基于ARM_Linux嵌入式系统Web服务器的研究与设计

介绍了基于S3C2410处理器嵌入式Web服务器的硬件电路和软件设计,给出了嵌入式Linux操作系统下Web服务器的实现方法,通过通用网关接口CGI,成功实现了动态网络服务.     

嵌入式Linux系统在S3C2410上的移植实现

首先对嵌入式Linux操作系统内核和S3C2410处理器进行了简单介绍,在此基础上,对系统引导程序进行了设计,重点介绍了将Linux移植到S3C2410处理器的步骤和方法,并对移植过程的关键部分进行了详细阐述。编译生成的内核在嵌入式系统中运行稳定,结果证明方法可行,对于开发其它嵌入式系统具有参考意义。     

ARM与嵌入式Linux平台下SPP设计及驱动移植

为了拓展并口在专用嵌入式系统中的应用,针对以ARM9 CPU和嵌入式Linux为平台的嵌入式系统的特点,设计开发了SPP(Standard Parallel Port)标准并口接口平台.通过硬件设计及仿真验证,实现了S3C2410A与并口的硬件接口电路连接.同时对并口驱动设备栈层次进行了分析,对并口lp上层驱动进行了移植,并开发了parport下层驱动程序,实现了以ARM9 S3C2410A和嵌入式Linux为平台的打印模块.     

基于S3C2410的串口设计及其在Linux下编程

结合设计出来的S3C2410的串口通信电路，介绍了嵌入式系统在Linux下进行串口通信程序的开发，实现了嵌入式系统和PC机的串口通信。该程序利用Linux系统调用，开发简单、可移植性强、有利于大型程序的开发。     

ARM芯片S3C2410触摸屏驱动的研究与开发

介绍了ARM芯片S3C2410触摸屏驱动程序的研究与开发,其中包括四线电阻式触摸屏工作原理,S3C2410触摸屏控制器的工作模式和Linux操作系统下基于ARM芯片S3C2410触摸屏驱动程序的开发。由于系统体积小、性能好、价格便宜而应用于基于ARM核的嵌入式早期故障预示仪器系统中,在大型旋转机械的故障诊断、趋势预测中发挥积极作用。     

CAN总线接口扩展设计在ARM上的实现

随着先进制造技术的数字化、网络化、智能化,现场总线技术和嵌入式技术相结合必将对制造业产生深远的影响。本文以S3C2410为微处理器,通过SPI总线接口扩展CAN总线,实现S3C2410与CAN控制器之间的通信,并在Linux操作系统下对CAN驱动进行了开发。通过实验验证方案的可行性。本设计电路实现了嵌入式技术和现场总线技术相结合,对制造业生产控制的网络化有积极的推动作用。     

基于ARM9和嵌入式Linux的串口驱动开发

介绍了嵌入式Linux下驱动开发的一般模式,并基于微处理器芯片S3C2410,详细分析了串口驱动的开发方法,给出了设计实例,对嵌入式系统的研究和开发有一定的借鉴意义.     

S3C2410嵌入式系统多串口通讯设计

介绍一种不用开发设备驱动程序,直接访问S3C2410嵌入式系统I/O端口寄存器的方法,实现多串口通讯。详细阐述了基于WindowsCE的S3C2410嵌入式系统多串口通讯的实现过程,给出了部分源代码,解决了开发复杂设备驱动程序难度大、周期长的问题。方法简捷实用,数据通讯稳定可靠,已在工程实践中得到应用,可以直接移植到同类系统中。     

基于K9F2808的文件系统的移植与实现方法

本文讨论了基于ARM920T的嵌入式文件系统mC/FS的NAND Flash移植和实现方法。在嵌入式系统硬件平台S3C2410AL-20下,设计了外部存储器接口BANK3的扩展NAND Flash电路,以及实现NAND Flash的移植,实践证明文件系统mC/FS性能稳定、可靠、移植方便以及接口程序简单。     

基于S3C2410的嵌入式图像采集系统的设计

嵌入式图像采集系统具有体积小、成本低、可靠性高等优点,特别适合各种便携式终端产品,本文介绍了一种基于嵌入式Linul操作系统和S3C2410处理器平台的嵌入式图像采集系统．给出的原理和设计方案．详细介绍了在Linux操作系统下USB摄像头驱动的开发流程和方法。     

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.     

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.     

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.     

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.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

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.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

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。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.     

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.