1) reduction function of variance
方差折减函数
1.
The key to application of random field theory to reliability analysis is how to combine the reduction function of variance obtained by the random theory with the reliability theory.
阐述随机场理论在进行地基可靠度分析中的作用,指出合理确定方差折减函数对地基可靠度分析具有重要意义。
2.
The key to application of random field theory to reliability analysis is how to combine the parameters obtained by the random theory,especially the combination of the reduction function of variance with the reliability theory.
应用随机场理论进行可靠度分析时,关键在于随机场理论求得的参数,尤其是方差折减函数如何同可靠度理论结合起来。
2) variance reduction function
方差衰减函数
1.
Based on the probabilistic model of engineering property of soil,we use mathematical model to describe the variance reduction function and the correlation distance.
本文研究土性剖面的随机模型,给出了相关文献中使用的方差衰减函数与相关距离的数学模型,并证明了相关函数的类型在某种条件下必为指数函数,纠正了相关文献中的错误概念。
2.
Based on the random fields model, the formula of the variance reduction function and the formula of the correlation distance are proved in this paper.
研究了土层剖面的土性随机场模型,给出了方差衰减函数与相关距离的公式证明,并讨论了相关函数的类型在某种条件下必为指数函数。
3) the coefficient of reduction
折减函数
4) variance function
方差函数
1.
A method for determining covariance functions of time series is presented.
提出一种确定时间序列协方差函数的方法,它首先根据(多元)时间序列构造其互协方差函数随机序列、互相关函数随机序列或自协方差函数随机序列、自相关函数随机序列,然后采用谱分析和多点平均方法对互协方差函数随机序列、互相关函数随机序列或自协方差函数随机序列、自相关函数随机序列的趋势项进行分离,分别求得其周期项和非周期项的函数表达式,再综合给出整个趋势项函数。
2.
The variance function based on statistical theory is introduced to analyze the effect of the antenna aperture on measurement in reverberation chamber.
为分析非零口径天线的局部平均作用对混波室测试的影响,以统计理论为基础,引入方差函数,从混波室空间相关函数出发,计算出方差函数随间隔长度变化的规律。
3.
We propose a general semiparametric variance function model in a random design setting.
介绍具有随机设计的一类半参数方差函数模型。
5) Semivariance
半方差函数
1.
The result of semivariance analysis showed that the metal concentrations were correlated in .
通过半方差函数分析,发现10种重金属元素在一定范围内均存在空间相关性。
2.
Based on gridding sampling,soil water was conducted with Trime measuring system in pear orchard of Yantai Academy of Agricultural Sciences from April to August in 2005,and the soil water statistic characteristic,semivariance,fractal dimension and the law of temporal and spatial distribution were also studied.
2005年4~8月期间,利用Trime水分速测系统,采用网格化取样方式对烟台农科院梨园的土壤(0~30cm)水分的90个样点进行了四次取样,并运用传统统计学和地统计学方法对土壤水分的数据统计特征、半方差函数和分维数及其时空分布规律进行了分析。
6) semi-variance function
半方差函数
1.
Sampling and testing were conducted on the mineralizations degree of groundwater in the 670 km~2 of Sangong River Basin,Xinjiang and semi-variance function analysis was made afterwards on the data obtained by the application of geostatistics.
对面积约670km2的新疆三工河流域地下水矿化度进行了取样检测,应用地质统计学方法对取得的数据进行了半方差函数分析,计算了平均值、方差、标准差、变异系数等传统统计特征值,并指出了用该方法表示地下水矿化度所存在的不足。
补充资料：减折
1.裁削，打折扣。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条