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Based on the histogram multifractal spectrum estimation, a kernel density estimation of multifractal spectrum is suggested, and moreover a edge dection method by multifractal spectrum is present, simulation results show that image edges detecting through this method have good global and local character, and are more finner.
在多重分形频谱直方图估计方法的基础上,提出了一种基于核估计的多重分形频谱估计方法,同时提出了一种基于多重分形频谱分析的图象边缘检测方法,利用该方法所检测出的图象边缘具有良好的全局性和局部性,也就是说它能够检测出比较精细的图象边缘; 4。
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We have tested our method on some famous data sets, and the results of a five-fold cross validation are compared to those by C5.0. The experiments show that our method works better in practice.
我们利用一些著名的资料集来测试我们所提出的方法,并且选用最好的决策树删减方法,以五摺交叉评比方式的结果跟C5.0方法比较,在实验数据显示,我们的方法有较好的结果。
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The following is the main works of the paper.1 The weight and the center of weight of the whole hull, analysis by statics the weight of steel, the equipment, oil, water, crew and cargoes etc., conclude a method of calculating the weight and the center of weight of the whole hull,2 Work out the series of formula of distributing the water pressure of wave to the corresponding nodes on the plate, conclude a method of calculating the flotage and the center of the flotage,3 Analysis the method of adjusting the equilibrium of the hull, the finite element module of the hull, and the character of the linetype, by ship statics principle, work out a series of formula of adjusting longitudinal slant, preliminarily confirm the parameter and the range,4 Program in FORTRAN, and link into ANSYS, for auto-loading when analyzing the whole hull by the FEA,5 Make the finite element module of a real hull, calculate the weight and the center of the weight, the flotage and the center of the flotage, compare the result of manual calculation with the computed result, analysis the deviation of the program.
3通过分析船舶常用浮态调整方法、船体结构有限元模型和船体线型特征,运用船舶静力学原理,推导船舶浮态纵倾调整公式,分析了基于船舶结构有限元模型的纵倾浮态调整方法和初步探讨了纵倾浮态调整中的参数确定方法以及初步确定这些参数的取值范围。 4用本文推导的计算方法和公式开发FORTRAN程序,并编译连接到有限元软件ANSYS中,用于进行整船结构有限元分析时自动加载计算。
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The damping ratio is studied by the complex mode method, the forcing decoupling method, and the equivalent damping method based on deformation energy.
采用复模态设计方法、强解耦振型分解法、基于变形能的等效阻尼法三种方法分别对不同情况的消能减震结构阻尼比进行研究,得到选择消能减震设计方法和不同方法计算精度的规律,对消能减震结构设计具有参考价值。
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The damping ratio is studied by the complex mode method, the forcing decoupling method, and the equivalent damping method based on deformation energy.Some rules for choosing the design method and the calculation accuracy of the structure are obtaine...
采用复模态设计方法、强解耦振型分解法、基于变形能的等效阻尼法三种方法分别对不同情况的消能减震结构阻尼比进行研究,得到选择消能减震设计方法和不同方法计算精度的规律,对消能减震结构设计具有参考价值。
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The results have been compared with that by using coupled mode theory , Rouard s method and fundamental matrix method, and the accuracy.
用这一方法计算了均匀光纤光栅布拉格相位匹配、失配情况和非均匀光纤光栅的反射系数,并将其结果与用耦合波理论、Rouard方法以及基础矩阵方法的结果进行了比较,并检验了这些方法的精度。
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The fundamental theory of surface reconstruction is further discussed which leads to the finding that there are some disadvantages in Bezier and NURBS. So both Bezier and NURBS are chosen as the fundamental methods to achieve surface reconstruction.
对曲面重建基本原理进行深入分析,针对Bézier方法和NURBS方法的各自特点,在系统中选择Bézier和NURBS两种方法作为系统软件曲线曲面重构的基本方法,并实现曲面重构。
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This paper presents the speckle suppression technology which includes the soft threshold, the hard threshold and the Garrote function threshold method. It gives the contrast result of the three method. Analyzed the embedded zero-trees wavelet coding method, it presents a SAR image coding technology with the speckle suppression. Finally, it presents a compressed SAR image with the speckle suppression.
摘要该文讨论了相干斑抑制技术中软阈值、硬阈值和Garrote函数去噪的方法,并对这些方法进行了比较;文中在讨论了嵌入式零树编码技术的基础上,提出了采用基于相干斑抑制技术的图像编码方法,利用该方法实现了对SAR图像数据的编码处理,给出了相应的处理结果。
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Firstly a qualitative criterion for determining the space between adjacent sections in the sampling process and Gaussian smoothing algorithm is proposed. Then a topological reconstruction method is given. At last a new reconstruction method based on the similarity between adjacent sections is proposed.
首先提出了确定断层间距的定性方法和数据平滑处理的高斯方法,然后给出了一种拓扑重构方法,最后提出了一种基于相邻层轮廓相似性的曲面重构新方法。
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In this approach ,the sketch is designed with simple elements such as points , segments, circles or Child-Graphs which is combination of above simple elements ;geometric elements is designed in sequence can implement the function of unwell defined(less-constrain) parametric design.2Dand 3D constrains is treated consistently.
不同于常见的用底层图元进行设计的二维全约束求解方法,提出并实现了一种基于子图的序列化草图设计方法。使设计者既可用通常的点、线、圆弧等的基本图元,又可用高层的子图设计,可加快设计过程;序列化设计求解方法可实现变量化设计;基于标识的约束模型,使该方法可统一二、三维约束求解。
- 推荐网络例句
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I will endeavour to find you some assistance.
我尽力帮你找人帮忙。
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At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.
起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像,后来回台湾,甚至去年在北京,居然也四处看见她的海报,才惊讶她的魅力之大。
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Ah may dee:You are chinese living in a democratic country.
你是居住在民主国家的中国人吧。