space variance

Space distribution, transformation tendency, anisotropic direction magnitude and auto correlation distance are displayed by GIS software and it has been proved that space variance and anisotropy exist in soil moisture content.

在GIS上直观的显示出区域内土壤体积含水率的空间分布、变化趋势、各向异性的方向和大小、自相关距离，证实土壤墒情存在着空间变异和各向异性。

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Several main methods of the reliability analysis are introduced and introduce the random field theory, and set up the model of reliability analysis on slope stability in terms of soil parameter space variance and correlation.

介绍了可靠度分析的主要方法，并引入随机场理论，建立了考虑土性参数空间相关和变异条件下的土坡稳定可靠度分析的计算模型；

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Method: The first step was to analyze the surface EMG signal of human upper arm by using multi-resolution of wavelet transform, then to establish a feature space consisting of the variance of wavelet coefficients.

方法对人手上肢肌肉记录的表面肌电信号进行多尺度分解，利用肌电信号小波系数的方差构造特征空间。

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Finally, the influential factors of calculating space mean variance are analyzed combined with a static cone penetration data.

并结合工程实例，分析了空间平均方差计算的影响因素。

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There is few abstract researches in the fix quantity of the space variance between soil and terrain, especially in the small field.

但有关土壤与地形要素的空间定量关系还缺乏深入的研究，特别是对微域或田间尺度及单一制图单元内的土壤与地形关系定量模式知之甚少。

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Most of the space variance about the soil genesis and fertility properties can be explained by the change of elevation and slope in map unit.

制图单元内大部分土壤发生学性质和肥力性质的空间变异性可用坡度和海拔高度的变化来解释。

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Time& space Section and Its Variance Analysis in Agriculture Experiment Design

农业试验设计中的时空分段及其方差分析

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The algorithm of image segmentation is analyzed. The property of low contrast and gray randomly distributed image is considered and the method based on space region variance and gray region variance is proposed for image enhancement and gray segmentation.

在分析图像分割算法的基础上，针对灰度随机分布的低对比度图像，提出采用空间区域方差和灰度区域方差进行图像增强和灰度分区。

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Because the area of the research region is very small ( 7500m~ 2), the influence of climate and parent materials is very small, we can conclude that the space variance is mostly influenced by terrain.

由于研究区域范围小（7500m~2）、气候和母质均一，因此土壤发生学和肥力因素的空间变异主要是由地形因素引起的。

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For the correlation function method, such questions as how to select the fitting scope and the type of correlation functions are studied, and for the recurrence average method, such questions as how to determine the stabilization point and how to solve the space variance are discussed.

对于相关函数法，讨论了拟合范围及相关函数型式的选择。对于递推平均法，讨论了曲线平缓点的确定及空间均方差的求解方法。

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