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This section simply introduces the basic principles of the conventional analysis of time series (mean, variance, standard deviation; covariance and correlation coefficient; autocovariance and autocorrelation coefficient), frequency spectrum analysis and wavelet analysis.
本文简单地介绍了传统时序分析(包括平均值、方差和标准差;协方差和相关因子;自协方差和自相关因子)、频谱分析和小波分析的基本原理。
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In a certain period, the probability and expected value of critical drought duration got larger with the in crease of first-order auto-correlation coefficient and skewed coefficient, especially with first-order autocorrelation coefficient. The return periods of consecutive 11-year drought in North Luo River and Jing River were 1000 years.
在一定时期内,极限水文干旱历时的发生概率和数学期望随一阶自相关系数、偏态系数的增加而增大,且一阶自相关系数对极限水文干旱历时概率分布影响较为显著;泾河和洛河发生连续11年干旱的重现期均为1000年。
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The spatial autocorrelation coefficient and spatial regression model are widely applied spatial statistic techniques to explain the effects and distributions of spatial factors. This study identifies the major driving forces of the spatial neighborhood effect on land-use/land-cover change in Metropolitan Taipei.
空间自相关系数(spatial autocorrelation coefficient, SAC)或空间回归模型(spatial regression model, SRM)为探讨空间关系常用的工具,其中空间自相关系数以相关系数之观念,藉以探讨空间聚集的型态;空间回归模型则以线性回归模式为基础,探讨自变数以及依变数项的空间差异,对空间近邻效果提供有效的解释方式。
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That is, the average size of scattering grains (the correlative interval at the first minimum point of autocorrelation function), the descending curve of the autocorrelation and the rectilinear asymptote of the autocorrelation at the large correlated interval changed regularly with the differential roughness of the scattering screen.
即当散射屏粗糙度改变时,散斑颗粒(自相关函数的第一个极小点所对应的相关间隔)的平均大小、散斑的自相关函数曲线的下降趋势和散斑自相关函数在大的相关间隔处的渐近值等都按一定的规律变化。
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We propose the mirror-image decomposition of dependence graph to solve the parallelization of self-dependent Field-Loops, which has been an unsolvable problem in traditional methods, and realize both the wavefront and pipelined execution of selfdependent Field-Loops.
本文提出的相关图镜像分解技术解决了传统技术无法处理的自相关场循环的并行化问题,成功实现了自相关场循环的波前并行和流水并行。
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A new group of autocorrelation topological index (At、Bt、Ct and Dt) was designed and developed based on the vertex degree of molecular topology and autocorrelation function of mathematics. The autocorrelation functions were calculated from the square root of the vertex degree、modified vertex degree and their combination, that is d i、、 and . The matrix description method and the algorithm of computer software have been developed for the new topological index calculation.
针对目前自相关拓扑指数的计算完全依赖于实验参数而存在的问题,以分子拓扑学点价和自相关函数研究为基础,将点价、修正点价及其组合:、、、的平方根分别作为自相关函数中的f,设计开发出一组新的以点价计算为基础的自相关拓扑指数At、Bt、Ct和Dt。
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This invention relates to three-dimensional seismic data processing quality monitoring technology. Selecting time-window and analysis frequency for FFT to obtain frequency-domain conversion result for every channel; taking mean-filter to obtain the statistic excited energy or noise disturbance; plotting all results on plane graph to monitor the 3D excited energy or noise disturbance; taking normalization and autocorrelation to all earthquake channel; summating all autocorrelation statistic result to obtain opposite statistic autocorrelation result; finding out and plotting the zero-crossing of autocorrelation on plane position for monitoring excited wavelet.
本发明涉及一种三维地震资料处理质量监控技术,步骤是:选定时窗和分析频率;对某炮各地震道在时窗内做快速富立叶变换,得到道数据在频率域变换结果;对同炮的所有地震道做频率域中值滤波,得到该炮的统计激发能量或噪声干扰量结果;将所有炮的计算结果绘到各炮点平面图上,监控三维激发能量或噪声干扰;对地震数据某炮的各地震道做归一化自相关;对同炮的所有地震道的自相关统计求和,得到该炮的统计自相关结果;寻找该炮统计自相关的零交叉时,将所有炮的零交叉时绘到各炮点平面位置上,完成激发子波监控。
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A new algorithm of discrimination between inrush currentand fault currentof transformer is brought forward based on self- correlation analysis,which is to calculate self- correlation coefficients of variant periods after analyzing the sam pling data and then discrim inate between inrush current and fault current by using the m agnitudes of the calculated coefficients.
提出一种利用数字信号处理中的相关函数的基本概念,对采样数据进行分析,计算采样数据在不同时段上的自相关系数,利用自相关系数的大小来区分变压器励磁涌流和内部故障差流的新方法。
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The correlated distances of bottom soil watercontent at different times were bigger than those of surface soil. Soil salt content did not have thisphenomena. The possible reason was that the bottom soil salt content was mainly affected bygroundwater.
两个时期土壤底层含水量的自相关距都要大于表层的自相关距,而盐分的空间自相关距没有表现出这种现象,这可能与底层盐分受到地下水作用的影响比较大有关。
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The image processing method of PIV was studied on the base of the image correlation theory in this paper. The simulated particle image displacement field was reconstructed. The reconstruction result of auto correlation and cross correlation , and the error of cross correlation were given. The difference of this two correlation method was analyzed.
以图像相关理论为基础,研究粒子图像测速技术的图像处理方法,编制出高精度的处理软件,重建计算模拟的粒子图像位移场,给出了自相关法与互相关法的积相关与减相关的计算结果,及互相关法的误差分析,分析了自相关与互相关区别。
- 更多网络解释与自相关相关的网络解释 [注:此内容来源于网络,仅供参考]
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autocorrelation coefficient:自相关系数
Autocorrelation 自相关 | Autocorrelation coefficient 自相关系数 | Autocorrelation function 自相关函数
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Autocorrelation:自相关
量第二节 怀特(White)对异方差的修正 123第二节 广义差分最JA-乘法(Generalized Least Squares)的运用第四节 杜宾-瓦尔特森(Durbin - - Watson)检验第五节 拉格朗日乘数(Lagrange Multiplier)自相关(Autocorrelation)第六节 一阶自相关
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Autocorrelation:自相关作用,自动校正
autoconduction 自体导电法 | autocorrelation 自相关作用,自动校正 | autocorrelogram 自相关图
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autocorrelation receiver:自相关接收器
autoconverter 自动变换器 | autocorrelation receiver 自相关接收器 | autocorrelation type radiometer 自相关型辐射计
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Autocorrelation Detection:自相关检测
自相关 Autocorrelation | 自相关检测 Autocorrelation Detection | 自校准 Self-calibration
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autocorrelation analysis:自相关分析
autocorrection 自动校正 | autocorrelation analysis 自相关分析 | autocorrelation coefficient 自相关系数
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autocorrelation analysis:自相关分析=>自己相関分析
autocorrelation 自相关,自相关作用=>自己相関 | autocorrelation analysis 自相关分析=>自己相関分析 | autocorrelation coefficient 自相关系数
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autocorrelogram:自相关图
autocorrelation 自相关作用,自动校正 | autocorrelogram 自相关图 | autocytometer 血球自动计数器
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autocorrelogram computer:自相关式计算机
autocorrelator | 自相关器(计算自相关用的电气器械) | autocorrelogram computer | 自相关式计算机 | autocoupler | 自动挂钩器 自动耦合器
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autocorrelogram computer:自相关式计算器
自生相关函数 auto-correlation function | 自相关式计算器 autocorrelogram computer | 自协方差,自协变 autocovariance