The conceptual modeling elements and mutual relations between them are discussed and some key technical problems are identified in the development of feature based temporal - spatial data models.
讨论了基于特征的概念模型要素及相互关系；提出了基于特征的时空数据模型所面临的关键技术。
Using the climatic data recorded by the 90 weather stations in Guangxi in 30 years and geographic information of the stations, spatial analyzing models of division index are built.
利用广西90个气象台站30年的气候资料和台站地理信息，建立了区划指标的空间分析模型。
By analyzing the characteristics and requirements of E-government data management, the comprehensive data models of spatial decision-making for E-government is put forward.
本文通过对电子政务数据特点和处理要求的分析，提出了电子政务空间辅助决策综合数据模型。
This paper discusses the designed target, followed rules, data models and key points about spatial data exchange format which is based XML and will be used in electronic government.
本文讨论电子政务中基于XML的空间数据交换格式的设计目标、遵循原则、数据模型和矢量数据交换格式中的关键点。
Discuss the knowledge formalization method of river selection, two kinds of spatial knowledge data models are put forward and the rules of river selection are summed up.
分析了河系自动综合中的空间知识及其形式化方法，建立了组织河系空间知识的两种数据模型，总结了河流选取中的规则性知识。
These techniques will influence speed querying data. variables and models of spatial analyst for forest ecological system selecting. model level conversion and efficiency of spatial analyst.
这些方法将影响数据查询速度、森林生态系统空间分析变量和模型的选择、模型尺度转换及空间分析效率。
This thesis presents its application in spatial data mining and knowledge discovery, and focuses on the cloud models and their algorithms.
针对云理论在空间数据挖掘和知识发现中的应用，提出了基于半云和梯形云的空间距离概念的划分方法。
Based on data integration technique, direct transmittance models for different temporal and spatial scales were established and the accuracy of different models was analyzed thoroughly.
运用数据集群技术，建立了我国不同时空尺度直接透射率的估算模式，对比分析了不同模式的拟合精度。
Completely changing or largely modifying data model of current GISs and developing a lot of spatial process models which may have very narrow applications could not be accepted by the GIS vendors.
完全改变或较大修改数据模型，并开发大量的但可能只具有较窄的应用范围的时空分析模型不会被GIS开发者所接受。
In this paper, a new spatial-temporal data model based on state-event is presented, and the qualifications for conversion between spatial-temporal data models are analyzed.
本文提出了基于状态-事件的时空数据模型，并系统阐述各时空数据模型之间的相互转换条件。
In this paper, a new spatial-temporal data model based on state-event is presented, and the qualifications for conversion between spatial-temporal data models are analyzed.
本文提出了基于状态-事件的时空数据模型，并系统阐述各时空数据模型之间的相互转换条件。
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