分布的
- 与 分布的 相关的网络例句 [注:此内容来源于网络,仅供参考]
-
In view of crosswell and 3D VSP layout, we use high resolution Radon transform based on Cauchy distribution to perform Radon transform for hole data. In this process, we study discrete dip overlay operator, improve damping factor that affects Radon energy convergence in order to let Radon energy converge, 6 resolve leggy in Radon data, and decouple smoothing effect among each energy group, we use Cauchy distribution to regularize data, let energy focus on one point, and improve Radon resolution. All these work well in wavefield separation.
在Radon变换原理分析基础上,采用基于柯西分布的高分辨率线性Radon变换对井孔数据进行Radon变换,其间通过对离散倾角叠加算子求取的研究,及对影响Radon能量收敛的重要参数阻尼因子算法的改进,使数据在Radon域以能量团的形式呈现,得到很好的收敛效果,基本解决了Radon域数据的一定程度的拖尾现象,消除了各能量团之间的平滑效应,采用柯西分布来规则化数据,提高了Radon域的分辨率,Radon域能量也收敛到一个点上,有利于上下行波或纵横波波场分离。
-
The study is carried out that the comparison of fine root production, decomposition and distribution along with Korean pine and broad-leaved climax forest succession; the fine root contribution to the belowground C and N storage along with Korean pine and broad-leaved climax forest succession; and the comparison of belowground C and N storage among the Korean pine and broad-leaved climax forest, three dark-conifer forests, a betula ermanii forest along altitude.
研究内容包括:原始阔叶红松林及其不同演替阶段的次生林中细根的生长和周转、分解与分布的特征,阐明在不同演替阶段细根的变化;原始阔叶红松林及其不同演替阶段的次生林中细根对根系、土壤和林地地下的碳、氮贮量的影响,分析在不同演替阶段细根周转对地下碳、氮贮量的贡献;以及对不同垂直海拔高度分布的不同类型的原始森林中细根和根系生物量的变化,及细根对根系、土壤和林地地下碳、氮贮量的贡献进行了研究。
-
This approach not only inherits the advantages of absolute density based algorithms which can discover arbitrary shape clusters and are insensitive to noises , but also efficiently solves the following common problems: clustering results are very sensitive to the user-deflned parameters, reasonable parameters are hard to be determined, and high density clusters are contained fully in coterminous low density clusters. With this approach, incremental clustering can also be supported effectively by defining the affected sets and seed sets of the updating objects in this approach.
聚类算法的有效性问题主要表现在三个方面:其一,聚类算法大多要求用户输入一定的参数,例如希望产生的簇的数目,而这些参数通常难以确定,特别是针对高维空间中稀疏分布的实际应用数据集,用户几乎无法给出合适的算法参数,因此非专业用户需要与数据分析专家密切配合才能保证获得理想的聚类结果,导致算法的使用极为不便;其二,聚类结果对于输入的参数值过于敏感J,往往参数值的一些轻微变化却产生聚类结果的很大差异;其三,对于高维的实际应用数据集,其数据分布往往是稀疏的、杂乱的,很难为算法选择全局的参数进行准确的聚类分析,使得聚类的质量难以保证。
-
The main contributions of the second part of this dissertation are focused on the cryptographic properties of logical functions over finite field, with the help of the properties of trace functions, and that of p-polynomials, as well as the permutation theory over finite field: The new definition of Chrestenson linear spectrum is given and the relation between the new Chrestenson linear spectrum and the Chrestenson cyclic spectrum is presented, followed by the inverse formula of logical function over finite field; The distribution for linear structures of the logical functions over finite field is discussed and the complete construction of logical functions taking on all vectors as linear structures is suggested, which leads to the conception of the extended affine functions over finite field, whose cryptographic properties is similar to that of the affine functions over field GF (2) and prime field F〓; The relationship between the degeneration of logical functions and the linear structures, the degeneration of logical functions and the support of Chrestenson spectrum, as well as the relation between the nonlinearity and the linear structures are discussed; Using the relation of the logical functions over finite field and the vector logical functions over its prime field, we reveal the relationship between the perfect nonlinear functions over finite field and the vector generalized Bent functions over its prime field; The existence or not of the perfect nonlinear functions with any variables over any finite fields is offered, and some methods are proposed to construct the perfect nonlinear functions by using the balanced p-polynomials over finite field.
重新定义了有限域上逻辑函数的Chrestenson线性谱,考察了新定义的Chrestenson线性谱和原来的Chrestenson循环谱的关系,并利用一组对偶基给出了有限域上逻辑函数的反演公式;给出了有限域上随机变量联合分布的分解式,并利用随机变量联合分布的分解式对有限域上逻辑函数的密码性质进行了研究;给出了有限域上逻辑函数与相应素域上向量逻辑函数的关系,探讨了它们之间密码性质的联系,如平衡性,相关免疫性,扩散性,线性结构以及非线性度等;讨论了有限域上逻辑函数各类线性结构之间的关系,并给出了任意点都是线性结构的逻辑函数的全部构造,由此引出了有限域上的"泛仿射函数"的概念;考察了有限域上逻辑函数的退化性与线性结构的关系、退化性与Chrestenson谱支集的关系;给出了有限域逻辑函数非线性度的定义,利用有限域上逻辑函数的非线性度与相应素域上向量逻辑函数非线性度的关系,考察了有限域上逻辑函数的非线性度与线性结构的关系;利用有限域上逻辑函数与相应素域上向量逻辑函数的关系,揭示了有限域上的广义Bent函数与相应素域上的广义Bent函数的关系,以及有限域上的完全非线性函数与相应素域上向量广义Bent函数之间的关系;给出了任意有限域上任意n元完全非线性函数存在性与否的完整证明,并利用有限域上平衡的p-多项式的性质给出了有限域上完全非线性函数的一些基本构造方法。
-
Firstly, we collected and sorted out the GPS data, established the uniform velocity field for the Chinese mainland and the surrounding regions, and the horizontal deformation field relative to the Eurasia plate; Secondly, we established a motion model for the entire rotation and homogeneous strain of the first and second level blocks in Chinese mainland, analyzed the motion pattern and strain behavior of active blocks in Chinese mainland, as well as the motion pattern of principal fault zones in Chinese mainland; Thirdly, considering the heterogeneity of strain distribution inside a block and supposing that the strain tensor inside the block is the linear function of location, we derived and established an equation for the entire rotation and linear strain of block and a motion model for the entire rotation and linear strain of principal blocks in Chinese mainland; We also calculated the principal strain field and the maximum shear strain field in Chinese mainland and the surrounding regions, analyzed the basic characteristics of strain field in Chinese mainland, as well as the relationship between the spatial distribution of strain field and large tectonic zones; Finally, we established the 2-D geotectonic model and digital model for Chinese mainland and the surrounding regions, calculated the stress field in Chinese mainland and the surrounding regions, and analyzed the basic features of stress field in Chinese mainland and the principal driving force for the motion and deformation in Chinese mainland.
收集整理了已有GPS资料,建立了中国大陆及周边地区统一的速度场以及相对欧亚板块的水平形变场;建立了中国大陆一、二级地块整体旋转与均匀应变的运动模型;分析了中国大陆活动地块的运动状态,应变状态,以及中国大陆主要断裂带的运动状态;考虑到一个块体内部应变张量空间分布的非均匀性,假设块体内部的应变张量是位置的线性函数,推导建立了块体整体旋转与线性应变方程,建立了中国大陆主要地块整体旋转与线性应变的运动模型;计算了中国大陆及周边地区的主应变场与最大剪应变场,分析了中国大陆应变场的基本特征,以及应变场的空间分布与大型构造带的关系;建立了中国大陆及周边地区二维的地质构造模型和数值模型,计算了中国大陆及周边地区的应力场,分析了中国大陆应力场的基本特征以及中国大陆运动、形变的主要驱动力。
-
China has five notable FDI patterns that are substantially distinct from the patterns observed in the other countries or regions:(1) the highly reliance on FDI,(2) the paradox of the high deposit residues in the state-owned commercial banks and the continuingly large amount of FDI,(3) the small investment scale of FDI,(4) the extremely decentralized industry distribution of FDI, and (5) the concurrence of the nation-wide FDI popularization and imbalance of the FDI geography distribution.
在中国利用FDl的过程中,出现了一系列有别于其他国家和地区的独特现象,如:对FDI的过度依赖现象;高储蓄余额和巨额FDI并存的矛盾;PDI企业的平均投资规模低于中型企业的平均投资规模;FDI的行业分布的极端分散;FDI地理分布的不均衡性与普遍性的共存等。
-
The major achievement of this paper is: Based on characteristics of the traffic data distribution, execute pattern recognition operations on traffic condition on two dimensions by clustering, then use BP neural network to describe and forecast traffic flow aiming at each pattern. Making use of classic flow-occupancy inverse "V" model, implement polynomial fitting using least-squares algorithm and statistics method on flow curves to detect outliers which are proved to be not accord with practice through the actual implement, then use the moving average model to recorrect the outliers and absent. Make correlation analysis on muti-direction flow queues of the intersection and ones of upriver intersections, choose flow queue with high correlation as assistant one to improve the error tolerance of the prediction system, at the same time we can use the method to give an estimation of flow in intersection with out sensors. We design and implement an SOA(Service-Oriented Architecture)-based UTDD(urban traffic data mining development) with high expansibility and performance, which implement unified management and call of the data-mining application though defining a XML-based description of data-mining process and a common interface to call data-mining process, finally we build traffic flow prediction application model on UTDD.
根据交通流量数据分布的特征,提出基于k-means的二次聚类方法,对交通流量在流量大小和时间上进行模式划分,进而对各个交通流模式进行基于BP神经网络的描述和预测,从而提高模型对流量预测的精度; 2)根据流量/时间占有率倒&V&字形曲线分布模型,提出基于最小二乘法的三次多项式曲线拟合和统计方法的异常检测方法,实际应用表明该方法能够有效识别异常数据,然后根据移动平均算法对异常数据进行修正; 3)基于序列相关性分析,分别对预测方向的交通流量数据序列、上游路口相关序列以及预测路口其它各个方向上的交通流量序列进行分析,选择相似性流量序列,作为辅助序列提供其他没有检测器路口的流量估计; 4)设计和实现了基于SOA(Service-Oriented Achitecture)的高性能、可扩展的智能交通数据挖掘系统UTDD,该系统通过定义基于XML的数据挖掘过程描述和通用的过程模型接口,实现数据挖掘应用的统一管理和调用,最后在UTDD上建立了基于路口流量预测的应用模型。
-
First, a full three-dimensional numerical model is developed, which considering not only the rib resistance to the species, but both the single- and two-phase flow and transport in the gas channels and diffusers at both the anode and cathode sides of PEM fuel cell. Two sets of boundary conditions, one for a conventional flow field and the other for an interdigitated one, are presented. A detailed discussion of the numerical techniques for the PEM fuel cell model is given with a flow diagram to provide an overview of the solution procedure using FORTRAN language.
该模型考虑了双极板上流道间的筋部对于反应气体传递阻力以及电流密度分布的影响,从而使模型具有三维特性;建模过程中进一步考虑了流道和扩散层中可能存在的液态水,从而将现有的单相流动模型拓展成为两相流动模型,因此,该模型可以同时模拟电池内部阴极、阳极侧流道和扩散层中两相流动的发生和分布情况;分别给出了平行流场燃料电池和交指型燃料电池的边界条件;详细讨论的三维模型的耦合求解算法和技巧;用实验数据验证的该模型的准确性。
-
The influence of recessing in adh es ive layer with high elastic modulus on the peak stress of joint is not evident so that it would improve the actual strength of joint markedly based on the load bearing ability not being affected evidenly . On the other hand , the recessing in the joint with low elastic modulus adh es ive caus es the peak stress es increase evidently that may decrease the nominal and actual strength of the joint markedly .
对胶层和被粘物中应力分布的数值分析结果表明:胶层中的间隙对接头端部的应力分布无明显影响,但对间隙附近的应力峰值影响较大;随着胶粘剂弹性模量的增大,间隙附近的应力峰值有所降低;对于高弹性模量胶粘剂接头,胶层中的间隙对接头的应力峰值无明显影响,在不降低接头名义强度的同时可使得接头的实际强度显著提高;而对于低弹性模量胶粘剂接头,间隙使得接头上的应力峰值明显上升,可能导致接头的名义强度和实际强度显著降低。
-
Firstly, because the triangle constrained matching propagation begins with the initial corresponding triangulations formed by a few seed points in the stereo pairs, this dissertation studies the affects of different numbers and different distributions of seed points on the image matching results through experimental analysis, and proposes a seed point selection strategy for different image texture conditions, an automatic selection algorithm is also designed that gives good distribution quality for a defined number of seed points.
首先,针对匹配传播过程中的种子点选取问题,通过实验分析研究了不同数量与分布的种子点所构成的初始三角网对匹配结果的影响,进而提出了不同影像条件下的种子点选取策略和一种自动提取一定数量、满足一定分布均匀度的种子点自动选取算法;其次,研究了海量数据情况下同名三角网的快速构建、数据组织存储与局部动态更新的方法;在此基础上,本文提出了随机传播、基于三角形拓扑关系的邻近传播和顾及纹理特征的自适应传播等三种传播策略,分别介绍了其详细的实现算法,并通过实验分析对这几种传播策略进行了比较,实验结果证明自适应传播方法在匹配的可靠性上最优。
- 推荐网络例句
-
And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.
47:5 法老对约瑟说,你父亲和你弟兄们到你这里来了。
-
Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.
提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法,同时,采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。
-
Hey Big Raven, The individual lies dont matter anymore - its ALL a tissue of lies in support of...
嘿大乌鸦,个别谎言的事不要再-其所有的组织的谎言,在支持。