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本文首先详细介绍了高层建筑转换层的概念、结构特性和设计原则,同时根据转换层的功能特点和要求,介绍其设计要点,包括设计战略、构件选择、配筋设计和轴压比控制要求等重点探讨了转换层结构设计的要点,可供类似工程设计参考。 相似文献
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探究了在车辆监控系统中,采用GPS来获得车辆的位置信息,准确地在监控中心的电子地图上显示和定位的方法,并探究了通过GSM无线通讯技术和组件式GIS对各种移动车辆进行控制、调度、指挥的技术。 相似文献
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反空袭战中,对战区内各种交通工程进行重点防护目标选取是一个重要的综合评价问题。通过分析PCA原理,用PCA方法和Matlab工具求解反空袭战中交通工程防护目标重要性的排序问题,并可根据交通工程目标得分的排列顺序,选择出若干需要重点防护和抢修的国防交通工程目标。 相似文献
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Anticipatory optimal network control is defined as the problem of determining the set of control actions that minimizes a network-wide objective function. This not only takes into account local consequences on the propagation of flows, but also the global network-wide routing behavior of the users. Such an objective function is, in general, defined in a centralized setting, as knowledge regarding the whole network is needed to correctly compute it. Reaching a level of centralization sufficient to attain network-wide control objectives is however rarely realistic in practice. Multiple authorities are influencing different portions the network, separated either hierarchically or geographically. The distributed nature of networks and traffic directly influences the complexity of the anticipatory control problem.This is our motivation for this work, in which we introduce a decomposition mechanism for the global anticipatory network traffic control problem, based on dynamic clustering of traffic controllers. Rather than solving the full centralized problem, or blindly performing a full controller-wise decomposition, this technique allows recognizing when and which controllers should be grouped in clusters, and when, instead, these can be optimized separately.The practical relevance with respect to our motivation is that our approach allows identification of those network traffic conditions in which multiple actors need to actively coordinate their actions, or when unilateral action suffices for still approximating global optimality.This clustering procedure is based on well-known algebraic and statistical tools that exploit the network’s sensitivity to control and its structure to deduce coupling behavior. We devise several case studies in order to assess our newly introduced procedure’s performances, in comparison with fully decomposed and fully centralized anticipatory optimal network control, and show that our approach is able to outperform both centralized and decomposed procedures. 相似文献
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采用复杂网络理论和方法,以CRH3型动车组为例,通过构建我国高速列车部件之间的维修关系网络,计算和分析该网络的节点平均度、平均路径长度、网络密度及网络集聚系数,从而揭示该网络的拓扑特征.研究结果表明:CRH3型动车组部件维修关系网络的平均路径长度较短,网络密度较大,且节点度的分布服从指数分布,是一个小世界网络;为利于高速列车投入运营后的维修资源分配和维修策略制定以及降低维修费用,在高速列车设计阶段应该考虑降低高速列车维修时部件间的依赖关系;对于节点度较高或是节点集聚系数较大且影响到列车安全运行的部件,应加大维修资源的分配力度. 相似文献
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基于独立分量分析的诱发电位信号提取方法 总被引:1,自引:0,他引:1
诱发电位(EP)信号在检测神经系统状态时有重要意义,但EP信号总是没在自发脑电波(EEG)信号中,因此,为利用EP信号诊断神经系统的损伤和病变,需要从二的混合信号中提出EP信号。独立分量分析(ICA)是一种新近发展起来的信号分离方法。本反ICA方法应用于EP信号的提取,并与传统的滤波方法进行了比较。计算模拟表明,采用ICA方法进行噪声分离的结果明显优于信号滤波方法。 相似文献
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