基于嵌入式Linux的QT键盘设计与实现

本文以smdk2410开发板为硬件平台,嵌入式Linux为软件平台,阐述了如何通过修改QT库源代码和添加键盘驱动模块,将QT图形界面系统移植到嵌入式Linux平台上,并使该QT图形界面可以响应键盘输入．     

基于ARM+GPS+GSM的智能电子导游系统的设计与实现

基于嵌入式技术、通信技术和计算机技术研究和设计了智能电子导游系统.该系统选取ARM9-2410开发板和嵌入式Linux操作系统为载体,制作了MapInfo数据格式的电子地图,利用QT设计了图形界面.除了实现景点解说、图片展示、景点查询和路线优化等功能,还实现了团队游客彼此定位和通信的功能,解决了团队游客走散或走失问题.此外,还设计了基于单片机STC12C5A60S2的低端系统,和该ARM系统构成了高低端搭配.最后以中央民族大学校园地图为例,验证了该系统的稳定性和可操作性.     

基于提花大圆机的花型数据转换与图形界面的研究

以ARM为硬件开发平台,针对针织提花大圆机选针器控制系统花型数据转换功能的研究.以QT平台下实现花型图形界面的设计,实现花型数据转换功能可视化操作,为已有的提花选针控制的移植工作奠定基础.     

基于ARM的水下目标定位系统的通信模拟系统设计

水下目标定位系统被广泛应用于水下目标的定位和跟踪、水声对抗等水声领域,其系统主要由水声浮标阵、中继站和基站等构成,浮标与基站的通信通过无线网桥进行传输。为了提高该系统的通信可靠性和智能性,采用ARM板作为中继站和通信服务器,以一台电脑作为基站的显控机,一台电脑模拟浮标,设计了一种水下目标定位系统通信模拟系统,其中ARM板搭载LINUX嵌入式系统。该模拟系统可以实现基站和浮标之间的中继通信,完成从基站显控端发送各种命令和参数到ARM板,ARM板进行中继转发给浮标,浮标收到命令后进行响应,并回传相关数据至基站显控端的功能。     

基于STM32嵌入式系统的uCGUI移植与实现

uCGUI是一种小型的嵌入式图形界面接口,其系统要求低,独立于CPU和LCD控制器,提供窗口控件和绘图函数。介绍了uCGUI嵌入式图形界面接口的特点和结构,分析了uCGUI接口移植的要求,以基于STM32 ARM处理器的嵌入式系统为例,详细分析了移植的过程和步骤,实现了uCGUI在该系统上的移植,给出了实例代码。     

一种基于linux的电力载波智能家居联网系统

针对智能家居系统联网成本高、实施困难等问题,提出一种低成本、实施方便的智能家居联网系统,采用电力载波、以太网分层网络,核心网关/HMI采用S3C6410 ARM11处理器,移植linux操作系统,内嵌Boa服务器和CGI程序,用户可通过internet远程服务智能家居设备;本地UI界面采用QT设计,交互性好。     

基于32bit Cortex-M3内核的高校嵌入式实验装置

本文介绍一种用于高校嵌入式教学的新型实验装置系统,采用先进ARM Cortex-M3内核,配合彩色TFT、GSM短信等多种外围设备,能够让学生自主设计多种趣味实验,包括图形界面交互、数字音频、网络化温度测量等。通过充分调动学生的兴趣爱好和主观能动性,更好地发挥学生的创新能力,同时有效改进实验教学效果。     

基于ARM-Linux的触摸屏驱动及其应用研究

本文介绍了一种基于ARM-Linux的触摸屏驱动程序,并结合miniGUI图形界面系统完成触摸屏与用户间的图形交互工作,为移动应用提供便捷的图形化支持方案。该系统以32位ARM微处理器为硬件核心,嵌入式ARM-Linux系统为软件核心。同时,讨论了触摸屏驱动的移植与miniGUI的接口及图形界面的应用。     

基于ARM9微处理器的嵌入式手持无线点菜系统的设计

针对现有点菜系统实时性和移动性差的问题,设计了一个基于ARM9S3C2440的新型嵌入式手持无线点菜系统.该系统在S3C2440内核基础上实现了μC/OSⅡ操作系统的移植,在图形构建软件μC/GUI下构建了整个系统的图形界面,根据设计需求实现了对点菜系统的程序功能.测试结果表明:在实时性和测试距离上效果良好,达到了应用指标.该设计对提高餐饮企业的服务质量,降低费用有积极的推动作用.     

基于S3C2440A的振动信号采集分析系统的硬件设计

针对传统MCS-51单片机数采分析系统稳定性和实时性差的问题,提出一种基于S3C2440A和嵌入式Linux操作系统的机械设备振动信号采集分析系统的设计方案．重点阐述了系统硬件结构中的ARM主控模块、信号预处理模块和数据采集模块的设计,并对软件设计进行讨论．经实验验证表明：该系统完全能够满足实时性要求,稳定性良好,可靠性较高．     

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