累积分布函数

为了提高工作流执行的可靠性并尽可能缩短执行时间，设计了一个增量式的任务副本策略，并采用各资源站点任务排队等待时间的经验累积分布函数图来优化任务副本的设置参数。

In order to improve reliability of workflow execution and potentially reduce execution time , an incremental task replication policy based on empirical CDF of queuing time of sites is introduced .

求解有气体介质参与的辐射换热问题时，气体吸收带的带宽是一个重要的参数，同时它又是计算关联k模型中累积分布函数的参数。

Bandwidth is an important parameter for gas radiative heat transfer calculation , and a parameter for the calculation of the cumulative distribution function in the correlated k method .

基于MATLAB的互补累积分布函数和误码率的仿真结果表明，码元约束技术和传统限幅的结合不仅降低了高峰均功率比，而且很好地改善了误码率性能。

The code restriction technique and clipping are combined to achieve higher PAPR reduction and better BER , which can be seen from the simulation results of CCDF and BER based on MATLAB .

然后根据其分布型和分布特征值，使用matlab软件编程计算，产生各序列值对应分布型的累积分布函数值，并采用分布型随机数发生方法产生随机模拟序列。

Thirdly , cumulative distribution function value of the grade serials were calculated by matlab software according to distributing function and eigenvalue . Fourthly , Monte Carlo methods mathematics can generate the grade serials .

在将Bradford累积分布函数应用于实践的过程中，首先必须估计此分布的参数。

In the process of applying the Bradford cumulative distribution function to practice , first it is necessary to estimate parameter of the distribution .

然后，对通道换乘走行时间进行了抽样调查，从累积分布函数的角度，运用Weibull函数来描述换乘走行时间的分布，采用极大似然估计法对参数取值进行了估计。

Meanwhile , sampling survey of transfer walking time in subway passages has been made and Weibull function is used to describe the walking time distribution from the perspective of Cumulative Distribution .

Bradford累积分布函数的数字特征与参数估计整个观测期内的树干直径累积生长过程可以较好地用幂函数描述。

NUMERICAL CHARACTERISTICS AND PARAMETER ESTIMATION OF THE BRADFORD CUMULATIVE DISTRIBUTION FUNCTION The pattern of cumulative growth could be fitted by the power function satisfactorily .

通过比较该函数和FisherZ变换与累积分布函数的差值，证实了这种Sigmoid函数可以实现比FisherZ变换对累积分布函数更好的逼近效果。

And we prove it can achieve better effect than Fisher z transformation in approximating the cumulative distribution function , by comparing the difference between Fisher z transformation and Sigmoid function with that and the cumulative distribution function .

本文计算并比较了在LOS和NLOS情况下MIMO的容量差异；为进行更好的比较，还计算了MIMO信道容量的互补累积分布函数（CCDF）。

For both LOS and NLOS cases , different MIMO capacities are calculated and examined . For the better comparison , the Complementary Cumulative Distribution Function ( CCDF ) of MIMO channel capacity is calculated .

与IEEE802.16d标准中峰均比性能相比，本文提出的方法能在几乎不损失系统BER性能的情况下，获得良好的互补累积分布函数（CCDF）性能。

Compared with the performance of the IEEE 802.16d standard , the IPR method achieves better Complementary Cumulative Distribution Function ( CCDF ) performance without BER performance degradation almost .

介绍了一种新的用来衡量信号特性的参数-立方制系数（CubicMetric），分析了正交频分复用（OFDM）信号的峰值平均功率比，立方制系数及互补累积分布函数（CCDF）曲线。

A novel parameter , cubic metric is introduced to weigh the character of signals . It analyzes the peak average ratio and complementary cumulative distribution curve of the Orthogonal Frequency Division Multiplexing signal used in an OFDM system .

在这篇论文中，我分析了SC-FDMA的PAPR并且解析地导出SC-FDMA的时域信号，并利用PAPR的互补累积分布函数（CCDF）对它们的PAPR特征进行数值比较。

In this project I analyze the PAPR of SC-FDMA and analytically derive the time domain SC-FDMA signals and numerically compare PAPR characteristics using the complementary cumulative distribution function ( CCDF ) of PAPR .

介绍了以小波包函数为载波的多载波调制系统，分析了WPM信号符号周期内峰值功率的互补累积分布函数（CCDF）及其对PAPR性能的有效描述；

Multicarrier modulation system based on wavelet packet transform is introduced . By analyzing the CCDF about peek value 's power , its efficiency on measuring the performance of PAPR is demonstrated .

给出了各种复合衰落的概率密度函数、累积分布函数、平均电平交叉率、平均衰落时间的统一表达式。

The probability density function , cumulative distribution function , average level crossing rate and average fade duration of each composite fading channel are analyzed , and some uniform expression .

理论推导出该算法下最优中继节点和目的节点处输出信噪比的累积分布函数以及概率密度函数。

We analyze the cumulative distribution function ( CDF ) and probability dense function ( PDF ) of output signal-noise-rate ( SNR ) at the optimal relay node and destination node theoretically .

通过分析与计算证实，在计算吸收系数累积分布函数时，采用固定的带宽将引入较大误差，为此，将修正的宽带模型中计算带宽的方法引入吸收系数累积分布函数的计算。

Analysis and calculation show that the constant bandwidth is unreasonable in the calculation of the cumulative distribution function . So bandwidth calculated from the modified wide band model is used in the cumulative distribution function calculation .

通过比较得到了以下结论：平均风速和标准差估计法效果最好，累积分布函数拟合法次之，由于最大风速变化比较随机，平均风速和最大风速估计法效果波动最大，整体效果差。

The conclusion is : the method of averager wind speed and standard deviation is the best and the method of cumulative distribution function is the better , the method of average wind speed and maximun wind speed has a large fluctuation because the maximum wind speed changed more randomly .

基于蒙特卡罗法，提出了点支幕墙体系抗风挠度控制可靠性分析方法，得到了不同风压分布模型下幕墙最大位移的累积分布函数和抗风可靠度，并总结出一些重要结论。

In this paper , reliability analysis method of point-supported curtain wall under wind load has been proposed based on Monte Carlo method . The cumulative distribution function and reliability of the structural peak displacement under different wind distribution models are obtained . Some important conclusions have finally been drawn .

利用川渝地区含硫气井H2S释放速率数据，根据其累积概率分布函数建立概率分布模型。

The probabilistic distribution model for the release rates of H2S in the sour gas wells of Sichuan and Chongqing areas was developed using the complementary cumulative distribution function .

该系统可以完成的模拟演示包括：集合运算、教材中常见的概率密度函数和累积概率分布函数、概率游戏、概率论题解以及蒙特卡洛模拟等。

The simulations performed by the system include : sets operation , ordinary probability density function and cumulative distribution function in the teaching material , game of probability , solution of probability question and Monte Carlo simulation .

目的研究S型剂量效应曲线的累积正态分布函数拟合。

OBJECTIVE To study the fitting about S model dose-effect curve with the accumulation normal distribution function .

方法构建累积正态分布函数的适当表达形式，对实验所得数据进行拟合，同时与常用的四参数方程拟合进行比较。

METHODS Construct proper accumulation normal distribution function form and fit with our experimental data , then compare with the common 4-parameter equation fitting .

文中应用正态分布模型拟合实验数据，累积正态分布函数中的相应参数却有明确的生理学含义，从数学上体现了药理与药效的内在联系。

Use accumulation normal distribution for fitting experimental data , the analogous parameter in the accumulation normal distribution function has definite physiological meanings , and indicate the relationship between pharmacology and pharmacodynamics .