人手操作的联体计算

机器人的一个重要理论问题是如何控制机械手以获得所需要的运动。本文将人手操作的基本运动,抽象为具有七个构件而有九个自由度的刚体系统,严格地分析了这些运动,并根据实际情况考虑到各构件的重力、控制力和摩擦阻力,因此能完成人手操作的多种功能。而为了便于在计算机上实施运算利用Kane方程建立了以广义坐标表达的运动微分方程,这可作为分析机械手运动的理论依据。     

基于频率补偿的时延估计方法

由于2个测量站的通道幅相不一致而导致送给时延估计器的两路信号的频率有差异,继而影响时延估计和系统定位精度。首先理论推导了频率差异是如何影响广义相关时延估计的,接着应用频域相关函数对频率差异做准确估计和补偿,最后给出了频差补偿后的时延估计方法。以4种常用通信信号为例,仿真验证了不同信噪比下所提出方法的正确性和有效性。     

Some probability functions in reliability and their applications

There has been much research on the general failure model recently. In the general failure model, when the unit fails at its age t, Type I failure (minor failure) occurs with probability 1 ? p(t) and Type II failure (catastrophic failure) occurs with probability p(t). In the previous research, some specific shapes (constant, non‐decreasing, or bathtub‐shape) on the probability function p(t) are assumed. In this article, general results on some probability functions are obtained and applied to study the shapes of p(t). The results are also applied to determining the optimal inspection and allocation policies in maintenance problems. © 2006 Wiley Periodicals, Inc. Naval Research Logistics, 2007     

试论公安现役本科院校基础课程改革目标

公安现役本科院校基础课程的改革应当确立一定的目标,这种目标的确立应当以其特定的人才培养目标为依据,坚定不移地围绕基础与特色做文章,并逐步构建基础课程的教育平台。     

Designing acceptance sampling schemes for life testing with mixed censoring

Mixed censoring is useful extension of Type I and Type II censoring and combines some advantages of both types of censoring. This paper proposes a general Bayesian framework for designing a variable acceptance sampling scheme with mixed censoring. A general loss function which includes the sampling cost, the time‐consuming cost, the salvage value, and the decision loss is employed to determine the Bayes risk and the corresponding optimal sampling plan. An explicit expression of the Bayes risk is derived. The new model can easily be adapted to create life testing models for different distributions. Specifically, two commonly used distributions including the exponential distribution and the Weibull distribution are considered with a special decision loss function. We demonstrate that the proposed model is superior to models with Type I or Type II censoring. Numerical examples are reported to illustrate the effectiveness of the method proposed. © 2004 Wiley Periodicals, Inc. Naval Research Logistics, 2004     

从《孙子兵法》管理思想看密切官兵关系的重要性

《孙子兵法》作为兵学圣典,对当前部队的日常管理具有重要的指导作用。从《孙子兵法》对自古以来官兵紧张关系的具体描述,剖析当前官兵关系紧张的成因,探讨科学解决官兵紧张关系的方法。     

2-一致光滑Banach空间中k-严格伪压缩半群公共不动点的隐格式迭代算法

对于Banach空间中女一严格伪压缩半群的公共不动点给出了隐格式迭代算法,证明了一个强收敛定理,推广并扩展了相关结论。     

试论“以德治国”的基本方略

江泽民总书记提出了"以德治国"的重要思想."以德治国"有利于全社会正确估量道德的社会作用,进一步增强全党全国重视道德建设的自觉意识;有利于加强科学正确的人生观、价值观、道德观的教育和塑造;有利于改善党风和社会风气,清除消极腐败现象,有利于塑造正确的人生观、价值观、道德观.     

Keeping David From Bathsheba: The Four-Star General’s Staff as Nathan

Readers of reports on ethical failures by four-star general officers must wonder, “Don’t they have staffs to ensure that the general follows ethics rules?” The Department of Defense publishes robust ethics guidance in several documents; however, a staff’s best efforts to implement this guidance may fail to make an impression on a senior leader who is susceptible to the “Bathsheba syndrome,” an allusion to the biblical account where the prophet Nathan rebuked King David for his moral failings. This paper proposes a methodology to enable senior headquarters staffs to play the role of Nathan in supporting ethical behaviors by high-level officers. It examines the mechanisms that embed ethical behavior within members of those staffs in carrying out their three principal roles of advising, scheduling, and transporting the four-star officer. The authors offer a framework based on an ethical infrastructure of organizational climate that focuses the staff’s daily efforts to mitigate risk across seven ethical “danger areas” that threaten ethical failures by senior officers.     

基于相关分析的坦克装甲车辆动载荷测试方法

提出了一种履带车辆动载荷的测量方法,该方法利用虚拟样机技术,根据虚拟实验所测得负重轮轮轴上的载荷和车体上特定测点的加速度进行统计分析,推导出二者之间的统计相关函数关系。在实车试验时,仅测量车体相应测点的加速度,再利用所得到的与动载荷相关关系间接测量负重轮上的输入载荷。其优点是可以不借助于测量轮进行载荷测量,具有一定的经济性和可操作性。