柔性机械手加速度反馈抑制振动的机理与稳定性分析

在柔性机械手的控制中,末端加速度反馈是一种抑制振动有效而简便的途径。但直到现在对其中抑制振动和稳定性的机理并不很清楚。本文深入系统地分析了其内在原因,证明其反馈稳定性,并在自行建立的柔性手实验平台上完成了实验证明,得出了几个确定性有实际指导意义的结论     

工业站电气集中设备微机监测系统的设计与实现

给出了工业火车站电气集中设备微机监测系统的设计方案,对系统设计中的抗干扰和系统的功能扩展等问题做了较详尽的研究。     

红军西征战役中民族宗教工作述略

从1936年5月下旬至7月下旬,由红一方面军主力组成的西方野战军,在司令员兼政治委员彭德怀的指挥下,按照党中央和中央军委的周密部署,进行了西征战役,对坚持反共的宁夏军阀马鸿逵、马鸿宾部予以重击,占领了环县、定边、盐池、豫旺等4座县城,开辟了纵横各400里的陕甘宁新根据地.     

Attributing Cyber Attacks

Who did it? Attribution is fundamental. Human lives and the security of the state may depend on ascribing agency to an agent. In the context of computer network intrusions, attribution is commonly seen as one of the most intractable technical problems, as either solvable or not solvable, and as dependent mainly on the available forensic evidence. But is it? Is this a productive understanding of attribution? — This article argues that attribution is what states make of it. To show how, we introduce the Q Model: designed to explain, guide, and improve the making of attribution. Matching an offender to an offence is an exercise in minimising uncertainty on three levels: tactically, attribution is an art as well as a science; operationally, attribution is a nuanced process not a black-and-white problem; and strategically, attribution is a function of what is at stake politically. Successful attribution requires a range of skills on all levels, careful management, time, leadership, stress-testing, prudent communication, and recognising limitations and challenges.     

使用多Agent模型求解N－难题的新方法

借鉴多Ａｇｅｎｔ模型思想给出了求解Ｎ－难题的新方法。将Ｎ－难题分成多个Ａｇｅｎｔ,赋予每个Ａｇｅｎｔ以算法,利用Ａｇｅｎｔ之间的协作和交互有效地进行问题求解。该方法将前人的指数时空复杂度降为多项式时空复杂度,实际实现结果表明了该方法可行、高效。     

军工企业安全标准体系建立初探

建立企业安全生产标准体系，是推动企业建立具有军工特色规范化和标准化的现代企业安全生产管理体系的有效途径。本文分析了军工企业安全生产标准体系建立必要性、原则和要求，阐述了体系结构层次及其建立方法，提出了正确处理与企业安全管理体系衔接和建立动态管理机制等要求。     

浅析提高信息系统软件测试质量的途径

随着信息技术为核心的高新技术在军事信息系统中应用的不断深入，作为信息系统核心部分的软件系统质量成为影响系统效能与可靠性的关键。如何有效保证软件系统质量、提高信息系统的可靠性成为目前我军亟需解决的重要问题。本文从软件工程的角度出发，针对信息系统中的软件系统，结合软件测试技术的发展和我军信息系统的现状，提出了提高军事信息系统软件测试质量的几种途径。     

雷达组网系统标准体系研究

本文探讨了雷达组网系统的标准体系，提出了标准体系结构框架，对标准的采用情况进行了介绍，对标准的需求和发展进行了分析。     

Optimum step‐stress accelerated life test plans for log‐location‐scale distributions

This article presents new tools and methods for finding optimum step‐stress accelerated life test plans. First, we present an approach to calculate the large‐sample approximate variance of the maximum likelihood estimator of a quantile of the failure time distribution at use conditions from a step‐stress accelerated life test. The approach allows for multistep stress changes and censoring for general log‐location‐scale distributions based on a cumulative exposure model. As an application of this approach, the optimum variance is studied as a function of shape parameter for both Weibull and lognormal distributions. Graphical comparisons among test plans using step‐up, step‐down, and constant‐stress patterns are also presented. The results show that depending on the values of the model parameters and quantile of interest, each of the three test plans can be preferable in terms of optimum variance. © 2008 Wiley Periodicals, Inc. Naval Research Logistics, 2008     

铁磁材料裂纹漏磁信号的定量检测

针对无损探伤难于实现定量检测的问题,探讨了基于模式识别进行铁磁材料裂纹漏磁信号定量分析的原理和方法,通过在标准试件上的大量实验及在具有自然裂纹的工件上实际检测,取得了满意效果。