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The author raises experience to the level of theory by generalizing and approaches the construction of digital library.

本文对数字图书馆建设做了深入地探讨,论文共分六个部分:第一部分,对数字图书馆进行概要性地分析,主要阐述了数字图书馆的概念、特点和功能;第二部分,讨探了数字图书馆的资源体系建设;第三部分,分析了数字图书馆的技术体系,包括数字图书馆的技术组成和技术标准;第四部分,对数字图书馆的服务体系作了分析;第五部分,分析了数字图书馆的管理体系建设;第六部分,讨探了数字图书馆与知识产权保护的有关问题。

along with the development of digital technology,digital filters are widely used in many fields,this paper introduces how to design a iir digital notch filters in matlab environment.the design of digital notch filters can be achieved through three steps:firstly,the design of analog lowpass filter; secondly,it is analog lowpass to analog band stop filter conversion;at last,using the bilinear transformation make the analog notch filters change into digital notch filters.the paper also introduces how to design the transfer function of the digital notch filters using all the zeros and farthest points at the same time,it also introduces the program of the digital notch filters under butterworth analog lowpass prototype.

摘 要:随着数字技术的发展,数字滤波器在许多领域得到广泛的应用。研究一种在matlab语言环境下设计iir数字陷波滤波器的方法,在数字陷波滤波器设计过程中,先进行模拟低通滤波器的设计,然后进行模拟低通/模拟带阻滤波器转换,最后采用双线性变化法将模拟陷波滤波器转化成数字陷波滤波器。提出一种用所有零点和极点来表达数字陷波器传递函数的方法,同时给出以巴特沃斯模拟低通为原型设计数字陷波滤波器的程序。关键词:无限冲激响应;巴特沃斯滤波器;数字陷波滤波器;matlab;双线性变换

The main content of this thesis includes six parts. First of all, it is a comprehensive systematic introduction about RSA algorithm including the present application situation and principle of RSA algorithm----producing big prime numbers and secret keys, the encryption arithmetic for information and the decryption for secret information, which establish the theory foundation for achieving concrete; secondly, it introduces some basic conception of RSA digital signature and theory of digital signature realizing process; thirdly, it introduces the basic principle of MD5 algorithm; fourthly, it states design and realization of RSA digital signature in detail. The main modules includes producing RSA secret keys, implementation of RSA encryption algorithm and decryption algorithm, producing message digest and realizing digital signature and verification by RSA; the fifth, it carries on testing entirely, analyzing and improving for this system;The sixth, it analyses the security of RSA digital signature and points out the development direction of RSA digital signature.

本文主要研究的内容包括:第一,对RSA算法进行了全面系统的介绍,包括RSA算法的应用现状和原理—大素数的产生、密钥对的产生、对明文的加密运算和密文的解密运算,为具体实现打下了理论基础;第二,介绍了RSA数字签名的一些基本概念和数字签名的理论实现过程;第三,对MD5算法基本原理的介绍;第四,详述了RSA数字签名的设计与实现,主要实现的模块包括RSA密钥的产生,RSA加密算法和解密算法的实现,消息摘要MD的生成以及利用RSA算法实现数字签名和签名的验证;第五,对该系统进行了整体的测试和分析改进;第六,分析了RSA数字签名的安全性,指出了RSA数字签名的发展方向。

Based on the summarization of metadata, DL and DLIO, this paper illustrates the essentialness of metadata"s application in DLIO, the organization structure of DL"s information resources, metadata standard design and metadata creating in DL. After this, it introduces and analyzes the application of DC, MARC and Chinese metadata standard in DLIO and gives an applied case.

本论文以元数据概述和数字图书馆及其信息组织概述作铺垫,对元数据应用于数字图书馆信息组织的必要性、数字图书馆信息资源的组织结构、数字图书馆元数据标准的选择与设计及元数据的编制进行了详细阐述,之后,又对数字图书馆信息组织中广泛使用的DC元数据、MARC以及具有代表性的国内专门数字对象中文元数据标准进行了介绍与分析,并辅之以上海数字图书馆元数据方案的实例。

Conference Topics:Digital methods,systems and equipment for image capture;Color Science and Technology for digital imaging system;Digital imaging processing and manipulation;Novel Imaging and related functional materials;UV curing materials and technologies; Digital image rendering and display technologies; Evaluation methods and instrumentation for digital imaging and related performances; Digital media and image performance; Digital output and hardcopy technologies; Digital photofinishing and systems;Digital and on-demand printing/publishing technology and Systems.

会议内容:数字影像的捕获方法、系统与设备;数字影像系统的色彩科学与技术;数字影像处理;新型影像材料和相关功能材料;紫外光固化涂料和固化技术;数字影像渲染和显示技术;数字影像和相关性能的评价方法和设备;数字影像和动画;数字媒体和影像性能;数字输出和硬拷贝技术;数字冲洗胶片和系统;数字印刷与按需印刷技术和系统等。

the digitized mapping technique is to combine the field data collection system with the computer assisted mapping system in surveys by computer technology.it aims to realize the information collected and processed digitally and automaticaity.the digitized mapping technique can cut short the working time,lighten the labor intensity and enhance the precision of the productions.the system consists of three parts,such as data input,data processing and data output.the survey-record digitized mapping technique is widely used in the digitized mapping working pattern.for its superiority over traditional plane-table mapping in accuracy and efficiency,the large scale digital mapping is becoming more and more popular.compared with traditional analogue mapping,digital mapping has more quality control pivotai points,and its contents and methods are more complex.with the appearance of new technology gps ,the coordinate of different levels controlling points may be surveyed in high precision and it has been applied widely in topographic survey.the operation process of gps electronic tachometer is introduced and its application in topographic survey is br

计算机应用论文,计算机论文, rtk ,全站仪,数字测图,地形测量, gps论文摘要:数字测图是在测量工作中利用电子计算机技术将野外数据采集系统与内业机助制图系统相结合,其目标是实现信息采集处理的数字化、自动化、信息化。数字测图可以缩短作业时间,减轻劳动强度,提高成果精度。数字测图系统主要由数据输入、数据处理和数据输出3部分组成,数字测图作业模式中测记式数字测图应用最为广泛。大比例尺数字测图正以其测图精度高,成图速度快等优势逐步的取代传统的,以平板仪为主的模拟测图。与传统的模拟测图相比,数字测图的质量控制关键点更多、内容与方法更为复杂。gps 新技术的出现,可以高精度并快速地测定各级控制点的坐标,在地形测量中已得到广泛地应用。本文介绍了gps 配合全站仪的作业流程,简要阐明了其在地形测量中的应用。在利用实测数据成图的过程中,解决一些常见的问题,并给出解决的办法及依据,同时给出一些有益的结论,以适应实际使用的需要。

Inputs and Outputs Front Panel: Phones: Standard headphone output jack (gold-plated) Video 4: Gold-plated stereo RCA jacks, gold-plated RCA composite video jack and S-video jack Digital Optical 3 Input: Standard Toslink digital input with a plastic protective plug Digital Coax 3 Input: Standard gold-plated coaxial digital jack Back Panel: AM Loop Antenna Input: Two thumb screw connections FM 75-ohm Antenna input: Threaded "F" type connector Tape Input/Output: Stereo RCA jacks Video 3 Input: Stereo RCA jacks, RCA composite video jack and S-video jack Video 2 Input/Output: Stereo RCA jacks, RCA composite video jacks and S-video jacks Video 1 Input/Output: Stereo RCA jacks, RCA composite video jacks and S-video jacks DVD Input: Stereo RCA jacks, RCA composite video jack, and S-video jack CD Input: Stereo RCA jacks Monitor Output: RCA composite video jack and S-video jack Subwoofer Preamp Output: 1 RCA jack Digital Optical 1 Input: Standard Toslink digital input with a plastic protective plug Digital Optical 2 Input: Standard Toslink digital input with a plastic protective plug Digital Coax 1 Input: Standard coaxial digital jack Digital Coax 2 Input: Standard coaxial digital jack Digital Optical Output: Standard Toslink digital output with a plastic protective plug Digital Coax Output: Standard coaxial digital jack Remote Control In/Out Jacks: One mini-jack input and one mini-jack output Speaker Outputs: Binding post outputs for front left, front right, surround left, surround right, and center speakers (posts are not 5-way binding posts, because each post has a plastic collar that prevents used with spade lugs and the posts are too far apart to use dual banana plugs) AC Outlets: One unswitched AC outlet and one switched AC outlet

投入和产出接待小组:电话:标准耳机输出插孔视频4 :镀金立体声RCA插孔,镀金的RCA复合视频插孔和S - Video插孔数字光学3输入:标准Toslink数字输入与一个塑料保护插头数字同轴3输入:标准镀金同轴数字接口背板:上午环形天线输入:两个拇指螺丝连接调频75欧姆天线输入:线程的& F &型连接器,磁带输入/输出:立体声RCA插孔视频3输入:立体声RCA插孔,插孔的RCA复合视频和S - Video插孔视频2输入/输出:立体声RCA插孔,莲花复合视频插孔和S - Video插孔视频1输入/输出:立体声RCA插孔,插孔的RCA复合视频和S端子接口的DVD输入:立体声RCA插孔,插孔的RCA复合视频和S -视频CD输入端插孔:立体声RCA插孔监视器输出:复合视频的RCA插孔和S - Video插孔低音前置输出: 1的RCA插孔数字光1输入:标准Toslink数字输入与一个塑料保护插头数字光2输入:标准Toslink数字输入与一个塑料保护插头数字同轴输入1 :标准同轴数字接口数字同轴2输入:同轴数字接口标准数字光输出:标准Toslink数字输出塑料防护插件数字同轴输出:标准同轴数字接口远程控制在/输出插孔:一个迷你插孔输入和1个小型插孔输出扬声器输出:结合后产出的左前方,右前方,左环绕,右环绕和中心发言(职位不是5个具有约束力的方式,因为每个职位有一个塑料环,可以防止使用铁锹派和职位过于遥远使用双香蕉插头)交流插座:一个unswitched AC插座和一个开关AC电源插座

The dazzling light from the digital数字『式』 device dizzied me.

www.kekenet.com 可可听力网从数字设备中发出的耀眼的光使我眩晕。

The invention discloses a digital good transaction system and the method. It mainly carries on coding process to at least one digital good in a content downloading center into a coded digital good, and the coded digital good will be transmitted to at least one content downloading station with real memory transmission path, when the consumer selects a digital good, the user can uses a content downloading card into a content downloading station, uses a reality transmission path to store the digital good to be purchased, and uses a network transmission wire to connect the content downloading center, the center incriminates the card number in order to generate a card number decoding data, and download the decoding data into a content downloading card, when the consumer want toe buy a digital good, the content can be downloaded into a content card reader, and the reader incriminate the card number to reduces the decoded data and the digital good, in order to generate the digital good which can be read and used.

本发明公开了一种数字商品交易系统及其交易方法,其主要是将至少一数字商品在一内容下载中心进行加密处理以成为一加密数字商品,而加密数字商品将以实际的储存器传递线路以直接送到至少一内容下载点中,当消费者选定一欲购买数字商品时,可持一内容下载卡至其中一内容下载点,利用一实体传输线路直接储存所欲购买的加密数字商品,并藉由一网络传输线路以连接内容下载中心,内容下载中心将根据卡号识别码以产生一卡号解密资料,并将卡号解密资料下载至内容下载卡,当消费者欲使用欲购买数字商品时,即可将内容下载卡置入一内容卡片阅读机中,而内容卡片阅读机将根据卡号识别码以还原卡号解密资料及加密数字商品,以产生可供读取使用的数字商品。

As it was first time for the BARDE to collect the figures from website and there were around 70% member hotels finishing their figures submitting before 5:00pm on Monday as required by BARDE, but the rest member hotels had still need my secretary to chase their figures manually as BARDE want to all our member hotels's figures could show on the web page on this FIRST TIME. So BARDE had closed submitting at 11:00am on the Tuesday morning and presented on the website at 13:00; So I have to say sorry to all those hotels which had submitted figures punctually that I had had to break my promise as all those figures suppose to be put on the website in the evening of Monday.

鉴于这是协会第一次在网上收集每周的四位数,大约有70%的会员酒店在星期一下午5:00之前按照协会要求在网上申报了数字;为了保证协会第一次在网上发布数字的全面性,我的秘书又对剩余的未按时在网上申报数字的酒店逐一打电话进行了查询及数字收集,因此协会直到星期二上午11:00才停止了网上报数并于13:00将所有数字在网上发布;所以我本人必须对没有按照最初的承诺于星期一晚间将数字发布于网上而向所有按时在网上申报数字的会员酒店诚挚道歉。

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Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时,他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

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世纪伟人邓小平的富民思想,是邓小平经济理论体系中的重要组成部分,是我国经济建设根本任务的一个重要方面。