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按分类查找All 系统设计方案(88) 

[系统设计方案] 华为海关信息系统vpn及加密解决方案

华为 Quidway 系列多协议路由器,支持 PPP、FR、X25、SLIP、HDLC 等网络协议,用户可通过各种广域网线路接入 Internet 及互联互访。 路由器内置安全防火墙、NAT、RADIUS 安全认证,以及 CALL BACK 等多项互联安全防护功能;并通过 CA 认证协议的验证和 IPSec 隧道协议,在 Internet 上构建安全可靠的网络通道,基于硬件的数据加密,将保密数据加密后在隧道上传输,加密数据有可靠的保密性但牺牲了效率;非保密数据可以通过一般性安全处理在隧道上传输,保证较高的转发速率。硬件加密的算法采用专门的芯片(经过国家相关部门批准)进行加密,密钥长度大于 128 位,并提供高强度的一次一密功能。配合完全自主知识产权的软硬件平台,提供网络的安全互联和数据的安全传输的安全解决方案。 而 "备份中心"的可靠性备份解决方案,实现多种线路之间的任意备份和业务分担,为网络提供业界最坚固的保护屏障,保证网络的可靠运行。
Huawei Quidway series of multi-protocol routers to support PPP, FR, X25, SLIP, HDLC and other network protocols, users can through various WAN lines and Internet access to the Internet visits. Built-in security firewall router, NAT, RADIUS authentication, and a number of other CALL BACK Internet security protection functions; And through CA and validation of the agreement IPSec agreement on the Internet to establish a secure and reliable network access, hardware-based data encryption, data encryption confidentiality the tunnels on the Tunnel, a reliable data encryption confidentiality expense of efficiency; non-confidential data can be handled through the general security on the transmission tunnel to ensure a higher rate of transponders. Hardware encryption algorithm using specialized chi (2005-03-19, WORD, 80KB, 下载836次)

http://www.pudn.com/Download/item/id/1111162845951673.html

[系统设计方案] ULA

已知:信号中心波长为2,天线阵元的间距为1米,快拍数为2000,空中有四个 源信号,假设它们的频率 四个源信号的方向分别为: 求: 1)在不加入噪声的情况下,观察并计算协方差矩阵特征值,并对它的特点 加以说明 2)分别采用MUSIC算法,CAPON算法, ESPRIT算法在下面四种情况下,对 上述四个信号源的波达方向进行估计,并画出它们的空间谱图; ①在不加入噪声的情况下, ②在加入高斯白噪声的情况下,假设信噪比为10dB 3)在信噪比变化范围为-20dB~+20dB时,分别采用MUSIC算法,CAPON算 法, ESPRIT算法,对上述四个信号源的波达方向进行估计,并画出波达方 向估计误差,随着信噪比变化的曲线图(即横轴为信噪比,纵轴为误差值) (2008-07-01, matlab, 76KB, 下载695次)

http://www.pudn.com/Download/item/id/502141.html

[系统设计方案] net-game-servers-design

优秀硕士论文《网络游戏服务器集群的设计和实现》,本论文立足于网络游戏服务器端的开发,在借鉴前人设计的基础上,将网络游戏服务中所普遍需要的几大功能进行分解、实现并进一步将它们构建为服务器集群。对“如何稳定地协调游戏服务器与各功能服务器并同时给游戏玩家以较完美的游戏体验?如何利用服务器集群来将维持整个虚拟游戏世界运转的任务分配到不同的计算机?如何达到降低单台计算机的负载,更好的保证网络的稳定性和通讯的及时性,支持更多的同时在线人数?"等几个问题给出了实现层面的解答。 在本课题给出的服务器集群中,整个游戏服务按功能被分解为游戏世界整体控制、玩家登陆验证、游戏逻辑过程处理和数据存取等不同的部分,这些部分的工作由中央控制服务器、登陆验证服务器、游戏逻辑服务器和数据库服务器分别负责。由于使用了中央控制服务器作为一个信息的集成和中转中心,本服务器构架具有较好的可扩展性,可以在此基础上将其扩展为能够胜任商业化的运营的服务器集群。虽然本文给出的只是游戏服务器集群的一个实现方案,距离商业运营所需达到的要求还有一定的距离,但测试数据说明该方案是可行的,为今后商业运营软件的开发打好了基础。
err (2007-11-28, C/C++, 3338KB, 下载416次)

http://www.pudn.com/Download/item/id/366632.html

[系统设计方案] 税务客户服务中心

利用客户服务中心(呼叫中心)技术,建设纳税综合服务系统,可极大地提高税务机关税务征管工作的效率,同时可为广大纳税用户提供电话、传真等多种服务方式,方便其纳税。
use of the Customer Service Center (call center) technology, building integrated tax system can greatly improve the tax authorities of tax collection efficiency, while the majority of users pay for phone, fax and other services, to facilitate its taxpayers. (2005-09-05, WORD, 9KB, 下载393次)

http://www.pudn.com/Download/item/id/110555.html

[系统设计方案] 黄鑫 毕业设计(论文)开题报告

黄鑫 毕业设计(论文)开题报告
design (thesis) that opened report (2005-01-18, WINDOWS, 56KB, 下载180次)

http://www.pudn.com/Download/item/id/1105981293565977.html

[系统设计方案] IPSMS-_-a-network-monitoring

描述一个网络舆情监控系统 IPSMS( Internet public sentiment monitoring system) 。该系统试图将网络新闻及论坛、BBS 上 的帖子依关键词搜索,并依“事件”聚类,让管理者通过阅读事件可以了解正在发生或已经发生的事件,并提供自动持续追踪事件发 展的功能,以协助管理者快速完整且全面地了解事件全貌
Describe a network of public opinion monitoring system IPSMS (Internet public sentiment monitoring system). The system attempts to network news and forums, BBS posts on search by keyword, and according to the " event" cluster, so that managers can learn by reading the event is happening or has happened, and automatically keep track of events provide the features to help administrators to quickly complete and comprehensive picture about the incident (2011-11-24, Java, 595KB, 下载152次)

http://www.pudn.com/Download/item/id/1709445.html

[系统设计方案] xinwenfabuxitongtongxue

这是同学做的新闻发布系统论文,希望能对大家有帮助!
This is the students to do the press release system papers, hoping to have everyone help! (2007-08-08, WORD, 380KB, 下载143次)

http://www.pudn.com/Download/item/id/316817.html

[系统设计方案] FrequencyHoppingTechnology

在无线通信中使用跳频技术是军事通信中最主要的抗干扰手段之一, 而如果系统中能使用合适的中心频率可以快速跟踪跳频变化的带通滤波器将可以明显改善系统的抗干扰性能。文中从实际应用出发, 比较了几种可用于实现带通滤波器快速变频的方案, 选择了简单、实用的开关电容阵改变带通滤波器中心频率的方案
The use of frequency hopping in wireless communication technology is the most important anti-jamming in military communications, one of the means, and if the system can use the appropriate center frequency can be fast-tracked changes in frequency-hopping band-pass filter will be able to significantly improve the system anti-jamming性能. This paper from the actual application, the comparison of several band-pass filter can be used to achieve the rapid conversion of the program, choose a simple, practical switched capacitor array to change the center frequency of band-pass filter program (2009-12-22, C/C++, 233KB, 下载119次)

http://www.pudn.com/Download/item/id/1014299.html

[系统设计方案] 4

提出了一种基于CCD图像的塑料齿轮齿形缺陷检测方法。采用A102FCCD数字摄像头采集塑料齿轮的图像, 经 过IEEE1394数字接口卡传输到计算机。对含有噪声的原始数字图像实施平滑处理、图像分割、轮廓提取及细化等处理, 使图像转变成易于检测的单像素宽边缘信息。检测了齿轮中心孔的圆心, 进而对齿轮齿形缺陷进行检测。理论分析及实验 结果表明该方法检测速度快、精度高, 满足产品在线检测的要求。
A CCD image of the plastic-based gear defect detection methods. A102FCCD using digital camera images collected plastic gears, the transmission IEEE1394 digital interface card to a computer. Containing the original digital image noise smoothing the implementation of treatment, image segmentation, contour extraction and refining, such as treatment, so that image into a single easy to detect the edge information pixels wide. Detection of the gear center hole of the center of a circle, and thus gear defect detection. Theoretical analysis and experimental results show that the method of detection of high speed and accuracy to meet the requirements of product-line detection. (2008-06-04, C/C++, 382KB, 下载104次)

http://www.pudn.com/Download/item/id/481345.html

[系统设计方案] dpj

单片机控制交通灯设计 十字路口车辆穿梭,行人熙攘,车行车道,人行人道,有条不紊。那么靠什么来实现这井然秩序呢?靠的是交通信号灯的自动指挥系统。交通信号灯控制方式很多。本设计主要分为五大模块输入控制电路、时钟控制电路、片内外程序切换控制、显示电路。以MSC-51系列单片机IntelAT89C51为中心器件来设计交通灯控制器,实现了AT89C51芯片的P0口设置红、绿灯、黄灯燃亮时间的功能;为了系统稳定可靠采用了74LS14施密特触发器芯片的消抖电路,避免了系统因输入信号抖动产生误操作;显示时间直接通过AT89C51的P2口输出,由CD4511驱动LED数码管显示红灯燃亮时间。
Single-chip microcomputer to control the design of traffic lights (2009-03-12, Visual C++, 232KB, 下载96次)

http://www.pudn.com/Download/item/id/670504.html

[系统设计方案] hownet

知网完整版,附带相关的各种论文文档,中文语料库
see chinese description (2017-04-04, Python, 17717KB, 下载71次)

http://www.pudn.com/Download/item/id/1491312387875810.html

[系统设计方案] 2008GPS

监控系统中心项目任务书开发文档,对于做GPS总体方案的人来说是不可多得的
Center for Monitoring and Control System project to develop mission book documents, for the GPS to do the whole program is a rare (2009-02-10, Others, 152KB, 下载66次)

http://www.pudn.com/Download/item/id/641304.html

[系统设计方案] multicastpaper

论文标题:组播安全机制的研究与设计 作者:于福海 作者专业:计算机技术 导师姓名:原萍 授予学位:硕士 授予单位:东北大学 授予学位时间:20050701 论文页数:1-61 文摘语种:中文文摘 分类号:TP393.08 关键词:组播通信 安全机制 源认证 组密钥管理 摘要:本文结合课题实际特点,以组播安全为主题,对310网(全军局域网)中的组播提供安全保障进行了系统的研究。 对组播安全的基础理论与方法进行了分析与研究,抽取出了对称加密、非对称加密、单向散列函数、数字签名等安全原语,进而对组播安全系统的基础——PKI技术进行了探讨。 在对相关组播技术与协议的分析过程中,讨论了组播通信和组播协议的过程、特点和安全缺陷,并以此为根据,设计了一个组播源认证、授权和密钥管理中心,并提供了一个兼顾可扩展性、可重用性、可移植性的函数库,为组播过程中组成员身份的认证、组密钥管理、组播传输密钥的受控分发提供了方法。 与此同时,将所提出的组播安全机制解决方案与其他一些常见的安全解决方案在适应的环境、协议、特点等若干方面进行了比较,为组播安全解决方案的选取、确立作了进一步说明。另外,还讨论了有关网络监控、安全值量化等问题,推动了研究的深入开展。
thesis entitled : multicast security mechanism for the research and design of the author : The author in Fuhai professional : Computer Technology instructor name : The original Ping conferring a degree : a master's degree granting units : Northeastern University conferred degrees : 20050701 page thesis :1-61 Potpourri languages : Chinese Digest Key words : Jiangmen Keywords : Multicast Source Authentication security mechanism Group Key Management Abstract : Based on practical issues characteristics of a multicast security as the main theme, 310 network (LAN PLA) multicast to provide security for the systems. Multicast security to the basic theory and methods of analysis and research, taking a symmetric encryption, asymmetric encryption, One-way hash functions, digital signatures and ot (2007-05-08, Others, 4576KB, 下载55次)

http://www.pudn.com/Download/item/id/278140.html

[系统设计方案] callcenter

呼叫中心解决方案,包括 邮政行业,电视购物,汽车4S店,银行系统等。给需要写方案的人进行参考
Call center solutions, including the postal industry, TV shopping, auto 4S shop, bank systems. Need to write programs to reference person (2010-04-22, C++, 26154KB, 下载52次)

http://www.pudn.com/Download/item/id/1138093.html

[系统设计方案] FPGA

为了满足科研与实验需要,提出并实现了一种以FPGA和高速D/A为核心,其结构简单,控制灵活,信号质量高的多功能信号源生成系统。该信号源生成系统能够实时产生中心频率在30~130 MHz的各种雷达、通信、导航和白噪声等信号,且产生的各种信号频率、幅度、相位和其他参数均可控。信号源作为基带信号单元配以混频模块,可实现在任意频段的信号。另外,该信号源还可以作为一个通用平台,通过FPGA内部程序的更新来实现其他复杂信号。
This paper presents and makes a multi-functional signal source based on FPGA and high speed D/A which has simple configuration,flexible controlling,and top-quality signals to satisfy needs of the scientific research and experiment.This signal source can generate several signals as radar signals,communication signals,navigation signals,noise signals and so on.These signals have center frequency between 30~130 MHz,its frequency,power,phase and other parameters are adjustable.This signal source can also ... (2009-06-19, PDF, 323KB, 下载51次)

http://www.pudn.com/Download/item/id/813769.html

[系统设计方案] news-system-cSharp-vs2010

毕业设计-新闻发布系统-c#-sql-asp.net-网站
Graduation- News system-c#-sql-asp.net-website (2011-07-27, SQL, 3528KB, 下载49次)

http://www.pudn.com/Download/item/id/1607922.html

[系统设计方案] gaussian-filters

非线性问题的高斯滤波,包含了贝叶斯递归滤波、高斯-厄尔米特滤波、中心差分滤波、混合高斯滤波等先进滤波方法
Gaussian filters for Nonlinear filtering problems (2012-05-07, PDF, 407KB, 下载47次)

http://www.pudn.com/Download/item/id/1859741.html

[系统设计方案] 基于DEDS派送调度问题的研究

太原理工大学硕 士 学 位 论 文 摘 要 派送调度问题是物流管理领域中一个重要的课题,是大型 超市集团、大型零售连锁店、物流派送中心及工业生产企业共 同存在的问题。随着跨地区、跨地域的经济活动日益加强,迫 切要求解决物资流通当中合理调度运输工具的问题来有效实现 企业生产计划、减少物资库存,从而提高工商企业的生产效率。 目前对于派送调度问题的研究主要集中在对运输工具的配置和 静态调度领域,这些研究工作已经取得了丰富的成果,并且研 究结果也主要应用于决策和管理方面。但是对于运输工具运行 情况变化和派送任务动态产生和调整关注较少,同时,在线派 送调度的计算机系统产品也较少
Taiyuan University of Technology master's degree thesis Abstract delivery scheduling problem is the logistics management field an important issue, is a large supermarket groups, large retail chains, logistics distribution centers and industrial production enterprises to the problems that exist. With trans-regional and cross-boundary economic activities increasing, it is urgent to address the flow of goods among them reasonable means of scheduling problems to the effective realization of production plans to reduce material inventory, thereby improving business productivity. Current scheduling problems for the delivery of concentrated mainly in the transport and distribution of static scheduling fields, these studies have achieved rich results and findings of the study are mainly used in (2005-04-14, MultiPlatform, 132KB, 下载46次)

http://www.pudn.com/Download/item/id/1113450096582690.html

[系统设计方案] Datasheet_PlatformISF

数据中心解决方案,涉及云计算和云存储等,重点是Platform介绍
cloud manager platform product manager (2011-11-15, Visual C++, 124KB, 下载39次)

http://www.pudn.com/Download/item/id/1699578.html

[系统设计方案] ResearchontheProcessofShiptoairMissile

舰空导弹协同制导流程研究,通过对舰空导弹常见制导方法过程的分析,结合网络中心战以及协同作战能力的概念,提出多平台协同制导对 导弹制导模式的要求,对未来舰空导弹协同制导时的制导过程进行初步探讨,并指出实现协同制导需要解决的关键技术。
Ship-to-air guided missile synergistic flow study, through the ship-to-air guided missile common method of analysis of the process, combined with Network Centric Warfare, as well as the concept of Cooperative Engagement Capability, the multi-platform collaborative guided mode of the missile guidance requirements, ship-to-air missile for the future collaboration when the guided-guided process of preliminary study and pointed out that the implementation guidance necessary synergy to solve the key technology. (2009-03-17, Visual C++, 292KB, 下载39次)

http://www.pudn.com/Download/item/id/676400.html
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