基于依赖矩阵的Web服务组合故障诊断

为了保证指挥信息系统在动态环境下能够提供持续可靠的组合服务,提出一种利用依赖矩阵对Web服务组合故障原因进行诊断的模型,对依赖矩阵的建立进行了详细说明。然后,基于构造的依赖矩阵,提出改进的贪心算法对失效情况进行探测,并设计了基于二分查找的故障定位算法。实验模拟表明,提出的模型能够利用少量探测就能监测整个服务组合流程的运行情况,并定位找到错误源。     

基于粒子群优化的模糊交通控制器设计

城市中存在着一些关键路口,其交通通畅与否会对周围路网的交通流起着很大的影响,这些路口需要优先保持通畅.针对此情况,设计了基于上下游交通信息的二级模糊交通控制器来对路网进行协调控制.在此基础上,提出了针对交通特性改进的粒子群优化算法（TIPSO）,并采用TIPSO对第一级模糊规则进行优化,实验结果表明TIPSO对模糊规则具有较好的优化效果,能够离线训练,获取到比人工设定的更优的模糊规则.     

New results on rendezvous search on the interval

In a rendezvous search problem, two players are placed in a network and must try to meet each other in the least possible expected time. We look at rendezvous search on a discrete interval in which the players are initially placed using independent draws (usually assumed to be from the same distribution). Some optimal solutions are known if this distribution is uniform, and also for certain other special types of distribution. In this article, we present two new results. First, we characterize the complete set of solutions for the uniform case, showing that all optimal strategies must have two specific properties (namely, of being swept and strictly geodesic). Second, we relate search strategies on the interval to proper binary trees, and use this correspondence to derive a recurrence relation for solutions to the symmetric rendezvous problem for any initial distribution. This relation allows us to solve any such problem computationally by dynamic programming. Finally, some ideas for future research are discussed. © Wiley Periodicals, Inc. Naval Research Logistics 60: 454–467, 2013     

Coordination mechanisms for a three‐stage reverse supply chain to increase profitable returns

In this article, we consider a generic electronic product that can be remanufactured or recycled at the end of its life cycle to generate new profit. We first describe the product return process and then present a customer segmentation model to capture consumers' different behaviors with respect to product return so that the retailer can work more effectively to increase the return volume. In regard to the collaboration between the retailer and the manufacturer, we explore a revenue‐sharing coordination mechanism for achieving a win‐win outcome. The optimality and sensitivity of the critical parameters in four strategies are obtained and examined both theoretically and numerically, which generate insights on how to manage an efficient consumer‐retailer‐manufacturer reverse supply chain, as well as on the feasibility of simplifying such a three‐stage chain structure. © 2012 Wiley Periodicals, Inc. Naval Research Logistics, 2013     

弹丸飞行时间拟合误差对射击诸元误差的影响

分析了基本射表中弹丸飞行时间拟合误差对射击诸元误差的影响,给出了因时间拟合误差引起的射击误差的解析表达,并利用5条典型航路分析了飞行时间拟合误差对射角、射向误差的影响,得出了不同航捷、航高、斜距、目标速度下拟合误差对射击诸元误差的影响关系,从而为确定弹丸飞行时间拟合精度提供依据.     

导弹武器维修保障装备规模优化

维修保障装备是在信息化条件下的导弹武器保持良好技术状态的关键组成部分。首先阐述了维修保障装备的概念,对维修保障装备体系结构进行了描述;然后立足于系统动力学理论,建立了考虑攻防对抗的维修保障装备规模优化SD模型,深入开展了维修保障装备配置仿真分析,得出了一些有意义的结论,并验证了模型及方法的有效性。     

基于AHP与熵权的舰艇编队信息作战能力模糊综合评估

在确立了舰艇编队信息作战能力评估指标体系的基础上,运用AHP和熵权法,得到评价指标的综合权重.通过模糊综合评判,得出综合评判总分.以舰艇编队的信息侦察处理能力为例进行综合评估.最后通过进一步研究分析,构建了一种数学模型,用于找出影响舰艇编队信息作战能力的薄弱指标.     

改进的粒子群神经网络在飞控中的应用

针对BP神经网络对初始值敏感、容易陷入局部寻优且收敛速度较慢,提出用粒子群对神经网络的参数进行优化,同时设计了衰减的指数函数对惯性权重进行动态调整以提高算法性能.并应用该算法对导弹飞控系统的逆误差进行补偿,仿真结果表明,该方法对逆误差进行了有效的补偿,避免了局部寻优并提高了学习效率.     

军用电子机箱模态分析及测试

对某军用电子机箱的固有频率从有限元分析和模态试验测试两个方面进行研究,并将理论分析结果和模态试验测试结果进行对比,确定了电子机箱的固有模态.为今后电子机箱的设计提供了参考依据,为仿真分析提供了有效的有限元建模方法.     

Lost through non-translation: bringing Clausewitz's writings on ‘new wars’ back in

While Carl von Clausewitz has generally been respected as one of the most profound philosophers of war, his expertise has been regarded as somewhat limited if not even irrelevant to the so-called ‘new wars’ of the post-Cold War world. Many scholars in international relations have claimed that ‘new wars’ are essentially ‘post-Clausewitzian’ and ‘post-trinitarian’ in nature, meaning that they are no longer fathomable through a Clausewitzian framework. However Clausewitz's earlier writings were nearly exclusively dedicated to guerrilla warfare, or what he called ‘small wars’. These writings have been largely overlooked by many analysts of contemporary conflicts. By drawing on his rare and untranslated writings, the article uncovers a critical part of Clausewitz's expertise in asymmetric warfare and shows that, far from being irrelevant in an age where interstate warfare is increasingly being replaced by conflicts between states and semi-/non-state actors, Clausewitz's philosophical writings actually shed new light into the particular interactive dynamics generated during wars waged under conditions of asymmetry.