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排序方式: 共有268条查询结果,搜索用时 31 毫秒
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模糊逻辑系统在船舶风险评估中的应用 总被引:4,自引:2,他引:2
为了合理进行船舶风险评估,提出了一种基于模糊逻辑系统的船舶风险评估方法.根据模糊逻辑系统的基本原理,建立了船舶风险评估的模糊逻辑模型;按照国家标准、规范,并结合经验建立了风险指标的模糊集合、风险矩阵及模糊规则,然后进行了模糊推理,得到了系统的风险等级,并制定了预防风险的措施.以某艇消防系统的风险评估为例,证明了其能够合理地评估出系统的风险,可为决策提供参考. 相似文献
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Igor Khripunov 《The Nonproliferation Review》2013,20(2):275-316
The July 2005 terrorist attacks in London demonstrated the resilience of Western society in the face of low-level conventional terrorism. But the psychological damage from the London bombings would likely pale next to the severe, unpredictable, long-lasting effects of a radiological attack. One unique hazard of radiation exposure beyond the obvious physiological effects is that it is colorless, odorless, and tasteless, making it difficult for ordinary citizens to evaluate, quantify, and rationally understand the dangers confronting them. Radiological weapons stand out among the tools available to terrorists for their capacity to inflict far-reaching psychological damage to civilian populaces well beyond the immediate victims. A possible solution to mitigate the psychological consequences is to build a “resilience culture,” an interlocking set of beliefs, attitudes, approaches, and behaviors that help people fare better in any disaster or extraordinary circumstance. The “all-hazards approach,” which emphasizes the identifiable similarities among the “disaster triad”—that is, natural, accidentally man-made, and intentionally man-made disasters—extends to acts of terrorism and could help demystify the fears associated with radiological terrorist weapons. 相似文献
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Nina Wilén 《Defense & Security Analysis》2013,29(2):117-127
The Congolese security sector reform – disarmament demobilisation and reintegration (SSR-DDR) process has suffered from setbacks in its military sector during the last 10 years, such as insufficient funding, lack of coordination and domestic reluctance to major changes, with as a result, a very fragile and disjointed Army. These problems have deepened as officers have defected from the Army and caused new instability in the East of the Congo. This article aims to analyse the recent mutinies and the reaction by the Congolese government by applying a capabilities-based approach in combination with a typology of spoilers. The objective is to identify and classify the spoilers and answer the questions of why they emerge now and how they are dealt with on a national level. From the analysis, the author suggests that there are several spoilers involved in the current situation – the most powerful being the Congolese and the Rwandan governments, prompting the question of whether an international involvement is necessary to solve the problem. 相似文献
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Serkan Eryilmaz 《海军后勤学研究》2013,60(4):313-320
Measuring the relative importance of components in a mechanical system is useful for various purposes. In this article, we study Birnbaum and Barlow‐Proschan importance measures for two frequently studied system designs: linear consecutive k ‐out‐of‐ n and m ‐consecutive‐ k ‐out‐of‐ n systems. We obtain explicit expressions for the component importance measures for systems consisting of exchangeable components. We illustrate the results for a system whose components have a Lomax type lifetime distribution. © 2013 Wiley Periodicals, Inc. Naval Research Logistics, 2013 相似文献
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针对空战对抗的隐蔽作战需求,对战斗机隐蔽接敌方法进行研究。基于战斗机雷达反射截面积的动态特性建立雷达探测威胁模型;以空战态势参数为状态建立接敌引导模型;以给定目标发现概率为暴露阈值进行威胁约束;以最小化接敌过程中累积被发现概率为性能指标;将战斗机隐蔽接敌问题建模为隐蔽性约束下的最优控制问题。为保证算法的实时性和有效性,引入滚动时域控制策略进行在线优化,并采用高斯伪谱法进行数值求解。仿真实验表明,通过路径约束和性能指标双重约束,能有效增强战斗机接敌的隐蔽性,算法实时性能满足战斗机控制的需求。 相似文献
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Julien Malizard 《Defence and Peace Economics》2014,25(6):635-642
France has received little attention in the literature of defense economics, despite some outstanding features of the country’s situation. This study attempts to partially fill this gap with new empirical evidence which evaluates the influence of military expenditure on the unemployment rate between 1975 and 2008. Our estimation is based on the ARDL approach to cointegration. The results reveal that both defense and non-defense spending exert a negative influence on unemployment but that defense spending has a higher negative impact. 相似文献