基本运算

First, we discuss the classification of existing spatial indexing methods and point out the problems of them. Second, the approximate representation of spatial objects is given. Third, the structure and the algorithm of CP tree, which based...

本文首先介绍了目前常用的几类空间索引技术及其特点，接着讨论了面向地理信息的空间索引技术面临的基本问题，提出了基于凸多边形的空间索引结构—— CP-树，并侧重分析了其空间运算算法及时空效率，最后指出了空间索引技术所存在的问题及下一步的研究方向。

The theory foundation was proposed to simplify calculation of the reliability analysis by regarding the basic random variables as uncorrelated variables and to determinate the effect of the correlation coefficients on the structural reliability and their importance level.

本文研究结果为将基本随机变量作为独立变量处理从而简化可靠性分析运算，或确定相关系数对结构可靠性的影响以及重要程度提供理论根据。

The appendix also gives the application for example, Z transform table, matrix transformation and operations, stochastic processes, and basic materials such as Matlab functions.

附录中还给出了应用举例、Z变换表、矩阵变换和运算、随机过程及Matlab函数等基本材料。

Taking Changling County, Zhenlai County and Da'an City of Jilin Province as researchareas, based on remote sensing data, graphics operation and spatial analysis are carried out indifferent points of views, including temporal, spatial, scale and landscapeetc; all aspects analysis of this dissertation are abstractively expressed by digital graphics andseries of curves which are not stick to one pattern to discussing multi-dimension andcomplicated attributes of the salinized process. Linking up temporal-spatial characteristicswith landscape indices while combining mathematics model and Geo-informatic TUPUmodel, this dissertation puts forward the fundamental frame: temporal-spatial evolvementpattern, spatial extension process analysis and landscape characteristics analysis of salinizedland. Temporal-spatial evolvement pattern analysis extracts the essential quantity features andtransformation modes of salinized land, and also analyzes patches spatial geometricalparameters scale feature; spatial extending process analysis discusses the change rate andecological modes; landscape feature analysis utilizes landscape graphics indices to describesalinized land microcosmic graphics features and changes.

信息图谱模型为土地盐碱化研究提供了一种谱系化、定量化与定位化相结合的研究方法，本文选取吉林省西部盐碱化典型区域长岭县、镇赉县、大安市作为研究区，以遥感影像为基础数据，在GIS技术支持下，从时空变化、尺度效应、景观特征等多个角度对盐碱化土地进行图形运算、空间分析，通过不拘一格的数字化图形、曲线系列抽象表达出不同维度上的特征与规律，探讨土地盐碱化过程的多维性与复杂性，将盐碱化土地时空特征与景观特征衔接、数学模型与图谱模型结合，以盐碱化土地时空演变基本模式、空间扩展过程和景观特征分析为框架构建盐碱化土地信息图谱模型研究体系，发挥图谱模型数据挖掘、知识发现的特长，将宏观动态变化与微观特征相联系，进一步挖掘土地盐碱化过程与人类活动影响的关系，为探索研究区盐碱化土地成因、过程，预测其未来发展变化趋势及其对环境影响提供相关科学依据。

The basic principle and hierarchical frame of FSR decision-making solving for DN is proposed creatively based on reliable knowledge. The categoricalness and high efficiency of decision-making solution set for FSR are ensured. The principle layer controls and realizes the search range and realization mode. The hierarchy and subarea search is performed, whose optimal rule is considered at the same time in order to ensure the solving rapidity. The decision-making realization layer forms the operation sequence of switch based on the trunk network set algorithm. The categoricalness and high efficiency of decision-making solution set for FSR is ensured.

创造性的提出了基于可靠性知识的配电网故障恢复决策解集构造的基本原理和实现的层次结构：确保恢复处理决策解集构造的完备性与高效性；原则层控制实现解集的搜索范围及实现模式，按兼顾优化原则的分层、分区搜索并确保求解的快速性；决策实现层在实现模式和相应树干网集运算的基础上，形成恢复处理决策开关操作序列，确保决策开关操作序列形成的高效率。

In the end, the paper demonstrates the application of the model with two listed companies in China, Younger and Kelong. It makes some calculation based on the initial experts grading, and gets basic status of the two companies by the analysis of weights, relative importance and effect of each factor. The results from the model are not contradictious to those from professional credit rating companies, who usually evaluate firms through financial analysis and on-site investigation.

最后本文以上市公司雅戈尔和科龙为例，在专家初始评分基础上进行了在关运算，说明了模型的运用过程，通过关于因素权重分析、因素相对重要性分析和单因素作用分析得到了关于企业的基本状况，本文的结论和专业资信评价公司利用传统财务分析加上实地考察法的结果不矛盾，说明了本文建立模型的科学性和适用性。

Dev/urandom is similar, but when the store of entropy is running low, it'll return a cryptographically strong hash of what there is.

dev/urandom 基本相似，但是当存储大量图谱进行低级运算时，它将返回一个足够强度的密码哈希值。

The method of eliminating misproportion of gray level in different surface direction of the object is proposed.

图像中由于被摄物体表面法线方向不同和反射率不同将造成所摄影像灰度的不均匀，本文采用背景图像和编码图像两幅图像相除运算的方法基本消除了灰度不均匀现象。

This is a vast collection of computational algorithms ranging from elementary functions like sum, sine, cosine, and complex arithmetic, to more sophisticated functions like matrix inverse, matrix eigenvalues, Bessel functions, and fast Fourier transforms.

MATLAB 的工具箱函数库收集了大量的数学函数，从求和，正弦，余弦以及复杂的算术运算等基本函数，到矩阵求逆，矩阵求特征值，贝塞尔函数和快速傅里叶变换等复杂函数。

Linear frequency-modulated pulse is one of the most important large time-bandwidth product signals, but it demands large amount of calculations for digital processing.

针对TMS320C6201的特点，提出了在VLIW体系结构下，提高FFT并行运算效率的方法，从而使系统完成512点数字脉冲压缩的时间仅为124us，基本达到TMS320C6201的性能极限。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。