查询词典 graph theory

The fatigue is analyzed for the SENT specimen of TA6V titanium alloy at different stress ratio and on different stress level by the general finite element analysis software ANSYS. The dangerous fatigue location is predicted by the nodal stress Y-direction of the hemicycle notch for TA6V titanium alloy SENT specimen. Based on the local stress-strain method and the material S-N graph, the nominal stress-strain of the specimen is converted to the local stress-strain of the dangerous location by the elastic and plastic finite element analysis, thus the fatigue life is estimated by Miner fatigue damage accumulation theory and compared with the fatigue test of small crack growth.

借助大型通用有限元分析软件ANSYS对TA6V钛合金SENT试样在不同应力比和不同应力水平下进行疲劳分析，根据SENT试样缺口处的应力状态分布预测疲劳危险部位，采用局部应力应变法，结合材料循环的S-N曲线，通过弹塑性有限元法将构件上的名义应力谱转换成危险部位的局部应力应变谱，从而根据危险部位的局部应力应变历程采用Miner累积损伤理论对构件的疲劳寿命进行估算，并与疲劳小裂纹试验数据进行比较分析。

The goal is to simplify the neural-computing of biovision process modeled inthe Boundary Contour System of FACADE theory, and to extract subjective contour in.a new way. The procedure consists of DOG filtering, cooperative filtering,post-processing of cooperative cues and regrouping of endpoints, corresponding to theoriented edge filtering by simple cells, cooperative filtering by bipole cells and end-stopeffect formulated by hypercomplex cells in biovision system respectively. The last oneis an algorithm based on connection relation graph, which judges whether two keypoints should be connected according to their positions and orientations and thenconnect the key points that Should be connected to complete the subjective contour.

本文主要完成了以下工作：一是针对张量投票方法处理主观轮廓时出现的问题进行了改进，并依据矩阵的特征值摄动理论分析了该方法误差产生的原因以及迭代对其影响；二是用图像处理方法代替FACADE理论中复杂的细胞动力学方程，提出了一种基于视觉竞争合作机制的轮廓组织及缺口修复算法，该方法通过DOG滤波器组、合作滤波器组和张量投票等方法分别模拟视觉系统中的简单细胞有向滤波、双极细胞合作滤波和终端截断后端点重组等主观轮廓形成过程；三是提出了一种基于可连接关系图的算法解决轮廓组织及缺口修复问题，该方法在轮廓特征提取的基础上，根据关键点的位置和取向信息判断其可连接关系，进而连接具有可连接关系但没有实际连接的关键点，最终完成轮廓缺口的修复。

Based on the summarizing of the exiting algorithms of the texture mapping and antialiasing, this paper goes deeply into the basic theory and processing of texture mapping. The texture compress algorithm which can satisfy the need of the memory and time is given for the stochastic sampling in the inverse texture mapping; the geometry transformation in the texture mapping are discussed and the concepts of the unitary parametrization and the patch parametrization is proposed, some kinds of the unitary parametrization methods of parametric surfaces and the geometry transformation in the patch parametrization are also presented; in order to solve the aliasing in the parametrization of intermediate surface-sphere in two-part texture mapping, an area-preserving transformation is presented also; to improve the quality of the graph the aliasing in the texture mapping is analyzed from the aspect of signal process, and the modified summed-area tables algorithms is proposed; the distortion of the scanline conversion algorithms under perspective transformation is analyzed and the proper interpolation algorithm is presented so the aliasing problem of the polyhedral object after the unitary parametrization is efficiently solved.

本文在总结现有的纹理映射和反走样算法的基础上，深入研究了纹理映射的基本原理与过程，根据反向纹理映射对纹理随机采样的特殊要求，提出了一种可满足存储空间和寻址时间的纹理压缩存储算法；通过对纹理映射中几何变换理论的进一步深入探讨，提出了整体参数化和面片参数化的概念，并给出了参数化曲面的各种整体参数化方法和面片参数化的几何变换形式；针对现有的两步映射算法所存在的中间曲面—球面的参数化问题，提出一种等积映射方法，较好地实现了由非参数化面片拼接而成的多面体表面的纹理映射；从信号采样的角度深入分析了纹理映射中走样产生的原因，提出了改进的区域求和表算法，使图形生成的效果有所提高；还分析了一般的扫描线算法在透视变换中所存在的问题，提出了一种正确的插值算法，从而解决了整体参数化后多面体表面纹理映射的几何变形问题。

After studying the theory of combined signal processing with acoustic pressure and particle velocity, a method of direction estimation underwater, which is based on intensity measurement using an acoustic vector sensor, is presented. In the low frequency field with kinds of line-spectra, azimuth angle estimation is achieved based on the probability density statistics and bar graph approach. It can preferably resolve the problem of left/right bearing resolution and estimate the direction of space.

为了对水下目标进行定位，基于声压与振速联合信号处理的理论，研究了复声强法对水下目标信号的定向技术，并使用概率统计和直方图的理论对目标的方位角和俯仰角值进行了估计，在线谱分量存在的低频段对估计角度进行了概率统计，较好地解决了左右舷的分辨问题，实现目标的全空间无模糊定向。

And according to the goal modeling gained from the above method, this thesis gives a new goal-driven software architecture modeling method based on the theory and principle of graph grammar presented by Le Metayer.(3) Based on GQM approach, integrating the research status, this thesis presents a process-oriented metrics for software architecture adaptability.

该方法在GQM方法的基础上，提出了面向过程的度量方法建模步骤、引入了数据项分层和确认分层、增加了度量的结构化描述和定义了新的度量指标，对GQM方法进行了进一步的扩展和改进。

On the basis of the researching the neural network theory, presenting the neural network model (N-SearCut model) for searching for minimal cutset of a graph, proving the stability of this model, analyzing the dynamic behavior of this model, deducing a series of corresponding theorems and affording an academic fundaments for solving optimization problem based on this model.

在研究人工神经元网络理论基础之上，提出了搜索图最小割集的神经网络模型——N-SearCut模型，证明了该模型的稳定性，分析了该模型的动态特性，导出了一系列的定理，为运用该模型进行优化问题的求解提供了理论依据。

Setting forth the realization method by hardware for searching minimal cutset of a graph with N-SearCut model. Then this method affords theory and practice fundament for solving this puzzle of searching for minimal cutset in reliability evaluation of power system.

提出了运用N-SearCut神经网络模型搜索图最小割集的全硬件实现方法，为更理想地解决网络可靠性评估中出现的最小割集搜索这一瓶颈问题提出了新的思路，提供了理论和实践依据。

This paper states the fundamental theory of management innovation which covers the overall systematic inquiry into definition and content of management innovation and analyzes executor, process and motive of management innovation. It discusses Family Enterprises" definition and classification. At the same time, this paper defines family administration and its characteristic and lays emphasis on the analysis of the cause of family management taking form in the Family Enterprises and its advantages and disadvantages. It indicates the significance of management innovation which Family Enterprises implement. After analyzing the graph of management innovation target model, combining concrete states of our country" s Family Enterprises, it puts forward countermeasures of management innovation from the view of concept, strategy, system and orgnization and it also puts forward exterior sustained system that the government needs to do in order to fit a complete set.

论文阐述了管理创新的基本理论，对管理创新的定义和内容做了全面系统的理论探讨，并分析了管理创新的主体、动因和过程；论述了家族企业的定义、分类以及家族化管理的定义和特点，重点分析了家族企业形成家族化管理的原因及利弊，指出家族企业实施管理创新的意义；通过对管理创新目标模式图的分析，结合当前我国家族企业的具体情况，从观念、战略、制度以及组织等方面提出了管理创新的对策，并主要从政府的角度提出了家族企业成功实施管理创新的外部支撑体系。

On basis of recursion theory of deep optimization traversal, stimulated the logical graph of water project by visual programming technology, and applied it to the west water source project of Weihe valley.

运用图论中节点连接表法描述各水源之间的逻辑联系关系，探索了分析流域拓扑结构的基本思想；以深度优先遍历的递归理论为基础，采用可视化编程技术，用计算机模拟了与研究对象有水力联系的水源工程逻辑结构图，并以渭河流域西部水源工程为研究对象进行了实现。

Based on the generalized-graph-convergence theory, by using the resolvent operator technique about-monotone mappings, we suggest a new perturbed iterative algorithm to compute approximate solutions of this class of variational inequality.

依据广义图像收敛理论，并应用关于h，η-单调算子的预解算子技巧，作者提出了一种新的扰动迭代算法来解这类变分不等式。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。