机构运动参数测定和动平衡实验创新研究

在分析机构运动参数测定和机构动平衡传统实验方法存在问题的基础上，借鉴广义质量法求解机构动平衡问题的思想，介绍了基于“随机信号与振动分析系统CRASV5．1”的信号采集和处理方法，建立了机构动平衡方程，提出了一种新的采用“随机信号与振动分析系统CRASV5．1”进行机构运动参数测定和机构动平衡实验。     

GP-内射半模与n-P-内射半模

给出了GP-内射半模与n-P-内射半模的定义,并分别给出了GP-内射半模与广义PP-半环的关系;n-P-内射半模与n-广义PP-半环的关系.     

Performance Analysis of Two CFAR Detectors in Clutter Edge Situation

1. INTaODUCTIONThe task of radar receiver is to detect the useful targets in clutter bedground. In the automatic radax detedionsystem, the decision whether there eclat targets is made according to the decision criterion by using a detedinntbleshold. For a fixed detection threshold, if the interference power level increases several dB, the false alarmrate will seriously increase. Therefore, to extract the useful signals in strong interference environment, hot Onlyadequate signal to noise r…     

Chaotic Behavior of a Generalized Hamiltonian System and Its Circuit Implementation北大核心CSCD

A kind of generalized Hamiltonian systems with dissipative structure and external input is proposed. By configuring its structure matrix and external input, a simpler three-dimensional dynamical system with only one fixed point is designed to illustrate the existence of chaos. Useful tools, including phase portrait, Poincaré section, Lyapunov exponents, bifurcation diagram and power spectrum, are used for detecting chaotic behavior of the proposed system with the enhancement of DC input. Compared with the known three-dimensional chaotic systems, the proposed system has the following two characteristics: Its dissipativity is related to system state variables and its Lyapunov dimension is closer to 3. Finally, a circuit implementation of the new system is presented and the results recorded on an analogue oscilloscope further verify the existence of chaotic behavior. © 2017, The Journal of Agency of Complex Systems and Complexity Science. All right reserved.     

关于方程u_{t}=(e^{u}(u_{x})^{2})_{x}+P(u)u_{x}+Q(u)的一种解法

研究了带有源项的非线性反应扩散方程ut=(eu(ux)2)x+P(u)ux+Q(u)特殊情况的解。利用二阶广义条件对称η=uxx+H(u)u2x+G(u)ux+F(u)的方法,其中H(u),G(u),F(u)分别是u的光滑函数。得到了上述方程的几个解。该方法也可以用来解决其他偏微分方程。     

红利边界下两类索赔相关风险模型的Gerber-Shiu函数

考虑具有常数红利边界的两类索赔相关风险模型的Gerber-Shiu函数. 两类索赔计数过程分别为独立的Poisson过程和广义Erlang(2)过程. 得到了Gerber-Shiu函数满足的积分-微分方程及边界条件,并给出了Gerber-Shiu函数的解析表达式.     

广义向量平衡问题

利用KKM型不动点定理,给出了在C_x-伪单调条件下广义向量平衡问题解的存在性定理.作为特殊情况,给出了隐式向量变分不等式解的存在性结论.改进和推广了已有结果.     

广义Fibonacci序列的几个性质

本给出了广义Ｆｉｂｏｎａｃｃｉ序列的一些性质,并且引进了相应的广义Ｌｕｃａｓ序列,讨论了这两种序列之间的关系。     

线性方程组的广义逆矩阵解法

线性方程组的逆矩阵解法一般只适用于一般特殊情况,即适用于系数矩阵为方阵的时候,对于一般的线性方程组,可以应用矩阵的广义逆来研究并表示它的解。本文探讨了线性方程组的广义逆矩阵解法。     

Hamilton-Cayley定理

本文给出了Hamilton—Cayley定理的若干证明,此后介绍了该定理的几个方面的应用。