品质因子

光谱估计方法FAT的强度修正及品质因子

Intensity Correction and Quality Factor of FAT

现代天文观测资料测定Chandler摆动的周期P和品质因子Q

Determination of the Chandler wobble period and its quality factor with modern astronomical measurement

利用反射波研究东秦岭地区的介质品质因子Q

Study the q - value of eastern Qinling region by reflected wave

计算结果表明：（1）实验场地浅层介质在原场条件下的品质因子Q值在40左右；

The results show : ( 1 ) Q of in-situ medium is about 40 ;

一般求反Q滤波中的大地品质因子Q值采用Q扫描和谱分析两种方法。

The earth quality factor Q is usually obtained using Q scan and spectrum analysis .

可利用纵横波的振幅、主频、衰减（或品质因子Q）和主振幅的变化来检测裂缝张开度的变化；

The main frequency , attenuation and amplitude of seismic wave can detect change of crack opening .

本文利用天然地震的近震体波测定介质的品质因子Q值。

In this paper , the Q-factor in medium is determined by using local seismic body wave from natural earthquakes .

因此，品质因子可作为油气储层识别和烃类检测的一个判断标志，由此可见品质因子Q的准确反演显的很重要。

Therefore , th-e quality factor can be used as oil and gas reservoir recognition and hydrocarbon detec-tion a judgment sign .

平板型光子晶体微腔具有较小的模式体积和较大的品质因子（Q），可以有效的使光子局域化。

The planer photonic crystal microcavity has small mode volumes and large quality factor , which can make efficient localization of light .

利用VSP直达波资料反演粘弹介质的相速度及品质因子

Inversion of phase velocity and quality factor from direct waves in vertical seismic profile data

基于二极管品质因子和暗电流研究的MPPT算法

A MPPT algorithm based on the research of diode factor and reverse saturation current

模型试算表明：它能对地层的品质因子和Q值异常很好的成像。这为预测地层的含油气性提供了一种有效的方法。

The model testifies that attenuation factor and abnormal Q can be well tomography from it , which provide an efficient method to prospect gas and oil .

半导体量子点Rabi振荡品质因子及其退相干机制

Quality Factor and Decoherence Mechanism of Rabi Oscillation in Semiconductor Quantum Dot

在时间域中，利用地震记录中的振幅与上升时间信息可以计算出岩石介质的品质因子Q值。

Seismic amplitude and rise time in time domain are commonly used for obtaining the attenuation coefficient or the quality factor ( Q value ) of the underground rock .

本文在假定地球介质为粘弹性的基础上，测定和分析了东经103°以东的甘肃地区和宁夏西海固地区的介质品质因子Q值，由（？）和（？）

This paper determines and analyses crust medium quality factor , Q value , in the eastern Gansu area and Xiji-Haiyuan-Guyuan area of Ningxia , assuming that crust medium is visco-elastie .

根据这种表示，高效率太阳电池的结品质因子仅利用电池的四个输出参数（V（oc），I（sc），Vm和Im）便可确定。

With this , the quality factor for a high efficiency solar cell can be determined based on its output parameters Voc , Isc , Vm , and Im .

结果表明：在频率0～300kHz以内，磁粉芯磁导率具有良好的频率稳定性，品质因子Q最大可达到80；

The results showed that the permeability of the core had the optimal stability of frequency and the quality coefficient reached 80 at most in the frequency range of 0 ~ 300 kHz .

对于某一方向上品质因子守恒的情况，可以通过解析某一方向品质因子守恒的充要方程，找到原子激光的ABCD形式的传播子。

For the conservative quality factor system in some direction , the propagator of ABCD formulation can be got .

结果表明，不同Chandler周期和品质因子Q的取值对观测激发的功率谱密度，以及观测激发与大气激发之间的相干系数有很大影响。

Results show large differences in psd of the observed excitation , and in squared coherence between the observed excitation and the AAM excitations for different Chandler periods and Q.

研究区域内介质品质因子Q＝55～109，前震平均值为93，余震平均值为74；

The results show that in Yongdeng region , the medium Q values range from 55 to 109 , the average Q of foreshocks is 93 , and the average Q of aftershocks is 74 ;

应用层析速度反演计算出表层沙的纵波速度，进而得到其品质因子分布，利用反Q滤波对地震资料进行吸收补偿。

Using the relationship between velocity and quality factor and the velocity obtained by inversion , the distribution of quality factor is derived and then the absorption compensation is applied to seismic data by inverse-Q filter .

根据地球自由核章动在周日重力潮汐观测中的共振效应确定了自由核章动的复本征周期和品质因子Q值，研究了极移重力效应；

The complex eigen period period and Q value of the FCN are evaluated based on the resonance observed in the diurnal tidal gravity , the gravity change due to the polar motion is also studied .

仿真实验表明，当JPEG压缩品质因子为20时，提取水印和原始水印的归一化相关值平均提高了0.205。

The average normalized correlation value between the extracted and the original watermarks can be increased by 0.205 when the quality factor of JPEG compression is equal to 20 .

尽管Pn波品质因子（PnQ）对上地幔流变性质研究及核试验监测有着深刻含义，迄今它仍然是一个难以准确测定的地震参量。

In spite of its profound implications on the upper mantle rheology and seismic verification of low-threshold nuclear test ban treaties , PnQ , the quality factor for Pn wave , remains an elusive parameter to quantify .

实验结果表明：①速度vp、vs和品质因子Qp、Qs均随埋藏深度的增加而增加；

Experiment result says below conclusions : Both velocities ( vp , vs ) and quality factors ( Qp , Qs ) increase with the increase of depth .

系统地研究了有机双取代基TGS系列晶体的生长形态、晶胞参数、主要的介电、热释电和铁电性能参数等，发现这几种双有机取代基TGS晶体的品质因子有不同程度地提高。

The growth morphology , the lattice parameters , the main dielectric and pyroelectric and ferroelectric parameters of these crystals has been systematically studied .

计算机分析表明，减少AlGaAs层厚度，减少反向电流密度和品质因子是进一步提高η的有效途径。

Computer analyses shown that decreasing reverse current density , junction perfection factor and thickness of AlGaAs layer are effective ways for further improvement on efficiency η .

3金属导线离地的距离越小，有效电感值Leff、品质因子Q、自谐振频率SRF也越小；

The distance of metal wire and ground is smaller , the effective permeability Leff , quality factor Q and resonance frequency SRF is also smaller ;

光学微腔有着小的模式体积和高的品质因子Q，在低阂值微腔激光器、光学滤波器、传感器、光开关和调制器等领域具有重要的应用价值。

Due to their small mode volumes and high quality ( Q ) factors , optical microcavities have important application values in various fields , such as low threshold microcavity lasers , optical filters , sensors , optical switches and modulators .

根据线性滞弹性体松弛模型反演得到了介质品质因子Qm、95%置信水平下的测量误差及相关参数。

Based on a linear viscoelastic relaxation model we deduced the medium quality factor Q_m , and associated error with 95 % confidence level .