分形维数,fractal dimension
1)fractal dimension分形维数
1.Study on dosage control by flocsfractal dimension;絮凝体分形维数投药控制研究
2.Determination offractal dimensions of silicon dioxide xerogel by means of gas-adsorption;气体吸附法测定二氧化硅干凝胶的分形维数
3.Study offractal dimension and its effect on specific heat capacity of coal or chars;煤焦分形维数及其对比热容的影响研究
英文短句/例句
putation of Fractal Dimension for Digital Image in a 3-D Space三维空间数字图像的分形维数计算方法
2.Analysis on Fractal Dimensions of Liquid Front During Explosion Dispersion爆炸分散液体前锋形态的分形维数分析
3.Fractal dimension and the using in image blocks classification;分形维数及其在图象块分类中的应用
4.A Study on the Fractal Theory and the Real-time Computing of the Fractal Dimension of Images分形理论及图像分形维数实时计算的研究
5.Fat fractal percolation model of porous media and its scaling rule多孔介质的胖分形渗流模型及其分形维数
6.Study on fractal properties of a river bed and the calculation method of its fractal dimension河床表面分形特征及其分形维数计算方法
7.Image Coding Based on Fractal Dimension and Wavelet基于分形维数和小波的快速分形图像编码
8.Multifractal dimension and multifractal spectrum algorithm based on Z-ordering technique基于Z-ordering的多重分形维数及多重分形谱算法
9.Fractional Dimension and Computer Simulation of Koch Curve;Koch曲线的分形维数及计算机模拟
10.Signal Feature Extraction Base on Factral dimensions of Time-Frequency Domain基于时频域分形维数的信号特征提取
11.Fault Diagnosis of a Bearing Based on Chaos and Fractal Theory某型滚动轴承故障与分形维数的确立
12.A Detection Algorithm Based on Local Fractal Dimension基于局部分形维数的多目标检测算法
13.Image Identification of Corn and Weed Based on Fractal Dimension基于分形维数的玉米和杂草图像识别
14.Mathematical Basis of the Fractal-dimension and Empirical Analysis of the Chaos and Fractal to Shanghai Stock Market;分形维数的数学基础及对上海股票市场混沌、分形特性的实证分析
15.The fractal dimension of urban form:theoretical approach and practical significance;城市形态的分形维数:理论探讨与实践教益
16.Research on the Properties of boundary outline of Sand and Crushed Stone by Using Fractal Dimension用分形维数表征砂石的轮廓形状特性的研究
17.Quantitative Characterization for Surface Morphology of Interfacial Transition Zone (ITZ) in Concrete by Fractal Dimension混凝土界面过渡区表面形貌的分形维数表征
18.MORPHOLOGY OF FRACTAL DIMENSION UNDER THE CONDITIONS OF DIFFERENT ZINC SILICATE CRYSTALLIZATION不同条件下硅酸锌结晶形貌的分形维数
相关短句/例句
fractal dimensions分形维数
1.Relation between compressive strength andfractal dimensions of jointed rock-mass;节理岩体分形维数与抗压强度的关系探讨
2.Dynamic change of particle size andfractal dimensions of polyferric chloride-humic acid (PFC-HA) flocs;聚合氯化铁-腐殖酸(PFC-HA)絮体的粒度和分形维数的动态变化
3.Properties offractal dimensions of albic soil for radix ginseng culture;白浆土型人参栽培床土的分形维数特征
3)fractional dimension分形维数
1.Thefractional dimension of crack section was measured and analyzed.研究了经硅烷偶联剂处理碳纤维填充增强HPVC板材的力学性能,测量、分析了拉伸断裂面的分形维数,详细论述了数盒子法计算分形维数的原理和计算机的模拟过程。
2.The fractional characteristics of granularity distribution for sinter of Tangshan stainless steel corporation with different basicity were investigated by fractional theory and theirfractional dimensions were worked out by calculation.文章探讨了在不同碱度条件下烧结矿粒度分布的分形特征,并计算出其粒度组成的分形维数值。
3.The spatial distributions of porosity andfractional dimension of autotrophic and heterotrophic/autotrophic biofilms applied by direct current in the range of 0～25 A/m 2 were investigated by using the micro slicing technique and image analysis.采用微切片结合图象分析技术研究外电流 (≤ 2 5A/m2 )对自养、异养 /自养生物膜空隙率和分形维数的影响 。
4)Fractal[英]["fr?ktl][美]["fr?ktl?]分形维数
1.This paper proposes a new recognition algorithm based on fractal dimension and image center of gravity after the segmentation of marrow cell images in the clinical haematology and cytology atlas which can be used to extract.为了更好地完成骨髓细胞图像的分类识别,在对临床血液学及细胞学图谱中的细胞图像进行切分的基础上,提出了一种基于分形维数和图像重心的算法,用来提取每一细胞图像的分维特征。
2.A new wavelet-fractal technique for the automatic online clustering of extracellular multin euron recordings from the nervous system was presented.首先,我们应用多尺度小波变换对原始信号进行分解,得到4个子信号,计算子信号的分形维数,然后用KNN分类器进行分类。
3.When discuss the rule of fractal dimension and slurr.首先利用氮吸附仪等实验方法分析了10个典型煤种的微观孔隙结构,采用非线性的分形理论描述了其孔隙分形特征,并探讨了水煤浆的颗粒分形维数与成浆特性的相关规律,发现随着分形维数增大,水煤浆粘度增大并且最大成浆浓度变小。
5)fractal-dimension分形维数
1.All those studies need deal with the estimation of thefractal-dimension.由于分形维数提供了一种比较分形的客观依据，并能根据其定义与实际数据通过实验手段近似求得。
6)fractals and fractal dimension分形和分形维数
延伸阅读
分形维数分形维数fractaldimension描述分形最主要的参量。简称分维。通常欧几里德几何中，直线或曲线是1维的，平面或球面是2维的，具有长、宽、高的形体是3维的；然而对于分形如海岸线、科赫曲线、射尔宾斯基海绵等的复杂性无法用维数等于1、2、3这样的数值来描述。科赫曲线第一次变换将1英尺的每边换成4个各长4英寸的线段，总长度变为3×4/3＝4英尺；每一次变换使总长度变为乘以4/3，如此无限延续下去，曲线本身将是无限长的。这是一条连续的回线，永远不会自我相交，回线所围的面积是有限的，它小于一个外接圆的面积。因此科赫曲线以它无限长度挤在有限的面积之内，确实是占有空间的，它比1维要多，但不及2维图形，也就是说它的维数在1和2之间，维数是分数。同样，谢尔宾斯基海绵内部全是大大小小的空洞，表面积是无限大，而占有的3维空间是有限的，其维数在2和3之间。计算分形维数的公式是，式中ε是小立方体一边的长度，N（ε）是用此小立方体覆盖被测形体所得的数目，维数公式意味着通过用边长为ε的小立方体覆盖被测形体来确定形体的维数。对于通常的规则物体，覆盖一根单位长度的线段所需的数目要N（ε）＝1/ε2，覆盖一个单位边长的正方形，N(ε)＝（1/ε）2，覆盖单位边长的立方体，N（ε）＝（1/ε）3。从这三个式子可见维数公式也适用于通常的维数含义。利用维数公式可算得科赫曲线的维数d＝1.2618，谢尔宾斯基海绵的维数d＝2.7268。对于无规分形，可用不同的近似方法予以计算，也可用一定的适当方法予以测定。分维反映了复杂形体占有空间的有效性，它是复杂形体不规则性的量度。
