查询词典 Rayleigh

A general model of two phase image segmentation based on variational level set method is proposed,and the region model is based on the image general probability distribution function.

基于变分水平集方法建立了两相图像分割的通用模型，其区域模型基于图像的一般概率分布函数，通过变分方法得到水平集函数的演化方程和符合常值分布、Gauss分布及Rayleigh分布的参数估计。

This paper introduces two pseud interleaving schemes,namely uniform distribution one and rayleigh distribution one ,and the way to realize these two interleaving schemes.

介绍了2种交织方案，即均匀分布的伪随机交织和瑞利分布的伪随机交织，以及这两种交织方案的具体实现办法。

The error bit ratio performance formula for the block precoded OFDM system with zero forcing and squared error receivers in Rayleigh Raying channels is deduced in this paper.

推导了在瑞利衰落信道下的分组预编码正交频分多址调制系统，接收机采用迫零均衡和最小均方误差均衡的系统误码率公式。

The finite element model of the stochastic truss is built and the random functions of its natural frequencies are obtained by use of the Rayleigh quotient.

文[2-4]对具有随机参数的结构进行了动力特性分析，其基本作法均是以小参数来描述结构中的随机因素，利用有限元和矩阵摄动方法求解。

Due to no channel estimation required for rayleigh fading channel, quotient coded QAM has lower receiver complexity.

商分编码QAM由于无需信道估计和均衡，因此降低了在瑞利衰落信道解调的复杂性。

Based on the theory of analogy of structural mechanics and optimal control, the optimal induced norm γ-2 of state feedback H∞ control is shown to be the fundamental Rayleigh quotient eigen value in structural vibration or Euler stability problems.

文摘：根据结构力学与最优控制的模拟理论，指出状态反馈H∞控制黎卡提方程中的最优参数γ－2，实质上就是结构振动或稳定理论中的瑞利商最小本征值。

Combining Rayleigh quotient of the stiffness matrix, the paper defined the index K used to estimate the mechanism stiffness, and plotted spatial graph of the stiffness performance.

结合刚度矩阵的瑞利商定义了刚度判定指标K，绘制出刚度性能空间图，进一步研究了操作端方向的刚度特性。

Considering the randomness of both elastic module and mass density of the structures, the element′s structural stiff and mass matrix have been built, the structure dynamic characteristics is analyzed based on probability, and the digit characteristics of natural frequency random variable is derived from the Rayleigh′s quotient.

利用随机因子法，建立了考虑结构弹性模量和质量密度同时具有随机性时结构的刚度矩阵和质量矩阵；从结构振动的瑞利商表达式出发，利用代数综合法推导出结构特征值随机变量数字特征的计算表达式。

Combining Rayleigh quotient of the stiffnesss matrix,the index used to estimate the manipulator continuous stiffness was defined,and spatial graphs of the stiffness performance were plotted.

文中还结合刚度矩阵瑞利商定义了连续刚度判定指标，绘制了刚度性能空间图，进一步探讨了该机构的方向刚度特性，为平面并联弹性铰机器人机构刚度的分析提供了一种新颖通用的方法。

In study of the truss structural dynamic characteristics analysis, randomness of the structural physical parameters and geomtric ones are all considered. The finite element model of the stochastic truss is built and the random functions of its natural frequencies are obtained by use of the Rayleigh quotient. Employing probabilistic distribution function expression for the random functions, through a series of mathematical processing including determination of limits of integrals, variable substitution etc., the probaabilistic density function for the truss natural frequencies are gained to realige accurate calculation for the reliability of the truss natural frequencies.

考虑结构物理参数和几何参数的随机性，通过构建随机参数桁架结构的有限元模型，利用瑞利商公式获得了结构固有频率随机函数的计算表达式，应用随机函数的概率分布函数表达式，通过确定积分区间、变量替换、积分顺序变换等一系列数学上的处理，获得结构固有频率的概率密度函数，进而实现对结构固有频率可靠度的精确计算。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。