In china , after the initial orientation , the eye bounces around the total area of the listing consideration set 在中国,除了热点都源自左上方外,人们在整个的页面上跳来跳去的寻找信息。
The settling behaviors of the rectangular particle were affected significantly by the initial orientation angle and length - width ratio 粒子的初始取向角和长宽比对其沉降过程有较大影响。
The settling behaviors of a rectangular particle with different initial orientation angles and length - width ratios were simulated by using distributed lagrange multiplier / fictitious domain method 摘要为了对方形粒子在二维垂直通道中的沉降运动特性进行研究,应用了拉格朗日乘子虚拟区域方法对不同初始取向角、不同长宽比情况下方形粒子的沉降运动进行了直接数值模拟。
With the increasing initial orientation angle and length - width ratio , the drifting distance , the fluctuation of the orientation angle , lateral drifting velocity and rotation velocity all increase , while the final settling velocity decreases with the increasing length - width ratio 初始取向角和长宽比增大,则粒子的横向漂移以及取向角、侧向漂移速度和转动角速度的振荡幅度都增大;同时随着长宽比的增大,粒子的沉降速度相应减小。
This paper presents a new face detection algorithm for color video images based on skin color and multimodal information fusion . first , this paper presents a new means for selecting skin samples ; and then comparing skin distribution in the eight color spaces and analyzing the adaptability for different skin patterns , poses a face initial orientation ' s method which uses the single gaussian model in the tsl color spaces , and calculates skin probability images ; afterwards comprehensive comparing three typical threshold value separating algorithms , put forwards a face separating method which bases on region growing and fuses multimodal informations ; final , raises a face confirming algorithm which fuses three shape features 首先提出了?种新的肤色样本选取方法;然后通过对八种色空间肤色分布的比较以及不同肤色模型适应性的分析,提出了在tsl色空间上用单峰高斯模型模拟肤色分布,求得肤色概率图进行人脸初定位的方法;随后在综合比较三个典型阈值化分割算法的基础上,提出了融合多源信息进行区域生长分割人脸的算法;最后提出了融合三个形状特征的人脸确认算法。
For the bldcm which has a pseudo - sinusoidal back - emf waveform , this dissertation presents a svpwm control method using six discrete position signals for minimizing the torque ripple . the main aspects for the implementation of this method are analyzed , including the initial orientation of the voltage vector , reasonable choice of the impedance angle and the advance commutation angle , and estimation of the successive rotor positions 针对反电动势类似正弦的准正弦波反电动势无刷直流电动机,本文提出一种基于六个离散位置信号的自同步svpwm (电压空间矢量法)控制方法,用以削弱电磁转矩脉动,分析了实现这种方法的主要控制环节,包括起动时电压空间矢量的初始定位,阻抗角与电流超前角的合理选择以及连续转子位置的估计等。