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   空间区域 在 自然地理学和测绘学 分类中 的翻译结果: 查询用时:0.452秒
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    That RCC model, n-intersection model andclassification invariant model have the same classification capability of topologicalrelations between 2-dimensional spatial areas is proved;
    证明了 RCC、n-交集与分类不变量模型具有相同的 2 维空间区域拓扑关系分类能力;
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    That 4-intersection model isnecessary and sufficient for classifying topological relations between 2-dimensionalspatial areas is proved, then these 3 different methods are unified.
    证明了 4交集模型对于分类 2 维空间区域间拓扑关系的充分必要性, 从而将 3 种不同的研究方法统一起来。
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    The translation procedure from the source schema to the integrated schema is discussed. Second, the dissertation addresses the global query rewriting issues of the service oriented spatial data integration.
    其次,论文研究了面向空间数据服务集成的全局查询重构问题,在关系代数等价变换基础上提出了空间数据服务全局查询重构和优化方法,并提出了面向分布式空间区域查询的副本处理方法和资源选择策略。
短句来源
    It is proved that RCC model, n-intersection model and classification invariant model have the same classification capability for topological relations between 2-dimensional spatial areas;
    证明了RCC、n-交集与分类不变量模型具有相同的二维空间区域拓扑关系分类能力;
短句来源
    That 4-intersection model is necessary and sufficient for classifying topological relations between 2-dimensional spatial areas is proved, then these 3 different methods are unified.
    证明了4交集模型对于分类二维空间区域间拓扑关系的充分必要性,从而将3种不同的研究方法统一起来。
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  spatial region
The correlation of signals received from a spatial region heated above the ambient medium is measured.
      
The functions are shown to determine a natural basis for the expansion of CFHH functions in the considered spatial region.
      
It is shown that either the presence of a magnetic flux in a finite spatial region or jumps in the field strength are necessary to generate a global potential.
      
Statistics of particles (smoke aerosol in the atmosphere) reaching a prescribed spatial region are analyzed.
      
Collective Cherenkov effect and anomalous Doppler effect in a bounded spatial region
      
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The development of formal models of spatial relations is an important topic in spatial reasoning, geographic information systems (GIS) and computer vision, and has gained much attention from researchers during the recent years. In particular significant progress has been made in the models of topological relations between spatial regions. The primary research contents, methods and advancements of formal analysis for topological relations between spatial regions are proposed. Existent problems and future research...

The development of formal models of spatial relations is an important topic in spatial reasoning, geographic information systems (GIS) and computer vision, and has gained much attention from researchers during the recent years. In particular significant progress has been made in the models of topological relations between spatial regions. The primary research contents, methods and advancements of formal analysis for topological relations between spatial regions are proposed. Existent problems and future research directions are also discussed.

空间关系形式化模型的发展是空间推理、地理信息系统(geographic information systems,简称GIS)、计算机视觉等领域中的一个非常重要的主题,近年来受到相关领域研究者的极大关注,特别是在空间区域间拓扑关系模型的研究方面取得了很大进展.介绍了区域间拓扑关系形式化分析的主要研究内容、研究方法和研究进展,并探讨了目前存在的问题和今后的发展方向.

Different from the former focus on the neighbor region analysis of spatial objects, the purpose of the study is to locate and analyze the competitive region of weighted objects in the Euclidian R 2 space. A new form of weighted Voronoi diagrams named projective weighted Voronoi diagram (PWVD) is introduced to resolve this problem. Based on the model of spatial tessellation of ordinary voronoi diagram and weighted Voronoi diagram, a projective spatial tessellate model is presented, which can produce competitive...

Different from the former focus on the neighbor region analysis of spatial objects, the purpose of the study is to locate and analyze the competitive region of weighted objects in the Euclidian R 2 space. A new form of weighted Voronoi diagrams named projective weighted Voronoi diagram (PWVD) is introduced to resolve this problem. Based on the model of spatial tessellation of ordinary voronoi diagram and weighted Voronoi diagram, a projective spatial tessellate model is presented, which can produce competitive region in planar space. Thus the interspaces produced by the tessellation i.e. competitive triangles (CT), are examined. Next, three weighted methods: proportional, gravitational and Gaussian are applied to produce different CT respectively. The properties of the triangles and PWVD, such as the inclusion and overlap of CT and the intrusion, inter intrusion and neighbor region sharing of PWVD and CT are analyzed too. At last section, the creation algorithm of CT is discussed and the result of computer simulation shows that it is feasible to use the competitive triangles as the competitive region of the Euclidian R 2 space. From this study, it is concluded that the method might be widely used in future's GIS spatial analyses and practical applications.

在 GIS空间分析中 ,为了定位和分析空间区域中含权对象的竞争区域 ,提出了加权 Voronoi图的新形式——投影加权 Voronoi图 ,该图是从常规 Voronoi图和一般加权 Voronoi图的平面剖分模型出发 ,首先引入了能够产生空间竞争区域的空间投影剖分模型 ,然后由此形成空间中的三角形空隙 ,即竞争三角形 ,同时归纳了形成竞争三角形的 3种加权方式 ,并分析了其生成算法和特性 ,计算机的模拟结果显示 ,将竞争三角形作为空间的竞争区域是可行的 ,最后论述了它在 GIS空间分析中广泛的应用前景。

This paper considers that there is a gap between mountain altitudinal belts and the traditional GIS, and that a "bridge" should be constructed between them. A "digital engine" is created, which makes it possible to digitize mountain altitudinal belts. Based on the collection of a great amount of data and resource about mountain vertical belts and their standardization in China, this paper makes use of the component AO of ArcGIS and VB programming language to develop a mountain altitudinal belt information system...

This paper considers that there is a gap between mountain altitudinal belts and the traditional GIS, and that a "bridge" should be constructed between them. A "digital engine" is created, which makes it possible to digitize mountain altitudinal belts. Based on the collection of a great amount of data and resource about mountain vertical belts and their standardization in China, this paper makes use of the component AO of ArcGIS and VB programming language to develop a mountain altitudinal belt information system (1.0) for China. This system is object-oriented, and establishes the spatial connection between altitudinal belt spectra and geographical location, allowing the possibility for the digital analysis of vertical belts between multiple regions. The interface of this system is friendly, easy to operate. This information system provides physical geographers and ecologists with a perfect data collection of mountain altitudinal belts and an effective tool for spatial analysis of mountain altitudinal belts. Its successful development means that the study of mountain altitudinal belts has entered a digital era.

本文收集了大量翔实的山地垂直带资料,建立了我国山地垂直带数据库,创建了山地垂直带谱"数字引擎".使垂直带谱数字化成为可能。采用ArcObject组件开发技术及Visual Basic,自主开发中国山地垂直带信息系统(1.0)。该系统是一个面向对象(山地垂直带谱)的地理信息系统;以山地垂直带"数字引擎"为系统内核,在功能上实现了山地垂直带分布与地理空间区域的联接,同时实现了大范围内选择多个区域进行数据分析的功能。系统界面友好,易操作,显示直观、明了,为自然地理和生态学家者提供了一个比较丰富的山地垂直带谱数据集和有效的分析工具。标志着山地垂直带谱研究进入了数字时代。

 
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