计算机专业外文翻译THINK IN JAVA

特别说明

此资料来自豆丁网(https://www.360docs.net/doc/3e11660378.html,/)

您现在所看到的文档是使用下载器所生成的文档

此文档的原件位于

https://www.360docs.net/doc/3e11660378.html,/p-259243334.html 感谢您的支持

抱米花

https://www.360docs.net/doc/3e11660378.html,/lotusbaob

外文翻译java

外文资料译文及原文 Java Java I/O 系统对编程语言的设计者来说，创建一套好的输入输出(I/O)系统，是一项难度极高的任务。这一点可以从解决方案的数量之多上看出端倪。这个问题难就难在它要面对的可能性太多了。不仅是因为有那么多I/O的源和目地(文件，控制台，网络连接等等)，而且还有很多方法(顺序的『sequential』，随机的『random-access』，缓存的『buffered』，二进制的『binary』，字符方式的『character』，行的『by lines』，字的『by words』，等等)。 Java类库的设计者们用"创建很多类"的办法来解决这个问题。坦率地说Java I/O系统的类实在是太多了，以至于初看起来会把人吓着（但是，具有讽刺意味的是，这种设计实际上是限制了类的爆炸性增长）。此外，Java在1.0版之后又对其I/O类库作了重大的修改，原先是面向byte的，现在又补充了面向Unicode字符的类库。为了提高性能，完善功能，JDK 1.4又加了一个nio(意思是"new I/O"。这个名字会用上很多年)。这么以来，如果你想对Java的I/O 类库有个全面了解，并且做到运用自如，你就得先学习大量的类。此外，了解 I/O类库的演化的历史也是相当重要的。可能你的第一反应是"别拿什么历史来烦我了，告诉我怎么用就可以了！"但问题是，如果你对这段历史一无所知，很快就会被一些有用或是没用的类给搞糊涂了。

本章会介绍Java标准类库中的各种I/O类，及其使用方法。 File 类在介绍直接从流里读写数据的类之前，我们先介绍一下处理文件和目录的类。 File类有一个极具欺骗性的名字；或许你会认为这是一个关于文件的类，但它不是。你可以用它来表示某个文件的名字，也可以用它来表示目录里一组文件的名字。如果它表示的是一组文件，那么你还可以用list( )方法来进行查询，让它会返回String数组。由于元素数量是固定的，因此数组会比容器更好一些。如果你想要获取另一个目录的清单，再建一个File对象就是了。实际上，叫它"FilePath"可能会更好一些。下面我们举例说明怎样使用这个类及其相关的FilenameFilter接口。目录列表器假设你想看看这个目录。有两个办法。一是不带参数调用list( )。它返回的是File对象所含内容的完整清单。但是，如果你要的是一个"限制性列表(restricted list)"的话——比方说，你想看看所有扩展名为.java的文件——那么你就得使用"目录过滤器"了。这是一个专门负责挑选显示File对象的内容的类。下面就是源代码。看看，用了java.utils.Arrays.sort( )和11章的AlphabeticComparator之后，我们没费吹灰之力就对结果作了排序(按字母顺序)： //: c12:DirList.java // Displays directory listing using regular expressions. // {Args: "D.*\.java"} import java.io.*; import java.util.*; import java.util.regex.*; import com.bruceeckel.util.*; public class DirList { public static void main(String[] args) { File path = new File("."); String[] list; if(args.length == 0) list = path.list(); else list = path.list(new DirFilter(args[0])); Arrays.sort(list, new AlphabeticComparator());

计算机专业毕业设计说明书外文翻译(中英对照)

Talking about security loopholes Richard S. Kraus reference to the core network security business objective is to protect the sustainability of the system and data security, This two of the main threats come from the worm outbreaks, hacking attacks, denial of service attacks, Trojan horse. Worms, hacker attacks problems and loopholes closely linked to, if there is major security loopholes have emerged, the entire Internet will be faced with a major challenge. While traditional Trojan and little security loopholes, but recently many Trojan are clever use of the IE loophole let you browse the website at unknowingly were on the move. Security loopholes in the definition of a lot, I have here is a popular saying: can be used to stem the "thought" can not do, and are safety-related deficiencies. This shortcoming can be a matter of design, code realization of the problem. Different perspective of security loo phole s In the classification of a specific procedure is safe from the many loopholes in classification. 1. Classification from the user groups: ● Public loopholes in the software category. If the loopholes in Windows, IE loophole, and so on. ● specialized software loophole. If Oracle loopholes, Apach e,

计算机专业外文文献及翻译

微软Visual Studio 1微软Visual Studio Visual Studio 是微软公司推出的开发环境，Visual Studio可以用来创建Windows平台下的Windows应用程序和网络应用程序，也可以用来创建网络服务、智能设备应用程序和Office 插件。Visual Studio是一个来自微软的集成开发环境IDE，它可以用来开发由微软视窗，视窗手机，Windows CE、.NET框架、.NET精简框架和微软的Silverlight支持的控制台和图形用户界面的应用程序以及Windows窗体应用程序，网站，Web应用程序和网络服务中的本地代码连同托管代码。 Visual Studio包含一个由智能感知和代码重构支持的代码编辑器。集成的调试工作既作为一个源代码级调试器又可以作为一台机器级调试器。其他内置工具包括一个窗体设计的GUI应用程序，网页设计师，类设计师，数据库架构设计师。它有几乎各个层面的插件增强功能，包括增加对支持源代码控制系统（如Subversion和Visual SourceSafe）并添加新的工具集设计和可视化编辑器，如特定于域的语言或用于其他方面的软件开发生命周期的工具（例如Team Foundation Server的客户端：团队资源管理器）。 Visual Studio支持不同的编程语言的服务方式的语言，它允许代码编辑器和调试器（在不同程度上）支持几乎所有的编程语言，提供了一个语言特定服务的存在。内置的语言中包括C/C + +中（通过Visual C++）,https://www.360docs.net/doc/3e11660378.html,（通过Visual https://www.360docs.net/doc/3e11660378.html,），C＃中（通过Visual C＃）和F＃（作为Visual Studio 2010），为支持其他语言，如M,Python,和Ruby等，可通过安装单独的语言服务。它也支持的 XML/XSLT,HTML/XHTML ,JavaScript和CSS.为特定用户提供服务的Visual Studio也是存在的：微软Visual Basic，Visual J＃、Visual C＃和Visual C++。微软提供了“直通车”的Visual Studio 2010组件的Visual Basic和Visual C＃和Visual C + +，和Visual Web Developer版本，不需任何费用。Visual Studio 2010、2008年和2005专业版，以及Visual Studio 2005的特定语言版本（Visual Basic、C++、C＃、J＃），通过微软的下载DreamSpark计划，对学生免费。 2架构 Visual Studio不支持任何编程语言，解决方案或工具本质。相反，它允许插入各种功能。特定的功能是作为一个VS压缩包的代码。安装时，这个功能可以从服务器得到。IDE提供三项服务：SVsSolution，它提供了能够列举的项目和解决方案; SVsUIShell，它提供了窗口和用户界面功能（包括标签，工具栏和工具窗口）和SVsShell，它处理VS压缩包的注册。此外，IDE还可以负责协调和服务之间实现通信。所有的编辑器，设计器，项目类型和其他工具都是VS压缩包存在。Visual Studio 使用COM访问VSPackage。在Visual Studio SDK中还包括了管理软件包框架(MPF)，这是一套管理的允许在写的CLI兼容的语言的任何围绕COM的接口。然而，MPF并不提供所有的Visual Studio COM 功能。

JAVA外文文献+翻译

Java and the Internet If Java is, in fact, yet another computer programming language, you may question why it is so important and why it is being promoted as a revolutionary step in computer programming. The answer isn’t immediately obvious if you’re coming from a traditional programming perspective. Although Java is very useful for solving traditional stand-alone programming problems, it is also important because it will solve programming problems on the World Wide Web. 1.Client-side programming The Web’s in itial server-browser design provided for interactive content, but the interactivity was completely provided by the server. The server produced static pages for the client browser, which would simply interpret and display them. Basic HTML contains simple mechanisms for data gathering: text-entry boxes, check boxes, radio boxes, lists and drop-down lists, as well as a button that can only be programmed to reset the data on the form or “submit” the data on the form back to the server. This submission passes through the Common Gateway Interface (CGI) provided on all Web servers. The text within the submission tells CGI what to do with it. The most common action is to run a program located on the server in a directory that’s typically called “cgi-bin.” (If you watch the address window at the top of your browser when you push a button on a Web page, you can sometimes see “cgi-bin” within all the gobbledygook there.) These programs can be written in most languages. Perl is a common choice because it is designed for text manipulation and is interpreted, so it can be installed on any server regardless of processor or operating system. Many powerful Web sites today are built strictly on CGI, and you can in fact do nearly anything with it. However, Web sites built on CGI programs can rapidly become overly complicated to maintain, and there is also the problem of response time. The response of a CGI program depends on how much data must

计算机专业外文文献翻译6

外文文献翻译（译成中文2000字左右）： As research laboratories become more automated,new problems are arising for laboratory managers.Rarely does a laboratory purchase all of its automation from a single equipment vendor. As a result,managers are forced to spend money training their users on numerous different software packages while purchasing support contracts for each. This suggests a problem of scalability. In the ideal world,managers could use the same software package to control systems of any size; from single instruments such as pipettors or readers to large robotic systems with up to hundreds of instruments. If such a software package existed, managers would only have to train users on one platform and would be able to source software support from a single vendor. If automation software is written to be scalable, it must also be flexible. Having a platform that can control systems of any size is far less valuable if the end user cannot control every device type they need to use. Similarly, if the software cannot connect to the customer’s Laboratory Information Management System (LIMS) database,it is of limited usefulness. The ideal automation software platform must therefore have an open architecture to provide such connectivity. Two strong reasons to automate a laboratory are increased throughput and improved robustness. It does not make sense to purchase high-speed automation if the controlling software does not maximize throughput of the system. The ideal automation software, therefore, would make use of redundant devices in the system to increase throughput. For example, let us assume that a plate-reading step is the slowest task in a given method. It would make that if the system operator connected another identical reader into the system, the controller software should be able to use both readers, cutting the total throughput time of the reading step in half. While resource pooling provides a clear throughput advantage, it can also be used to make the system more robust. For example, if one of the two readers were to experience some sort of error, the controlling software should be smart enough to route all samples to the working reader without taking the entire system offline. Now that one embodiment of an ideal automation control platform has been described let us see how the use of C++ helps achieving this ideal possible. DISCUSSION C++: An Object-Oriented Language Developed in 1983 by BjarneStroustrup of Bell Labs,C++ helped propel the concept of object-oriented programming into the mainstream.The term ‘‘object-oriented programming language’’ is a familiar phrase that has been in use for decades. But what does it mean? And why is it relevant for automation software? Essentially, a language that is object-oriented provides three important programming mechanisms:

无线局域网-计算机毕业论文外文翻译

毕业设计(论文)外文资料翻译系：信息工程学院专业：计算机科学与技术姓名：学号：外文出处：Chris Haseman. Android-essential (用外文写) s[M].London:Spring--Verlag,2008 .8-13. 附件： 1.外文资料翻译译文；2.外文原文。指导教师评语：签名：年月日注：请将该封面与附件装订成册。

附件1：外文资料翻译译文无线局域网一、为何使用无线局域网络对于局域网络管理主要工作之一，对于铺设电缆或是检查电缆是否断线这种耗时的工作，很容易令人烦躁，也不容易在短时间内找出断线所在。再者，由于配合企业及应用环境不断的更新与发展，原有的企业网络必须配合重新布局，需要重新安装网络线路，虽然电缆本身并不贵，可是请技术人员来配线的成本很高，尤其是老旧的大楼，配线工程费用就更高了。因此，架设无线局域网络就成为最佳解决方案。二、什么情形需要无线局域网络无线局域网络绝不是用来替代有限局域网络，而是用来弥补有线局域网络之不足，以达到网络延伸之目的，下列情形可能须要无线局域网络。 ●无固定工作场所的使用者 ●有线局域网络架设受环境限制 ●作为有线局域网络的备用系统三、无线局域网络存取技术目前厂商在设计无线局域网络产品时，有相当多种存取设计方式，大致可分为三大类：窄频微波技术、展频(Spread Spectrum)技术、及红外线(Infrared)技术，每种技术皆有其优缺点、限制及比较，接下来是这些技术方法的详细探讨。 1.技术要求由于无线局域网需要支持高速、突发的数据业务，在室内使用还需要解决多径衰落以及各子网间串扰等问题。具体来说，无线局域网必须实现以下技术要求： 1)可靠性：无线局域网的系统分组丢失率应该低于10-5，误码率应该低于10-8。

JAVA外文文献翻译基于Java技术的Web应用设计模型的比较研究

中文翻译基于Java技术的Web应用设计模型的比较研究来源：School of Computer Science and Engineering University of New South Wales Sydney, NSW 2052, Australia 作者：Budi Kurniawan and Jingling Xue 摘要 Servlet技术是在建立可扩展性Web应用中被应用最广泛的技术。在运用JAVA技术开发Web应用中有四种模型,分别是:Model 1、Model 2、Struts和JavaServer Faces JSF。Model 1使用一连串的JSP页面，Model 2采用了模型，视图，控制器MVC模式。Struts是一个采用了Model 2设计模型的框架，JSF是一种支持ready-to-use组件来进行快速Web应用开发的新技术。Model 1对于中等和大型的应用来说很难维护，所以不推荐使用。本文通过利用Model 2、Struts和JSF这三种模型分别构建三个不同版本的在线商店应用程序来比较和评价这三种模型在应用程序开发和性能上的差异。 1.绪论当今Web应用是一种展现动态内容的最普遍的方式。构建Web应用有许多种方法，其中最流行的是Servlet技术。这种技术的流行是因为它比CGI、PHP等其他技术更具优越性。然而Servlet对于开发来说还是麻烦的，因为它在传送HTML 标签时需要程序员将他们组合成为一个字符串对象，再将这个对象传给浏览器。同样的，对于输出的一个很小的改动也要求Servlet被重新编译。基于这个原因SUN 公司发明了JavaServer Pages JSP技术。JSP允许HTML标签和Java代码混合在

计算机专业外文翻译

专业外文翻译题目JSP Technology Conspectus and Specialties 系（院）计算机系专业计算机科学与技术班级学生姓名学号指导教师职称讲师二〇一三年五月十六日

JSP Technology Conspectus and Specialties The JSP (Java Server Pages) technology is used by the Sun micro-system issued by the company to develop dynamic Web application technology. With its easy, cross-platform, in many dynamic Web application programming languages, in a short span of a few years, has formed a complete set of standards, and widely used in electronic commerce, etc. In China, the JSP now also got more extensive attention; get a good development, more and more dynamic website to JSP technology. The related technologies of JSP are briefly introduced. The JSP a simple technology can quickly and with the method of generating Web pages. Use the JSP technology Web page can be easily display dynamic content. The JSP technology are designed to make the construction based on Web applications easier and efficient, and these applications and various Web server, application server, the browser and development tools work together. The JSP technology isn't the only dynamic web technology, also not the first one, in the JSP technology existed before the emergence of several excellent dynamic web technologies, such as CGI, ASP, etc. With the introduction of these technologies under dynamic web technology, the development and the JSP. Technical JSP the development background and development history In web brief history, from a world wide web that most of the network information static on stock transactions evolution to acquisition of an operation and infrastructure. In a variety of applications, may be used for based on Web client, look no restrictions. Based on the browser client applications than traditional based on client/server applications has several advantages. These benefits include almost no limit client access and extremely simplified application deployment and management (to update an application, management personnel only need to change the program on a server, not thousands of installation in client applications). So, the software industry is rapidly to build on the client browser multilayer application. The rapid growth of exquisite based Web application requirements development of

JAVA思想外文翻译毕业设计

文献来源：Bruce Eckel.Thinking in Java [J]. Pearson Higher Isia Education,2006-2-20. Java编程思想 (Java和因特网) 既然Java不过另一种类型的程序设计语言，大家可能会奇怪它为什么值得如此重视，为什么还有这么多的人认为它是计算机程序设计的一个里程碑呢？如果您来自一个传统的程序设计背景，那么答案在刚开始的时候并不是很明显。Java除了可解决传统的程序设计问题以外，还能解决World Wide Web(万维网) 上的编程问题。 1、客户端编程 Web最初采用的“服务器－浏览器”方案可提供交互式内容，但这种交互能力完全由服务器提供，为服务器和因特网带来了不小的负担。服务器一般为客户浏览器产生静态网页，由后者简单地解释并显示出来。基本HTML语言提供了简单的数据收集机制：文字输入框、复选框、单选钮、列表以及下拉列表等，另外还有一个按钮，只能由程序规定重新设置表单中的数据，以便回传给服务器。用户提交的信息通过所有Web服务器均能支持的“通用网关接口”（CGI）回传到服务器。包含在提交数据中的文字指示CGI该如何操作。最常见的行动是运行位于服务器的一个程序。那个程序一般保存在一个名为“cgi-bin”的目录中（按下Web页内的一个按钮时，请注意一下浏览器顶部的地址窗，经常都能发现“cgi-bin”的字样）。大多数语言都可用来编制这些程序，但其中最常见的是Perl。这是由于Perl是专为文字的处理及解释而设计的，所以能在任何服务器上安装和使用，无论采用的处理器或操作系统是什么。 2、脚本编制语言插件造成了脚本编制语言的爆炸性增长。通过这种脚本语言，可将用于自己客户端程序的源码直接插入HTML页，而对那种语言进行解释的插件会在HTML 页显示的时候自动激活。脚本语言一般都倾向于尽量简化，易于理解。而且由于它们是从属于HTML页的一些简单正文，所以只需向服务器发出对那个页的一

计算机专业外文文献及翻译

计算机专业外文文献及翻译微软Visual Studio 1微软Visual Studio 是微软公司推出的软软软境～可以用软建来平台下的 Visual Studio Visual StudioWindows 软用程序和软软用程序～也可以用软建软服软、智能软软软用程序和网来网插件。WindowsOffice Visual 是一自微软的个来集成软软软境;,～可以用软软由它来微StudioIDEinteqrated development environment软软窗～软手机窗～、框架、精软架框和微软的支持的控制台和软Windows https://www.360docs.net/doc/3e11660378.html,Silverlight 形用软界面的软用程序以及窗体软用程序～站网～软用程序和软服软网中的本地代软软同托管WindowsWeb 代软。包含一由个智能感知和代软重构支持的代软软软器。集成的软软工作作软一源代软软软既个Visual Studio 软器又可以作软一台机器软软软器。其他置工具包括一软软内个窗体的软用程序～软软软软～软软软软～网数据软架GUI 构软软软。有乎各软面的件增强功能～包括增加软支持它几个插源代软控制系软;如和SubversionVisual ,添加新的工具集软软和可软化软软器～如并特定于域的软言或用于其他方面的软件软软生命周期SourceSafe 的工具;例如的客软端,软软软源管理器,。Team Foundation Server

支持不同的软程软言的服软方式的软言～允软代软软软器和软软器;在不同程度上,支持它Visual Studio 几乎所有的软程软言～提供了一软言特定服软的存在。置的软言中包括个内中;通软C/C + +Visual C+,;通软,～,中;通软,,和,;作软+,https://www.360docs.net/doc/3e11660378.html,Visual https://www.360docs.net/doc/3e11660378.html,CVisual CFVisual Studio ,～软支持其他软言～如和等～可通软安软的软言服软。软也支持装独它的2010M,Python,Ruby 和软特定用软提供服软的也是存在的,微 XML/XSLT,HTML/XHTML ,JavaScriptCSS.Visual Studio软～,、,和。Visual BasicVisual JVisual CVisual C++ 微软提供了“直通软”的软件的和,和～Visual Studio 2010Visual BasicVisual CVisual C + +和版本～不需任何软用。、年和软软版～以及Visual Web DeveloperVisual Studio 201020082005 的特定软言版本;、、,、,,～通软微软的下软Visual Studio 2005Visual BasicC++CJ 软～软生免软。划学DreamSpark 2架构不支持任何软程软言～解方案或工具本软。相反～允软入各软功能。特定的功决它插Visual Studio 能是作软一个软软包的代软。安软～软功能可以服软器得到。装个从提供三软服软,～VSIDESVsSolution它决提供了能软列软的软目和解方案～提供了口和用软界面功能;包括软软～工具软和工它窗; SVsUIShell 具口,和窗～软理它软软包的注。此外～册软可以软软软软和服软之软软软通信。所有的软软器～SVsShellVSIDE

Java的面向对象编程外文资料翻译

毕业设计(论文)外文资料翻译系：计算机系专业：计算机科学与技术姓名：学号：外文出处：Ghosh,D..Java Object-oriented (用外文写) programming[J]. IEEE Transactions on Software Engineering,2009, 13(3):42-45. 附件： 1.外文资料翻译译文；2.外文原文。

注：请将该封面与附件装订成册。

附件1：外文资料翻译译文 Java的面向对象编程 ——面向对象编程和它的关键技术—继承和多态性软件的重用可以节省程序开发时间。它鼓励重复使用已经调试好的高质量的软件，从而减少系统运行后可能出现的问题。这些都是令人振奋的可能性。多态性允许我们用统一的风格编写程序，来处理多种已存在的类和特定的相关类。利用多态性我们可以方便地向系统中添加新的功能。继承和多态对于解决软件的复杂性是一种有效可行的技术。当创建一个新的类时，而不用完整的写出新的实例变量和实例方法，程序员会指定新的类继承已定义的超类的实例变量和实例方法。这个新的类被称为一个子类。每个子类本身将来亦可有新的子类，而其本身将成为父类。一个类的直接父类就是该类所直接继承的类（通过关键字extends继承）。一个间接超类是通过从两级或更多级以上的类继承而来的。例如，从类JApplet（包javax.swing 中）扩展来的类Applet（包java.applet）。一个类单一的从一个父类继承而来。 Java 不支持多重继承（而C++可以），但它支持接口的概念。接口可以使Java实现许多通过多重继承才能实现的优点而没有关联的问题。我们将在本章讨论的接口的详细内容。我们会给出创建和使用接口的一般规律和具体实例。一个子类通常添加自己的实例变量和自己的实例方法，因此子类通常比父类大。一个子类比它的父类更具体并且代表一组更小、更专业的对象。通过单一继承，子类在开始时拥有父类的所有特性。继承性真正的力量在于它可以在定义子类时增加或取代从超类中继承来的特征。每个子类对象也是该类的父类的对象。例如，每一个我们所定义的小程序被认为是类JApplet 的对象。此外，因为Japplet继承了Applet，每一个我们所定义的小程序同时也被认为是一个Applet 的对象。当开发applets时，这些信息是至关重要的，因为一个小程序容器只有当它是一个Applet才可以执行一个程序。虽然子类对象始终可以作为它的父类的一种来看待，父类对象却不被认为是其子类类型的对象。我们将利用这种“子类对象是父类对象”的关系来执行一些强大的操作。例如，绘图程序可以显示一系列图形，如果所有的图形类型都直接或间接地继

计算机专业的外文文献.pdf

A Rapid Tag Identification Method with Two Slots in RFID Systems Yong Hwan Kim, Sung Soo Kim, Kwang Seon Ahn Department of Computer Engineering, Kyungpook National University Daegu, Korea {hypnus, ninny, gsahn}@knu.ac.kr Abstract—RFID is core technology in the area of ubiquitous compu-ting. Identify the objects begin with the reader’s query to the tag at-tached to the subject. When multiple tags exist in the reader’s inter-rogation zone, these tags simultaneously respond to the reader’s query, resulting in collision. In RFID system, the reader needs the anti-collision algorithm which can quickly identify all the tags in the interrogation zone. This paper proposes tree based Rapid Tag Identi-fication Method with Two Slots(RTIMTS). The proposed algorithm rapidly identifies a tag with the information of Two Slots and MSB(Most Significant Bit). Two Slots resolve the tag collision by receiving the response from the tag to the Slot 0 and 1. The reader can identify two tags at once using MSB of information added to the tag ID. With RTIMTS algorithm, the total time of tag identification can be shortened by decreasing the number of query-responses from the reader. Keywords-RFID; Anti-collision; Two Slots; the number of query-responses. I.I NTRODUCTION RFID(Radio Frequency Identification) is a technology that deciphers or identifies the tag information through a reader (or interrogator) without contact. RFID have become very popular in many service industries, purchasing and distribution logis-tics, industry, manufacturing companies and material flow systems. Automatic Identification procedures exist to provide information about people, animals, goods and products in tran-sit[1][2]. The reader receives required information from the tags by sending and receiving wireless signals with the tag. Since the communication between the readers and the tags shares wire-less channels, there exist collisions. The collisions can be di-vided into the reader collision and the tag collision. The reader collision occurs when multiple readers send request signals to one tag, and the tag receives the wrong request signal due to signal interference between readers. The tag collision occurs when more than two tags simultaneously respond to one reader and the reader cannot identify any tags. This kind of collision makes the reader take long time to identify tags within the read-er’s identification range and impossible to identify even one tag[3][4][5] [6]. Therefore, the collision is a crucial problem that must be re-solved in RFID systems, so many studies to resolve this prob-lem have been carried out as well as are ongoing. This paper focuses on the tag collision problem which occurs in the case where one reader identifies multiple tags. Figure 1 provides schematizations of reader collision and tag collision. This paper proposes the Rapid Tag Identification Method with Two Slots (RTIMTS), for faster tag identification in mul-ti-tag environment where one reader identifies multiple tags. In the transfer paper[7], the proposed algorithm designs the method that it does without the value extracting procedure of even(or odd) parity bit of ID bit(T pb),the number of identified ‘1’s(T1n), the number of remaining ‘1’s(T rn), and the number of collided bit (T cb) with simple it can predict a tagID. Maximum 4 tag IDs can be identified on one round by using Two slots. a) The Reader collision b) The Tag collision Figure 1. The collision problem in RFID System II.T HE R ELATED WORKS A. Query Tree Query Tree(QT) algorithm is a binary tree based anti colli-sion algorithm and has an advantage in easily implementation due to its simple operating mode[8]. QT sets the reader’s query and tag’s response as one round, and identifies tags by iterating the round. In each round, the reader requests prefix to tag’s ID. And when ID matches the prefix, each tag transmits all IDs including prefixes to the reader. At this time, if more than one tag simultaneously responds, the reader cannot recognize tag’s ID, but can recognize that there are currently more than two tags having the prefix. Then the reader adds ‘0’ or ‘1’ to the current prefix and queries the longer prefix to the tags again. When only one tag responds to the reader, it identifies the tag. In other words, the reader adds the prefix by 1 bit until only one tag responds and iterates this process until identifying all the tags within the range. Figure 2 shows the operating process of QT algorithms[10]. Figure 2 shows the process that four tags respond according to the readers’ query. In round 1, 2, 3, and 7, the collision oc-curs because more than two tags respond, and in round 4, 5, 8, and 9, tag can be identified because only one tag responds. The digital coding method applied to QT cannot detect the collision bits. When a collision occurs, the reader adds ‘0’ or ‘1’ to the 2009 Eighth IEEE International Symposium on Network Computing and Applications 978-0-7695-3698-9/09 $25.00 ? 2009 IEEE DOI 10.1109/NCA.2009.21 292