li4

克里金法广泛地应用于地下水模拟、土壤制图等领域，是一种很有用的地质统计格网化方法。它首先考虑的是空间属性在空间位置上的变异分布．确定对一个待插点值有影响的距离范围，然后用此范围内的采样点来估计待插点的属性值。该方法在数学上可对所研究的对象提供一种最佳线性无偏估计(某点处的确定值)的方法。它是考虑了信息样品的形状、大小及与待估计块段相互间的空间位置等几何特征以及品位的空间结构之后，为达到线性、无偏和最小估计方差的估计，而对每一个样品赋与一定的系数，最后　进行加权平均来估计块段品位的方法。(Kriging is a technique that provides the Best Linear Unbiased Estimator of the unknown fields (Journel and Huijbregts, 1978 Kitanidis, 1997). It is a local estimator that can provide the interpolation and extrapolation of the originally sparsely sampled data that are assumed to be reasonably characterized by the Intrinsic Statistical Model (ISM). An ISM does not require the quantity of interest to be stationary, i.e. its mean and standard deviation are independent of position, but rather that its covariance function depends on the separation of two data points)

deta sigma data converters book Chapter 3 Quantization Errors and Dithering in delta sigma Modulators

数模资料。现在是聚类专题。这个是Cluster-FCM。刚刚运行完交的作业。(Digital to analog data. It is thematic clusters. This is the Cluster-FCM. Just finished running post jobs.)

detect face of people with matlab

MATLAB在工程应用中的学习指南，有代码，有详解，特别适合新人学习。(MATLAB applications in engineering study guide, there are code, explain, especially for newcomers to learn.)

说明：  边缘检测是图形图像处理、计算机视觉和机器视觉中的一个基本工具，通常用于特征提取和特征检测，旨在检测一张数字图像中有明显变化的边缘或者不连续的区域，在一维空间中，类似的操作被称作步长检测（step detection）。(Edge detection is a basic tool in graphics and image processing, computer vision and machine vision. It is usually used for feature extraction and feature detection. It aims to detect the edge or discontinuous area with obvious changes in a digital image. In one-dimensional space, similar operations are called step detection)

The demo of the Level Set method

生成斜齿轮、用matlab编程、然后生成节点单元的编号(see the chinese)

结构分析的有限元法与MATLAB程序设计配套(Structural analysis of the finite element method and MATLAB programming package)

运用matlab编程的一个计算空间桁架的有限元程序(CAE)