基于SPCE061A的霓虹彩灯控制系统

介绍了以凌阳单片机为核心的新型霓虹彩灯控制系统.以带有数据处理功能的μ'nSPTM16位微处理芯片的SPCE061A单片机作为控制核心,以故障检测、显示电路、模拟灯塔控制电路、模拟地灯控制电路、咖啡屋名字的LED数码管显示及语音的录入和输出等为控制对象,设计并制作了单片机的接口电路和外围硬件电路,通过程序控制单片机发出脉冲的频率,从而控制不同线路上霓虹彩灯的亮灭闪烁.与普通LED彩灯相比,具有控制集中、操作简单、易于修改等优点.该设计实现了霓虹彩灯实时控制的管理问题,符合实际生活需要,具有一定的推广性.     

基于AT89C51单片机LED彩灯控制器设计

介绍了一种新型的LED彩灯控制系统的设计方法,以AT89C51单片机作为主控核心,与按键、显示器等较少的辅助硬件电路相结合,用软件实现对LED彩灯进行控制。本系统具有体积小、硬件少、电路结构简单及容易操作等优点。     

基于CPLD的音乐LED彩灯控制系统

文章介绍了一种音乐LED彩灯控制系统,系统由软件与硬件两部分组成,硬件部分由CPLD EPM1270、LED彩灯控制电路、数码显示电路、按键电路和扬声器电路组成,LED彩灯控制芯片为CD4017.软件部分由音乐产生及控制模块及数码显示模块组成.CPLD产生的不同音乐节拍可以使能不同的CD4017芯片,使组成某种图案的不同颜色彩灯随音乐节拍闪烁,具有很好的观赏性.系统具有硬件电路简单、体积小、功耗低、可靠性高,特别是可以在不修改硬件电路的基础上,仅通过更改软件就可变换LED彩灯的显示花样.     

单片机遥控防盗报警系统

介绍了以 89C51单片机为核心的遥控防盗报警系统。该系统主要由红外遥控发射器和 89C51单片机控制的红外接收电路、显示电路以及报警输入检测电路、输出控制电路构成。系统具有设计简单、成本低廉、可靠性高的特点。     

单片机遥控防盗报警系统

介绍了以89C51单片机为核心的遥控防盗报警系统。该系统主要由红外遥控发射器和89C51单片机控制的红外接收电路,显示电路以及报警输入检测电路、输出控制电路构成。系统具有设计简单、成本低廉、可靠性高的特点。     

基于AT89S52单片机的室内音乐喷泉设计

音乐喷泉作为一种观赏性较高的艺术水景已经得到了越来越广泛的应用。论述了一个以AT89S52单片机为核心的适于室内使用的小型移动式音乐喷泉控制系统,给出了单片机控制电路,水泵控制电路,彩灯控制电路及A/D转换程序。喷泉水型随音乐的高低旋律发生变化,再辅以LED彩灯的亮灭,实用性强,适宜家庭和室内观赏。     

基于Proteus和Keil的花样流水灯控制电路的设计与仿真

在Proteus仿真软件与Keil编程软件的基础上设计了基于AT89C51单片机为控制核心的八位LED花样流水灯的控制电路。最终通过硬件电路的仿真,验证了电路设计的正确性,整个电路的设计过程,实现了将Proteus与Keil的完美结合,为单片机控制电路的设计提供了一种设计思想。     

基于STC89C54RD+单片机的点阵LED显示屏的设计

以单片机系统组成的点阵LED显示屏开发过程.系统采用上-下位机的结构构建,上位机PC可通过串行通信接口实现对下位机LED显示系统显示参数的设定.下位机以LED屏的显示电路和单片机控制电路为核心,实现点阵LED屏以多样化的方式显示各种信息的功能,同时可实现本地温度采集、显示和本地时间实时显示的功能.     

基于单片机的恒温电锅炉控制系统

本设计的温度测量及加热控制是以AT89S52单片机为核心部件的,外加温度采集电路、键盘及显示电路、加热控制电路、漏电检测和超温报警等电路。采用单总线型数字式温度传感器DS18B20,及行列式键盘和动态显示LED方式,温度控制采用固态继电器作为加热控制器件。系统具有结构简单、价格低廉、测量精度高、量程宽、功耗低等特点,具有一定的实用性和较高的社会推广价值。     

基于声音的动感LED灯

基于声音的动感LED灯光具有简单便捷的展现方式与炫彩的灯光展效果,给人们带来独特的视觉感受。该文以STC89C52单片机设计声音动感LED灯,设计了两种根据声音的大小变化而改变LED彩灯的方案,通过音频信号线采集外部音源播放音乐的声音,采集后通过适当放大音频信号使信号更容易和准确地传输,最后将采集到的声音模拟量转变为可识别的数字信号传输到单片机中处理,由单片机识别数字信号从而通过P口控制输出端的LED彩灯,实现了随声而动的LED彩灯效果。     

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