嵌入式HTTP服务器的设计与实现

本文设计了基于μClinux的一种简单嵌入式HTTP服务器。并介绍了基于uClinux构架Web Server的主要原理和方法。     

智能家居远程控制系统的设计与实现

设计实现了基于Internet的智能家居远程控制和系统管理.该系统以S3C44B0X为核心处理器,外部扩展Flash、SDRAM及网络接口,通过定制的湿度、风速传感器采集环境数据,用步进电机、继电器和被控对象相连接来控制其运动.软件设计时将引导程序Bootloader及uClinux操作系统做移植,并采用Boa和CGI的方式在uClinux上构建了Web服务器,实现了基于嵌入式Web服务器的网站管理系统,用来接收用户请求、返回页面及调用相关子程序(采集、控制).     

基于NIOSⅡ的嵌入式Web网络构建

从嵌入式Web网络的总体设计、基于NIOSⅡ的嵌入式Web服务器设计及系统软件设计三个方面进行了阐述,提出了利用SOPC技术设计一种以嵌入式软核处理器(NIOSⅡ)为CPU,uClinux为操作系统的动态Web服务器,并将这种嵌入式的WEB服务器与网络相结合,构建嵌入式WEB网络。     

嵌入式操作系统uClinux内核的裁减和移植

该文介绍一些uClinux的基本概念和背景知识,并以uClinux移植到基于Samsung4510B微 控制器的Evaluator-7T评估板为例,在SkyEye的仿真环境下,讲述了对uClinux内核的裁减和定制。     

基于嵌入式系统的音频点播系统

介绍一种基于嵌入式系统的C/S结构音频点播系统，它将MP3音频文件集中存储在网络服务器上，利用自主开发的MP3播放终端进行网络点播，并重点介绍基于uClinux的嵌入式MP3播放终端的设计。这种音频点播系统可以广泛应用在卡拉OK厅、语音教室和公共广播等许多场所。      

水利水雨情自动化遥测系统的应用

在水利的防汛工作中,实时掌握及时的水雨情信息是非常必要的。如果采用传统的方法,无论在精度上,还是在时间上,都很难满足防汛的要求。水雨情自动化遥测系统提供了一个科学、准确、及时的平台,随时查询各个时间段的水雨情信息,为科学调度洪水提供了依据。     

S3C44BOX的数据采集设备驱动的研究与实现

S3CA4BOX作为一款以ARMTTDM1为内核的微处理器,得到广泛的应用,uClinux作为一种运行于没有MMU的嵌入式微处理器的操作系统,也广泛应用到嵌入式开发中.本文首先分析了S3C44BOX的ADC转换器的特点,详细分析了uClinux的设备驱动机制,并论述uClinux的设备驱动的处理过程,应用实例介绍了基于S3CA4BOX的ADC转换器的设备驱动程序,以及在uClinux下静态加载设备驱动程序的过程.     

大型水利工程水雨情管理信息系统设计方案

大型水利工程建设中，对流域的水雨情预报和报告，是工程建设必须解决好的问题。根据我国的实际情况，结合目前各地区计算机的使用情况，以及参加水雨情管理信息系统的设计工作经验。本文系统地提出了一般大型水利工程的水雨情管理信息系统的设计方案。     

基于嵌入式系统的音频点播系统

介绍一种基于嵌入式系统的C／S结构音频点播系统，它将MP3音频文件集中存储在网络服务器上，利用自主开发的MP3播放终端进行网络点播，并重点介绍基于uClinux的嵌入式MP3播放终端的设计。这种音频点播系统可以广泛应用在卡拉OK厅、语音教室和公共广播等许多场所。     

基于ARM嵌入式Web服务器的研究

本文提出了一种新的嵌入式Web服务器设计方案,讨论了其具体技术及实现,在32位ARM核的微处理器S3C4510B的硬件平台上结合嵌入式实时操作系统uClinux,完成了系统的硬件设计及软件实现,最后构建了一个高性能、低功耗、可靠性高的嵌入式Web服务器。     

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

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