查询词典 spatial point

The dissertation gives a self-contained definition of Complex boundary and interior based on point set topology so that the Complex was consistent with the common description of spatial objects. It is in favor of a unifying between nature description and theory representation of spatial entities in 3DGIS.

本文基于点集拓扑学理论，对复形的边界和内部进行了完备性定义，使得空间实体的复形表达符合人类对空间对象的直观认识，有助于在3DGIS中实现空间实体的自然描述与理论表达的统一。

Chapter 4: Analyze the influence of industry development to the current spatial structure, and point out that there are many problems in the current spatial structure which prohibit industry development.

第四章分析了产业发展对现状市域空间结构的影响，以及市域空间结构中存在的问题对产业发展的制约。

Function in analysis of spatial point pattern is one of the prevalent analysis tools for studying population spatial pattern,and the method of edge correction is the key part of the function.

点格局分析函数是分析种群空间分布格局的常用方法之一，其关键问题是边缘效应的校正。

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。

Spatial weight matrix ; spatial autocorrelation ; discrete point ; urban land price ; Changzhou

空间权重矩阵；空间自相关；离散点；城市地价；常州

The spatial market principle and spatial critical point principle, the sixth and the seventh, are related to the analytic methods in economic geography.

经济地理学的理论通常针对其具体的研究对象，本文试图从这些理论中提炼出指导经济地理学家思考和分析，以及重复出现在这个学科中的要点。

Spatial data;Spatial interpolation;Estimated point;Classification;Arithmetic

空间数据；空间插值；参估点；分类；算法

Based on the principle that a spatial distributed source can be regarded as superposition of many of point sources in a continuous spatial area, an Electro-Magnetic Vector Sensor model is proposed. Theoretical analysis and the 1 order approximate expression are given. The model's identifiability is also discussed.

本文通过&分布源是在一定空间分布的多个点源信号的迭加&的认识，首次提出了电磁矢量传感器的分布源模型，给出了理论表达式和一阶近似表达式，分析了单个电磁矢量传感器的分布源模型的可辨识性问题。

Based on the principle that a spatial distributed source can be regarded as superposition of many of point sources in a continuous spatial area, an Electro-Magnetic Vector Sensor model is proposed. Theoretical analysis and the 1 order approximate expression are given. The model's identifiability is also discussed.

本文通过&分布源是在一定空间分布的多个点源信号的叠加&的认识，首次提出了电磁矢量传感器的分布源模型，给出了理论表达式和一阶近似表达式，分析了单个电磁矢量传感器的分布源模型的可辨识性问题。

A geostatistical method was put forward to analyse the spatial variability of combined heavy metal pollution in soils based on GIS. The spatial analysis showed a combined Cu and Cd pollution occurred in the research area, Cu was mainly concentrated in surface layer, but Cd had high concentrations in 0-60cm depth of soil profile. The correlation analysis revealed that the point source pollution was dominated by the pollution let-out of the smeltery.

研究首先建立了基于GIS的地统计学采样和分析方法的步骤，然后着重分析了土壤铜镉复合污染的空间变异特征和影响因素，发现研究区土壤铜镉复合污染为点源污染类型，铜在土壤中具有明显的表聚性，而镉容易迁移，在0-60cm的土层中均形成污染，同时土壤的复合污染已经在水稻籽粒中引起污染物超过食品食用标准。

My father is over 60 years old, and he lifts weights every day.

我爸爸六十多岁了，他每天都练习举重。

Then in a serious tone she declared:"It doesn't pay, dear boy, to look like a ninny with one's wife the first night."

两眼湿润了，她把身子蜷得很小，这样似乎可以更好地闻闻自己。