共查询到19条相似文献,搜索用时 78 毫秒
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提出了Web服务器技术应用于网管及改进现有网管数据查询的思路,介绍了改进前后的硬件配置和相应数据库管理系统的选用,对Web.PB和Intrabuilder作出简要说明和比较,指出采用WindowsNT建立Web服务器的好处。 相似文献
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提出了Web 服务器技术应用于网管及改进现有网管数据查询的思路,介绍了改进前后的硬件配置和相应数据库管理系统的选用,对Web.PB和Intrabuilder作出简要说明和比较,指出采用WindowsNT建立Web服务器的好处。(ed) 相似文献
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针对基于软交换的集群媒体服务器的系统特征,本文提出了一种LRV(Limited Resource Vector)负载均衡算法,该算法考虑了系统中资源的协调使用并有效防止了系统性能的剧烈变化.通过在集群媒体服务器负载均衡系统Petri网模型上的大量仿真模拟,对LRV负载均衡算法与其他传统负载均衡算法在异构环境下的均衡能力、系统吞吐量、系统响应时间和性能平稳性几个方面做了比较和分析.结果表明,LRV算法具有优越的性能,对集群媒体服务器的异构环境有良好的适应能力. 相似文献
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文中基于Linux操作系统,介绍了在Linux下实现Web服务器的一种方法。通过对HTTP协议的分析,给出了Web服务器的实现细节。在一个局域网中,将此Web服务器程序运行在一台装有Ubuntu Linux的电脑上,并通过局域网中其他计算机上的浏览器正常访问,验证了文中所实现的Web服务器的正确性。 相似文献
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选择分模块的数据通道作为高层次综合的目标结构,完整地定义了同时实现算子调度和数据流图划分的高层次综合算法,并提出一种有效的启发式求解方法.与传统的结构相比,由于在关键路径中消除了全局连线的延时,分模块的结构可以有效地减小时钟周期、优化电路性能.实验结果验证了该方法的有效性. 相似文献
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选择分模块的数据通道作为高层次综合的目标结构,完整地定义了同时实现算子调度和数据流图划分的高层次综合算法,并提出一种有效的启发式求解方法.与传统的结构相比,由于在关键路径中消除了全局连线的延时,分模块的结构可以有效地减小时钟周期、优化电路性能.实验结果验证了该方法的有效性 相似文献
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《Very Large Scale Integration (VLSI) Systems, IEEE Transactions on》2009,17(9):1297-1303
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在数据网格应用中,数据会由于性能和可用性等原因进行复制.如何使数据复本合理分布以降低通信开销是数据网格系统需要解决的重要问题.本文针对一种简化的数据网格环境,考虑存储资源代理对数据的访问频率和代理间的网络性能,提出一种填空式数据副本分配算法(CDRDA).通过该算法得到的数据副本分配,构成多级虚拟存储架构.数据副本根据被存储资源代理访问的频率分布在访问开销小的节点上,从而使系统的整体访问效率达到近似最优. 相似文献
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Algorithm and Architecture of Fully-Parallel Associative Memories Based on Sparse Clustered Networks
Hooman Jarollahi Naoya Onizawa Vincent Gripon Warren J. Gross 《Journal of Signal Processing Systems》2014,76(3):235-247
Associative memories retrieve stored information given partial or erroneous input patterns. A new family of associative memories based on Sparse Clustered Networks (SCNs) has been recently introduced that can store many more messages than classical Hopfield-Neural Networks (HNNs). In this paper, we propose fully-parallel hardware architectures of such memories for partial or erroneous inputs. The proposed architectures eliminate winner-take-all modules and thus reduce the hardware complexity by consuming 65 % fewer FPGA lookup tables and increase the operating frequency by approximately 1.9 times compared to that of previous work. Furthermore, the scaling behaviour of the implemented architectures for various design choices are investigated. We explore the effect of varying design variables such as the number of clusters, network nodes, and erased symbols on the error performance and the hardware resources. 相似文献
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基于数据挖掘的Web服务器攻击检测 总被引:1,自引:0,他引:1
随着Web技术的飞速发展,越来越多的单位使用Web方式为用户提供服务,黑客的矛头也逐渐转向了Web服务器。文中研究了如何使用数据挖掘的方法对Web服务器日志进行安全性分析,从而快速发现攻击,并针对Web服务器日志特有的格式,对现有的基于相似系数的异常点检测算法进行了改进,使其符合研究的要求,同时构建了两个安全性分析的数据挖掘模型。通过对现有Web日志记录的挖掘,验证了所述方法的可行性。 相似文献
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Most of the emerging content-based multimedia technologies are based on efficient methods to solve machine early vision tasks. Among other tasks, object segmentation is perhaps the most important problem in single image processing. The solution of this problem is the key technology of the development of the majority of leading-edge interactive video communication technology and telepresence systems. The aim of this paper is to present a robust framework for real-time object segmentation and tracking in video sequences taken simultaneously from different perspectives. The other contribution of the paper is to present a new dedicated parallel hardware architecture. Its composed of a mixture of Digital Signal Processing (DSP) and Field Programmable Gate Array (FPGA) technologies and uses the Content Addressable Memory (CAM) as a main processing unit. Experimental results indicate that small amount of hardware can deliver real-time performance and high accuracy. This is an improvement over previous systems, where execution time of the second-order using a greater amount of hardware has been proposed.Mahmoud Meribout (BS85, M91). Received the PhD degree in Electronic Engineering from the University of Technology of Compiegne (France), in January 3rd 1995. He worked one year as an Associate Researcher, where he has been involved in some industrial projects related to hardware board design and video processing. FromNovember 1995 to October 2000, he has beenworking in Japan, with NTT and NEC corporations respectively, where he has been involved in several projects related to hardware & software design of next generation multimedia and networking equipments. He is holding several Japanese and American patents related to this particular topic. In 1998, he has received the NTT best award for his research and development records.Maamouru Nakanishi received the B.S. and M.S. in Electronics in 1985 and 1987 respectively, all from Kyoto University. Since 1987, he has been engaged in R&D of parallel processing architectures, memory-processor integration technology at NTT Corporation (Tokyo, Japan), when he has been involved in research on Advanced Content Addressable Memory applied to video processing. In 1998, he has received the NTT best award for his research and development records. 相似文献