空间实体

提出基于面的数据组织方式是三维GIS空间实体数据模型选择的主要依据，三维形体的数据组织以表面表示模型为主，形体数据嵌入到GIS矢量结构中。

It considers that the basic selection foundation of 3D GIS spatial entity data model is the data organization mode base on surface . The data structure of 3D SE is mainly Surface Representation method and the data of SE is embedded into the GIS vector structure .

基于GIS空间实体的自动拓扑模型设计与实现

Design and Realization of the Automatic Topology Model Based on GIS Spatial Entity

时态GIS的空间实体关联技术应用研究

Application research on spatial entities association technique in temporal GIS

折线是GIS中表达线形空间实体的基本制图要素。

The polyline is one basic cartography factor to express the lineal spatial entity in vector GIS .

基于OpenGL的多层三维空间实体叠加建模

Overlay Modeling of Multi & Layer 3D Spatial Entity Based on OpenGL

而目前许多GIS软件所采用的空间实体数据模型并不包含拓扑信息，故难以定量地计算、分析地理对象间的空间邻接关系。

Due to its scarcity of topological information , the entitative data model employed by lots of popular GIS software largely encumbers the quantitative analysis of spatial adjacency .

DXF格式地理空间实体的GML表示

GML Representation of Geographical Spatial Entities in DXF Format

方向关系在GIS中占据着十分重要的地位，由于它的模糊性和依赖空间实体形状的特殊性，使得它的形式化描述和判断比较困难。

Directional relation is very important in GIS , But because of depending on the size of objects , it is difficult to make a formal description and determination .

它能有效地表达各种三维地质现象，也可以更好地与传统的多层TIN模型结合，维护好空间实体的拓扑关系。

The STP mode can be combined with the conventional multi-layer TIN model . It can effectively express 3D geological objects and maintain the topological relationship .

首先通过构网、断边，来获得空间实体的初始划分；然后利用K-means算法对初始划分的结果做进一步的聚类，得到最终的聚类结果。

First , the initial division of spatial entity is obtained through constructing triangular network and off-line . Then , the final clustering result is reached through further clustering by K-means algorithm .

提出了面向地理空间实体对象树模型（FOOT），首先重点讨论了空间分区、空间聚簇、空间索引，然后分析了四层结构设计中的数据库服务层、应用接口层、应用层相关技术。

A geo-spatial data model of feature-oriented object tree ( FOOT ) is presented . Spatial partitioning , spatial clustering and spatial indexing were emphatically discussed . Database services , application interface and application services in Four Tier Architecture are analyzed .

论文建立了以空间实体多表达为基础的空间抽象数据类型（SADT）以及SADT的代数规范体系。

This paper presents spatial abstract data type based on spatial entity multiple representation and its algebra-ic specification .

介绍采用通用有限元软件ANSYS，对预应力异形箱梁建立空间实体有限元单元模型，并结合平面梁单元计算结果对比研究其结构受力特性。

In this paper , the universal finite element analysis software ANSYS is used to establish a spatial solid finite element model for the irregular shape PC box girders and the structural behavior of the girders is comparatively studied in accordance with the calculation results of the plane beam element .

建立了野外地质空间实体E-C-R模型、类层次结构及信息结构模型，为系统实现及系统集成提供了可行的技术开发路线。

In this paper , the building of E-C-R model of field geological spatial entity , class hierarchy and information structure model are discussed . These models have been the base of this system development and satisfactory effect has been achieved .

空间实体与薄板组合结构的数学模型

Mathematical Model of a Junction between Linear Elastomer and Thin Plate

一种自动提取栅格数据中空间实体的算法

An algorithm for automatic extraction of spatial entities from raster data

分析了地理空间实体类型之间的语义关系和语义相似度的特点；

The characteristics of semantic relations and semantic similarity are described .

多层三维空间实体普遍存在于现实生活中。

Multi & layer 3D spatial entity exits widely in morden society .

三维空间实体间拓扑关系的矩阵描述

A Matrix for Describing Topological Relationships Between 3D Spatial Features

高维空间实体重建理论及应用研究

Re building Theory of High dimension Space Entity and its Application Study

空间实体碰撞预报算法及其自适应步长设计

Space Entity Collision Prediction Algorithm and Self-adaptive Simulation Step design

空间实体要素与城市房地产投资的关系研究

Relationship between the Elements of Spatial Entities and Urban Real Estate Investment

该方法既能表示空间实体的连续运动，也能表示其离散变化，为空间运动对象时空数据模型的建立奠定了基础。

This is a foundation for building spatio-temporal data models of moving objects .

基于流形拓扑的三维空间实体形式化描述

Formal Framework of 3D Spatial Features and Topological Property Based on Manifold Topology

面向对象空间实体矢量描述方法研究

Research on Object-oriented Vector Method in Describing Spatial Entity

面向野外地质填图的空间实体对象表达计算机辅助区域地质填图

Object styles of spatial entity for field geological mapping based on object-oriented method

空间实体有限元仿真模拟及实时监控

Construction Process in Finite Brick Element Analysis and Real-time Monitoring of Space Solid

地籍空间实体及其时空拓扑关系

Cadastral Spatial Entity and Its Spatio-temporal Topology Relationship

本文所述的方法适用于多种复杂的空间实体关系。

This method can be applied in studying different kinds of complex spacial relationship .

按空间实体单元有限元法计算弯拱桥，能够较好地符合结构的实际受力状态。

And the spatial 3D-solid finite element method in satisfied for the bend-arch bridges analysis .