基于DOM的数据转换技术及案例研究

着重介绍用DOM解析XML文件,并在浏览器中呈现其解析结果.之后具体描述一个电子商务典型案例,即用DOM解析XML商品信息文件并对其修改,然后用XML样式表语言模板XSLT(XML Stylesheet Language Template)将其呈现在浏览器中,同时给出关键代码.该文可以使DOM程序员能够对使用DOM处理XML文件的方法有一个直观的认识,并能够深入了解DOM各接口的使用方法,从而为更深一步学习DOM在其他领域的应用打下基础.     

基于DOM的XML解析技术在构件描述中的应用

在Visual C#中,解析器可将代码中的扩展标记语言(eXtensible Markup Language,XML)注释处理为外部XML文档。文档对象模型(Document Object Model,DOM)定义了一个独立于平台和语言的标准接口,应用程序通过它访问和修改XML文档数据。介绍了DOM的特点和功能,并在ASP.NET平台下通过封装的DOM类库解析和存取XML文档,完成了对XML文档数据提取,将解析出的数据导入数据库作为构件描述信息的应用实例。     

Delphi处理XML文档的方法

XML已成为表示结构化和半结构化数据的标准格式；DOM规范是应用程序和XML文档之间的桥梁，它提供了一种标准的方法来操作存储在XML文档中的信息。首先介绍W3C提出的DOM规范以及Delphi对该规范的三种实现方法，然后给出了在用Delphi开发的一个通用OLAP工具-KDOLAP中XML文档的处理方法。     

用C++语言实现XML文件解析的一种方案

近年来,可扩充标记语言(XML)技术的应用越来越广泛,实现XML文件解析的方式也是多种多样.文章参照万维网联盟(W3C)定义的文档对象模型(DOM)标准接口文档,介绍了一种在标准C 语言的基础上实现DOM接口的方案,该方案不仅达到了用DOM接口的方式解析XML文件的目的,还避免了一些常用的XML解析器存在的解析速度慢的问题.     

XML解析技术及数据传输分析

文章分析了XML解析和数据传输技术,对比介绍了XML两种经典解析技术DOM和SAX的特点及应用场景,分析了XMLRPC、SOAP和MOM3种常见支持XML格式消息传输技术的技术方案。     

基于StAX中事件迭代器API的XML数据解析技术研究

当今许多企业多数使用DOM(文档对象模型)和SAX(XML的简单API)处理XML数据。DOM的主要缺点是在XML文档被导航之前必须在内存里建立其完整的树形结构。为此,处理XML大文档需要消耗大量内存。而SAX的主要缺点在于应用程序被动地接收解析器生成的事件,因此不能通过导航随意浏览和修改XML文档的指定部分。Java EE 5新推出的StAX(Streaming API for XML,XML流式API)很好地解决了上述问题。StAX既有SAX的效率,又有DOM强大的功能。介绍StAX这种最新XML数据解析技术的开发背景,分析其解析机理和技术内涵,并在此基础之上给出一个使用基于事件迭代器的API集合解析XML文件的应用示例。实际操作表明StAX为流式处理XML提供了一个标准、双向模式的解析器接口,比StAX更简单,比DOM管理内存更有效。     

XML 文档解析技术

随着网络技术的发展,XML时代正在来临。由于XML文档本身只是一个文本文件,因此必须先对其解析才能提取其中内容。首先介绍了两种主要解析方式：DOM解析和SAX解析,然后介绍了如何利用Libxml2的DOM解析方式对XML文档进行解析。     

全新Internet工具包扩展了NI LabVIEW XML数据共享功能

20 0 4年 2月 ,美国国家仪器有限公司 ( NationalInstruments,简称 NI)宣布推出 Lab VIEW 7Express的一个附加工具包 NILab VIEW Internet工具包6.0版 ( NILab VIEW Internet Toolkit 6.0 ) ,它有一个跨平台的 XML DOM解析器 ,工程师们可以使用这一工具在 Lab VIEW图形化开发环境中读、写和解析XML格式的数据。该工具包的 XML DOM解析器结合了 XML的优势 ,提升了数据共享和管理的功能。XML是一种受到广泛采用的编程语言 ,用于基于 Internet的信息共享 ,它独立于机器和平台 ,提供了数据共享的标准化、兼容性和高效率 ,…     

VTD-XML解析技术研究

介绍了XML解析技术的研究动向,分析了DOM和SAX解析技术的特点,重点介绍了VTD XML解析技术,对这3种解析技术的优劣进行了比较,说明VTD在解析速度和性能上的优势。在此基础上设计了一个可视化XML集成解析系统,讨论了其各功能模块的划分,给出了该系统的结构图。     

全新Internet工具包扩展了NI LabVIEW XML数据共享功能

美国国家仪器有限公司(National Instruments，简称NI)宣布推出LabVIEW 7 Express的一个附加工具包——NI LabVIEW Internet 工具包6.0版(NI LabVIEW Internet Toolkit 6．0)，它有一个跨平台的XML DOM解析器，工程师们可以使用这一工具在LabVIEW图形化开发环境中读、写和解析XML格式的数据。     

Development of the readout system for waveguide multilayer optical card

Waveguide multilayer optical card （WMOC） is a novel storage device of three-dimensional optical information. An advanced readout system fitting for the WMOC is introduced in this paper. The hardware mainly consists of the light source for reading, WMOC, motorized stages addressing unit, microscope imaging unit, CCD detecting unit and PC controlling ＆ processing unit. The movement of the precision motorized stage is controlled by the computer through Visual Basic （VB） language in software. A control panel is also designed to get the layer address and the page address through which the position of the motorized stages can be changed. The WMOC readout system is easy to manage and the readout result is directly displayed on computer monitor.     

Nanoimprint Lithography -A Next Generation High Volume Lithography Technique

IntroductionNanoimprint Lithography is a well-acknowl-edged low cost, high resolution, large area pattern-ing process. It includes the most promising methods,high-pressure hot embossing lithography (HEL) [2],UV-cured imprinting (UV-NIL) [3] and micro contactprinting (m-CP, MCP) [4]. Curing of the imprintedstructures is either done by subsequent UV-lightexposure in the case of UV-NIL or by cooling downbelow the glass transition temperature of the ther-moplastic material in case of HEL…     

Collinear phase-matching study of terahertz-wave generation via difference frequency mixed in GaAs and Inp

The collinearly phase-matching condition of terahertz-wave generation via difference frequency mixed in GaAs and InP is theoretically studied. In collinear phase-matching, the optimum phase-matching wave hands of these two crystals are calculated. The optimum phase-matching wave bands in GaAs and lnP are 0.95-1.38μm and 0.7-0.96μm respectively. The influence of the wavelength choice of the pump wave on the coherent length in THz-wave tuning is also discussed. The influence of the temperature alteration on the phase-matching and the temperature tuning properties in GaAs crystal are calculated and analyzed. It can serve for the following experiments as a theoretical evidence and a reference as well.     

Effects of the alloy compositions on the phonon-polaritons in ternary mixed crystals

Composition dependence of bulk and surface phonon-polaritons in ternary mixed crystals are studied in the framework of the modified random-element-isodisplacement model and the Bom-Huang approximation. The numerical results for Several Ⅱ - Ⅵ and Ⅲ- Ⅴ compound systems are performed, and the polariton frequencies as functions of the compositions for ternary mixed crystals AlxGa1-xAs, GaPxAS1-x, ZnSxSe1-x, GaAsxSb1-x, GaxIn1-xP, and ZnxCd1-xS as examples are given and discussed. The results show that the dependence of the energies of two branches of bulk phonon-polaritons which have phonon-like characteristics, and surface phonon-polaritons on the compositions of ternary mixed crystals are nonlinear and different from those of the corresponding binary systems.     

Influence of PVK ： NPB hole transporting layer on the characteristics of organic light-emitting devices

A doping system consisting of NPB and PVK is employed as a composite hole transporting layer （CHTL）. By adjusting the component ratio of the doping system, a series of devices with different concentration proportion of PVK ： NPB are constracted. The result shows that doping concentration of NPB enhances the competence of hole transporting ability, and modifies the recombination region of charge as well as affects the surface morphology of doped film. Optimum device with a maximum brightness of 7852 cd/m^2 and a power efficiency of 1.75 lm/W has been obtained by choosing a concentration proportion of PVK ： NPB at 1：3.     

New insert layer structure OLEDs

An insert layer structure organic electroluminescent device（OLED） based on a new luminescent material （Zn（salen）） is fabricated. The configuration of the device is ITO/CuPc/NPD/Zn（salen）/Liq/LiF/A1/CuPc/NPD/Zn（salen）/Liq/LiF/A1. Effective insert electrode layers comprising LiF（1nm）/Al（5 nm） are used as a single semitransparent mirror, and bilayer cathode LiF（1 nm）/A1（100 nm） is used as a reflecting mirror. The two mirrors form a Fabry-Perot microcavity and two emissive units. The maximum brightness and luminous efficiency reach 674 cd/m^2 and 2.652 cd/A, respectively, which are 2.1 and 3.7 times higher than the conventional device, respectively. The superior brightness and luminous efficiency over conventional single-unit devices are attributed to microcavity effect.     

Analysis of error performance on Turbo coded FDPIM

Due to variable symbol length of digital pulse interval modulation（DPIM）, it is difficult to analyze the error performances of Turbo coded DPIM. To solve this problem, a fixed-length digital pulse interval modulation（FDPIM） method is provided. The FDPIM modulation structure is introduced. The packet error rates of uncoded FDPIM are analyzed and compared with that of DPIM. Bit error rates of Turbo coded FDPIM are simulated based on three kinds of analytical models under weak turbulence channel. The results show that packet error rate of uncoded FDPIM is inferior to that of uncoded DPIM. However, FDPIM is easy to be implemented and easy to be combined, with Turbo code for soft-decision because of its fixed length. Besides, the introduction of Turbo code in this modulation can decrease the average power about 10 dBm, which means that it can improve the error performance of the system effectively.     

A method for calculating the center position of collimated light

It is a key problem to accurately calculate beam spots＇ center of measuring the warp by using a collimated laser. A new method, named double geometrical center method （DGCM）, is put forward for the first time. In this method, a plane wave perpendicularly irradiates an aperture stop, and a charge couple device （CCD） is employed to receive the diffraction-beam spots, then the geometrical centers of the fast and the second diffraction-beam spots are calculated respectively, and their mean value is regarded as the center of datum beam. In face of such adverse instances as laser intension distributing defectively, part of the image being saturated, this method can still work well. What＇s more, this method can detect whether an unacceptable error exits in the courses of image receiving, processing and calculating. The experimental results indicate the precision of this method is high.     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Preparation and Characterization of TaN ALD Precursors

High purity organic-tantalum precursors for thin film ALD TaN were synthesized and characterized.Vapor pressure and thermal stability of these precursors were studied.From the vapor pressure analysis,it was found that TBTEMT has a higher vapor pressure than any other published liquid TaN precursor,including TBTDET,TAITMATA,and IPTDET.Thermal stability of the alkyl groups on the precursors was investigated using a 1H NMR technique.The results indicated that the tertbutylimino group is the most stable group on TBTDET and TBTEMT as compared to the dialkylamido groups.Thermal stability of TaN precursors decreased in the following order:TBTDET ＞ PDMAT ＞ TBTEMT.In conclusion,precursor vapor pressure and thermal stability were tuned by making slight variations in the ligand sphere around the metal center.