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SEISMIC FIRST BREAK PICKUP USING WAVELET TRANSFORM AND POWER RATIO METHOD 用小波变换与能量比方法联合拾取初至波
A fast algorithm peforming tissue density inhomogeneity corrections using a modified form of generalized equation of power law tissue-air ratio method(BATHO)is described. 组织空气比指数校正法(简称batho法)是放射治疗计划进行组织密度校正的一种重要方法。
So the void ratio method is feasible in compaction control of subbase. 因此，路基压实用空隙率法控制是切实可行的。
The superiority of the method is the pectinate filter characteristic, that is, the power ratio of the two output arms changes fast with the Bragg wavelength while in the rising or falling edge of the output spectrum. 该方法主要是基于 MZ 干涉仪的梳状滤波特性,即在输出光谱的上升或下降沿两输出臂的功率比值随波长变化很快,通过调整干涉仪臂长差,得到具有陡峭边沿的滤波器。
With respect to the problem of high Peak-to-Average Power Ratio(PAPR) of Orthogonal Frequency Division Multiplexing(OFDM),an improved reducing PAPR method by reversed subcarriers is presented. 针对正交频分复用系统(OFDM)所具有的高峰均比问题,提出了一种改进的预留子载波降低OFDM系统峰均比功率的方法。
Based on this OFDM PC model, the result of the MATLAB simulation gives the idiograph method to reduce downlink of high peak to average power ratio (PAPR) and difficult synchronizatio. 由MATLAB仿真所得结果,得出了OFDM技术应用所遇到的高功率峰均值比(PAPR)值和同步问题的具体解决措施。
We analyze the effect of the method to performance of system, which was proposed on reference [4] based on using different spreading and dispreading codes to reduce peak-to-average power ratio (PAPR). 摘要在文献[4]采用不同扩频码和解扩码来降低高峰均功率比的基础上，通过仿真实验分析不同扩频码和解扩码对系统性能的影响。
The normal ranges derived with the radioulnar ratio method demonstrated larger variation than originally reported. 桡尺比率法正常范围显示与原先报道相比有更大的差异。
One of the key techniques is to reduce the peak-to-average power ratio(PAPR) of the OFDM-CPM system. 降低OFDM-CPM系统中的峰值平均功率比(PAPR)是关键技术之一。
The distribution patterns of Amanita population were analyzed by means of variance/mean ratio method. 摘要采用方差／均值比率法测定了鹅膏属种群的分布格局类型。
A simple but effective scheme to reduce the high peak-to-average power ratio (PAPR) of OFDM is presented. 摘要针对正交频分复用(OFDM)所具有的高峰均比问题，提出了一种简单有效的降低峰均比的非线性变换方法。
The square ratio method and basin precipitation method are commended for annual runoff calculation. 在年径流计算中，建议采用面积比法和流域雨量法。
However, the major drawback of WOFDM is the peak-to-average power ratio(PAPR) problem. 然而小波正交分频多工技术的主要缺点，就是有太大的峰均值功率比。
The composition and stable constant were measured by equimolar continuous change method and the molar ratio method. 用等摩尔法和连续变化法测定了缔合物的组成和稳定常数。
The curve of effective power ratio shows convexity shape along with increase of rotational speed or throttling. 有效功比率随转速或油门开度的增大基本成中凸状。
Objective:To discuss the value of ratio method to estimated the function of thyroid nodule. 目的:探讨用比值法判断甲状腺结节功能状态的价值。
Reducing the Peak-to-Average Power Ratio(PAPR) is one of the key technologies in MC-CDMA system. 降低信号峰平比(PAPR)是多载波码分多址(MC-CDMA)系统的关键技术之一。
The basic principle and its application of chronological loop curve method, later water level method, adjusting factor method and fluctuating ratio method were analyzed here. 介绍连时序绳套曲线法，水位后移法，校正因数法，涨落比例法的基本原理及其在梧州水文站的应用分析。
To address the first question, power simulations are used.Mantel-Haenszel and likelihood ratio methods are the best for non-matched data. 再以有限元素方式做回授控制，分析此一结构在回授控制的制振效果。
The increase of DP,amplitude and power ratio(PR) in the obesewere significantly higher than those in control group(P<0.01 and P<0.05). 肥胖组餐后功率及振幅增加值显著高于正常体重组(P<0.;01);