基于PageRank算法的武器装备体系重要节点评估

将武器装备系统抽象为网络节点,利用复杂网络理论研究评估武器装备体系中的重要节点。针对传统PageRank算法在该应用中存在的问题,提出一种修正的PageRank算法。该算法对悬挂节点及有向环状网络节点的重要度评估具备收敛性。仿真实例验证了该修正算法对双目标作战环节点重要度评估的有效性。为了进一步验证所提算法的准确性,引入特征谱理论和移除节点法评估网络的抗毁性。     

Rare‐event component importance for the consecutive‐k system

Various indices of component importance with respect to system reliability have been proposed. The most popular one is the Birnbaum importance. In particular, a special case called uniform Birnbaum importance in which all components have the same reliability p has been widely studied for the consecutive‐k system. Since it is not easy to compare uniform Birnbaum importance, the literature has looked into the case p = ½, p → 1, or p ≥ ½. In this paper, we look into the case p → 0 to complete the spectrum of examining Birnbaum importance over the whole range of p. © 2002 Wiley Periodicals, Inc. Naval Research Logistics 49: 159–166, 2002; DOI 10.1002/nav.10001     

多态关联系统结构特性分析

可靠性分析中，系统的结构函数有两方面的作用，一方面是结合部件可靠度求得系统的可靠度，另一方面是由结构函数分析系统的结构特性。本文通过构造结构函数的差分运算，从系统的结构稳定性、状态吸收能力和结构重要度三个方面对后者进行了讨论。     

网络节点双机容错系统中的重构算法

提出了一种网络节点双机容错系统中的重构算法,详细叙述了重构时序和内存数据的一致性,并给出了算法流程。     

一种故障树模糊重要度分析的新方法

本文在经典故障树重要度分析方法的基础上,引入模糊集合理论,对基于故障树各底事件发生概率为模糊数情形的重要度分析方法作了研究,最后给出了一个应用实例。     

ANFIS网络在舰船维修费用预测中的应用

利用自适应模糊推理系统(ANFIS)的模糊推理能力和学习功能相结合的优点,运用于舰船维修费用预测中.分析了影响维修费用的因素,采用变量投影重要性分析方法(VIP)对影响因素进行评估和筛选,使用ANFIS网络建立模型.通过实际算例进行分析,用历史数据训练ANFIS网络,预测舰船维修费用,在数据样本量小的情况下,较一般神经网络精度有明显提高.     

Quantifying optimal mesh and ring design costs

During the last decade telecommunication operators have been deploying WDM (Wavelength Division Multiplexing) technology to satisfy the exponential growth in global communication. While facilitating the advanced information society of today, this has also led to a higher dependency on the networks, and furthermore the high capacity utilization of optical fibers means that a single link failure will influence many users and enterprises. For these reasons, protection of network connections has become a major competitive parameter for the operators. Currently, the most popular protection method is ring protection, due to its simplicity, requiring only basic management functionality and operating with local restoration control. While many optical rings have been deployed, little work has been published on exactly what the cost of ring networks are, compared to general mesh networks. In this article we perform a quantitative comparison between ring protection and mesh protection, using real world network data and realistic prices for network components. Extending classic LP flow models to take rings and node costs into account, and using a link‐path based mesh network LP model, we are able to perform a total cost comparison of the two architectures, and of manual ring network design. The results suggest that the price of mesh network components must be reduced significantly to be competitive with ring based networks, and also that manual network design does not necessarily lead to the most cost‐efficient designs. © 2004 Wiley Periodicals, Inc. Naval Research Logistics, 2005     

一种面向节点定位的移动信标动态路径规划方法

针对基于移动信标的传感器节点定位问题,提出一种基于在线决策的移动信标动态路径规划方法.针对以往算法大都只适用于节点均匀分布的局限,该方法用移动信标不断获取两跳范围内的未定位节点数目,并向最大覆盖未定位节点方向移动,不需要网络先验信息,即可实现路径的优化.仿真结果表明:与传统方法相比,该方法无需网络的先验信息,在移动路径长度上具有明显优越性,减少了信标的能量消耗,更适用于户外部署的大规模传感器网络.     

基于复杂网络的武器装备重要度评估方法

针对现有武器装备重要度评估方法存在的缺点和不足,基于复杂网络中改进的节点重要度评估指标和方法,建立了武器装备重要度评估模型。该方法不仅描述了武器装备在装备体系中的重要程度,也反映了武器装备失效后的修复情况。最后通过一评估示例,说明了方法的有效性和适应性。     

给定任务和模式下指挥体系节点重要性评估方法

针对一般节点重要度评估方法没有考虑指挥体系网络与外界的交互以及自身运行机制的问题,研究了指挥节点的重要度评估方法,在一般网络结构重要度分析基础上,综合作战任务和指挥模式对节点的需求,提出了作战任务对节点依赖度以及指挥模式对节点依赖度的计算方法,最后设计了评估算法并给出具体算法流程,案例分析结果证明该算法合理、有效。