共查询到20条相似文献,搜索用时 187 毫秒
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双机热备份技术是目前主流应用的服务器容错技术的一种,具有安装维护简单、稳定可靠、监测直观等优点,满足了当前大多数应用系统的需求,双机热备份有3种模式,主从模式应用较广,双机技术需要依靠双机软件来实现。 相似文献
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本文给出超短波综合测控系统中微机系统双机热备份问题的提出、发展近况、双机热备份的技术关键以及一般解决双机热备份的方法。最后给出一种超短波综合测控系统中微机系统双机热备份的实现方法。 相似文献
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计算机容错技术可以提高系统的可靠性、稳定性。本文讲述了容错技术的概念和主要分类,然后对比了两种服务器容错技术:双机热备份和单机容错。最后指出单机容错服务器是未来发展趋势。 相似文献
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高可用性系统服务器双机热备份技术的研究 总被引:2,自引:0,他引:2
主要介绍了高可用性系统服务器双机热备份解决方案,着重阐述了基于在线互连方式的双机热备份技术,提出了双机控制逻辑实现方法,最后给出了实际测试得出的双机切换的功能和性能指标。 相似文献
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本文研究了双机冗余系统的容错技术和方法,提出了基于热备份冗余模式的双任务管理系统方案,主要内容包括冗余方案的选择,双任务管理系统的硬件设计和软件设计三个方面. 相似文献
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随着运营商IP承载网络的建设和发展,在网络的骨干层和核心层,已基本实现了网络设备的大容量、多平面、异局址备份部署,备份技术较为全面。在网络的汇聚层,由于单设备承载用户较少,同时通过多链路、多路由的业务接入,备份机制相对完善,但在业务接入控制层时,由于单设备承载用户多,且没有良好备份机制,单点故障容易导致业务中断,用户感知强烈。文中通过对业务接入控制层BRAS双机备份部署方案的研究,围绕目前主流的备份方式,进行双机热备方案优劣对比,对双机备份网络架构改造进行研究,力图为主流运营商进行后续BRAS的双机备份部署提供借鉴和参考。 相似文献
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分析了在二值计算机上实现多值逻辑运算与多值逻辑表示方法的关系,在此基础上,给出一种特殊多值逻辑值的二进制编码,并提出一种在二值计算机上建立起完备的多值逻辑运算集的方法,从而实现了在二值计算机上有效地解决实际多值逻辑问题。 相似文献
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A method for the exact solution of two-dimensional diffraction problems is presented. The method allows the problems to be solved practically in closed form and all the required calculations to be realized using small computers only. Among the most interesting diffraction problems solved by this method are: a thick semi-insulating plate, an infinite periodic corrugated structure, and an echelett 相似文献
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Distributed Computing Attacks on Cryptographic Systems 总被引:1,自引:0,他引:1
It is now possible to link large numbers of desktop computers to achieve massive computing power. This paper briefly describes approaches taken to attack cryptographic algorithms using this method. The approach taken by BT Laboratories in the successful attack on an elliptic curve cipher is detailed. Finally a proposal for the architecture needed to recruit unused computing power for similar problems is given. 相似文献
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为了提高高位截瘫和上肢双肢残疾人士的生活质量,使他们能够使用电脑,控制电视和空调等家用电器,本文提出了一种基于物联网的智能家居系统的设计方案,实现了常用家电的联网控制,使电脑、电视、空调等常用家电的控制摆脱对人双手的依赖。该智能家居系统使高位截瘫和上肢双肢残疾的人只通过头部的移动就能冲浪上网,控制电视、空调。 相似文献
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本文针对现有电子束曝光机在图形处理过程中存在的一些问题,提出了以辅配微机来增强原机处理能力的方法。对曝光机的图形处理过程及异机通讯等问题作了较详细的介绍。 相似文献
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In this note, we are concerned with the asymptotic approximation of a class of double integrals which can be represented as an angular-spectrum superposition. These double integrals typically appear in electromagnetic scattering problems. Based on the synthetic manipulation of the method of steepest descent path, approximate expressions of the double integrals are derived in terms of the leading term of the contribution to the asymptotic expansions. 相似文献
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介绍了在非管理员权限下分发安装客户端程序的三种已知方法,重点说明带参数运行的域脚本分发方式,并对三种方式做了评价。同时提出了一种创新的改进方法,将域管理员账号密码等信息打包到客户端程序中,解决域分发客户端程序的几种常见问题。 相似文献
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《Microwave Theory and Techniques》1962,10(2):133-138
The general availability of large high-speed computers has made the use of series expansions in complicated field theory problems feasible even when these series do not converge rapidly. This paper outlines the method and illustrates its application to the solution of a problem in cylindrical coordinates. At the same time, the errors inherent in this method of solution are indicated and estimates are made of their magnitudes. A comparison of the method with Slater's perturbation theory is made. 相似文献
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A new method has been developed for compressing the matrices that occur in most integral-equation-based computer programs. This method is easy to interface with existing computer programs, and allows them to run significantly faster and with significantly less memory. This method applies not only to electromagnetic and acoustic computation, but also to most programs involving a Green's function or any integral equation with a kernel having some smoothness properties. Our numerical computations, running on a high-end personal computer, have achieved compression ratios of fifty times, and compressed inversion of the matrices fifty times faster than by previous methods. For larger problems, solved on high-performance computers, these ratios would improve to about one thousand to one for larger moment method problems. 相似文献
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The factors motivating the transition, presently underway, from 5-V to 3-V power supplies for integrated circuits are examined. Such a change would favorably impact the size, weight, and battery life of battery-operated equipment, as well as reduce power consumption and alleviate heat problems in workstations and computers. Standardization issues are considered, and the timing of the transition and the problems that will be encountered are discussed 相似文献