查询词典 correlation

By using Spearman rank correlation analysis, the correlation between pathological grade and serum T-PSA, F-PSA and E/T levels was evaluated.

采用Spearman等级相关分析T-PSA、F-FSA水平和F/T比值与前列腺癌病理分级的关系。

A hybrid model of short-term load forecasting based on chaotic theory, correlation and neural networks is presented in this paper. Firstly, reconstruct attractors in phase spaces using chaotic theory, Secondly fit the attractor's evolvement using BP neural networks, because selecting neural network's input training data using Euclid distance and correlation, improve neural network's associative memory and ratiocinative ability, can better fit the attractor's evolvement.

提出一种将混沌理论、关联度和神经网络相结合的短期负荷预测模型，首先利用混沌理论重构负荷时间序列的相空间吸引子，然后用BP 神经网络来拟合空间吸引子的演化，由于使用空间欧氏距离和关联度联合来选取神经网络的训练样本，这样就提高了神经网络对负荷序列混沌特性的联想和泛化推理能力，能够更好的拟合吸引子的演化。

Results Significant correlation (P＜0.05) were observed between psychological problems and sexuality, distribution and reactiveness of vitiligo, however, there was no significant correlation between psychological problems and other clinical factors such as profession, area and typing.

结果：精神紧张、抑郁等心理因素在白癜风患者的性别、皮损单双侧分布、病情的活动性等方面有显著性差异(P＜0.05)；而在职业、皮损面积、分型等方面则无显著性差异(P＞0.05)。

The conclusion show as followings: Based on parameter recension of EPIC model, the correlation coefficient between simulated alfalfa forage yield and root zone soil water with observed value were 0.8957 and 0.9884, the correlation coefficient between simulated A.

2半湿润区紫花苜蓿30年的水分生产潜力模拟值为4.262～13.456t/hm~2，根层有效水含量在第8年达到极低值，受土壤水分降低的影响，苜蓿的水分生产力水平开始降低，干旱胁迫日数开始加重，且分别与当年和前一年的降雨量成正相关和负相关变化。

Train for half year to the study team and the control group children after the different method to carry on the index of correlation the examination: Around the contrast examination experimental study four groups the event correlation electric potential ERP(P300) data and the right brain brain electricity fundamental wave alpha wave formation rate which with the brain custom, the memory level, the brain suggestion electric potential reflectoscope reflector obtains, all has the significance difference (P0.05), obtains the study team effect to surpass other control groups obviously.

对研究组和对照组儿童用不同方法训练半年后进行相关指标的检测：对比检测实验研究前后四组的用脑习惯、记忆力水平、脑诱发电位测试仪获得的事件相关电位ERP(P300)数据和右脑脑电主波α波的发生率，都有显著性差异（P.05），得出研究组效果明显优于其他对照组。

According to the changes in infrastructure investment and GDP statistics during the period of 1996-2008 in China, the results of calculating the correlation coefficient and regression analysis showed that the correlation between the total GDP and total investment in infrastructure was strong.

根据我国1996－2008年间的基础设施投资与GDP变动统计数据，计算出的相关系数和回归分析结果，表明GDP总量与基础设施投资总额之间的相关性较强。

Introduced a different strategy for estimating the working correlation so that the estimator always existed, and, even if the correlation was misspecified, the regression estimator remained optimal within the assumed family.

这一思想的好处是不用直接估计工作相关阵中的多余参数，而是利用广义矩估计的思想建立估计方程。

The samples for linear regression, the broken line analysis and plot analysis, the thesis found that the listed company news that foreign direct investment is the lack of access to a very earnings in the stock market reaction to the impact of factors, single company the non-recurrent yield and investment opportunities between the companies is a positive correlation between the operators while the Cause exists a negative correlation between.

通过对样本进行线性回归、折线图分析和散点图分析，本文发现上市公司的对外直接投资消息宣布无法获得一个正的非常性收益，在对股票市场反应产生影响的因素中，单家公司的非经常性收益率与公司投资机会间存在正相关关系，与经营者动因间则存在负相关关系。

It is interpreted that the correlation structure of the allelic polymorphism data contains null correlations introduced by "closure" and the statistical distribution of the data is not normal because of its constant row sum,which resulted in great difficulties in analyzing the data with traditional multiple linear statistical methods such as principal component analysis,factor analysis,cluster analysis and canonical correlation analysis.

长期以来，对于多维基因多态性数据的多元统计分析，如计算遗传距离时所用的聚类分析、分析群体遗传结构时所用的主成分分析、因子分析和典型相关分析等，一直应用为无约束条件数据而设计的经典多元线性分析方法，并没有注意基因多态性数据的"闭合效应"所带来的问题。

The range sidelobe of gaussian power spectrum random noise presents the ruleless shape envelope and decreases significantly with the correlation length increase, so it can be suppressed by increasing the length of the correlation data if the instruments are available.

通过分析硬件平台产生的两种随机噪声信号(改进型Logistic-Map的混沌随机噪声信号和基于Ziggurat算法的高斯分布随机噪声信号)的统计特性，证实了产生的这两种随机噪声信号可以符合应用要求。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。