查询词典 systematic sampling

For a class of networked control systems with equality constraint ,this paper addresses the problem of designing controller,sampling period and the maximum allowable delay bound.

针对一类具有等式约束的网络控制系统控制器、采样周期以及最大允许延迟时间的设计问题，采用李亚普诺夫函数、线性矩阵不等式的方法，推导出了该网络控制系统渐近稳定的充分条件。

After analyzing the characteristic of the rigid plane motion and the shortcomings of classical digital image correlation algorithms, the phase-angle position of the rigid body in the 2D image was characterized by 1D sequence signals using the method of equiangular sampling feature extraction based on circle windows. Then the generalized correlation algorithm for estimation of time delay based on wavelet transform was used to acquire the angular displacement. Finally the ultrasonic radiation force acted on the micro-component was determined by the relation between force and motion.

在研究检测对象刚体平面运动特点和分析传统数字图像相关算法局限性的基础上，采用基于圆周窗口等分角采样的特征提取方法，将二维图像中刚体的相角位置信息表征为一维采样时序信号，并通过基于小波变换的广义相关算法来估计位移前后特征序列的时延，得到刚体的旋转角位移，从而利用力与运动量的相互关系确定出作用于微构件的超声辐射力。

The traditional method is that sampling 20 equidistance discrete voltages to calculate the virtual value. To gain the virtual value, we firstly average their square values, and then extract it.

传统的计算有效值的方法是利用一个周期内等距离散的20个采样点的瞬时值进行求解，通过计算它们的均方根值来得到有效值。

The description should include, where appropriate, equilibration times, injection sampling sequence, and system suitability or start-up parameters.

叙述应当要适当包括如下信息：平衡时间，样品进样顺序和系统适应性或启动参数。

The sampling number should be not is no less than 300 points. Results (1) The SSBPV during cycle ergometer were significantly higher both in EH and controls than other tests.

结果 （1）EH组与对照组在踏车时的SSBPV较其余的状态差异均显著（P.01）。

At the same time, the thesis points out more calculated data and more accurate on fire localization results. It is beneficial to decrease fire localization error by increasing band width of FIR filter to solve the problem of insufficient sampling points at an early stage of fire.

本文还通过仿真结果指出在带通滤波器的基础上，计算点数越多，定位估计就越准确；在火灾前期，输入的采样点数不够多的情况下，适当加宽带通滤波器的频率上限，有助于减小火灾定位误差。

Based on the analysis of error characteristics and performance effect of the mostly used crystal oscillator, a method to simulate the frequency error of crystal oscillator is proposed. The major idea is to determine the Allan variance parameter of each main stochastic error component at the given sampling interval at first, then to deduct a set of corresponding frequency error series and superpose them together.

该文对在GPS接收机中使用最多的晶振的误差特性和性能影响进行了分析，在此基础上提出了一种模拟晶振频率误差的方法，即首先确定晶振在给定取样时间间隔上各主要随机误差成分的Allan方差参数，由此反演产生相应的各项晶振频率误差模拟序列并进行叠加。

Investigation indicates that the error of frequency estimation is proportional to the sampling rate, while that of initial phase independent of it.

研究表明频率估计的误差在采样点数确定时正比于采样率，而初相估计的误差则不受采样率的影响。

The study is aimed to understand the dust concentrations and chemical substances within the fume, and to investigate if a commercially available smoke evacuator can get rid of the fume effectively, Area sampling proceeded in six operation rooms and a nursing station.

本调查的目的在了解熏烟中尘的浓度，含有何种化学物质，以及探讨一种市售排烟的效器。

I've found my new place to clear my head, and reset myselfafter sampling China's finest exotica.

在我尝试过最棒的中国特色的东西后，我已经找到让我保持头脑清醒的地方。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。