

结合稀土盐在乙二醇单乙酸醋酸酯合成反应中的催化特性和反应的动力学行为，利用Ｘ—射线衍射（ＸＲＤ）。程序升温分解（ＴＰＤＥ），程序升温脱附（ＴＰＤ）等手段，对稀土盐催化剂的结构特征进行了系统的研究，将所得结果与催化反应动力学规律相关联，对稀土盐在酯化反应中的催化作用进行了分析。     

改进型甲醇合成催化剂NC208的低氢活化过程

采用ＴＰＲ、ＤＴＡ和ＸＲＤ等谱学方法，研究改进型铜基甲醇合成催化剂ＮＣ２０８的低氢活化过程和升温还原程序．低氢升温还原程序在甲醇厂成功应用并获得较高甲醇产量．     

基于VC++MSComm控件的串行通信

在介绍Windows 2000/NT平台下串行通信机理的基础上，讨论了基于VC^ MSComm控件进行串行通信的方法。通过VC^ MSComm控件为串行数据通信提供的各种协议，以及使用该控件事件驱动方式，处理和解决了通信软件的开发设计问题，方便而快捷地实现了串行通信功能。最后通过实验对程序进行了调试。     

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.     

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     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

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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