查询词典 arithmetic-geometric mean

Uses the arithmetic mean of the mean peak force and the mean valley force.

4使用算术平均的平均峰值力及平均谷武力。

And use frequency formula or weighted harmonic mean formula of weighted arithmetic mean formula to get its mean value.

利用加权算数平均数的频数公式或加权调和平均数公式求其平均值。

By fixed point arithmetic we mean a 16-bit word size.

用定点算法，我们意味着字长为16bit。

There are some traditional methods for the financial risk measurement such as the simple arithmetic method, Mean—Square method and the VaR method, etc, which was pulled out and developed ten years ago.

传统的对于金融风险的度量方法已有很多，主要包括简单算术法、均值—方差分析方法和最近十年来发展起来的VaR方法。

The main research work of this paper are focused on following areas:(1) Based on review of the theory and methods on measurements of particle fields, a new idea for obtaining particle size and velocity distribution within a spray through imaging the particle field with a laser light sheet was put forward;(2) A DPIV (Digital Particle Image Velocimetry) system, is fit for velocity measurements of low speed flows, was developed and expended to particle size distribution measurement;(3) An arithmetic for particle velocity field reconstruction was developed, and the velocity distribution of water mist was also obtained;(4) A software system for particle analysis, which based on image geometry emend, de-noise and image partition was developed, the parameters such as particle size distribution, mean diameter, number of particles, minimum and maximum diameter can be got with this system;(5) A water mist system was developed and its characteristics, such as droplet velocity, size distribution, number of droplets and spray cone angle under different conditions were obtained from experiments with PIVS;(6) The measurement results of water mist characteristics with PIVS were compared and analyzed with the simply simulated results, and in addition, in order to verify the accuracy of PIVS, some experiments were conducted with the standard particles, such as glass-ball with known mean diameter of 50μm and 115μm, metallic coated tracing particle with mean diameter of 12μm;(7) Some experimental studies on interaction of water mist with liquid pool fires were conducted.

本论文的主要工作包括以下几个方面：（1）在对粒子场测量的相关理论和具体方法进行综述分析的基础上，提出了通过采用激光片光对粒子场进行成像以获取其粒径和速度等参数分布的新思路；（2）研制了适宜于低速流动速度场测量的DPIV(Digital Particle Image Velocimetry)系统，并使其实现了对粒子场粒径分布的测量功能；（3）研制了基于粒子运动轨迹的速度场重建算法，获取了细水雾雾场的速度分布；（4）研制了基于几何校正、去噪、图象分割等图象处理方法的"粒度分析软件系统"，该系统既可分析给出粒子场的粒径分布直方图和平均粒径，还可给出粒子的数目以及最大、最小粒径等信息；（5）建立了一细水雾发生系统，并应用上述方法对不同压力条件下细水雾系统的雾场特性（如速度分布、雾滴粒径分布、雾滴的数目、喷雾张角以及雾化长度等）进行了实验测量研究；（6）对细水雾特性参数的PIVS测量结果与计算机简单模拟计算结果进行了定性比较分析，并利用平均粒径为50μm和115μm的玻璃球以及12μm的标准示踪粒子对PIVS系统的粒径和速度测量结果进行了实验验证，同时对其局限性进行了分析讨论；（7）对不同工况条件下细水雾与油池火相互作用的过程进行了模拟实验研究。

First, a new similarity measure, named as arithmetic harmonic mean divergence measure, is induced.

首先，提出了新的相似性测度，算术调和均值距离测度AHM，图像通过最大化AHM全局配准，然后将图像划分成均匀子块，采用AHM测度刚性配准各对应子块，选取对应子块的中心作为标记点对，最后，用三次均匀B样条实现图像的弹性配准。

When using relative number or average number to get averaging, you may use denominator or numerator of this relative number or average number as weight number to weigh the relative number or average number,and use frequency formula or weighted harmonic mean formula of weighted arithmetic mean formula to get its mean value.

在由相对数或平均数求平均数时，可以以这一相对数或平均数的分母或分子为权数，对这一相对数或平均数进行加权，利用加权算数平均数的频数公式或加权调和平均数公式求其平均值。

The present paper will calculate the development speed of railway transportation for goods, by introducing index theory and making a literature review of arithmetic weighted mean index and stochastic approach.

本文引入指数理论，通过加权算术平均指数和随机指数编制方法的理论阐述与比较，最后应用随机指数化方法对江西省铁路货运生产发展速度进行试算。

In addition, deterministic calculations were carried out using (1) arithmetic mean values of untransformed hydraulic parameters,(2) arithmetic mean values obtained after backtransformation of Gaussian distributed parameters, and (3)alternatively using a set of mean bimodal retention and conductivity curves. Predictions obtained with the two stochastic methods and the deterministic cases are compared with measured cumulative outflow and moisture content profiles from fifteen 1 m long undisturbed soil columns collected along the same transect.

此外，决定论计算被实行使用改变与水有关的参数的(1)算术平均价值观，在 backtransformation 以后为得到高斯的(2)算术平均价值观的散布参数和(3)另一种选择使用一套卑鄙双峰的保留和传导性弯曲。，用二有可能的方法和决定论情况为得到的预言被把和仔细斟酌累积的流出比较和从十五1 m 长不受干扰土壤柱，沿着把同样的 transect。

The result of switching function experiment shows: the mean switching RT of the participants with low arithmetic ability is longer than that of the participants with high arithmetic ability both on common figures condition and on special figures condition, and the mean switching wrong rate of the participants with low arithmetic ability is higher than that of the participants with high arithmetic ability on both conditions.

转换实验研究结果表明：在常见图形和特殊图形两种条件下，数学能力低的儿童，其平均反应时均长于数学能力高的儿童；数学能力低的儿童，其平均错误率均高于数学能力高的儿童。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。