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详细介绍了屏幕监控软件的设计思路和开发技术。使用WinSock API接口和MFC网络编程技术,系统采用C/S模式,基于UDP协议进行通信,客户机端(Client)通过Winsock发送抓取监控屏幕的指令,服务器端(Server)接收服务器端传来的指令抓取屏幕,并将其转化为JPEG数据流,向服务器端传输图像数据流。实验结果表明,该方法能高质量实时的对计算机屏幕进行监控。 相似文献
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基于TCP和UDP混合协议的远程控制软件的设计与实现 总被引:1,自引:0,他引:1
针对目前网络远程控制软件存在的数据传输问题,提出一种在Windows系统平台下运行的基于TCP和UDP混合协议的远程控制软件的设计思路与开发技术。使用柯达公司的ImgEdit控件对截屏后的图像文件进行了压缩,便于数据的传输;系统使用Winsock网络编程技术,基于C/S模式,Client端调用Winsock发送相关控制命令,Server端主要运用Winsock和API函数实现远程屏幕抓取、控制操作和数据传输等功能。实验结果表明,该方法能方便、快捷地实现远程计算机的控制以及数据的传输,从而为远程智能控制的发展提供了发展方向。 相似文献
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夏祖柱 《电脑编程技巧与维护》2001,(8)
第三讲网络编程
本讲结合狼与猎狗游戏连机对弈功能的实现,介绍了WinSock编程的机理,详细讲解了WinSock编程的方法与技巧,同时还介绍了一些高级的WinSock编程知识,对其他的网络编程组件也作了各有侧重的介绍.力图通过此讲,让读者了解有关的网络编程知识,并能进行WinSock编程,编写简单的网络应用程序. 相似文献
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李来新 《电脑编程技巧与维护》2001,(11):86-92
本人在看了元晋豫同志在《电脑编程技巧与维护》2001年第三期发表的“用VB5开发多功能网络实时监控系统”文章之后,按照资料介绍进行了实地编程测验,发现屏幕抓取之后,在控制台显示不正确,后经检查发现,其工作站端窗体的Scalemode属性未进行设置,应设置成3-pixel,此后虽然屏幕传递正确,但是在不同分辨率及不同颜色设置的两台电脑之间,抓取的屏幕无法正确显示,本人就此对元晋豫同志的代码做了进一步修改,用以实现在不同分辨率的两台电脑之间能够正确传递抓取的屏幕。 相似文献
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夏祖柱 《电脑编程技巧与维护》2001,(8):5-8
第三讲 网络编程 本讲结合狼与猎狗游戏连机对弈功能的实现,介绍了WinSock编程的机理,详细讲解了WinSock编程的方法与技巧,同时还介绍了一些高级的WinSock编程知识,对其他的网络编程组件电作了各有侧重的介绍。力图通过此讲,让读者了解有关的网络编程知识,并能进行WinSock编程,编写简单的网络应用程序。 网络技术堪称为当今计算机领域、最活跃、最为看好的技术了,越来越多的应用程序也要求具有网络通信、协同处理的功能。多媒体技术也只有真正和网络技术结合起来,才能发出更迷人的光彩。Internet中不同数据的传输是基于不同 相似文献
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Internet网络访问的编程方法 总被引:1,自引:1,他引:0
本文主要讨论用不同的编程方法包括WinSock、Win32网络函数和VC 6.0中MFC封装的WinInet类在客户机上进行Internet网络访问编程。 (1)Windows Sockets规范以Socket接口为范例定义了一套Microsoft Windows下网络编程接口。它不仅包含了Berkeley Socket风格的库函数,也包含了一组针对Windows的扩展库函数,可以利用Windows消息驱动机制进行编程。首先调用WSAStartup函数初始化WinSock.dll,调用Socket来建立无连接套接口,为建立连接,必须调用Connect。第一次,先 相似文献
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基于卫星宽带网络的客户端通信系统的总体设计方案,使用Visual C++语言开发的Windows桌面应用系统,以Microsoft Visual Studio 2005作为开发平台。系统采用Windows Sockets网络编程接口(WinSock API)构建了移动终端与中心主控端之间的通信和控制平台,实现了卫星网络接入终端管控、远程电子白板等功能。 相似文献
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介绍了用MFCWinSock进行网络通信的实现方法。并将WinSock用于网络围棋的开发,实现了网络对弈的功能,对应用WinSock进行网络编程的读者有一定的实际应用价值。 相似文献
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针对嵌入式系统语音信号的采集,采用UDP协议进行数据传输,运用Socket编程保证数据传输的可靠性,实现局域网里端到端的语音通信.主要阐述了如何在Linux开发平台上,利用现有的音频编程和网络编程知识,设计和开发局域网里基于QT的实时语音通信软件. 相似文献
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The interest for effective preventive strategies for slips and falls is growing. Much remains to be done, however, to prevent slips and falls in the traffic environment. Using an appropriate anti-slip device may reduce the risk of slips and falls on different surfaces outdoors during winter. The aim of this study was to evaluate the best anti-slip devices of different designs in the Swedish market on a larger group of healthy individuals in different ages on five different slippery surfaces as a way to develop a standard method to test anti-slip devices. Three different designs of anti-slip devices: heel device, foot-blade device and whole-foot device were evaluated on ice surfaces uncovered or covered with gravel, sand, salt or snow. The evaluations were done according to subject's perceived walking safety and balance, videorecordings of walking postures and movements, time to take on and off each anti-slip device, advantages/disadvantages with each anti-slip device and a list of priorities for own use according to three criteria: safety, balance and appearance. The heel device was perceived to be the most safe on all five surfaces, followed by the toe device and the whole-foot device. The heel device was also perceived to be the one with the best walking balance on uncovered ice and on snow covered ice. There were some significant differences due to gender and age. Most subjects walked with a normal muscle function in the hip and knee when walking with or without an anti-slip device on all surfaces. The heel device was perceived as the most rapid one to take on and the toe device as the most rapid one to take off. All three devices were perceived as having a good foothold. The heel device was perceived to fit the shoe and to be stable at heel-strike. The toe device was easily portable and stable on uncovered ice. The whole-foot device was comfortable to walk with and safe on snow covered ice. The heel device had the highest priority according to walking safety, walking balance and choice for own use. 相似文献
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This paper addresses the problem of a seamless interface between hydrodynamics and structural analyses. A pressure distribution on a hydro model computed from seakeeping analysis needs to be transferred to a structural model for evaluating structural strength and its integrity. However, due to the differences in the computation and representation methods for both analyses, the load on the hydro model may not be correctly transferred to the structural model, leading to a different load distribution on the structural model and resulting in some unbalanced force and moment components. In this paper, a method is proposed to solve this problem. A pressure distribution on the hydro model is mapped on the structural model through projection, and force and moment imbalances on the structural model are eliminated through optimization of the nodal forces on the structural model. Moreover, a viscous force distribution along the center of each member of the hydro model is transferred to the nodal forces on the structural model based on the minimum distance measure with resolving any force and moment imbalance. Examples are presented to demonstrate the validity of the proposed method. 相似文献
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《Robotics and Autonomous Systems》2014,62(4):446-455
Passive dynamic walking is a gait developed, partially or in whole, by the energy provided by gravity. The research on passive dynamic bipedal walking helps create an understanding of walking mechanics. Moreover, the experimental passive dynamic research provides a base to compare and validate computer simulation results. An improved kneed bipedal walking mechanism was designed and built to study the passive gait patterns. The first aim of this study is to determine the equivalency of testing a passive dynamic biped walker on a treadmill to testing on a ramp. Based on the small difference between the gait patterns measured on the two test platforms, testing on a treadmill was found equivalent to testing on a ramp. Gait measurements were then conducted on the treadmill to evaluate the effects of the treadmill inclination angle, mass distribution of the biped, and the length of flat feet on the gait pattern. Results show that most of these parameters had significant effects on the step length, step period and hip velocity of the passive walker. Our experimental results are also compared with previous experimental results. 相似文献
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介绍了一种适用于无线局域网的入侵检测方案。该方案分别实现了无线局域网的主机安全检测和网络安全检测。针对无线局域网的特点,该方案把基于嵌入式的入侵检测系统嵌入到移动终端作为基于主机的入侵检测系统,把基于移动Agent的入侵检测系统安装到MSS(Mobile Support Station,支持移动计算的固定站点)上用于实现基于网络的入侵检测。该入侵检测方案能有效消除无线局域网的来自主机与网络两方面的安全威胁。 相似文献
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科学计算软件快速开发技术的研究 总被引:1,自引:0,他引:1
讨论了C++语言与Matlab语言结合快速开发科学计算软件的优越性和可行性,Visual C 调用Matlab函数的几种方法,其中着重探讨Matlab函数在Visual C 中的编译技术以及如何在Visual C 中调用Matlab Shared M-DII,开发Windows平台独立可执行文件的技术。作为例程给出了Visual C 中开发小波分析软件的步骤和要点,给出了源代码,程序在Win2000系统下成功编译,并能独立运行在Win9x和Win2000操作系统上。 相似文献
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介绍了一种适用于无线局域网的入侵检测方案。该方案分别实现了无线局域网的主机安全检测和网络安全检测。针对无线局域网的特点,该方案把基于嵌入式的入侵检测系统嵌入到移动终端作为基于主机的入侵检测系统,把基于移动Agent的入侵检测系统安装到MSS(Mobile Support Station,支持移动计算的固定站点)上用于实现基于网络的入侵检测。该入侵检测方案能有效消除无线局域网的来自主机与网络两方面的安全威胁。 相似文献
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张凯虹 《计算机与数字工程》2010,38(9):70-72
如何快速开发FPGA测试平台以实现FPGA验证与测试是本文的研究重点。基于PC、ATE与自制应用型DUT板,对FPGA验证与测试开发技术进行研究。PC主要完成测试程序下载与调试验证工作,自制应用型DUT板实现对FPGA的配置,ATE等待FPGA配置完成后进行信号输入与输出验证。基于该理论对Xilinx公司的XC2S200进行了实验,实验表明该方法可行并能快速实现测试开发与芯片验证,且具有很好的通用性,可用于其他FPGA芯片的测试、研究与验证。 相似文献
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单社交网络影响最大化问题已经得到了学术界的广泛关注与研究,然而如今多社交网络之间呈现信息互通的趋势.多社交网络中存在的桥梁用户(Bridge User,BU)(即同时拥有多个社交网络账户的用户),可将信息从一个社交网络分享至另外一个社交网络,信息传播不再局限于单个网络.本文针对多社交网络信息影响最大化进行了相关研究,分析了桥梁用户在多社交网络信息传播中的作用,提出了基于桥梁用户的多社交网络聚合算法,并在得到的聚合图上对多社交网络影响最大化问题进行求解.仿真实验对多社交网络影响最大化问题进行了求解,并证实了桥梁用户在多社交网络信息传播时的作用. 相似文献