目的 :为适应影像归档与传输系统(picture archiving and communication systems,PACS)的建设需要,利用万兆以太网组网技术,对医院原有网络进行升级改造。方法:通过对某院网络现状和PACS网络需求的分析,设计了万兆网络升级改造3个方案,...目的 :为适应影像归档与传输系统(picture archiving and communication systems,PACS)的建设需要,利用万兆以太网组网技术,对医院原有网络进行升级改造。方法:通过对某院网络现状和PACS网络需求的分析,设计了万兆网络升级改造3个方案,通过综合对比分析3个方案的优缺点,并根据实际情况和预算按照第3方案进行了网络改造的实施。结果:满足了PACS万兆网络的需要,从整体上消除了网络的瓶颈,实现了医院网络的可靠性、安全性以及可扩展性。结论:万兆网络升级改造为医院提供了高带宽、高稳定性和高可靠性的数据传输网络平台。展开更多
With the evolution of 10-gigabit Ethemet passive optical network （10G-EPON）, the traffic-load prediction ability is necessary to support soaring services traffic with diversified characteristics and requirements. As...With the evolution of 10-gigabit Ethemet passive optical network （10G-EPON）, the traffic-load prediction ability is necessary to support soaring services traffic with diversified characteristics and requirements. As a strong candidate to be used for the traffic-load prediction, the echo state network （ESN） may face the pseudo-regression problem and need to be improved for the better traffic-load prediction. To overcome this problem, this paper proposes an ESN based traffic-load prediction scheme using Bayesian theory in 10G-EPON for future-proof. In this proposed approach, Bayesian probability is introduced into the ESN and is used to improve the performance of ESN. According to the architecture between optical line terminal （OLT） and optical network units （ONU） in 10G-EPON, an ESN based on the Bayesian theory （B-ESN） is realized and the B-ESN based traffic load prediction scheme is also developed in OLT. Experiment results show that the proposed scheme can greatly better the accuracy of traffic-load prediction with lower complex degree.展开更多
现代企业的数据量大约每6个月就会翻一倍，因此需要一种有效的方式去存储和保存这些数据。当前网络存储的主要方式有：直接连接存储(DAS)、网络连接存储(NAS)和存储区域网络(SAN)。文中介绍了这3种存储技术的特点，并比较了各自的优劣...现代企业的数据量大约每6个月就会翻一倍，因此需要一种有效的方式去存储和保存这些数据。当前网络存储的主要方式有：直接连接存储(DAS)、网络连接存储(NAS)和存储区域网络(SAN)。文中介绍了这3种存储技术的特点，并比较了各自的优劣；详细介绍了SAN中基于10GbE(10gigabit Ethemet)的iSCSI(Internet small computer system interface)SAN的优点，指出了它是网络存储发展的趋势。展开更多
文摘目的 :为适应影像归档与传输系统(picture archiving and communication systems,PACS)的建设需要,利用万兆以太网组网技术,对医院原有网络进行升级改造。方法:通过对某院网络现状和PACS网络需求的分析,设计了万兆网络升级改造3个方案,通过综合对比分析3个方案的优缺点,并根据实际情况和预算按照第3方案进行了网络改造的实施。结果:满足了PACS万兆网络的需要,从整体上消除了网络的瓶颈,实现了医院网络的可靠性、安全性以及可扩展性。结论:万兆网络升级改造为医院提供了高带宽、高稳定性和高可靠性的数据传输网络平台。
基金supported by the Hi-Tech Research and Development Program of China (2012AA050804)
文摘With the evolution of 10-gigabit Ethemet passive optical network （10G-EPON）, the traffic-load prediction ability is necessary to support soaring services traffic with diversified characteristics and requirements. As a strong candidate to be used for the traffic-load prediction, the echo state network （ESN） may face the pseudo-regression problem and need to be improved for the better traffic-load prediction. To overcome this problem, this paper proposes an ESN based traffic-load prediction scheme using Bayesian theory in 10G-EPON for future-proof. In this proposed approach, Bayesian probability is introduced into the ESN and is used to improve the performance of ESN. According to the architecture between optical line terminal （OLT） and optical network units （ONU） in 10G-EPON, an ESN based on the Bayesian theory （B-ESN） is realized and the B-ESN based traffic load prediction scheme is also developed in OLT. Experiment results show that the proposed scheme can greatly better the accuracy of traffic-load prediction with lower complex degree.
文摘现代企业的数据量大约每6个月就会翻一倍，因此需要一种有效的方式去存储和保存这些数据。当前网络存储的主要方式有：直接连接存储(DAS)、网络连接存储(NAS)和存储区域网络(SAN)。文中介绍了这3种存储技术的特点，并比较了各自的优劣；详细介绍了SAN中基于10GbE(10gigabit Ethemet)的iSCSI(Internet small computer system interface)SAN的优点，指出了它是网络存储发展的趋势。
