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建立标准信息管理系统的难点在于为内容广泛的标准确定统一的描述形式,建立公开高效的标准发布方式和满足用户个性化检索需求.从标准信息的表现形式出发,建立了标准统一描述形式;通过关键词检索服务和命令检索服务建立了高效的标准发布方式;通过身份认证服务和用户订阅服务满足了用户个性化检索需求. 相似文献
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杜人淮 《军队政工理论研究》2014,(3)
建立军官职业化制度是一个复杂的系统工程,外军经过军官职业化制度的长期探索和发展,积累了比较丰富的经验。其基本做法是:把建立科学的分类制度作为前提,把建立完善的任职资格制度作为基础,把建立规范的职业军官制度作为核心,把建立严格的军衔本位制度作为关键,把建立优厚的待遇保障制度作为重要支撑。 相似文献
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建立了基于球齿轮齿盘啮合传动的星载天线定位机构(PMSG)在星间通信过程中的运动学模型,研究了其运动学特性.分别建立PMSG自身运动学模型和卫星运动学模型,在此基础上建立星载PMSG的运动学模型.结合星间通信特点,以两颗中轨卫星为例对PMSG的运动学特性进行了仿真研究.仿真结果验证了文中建立的理论模型,得到了PMSG指... 相似文献
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探讨了建立指挥军官任职培训效果评估量化指标体系应遵循的基本原则,提出了建立该指标体系的模型,运用基于主成分的因子分析方法研究了26项评估指标,确定了反映任职培训效果的5类指标类型,对指标类型的内涵进行了分析,说明建立的指标体系具有实际意义. 相似文献
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杨隽 《中国人民武装警察部队学院学报》2006,22(4):5-7
分析了目前军队院校科研管理资源配置机制中存在的问题及原因,提出了军队院校建立科学高效优化合理的科研管理资源配置机制的基本思路:建立基于学科的资源优化配置机制;建立和完善资源开放平台和共享机制;建立尊重和适应市场规律、科学合理的人才资源配置机制。 相似文献
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红军时期我军逐步确立了党对军队绝对领导的体制;逐步建立和完善了军事工作制度;建立和实行了革命的政治工作制度;逐步建立了独具特点的后勤保障制度。红军制度建设的实践,开创了我军制度建设的先河,奠定了我军正规化建设和依法治军的坚实基础,其中蕴含着丰富的宝贵经验。 相似文献
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随着系统规模、芯片功耗和链路速率的提升,高性能互连网络的整体故障率也不断上升,传统运维方式将难以为继,给高性能计算系统整体可靠性和可用性带来了巨大挑战。针对网络端口阻塞这类严重网络故障,提出无监督算法的预测模型。该模型从历史信息中挖掘征兆性规律并形成新的特征向量,应用K-means聚类算法对特征向量进行学习归类。在预测时,结合端口当前状态,利用二次指数平滑算法对未来状态进行预测,将得到的新特征向量使用K-means算法预判是否会发生阻塞故障。利用拓扑结构信息,分别对叶交换机和根交换机构建预测子模型,进而提升预测的精确率。结果表明,该预测模型能保持在召回率为88.2%的前提下,达到65.2%的准确率,可为运维人员提供有效的辅助。 相似文献
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A promising approach to failure modeling, in particular to developing failure-time distributions, is discussed. Under this approach, system state or wear and tear is modeled by an appropriately chosen random process—for example, a diffusion process—and the occurrences of fatal shocks are modeled by a Poisson process whose rate function is state dependent. The system is said to fail when either wear and tear accumulates beyond an acceptable or safe level or a fatal shock occurs. This approach has significant merit. First, it provides revealing new insights into most of the famous and frequently used lifetime distributions in reliability theory. Moreover, it suggests intuitively appealing ways for enhancing those standard models. Indeed, this approach provides a means of representing the underlying dynamics inherent in failure processes. Reasonable postulates for the dynamics of failure should lend credence to the prediction and estimation of reliability, maintainability, and availability. In other words, accuracy of representation could lead to better, more reliable prediction of failure. 相似文献
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A framework involving independent competing risks permits observing failures due to a specific cause and failures due to a competing cause, which constitute survival times from the cause of primary interest. Is observing more failures more informative than observing survivals? Intuitively, due to the definitiveness of failures, the answer seems to be the former. However, it has been shown before that this intuition holds when estimating the mean but not the failure rate of the exponential model with a gamma prior distribution for the failure rate. In this article, we address this question at a more general level. We show that for a certain class of distributions failures can be more informative than survivals for prediction of life length and vice versa for some others. We also show that for a large class of lifetime models, failure is less informative than survival for estimating the proportional hazards parameter with gamma, Jeffreys, and uniform priors. We further show that, for this class of lifetime models, on average, failure is more informative than survival for parameter estimation and for prediction. These results imply that the inferential purpose and properties of the lifetime distribution are germane for conducting life tests. © 2013 Wiley Periodicals, Inc. Naval Research Logistics, 2013 相似文献
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张连民 《中国人民武装警察部队学院学报》2001,17(3):25-26
通过对防火设备、灭火装备的费用估算,介绍如何利用数学建模的方式进行消防设备费用估算的具体方法,并对火灾过程中装备费用的精确估算方法进行了初步探讨. 相似文献
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John M. Cozzolino 《海军后勤学研究》1968,15(3):361-374
The “infant mortality” effect observed in the statistical treatment of reliability consists of a decreasing with age of the conditional probability of equipment failure (failure rate). One widely applicable explanatory hypothesis is that of population heterogeneity. This is developed here as a basis for several specific models of decreasing failure rate processes. Since, in the case of repairable devices, decreasing failure rate is often observed after the occurrence of failure and repair, consideration is extended to include repair in an explicit way. This union of failure and repair models is a fruitful one in view of the interaction between the two processes and gives a complete picture of the life of the device in terms of a stochastic process, usually with non-independent interfailure times. Four models, of particular significance due to their plausibility, mathematical tractability, and frugality of parameterization, are presented. 相似文献
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在剖析柔性加工设备机电系统结构、信息传递链等基础上,建立柔性加工设备机电系统较精确的动力学模型,并研制相应硬件,实现实时在线模型参数辨识,排除变工况与加工过程的时变性对状态监测与故障诊断的影响,为实现柔性加工环境下多变工况加工过程的实时状态监测、故障诊断与故障预警打下基础。 相似文献
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根据激光测距仪获得的目标斜距,建立实时确定目标速度和过航斜距的数学模型,并提出解决角速率火控系统中普遍存在的计算延迟、预测精度不高和弹道气象修正困难等问题的方案。 相似文献
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装备维修中备件需求率的预计方法 总被引:6,自引:1,他引:5
通过研究装备维修过程中器件的固有可靠性和维修性,着重分析了影响维修器件需求率的主要因素.利用系统建模和仿真的方法,分别针对耗损类型器件和可修复类型器件建立了相应的需求数学模型,最后给出了维修备件需求率的预计方法. 相似文献