基于C/S结构的商品交易系统的设计与实现

本文介绍了一个基于C/S结构、以Microsoft Visual C++ 6.0为开发平台的商品交易系统的设计与实现.该系统由VC++6.O开发程序界面、以SQL Server 2000数据库作为后台信息存储.本文在实践的基础上,详述了该系统的系统设计、程序开发、ADO访问数据库等关键技术.     

基于C/S结构的商品交易系统的设计与实现

本文介绍了一个基于C/S结构、以Microsoft Visual C++ 6.0为开发平台的商品交易系统的设计与实现.该系统由VC++6.O开发程序界面、以SQL Server 2000数据库作为后台信息存储.本文在实践的基础上,详述了该系统的系统设计、程序开发、ADO访问数据库等关键技术.     

一种基于C++Builder的过程控制系统设计与实现

详细介绍了一种以C+ +Builder为系统开发平台,利用Matlab作为数学分析、数据处理工具的过程控制系统的设计与实现.该系统不仅充分发挥了C+ +Builder在WIN32系统下快速开发应用程序的强大优势,而且充分利用了Matlab在开发控制算法上长处.这使得开发的工控系统在平台开放、易于扩充、二次开发能力上具有较大优势.     

C语言命令文件式参数绘图函数集

C语言被用来开发各种应用软件 ,参数绘图是开发起重机等专业机械CAD系统的关键技术 ,以命令文件作为接口来实现参数绘图具有简单、方便 ,与图形交换文件接口在形式上的一致性等优点 ,本文介绍了C语言参数绘图函数集的编制和使用方法     

基于ARM Linux嵌入式系统开发环境的快速构建方法

近年来,嵌入式系统广泛应用于移动智能、物联网、可穿戴计算等新兴领域.由于嵌入式系统开发环境与传统的PC开发环境相比,前者较为复杂.当前国内外尚无此类集成开发环境(IDE),本文以ARM S3C2440作为目标机,Linux 2.4以上版本作为嵌入式操作系统,快速构建嵌入式系统开发环境.最后,以一个LED字符设备驱动程序为例,对所构建的开发平台进行了测试.     

基于MATLAB扩展HL-2ADAS数据处理的两种方法及其比较

介绍了HL-2A DAS数据处理软件中，实现数据处理与图形功能扩展的两种方法．一种是以MATLAB作为主要平台，以C Builder作为接口工具实现数据的复杂处理与图像处理．另一种是用C Builder作为主要平台，调用MATLAB引擎实现数据与图像处理．这两种方法是以MATLAB为主要工具，从不同的角度入手，采用了不同的编程思想．分析了这两种程序开发策略在HL-2A DAS中的运用情况及性能比较．     

嵌入式实时操作系统下TCP/IP协议栈的设计

在以S3C44B0X为MCU的基础上,选择了免费、源码公开的μC/OS-Ⅱ实时操作系统作为开发的软件平台。研究了一种适用于嵌入式系统的TCP/IP协议栈LwIP,并将其移植到嵌入式系统中。在此基础上设计相关网卡驱动程序,经测试程序验证,LwIP协议栈在基于S3C44BOX的硬件平台和μC/OS-Ⅱ软件平台下运行良好,实现了嵌入式系统的网络化。     

基于Pro/Toolkit异步模式准双曲面齿轮参数化3D建模

以球面渐开线齿廓理论为基础,运用方程生成曲线方式完成三维模型的建立,以通用三维软件Pro/E中的Pro/Toolkit开发模块为接口,用Visual C++6.0作为开发语言进行二次开发,实现了格利森制准双曲面锥齿轮参数化三维建模的具体过程。采用异步模式实现Visual C++6.0与Pro/E无缝集成完成参数化设计,避免了相似结构给设计工作带来的重复性和繁琐性,极大提高设计效率,为正在发展的CAD提供了一个有效的途径和方法。     

人影弹药安全存储报警装置研制

为解决基层人影作业点弹药安全存储问题,笔者开发研制了人影弹药安全存储报警装置,系统以三星ARM9 32位嵌入式RISC CPU S3C2410A处理器为硬件核心,根据报警装置需要实现的功能,添加适当的外围电路,主程序以嵌入式LINUX2.6.28作为操作系统而开发的具有远程报警、数据、监控画面上传等功能的报警系统。     

Jaguar CTS三层体系应用开发研究

以Sybase EAServer框架下的Jaguar CTS作为中间件服务器,可以方便地开发出基于三层C/S结构的管理信息系统。本文以高等院校新生注册管理系统的设计、实现为背景,阐述了如何建立一个在客户端通过EAServer访问数据库的三层体系的应用。     

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

正~~     

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