计算分段线性变惯性矩梁变形的新方法

将变刚度梁的挠曲线近似微分方程转化为等刚度梁的挠曲线近似微分方程，用定只分方法直接计算分段线性变惯性矩梁的变形。该方法既可以解这种类型梁变形的静定问题，也可以解其超静定问题。     

地基特性的测试和数学模型的建立

地基是高精度惯性元件测试和研究的关键技术之一。采用将地球脉动的环境干扰作为输入源的测试方案，对研制的地基进行了谱分析，建立了平台的数学模型，为提高地基性能的深入研究提供了依据。     

模糊—PI协调分布式智能控制系统

针对大惯性、大滞后、慢时变的复杂过程,本文提出用FUZZY和PI协调控制的办法,介绍了基本原理,并完成了一个此类的分布式控制系统。     

Theoretical consistency test of steam transport properties

The kinetic theory of polyatomic gases is used to test the mutual consistency of the thermal conductivity, viscosity and specific heat of low-pressure steam from 100° to 700°C. No inconsistency exists within the cited tolerances of the skeleton tables recommended by the Sixth International Conference on the Properties of Steam, but there is some basis for suspecting that the high-temperature thermal conductivity values are slightly low. Methods for tightening the consistency bounds are suggested.     

基于速度夹角的粒子群协同优化算法

粒子群算法（PSO）是一种随机全局优化算法，在许多领域得到了广泛应用。针对PSO存在易陷入局部极值、进化后期收敛速度缓慢的缺点，提出一种基于速度夹角的粒子群协同优化算法（V-PSCO），并且引入了一种基于高斯分布的累积分布函数的惯性权重调整策略。将V-PSCO用于几种典型函数的优化问题，结果表明，V-PSCO具有更强的全局搜索能力，优化性能明显提高。     

Composite rigid body formalism for flexible multibody systems

The paper describes the extension of the composite rigid body formalism for the flexible multibody systems. The extension has been done in such a way that all advantages of the formalism with respect to the coordinates of large motion of rigid bodies are extended to the flexible degrees of freedom, e.g. the same recursive treatment of both coordinates and no appearance of O(n ³) computational complexity terms due to the flexibility. This extension has been derived for both open loop and closed loop systems of flexible bodies. The comparison of the computational complexity of this formalism with other known approaches has shown that the described formalism of composite rigid body and the residual algorithm based on it are more efficient formalisms for small number of bodies in the chains and deformation modes than the usual recursive formalism of articulated body inertia.     

激光陀螺漂移数据的自适应Kalman滤波

针对Sage-Husa自适应Kalman滤波算法存在不能同时估计系统过程噪声方差和量测噪声方差的问题,结合激光陀螺漂移数据的特点,设计了2种改进的Sage-Husa自适应Kalman滤波算法:系统过程噪声时变的自适应滤波算法和系统过程噪声与量测噪声统计特性分开估计的并行Sage-Husa自适应滤波算法。仿真结果表明:所述方法改进算法能够有效提高数据精度,且对系统的初值不敏感。     

The effects of attention inertia on advertisements on the WWW

When a viewer browses a web site, one presumably performs the task of seeking information from a sequence of scattered web pages to form a meaningful path. The aim of this study is to explore changes in the distribution of attention to banner advertisements as a viewer advances along a meaningful path and their effects on the advertisements. With aid of an instrument called eye-tracker, a laboratory experiment was conducted to observe directly the attention that subjects allocate along meaningful paths. Our results show that at different levels of depth in a meaningful path, the amount of attention allocated to the content of a web page is not the same, regardless of whether attention indexes were based on dwell time or the number of fixations.     

剪切变形和转动惯性矩对弹性机械臂动力响应的影响

对Timoshenko梁、Rayleigh梁和Benoulli-Euler梁动力学模型进行数值仿真和比较,分析了剪切变形和转动惯性矩对弹性机械臂动力响应的影响,得出剪切变形、转动惯性矩只对短粗梁有较大影响,对细长梁影响很小,可以忽略不计.     

惯量任意符号模式的有理数实现

设A是一个n阶符号模式,称三元数组的集合i(A)={i(B)|B∈Q(A)}为符号模式A的惯量.若对任意满足r s t=n的非负三元数组(r,s,t),都有(r,s,t)∈i(A),则称A是惯量任意符号模式.本文研究n(n≥2)阶惯量任意符号模式Sn,证明了Sn对任意惯量都存在有理数实现.