ArcSDE作为空间数据引擎,在地理信息系统中有着广泛的应用,它能有效的提高空间数据库的管理效率。本文在对常用空间数据引擎比较的基础上,根据信息基础设施空间数据种类多、数据量大的特点,提出了基于ArcSDE+SQL Server 2000技术构建的...ArcSDE作为空间数据引擎,在地理信息系统中有着广泛的应用,它能有效的提高空间数据库的管理效率。本文在对常用空间数据引擎比较的基础上,根据信息基础设施空间数据种类多、数据量大的特点,提出了基于ArcSDE+SQL Server 2000技术构建的信息基础设施空间数据库建设方案,实现了海量数据的空间存储和有效管理,有利于信息的共享和充分利用,并在实际应用中取得了很好的效果。展开更多
Gave a brief introduction to the origin,concepted and hierarchical structure of Digital Mine.As a huge complex system,Digital Mine took data base and model base to- gether as a mine data management system being its co...Gave a brief introduction to the origin,concepted and hierarchical structure of Digital Mine.As a huge complex system,Digital Mine took data base and model base to- gether as a mine data management system being its core,and Digital Mine was com- prised of five subsystems including data obtaining system,integral dispatching system, applied engineering system,data processing system,and data management system.Be- ing a digitally 3D visualized representation and a spatial information infrastructure of an actual mine,Digital Mine had three basic features such as data warehouse,information reference and digital platform.The present developments of Digital Mine in mining industry, research and education were also introduced.Examples were shown for present Digital Mine construction in China.The development trends,the key technologies and the recent construction procedures on Digital Mine were presented.展开更多
Planning in advance to prepare for and respond to a natural hazard-induced disaster-related emergency is a key action that allows decision makers to mitigate unexpected impacts and potential damage. To further this ai...Planning in advance to prepare for and respond to a natural hazard-induced disaster-related emergency is a key action that allows decision makers to mitigate unexpected impacts and potential damage. To further this aim, a collaborative, modular, and information and communications technology-based Spatial Data Infrastructure(SDI)called SIRENE—Sistema Informativo per la Preparazione e la Risposta alle Emergenze(Information System for Emergency Preparedness and Response) is designed and implemented to access and share, over the Internet, relevant multisource and distributed geospatial data to support decision makers in reducing disaster risks. SIRENE flexibly searches and retrieves strategic information from local and/or remote repositories to cope with different emergency phases. The system collects, queries, and analyzes geographic information provided voluntarily by observers directly in the field(volunteered geographic information(VGI) reports) to identify potentially critical environmental conditions. SIRENE can visualize and cross-validate institutional and research-based data against VGI reports,as well as provide disaster managers with a decision support system able to suggest the mode and timing of intervention, before and in the aftermath of different types of emergencies, on the basis of the available information and in agreement with the laws in force at the national andregional levels. Testing installations of SIRENE have been deployed in 18 hilly or mountain municipalities(12 located in the Italian Central Alps of northern Italy, and six in the Umbria region of central Italy), which have been affected by natural hazard-induced disasters over the past years(landslides, debris flows, floods, and wildfire) and experienced significant social and economic losses.展开更多
In this paper, first we are going to discuss briefly the importance of 3D information, and its application because of the Increasing demand for detailed information about real world objects and phenomena including alt...In this paper, first we are going to discuss briefly the importance of 3D information, and its application because of the Increasing demand for detailed information about real world objects and phenomena including altimetry and planimetry data (X, Y, Z), then we will explain in short the available methods for 3D measurement. It’s important to note that the Information collection by itself cannot define and sufficiently provide all the necessary actions to be taken in order to get them accessible and useful for users. The data management and establishment of a proper and reliable DBMS and finally a GIS system at the same time are vital crucial in the course of 3D application that will be discussed throughout the paper. The existing drawbacks and elements needed to be considered for the cartographic presentation are the key issues in three-dimensional world visualization. The elaboration on the 3D information and its knowledge transfer to the users in a SDI framework as well as the requirement recognition of beneficiary organizations will be the next step in this paper and the most probable problems will be studied in this stage. At the final stage, we’ll come up with conclusion, warnings and recommendation.展开更多
Digital Earth is an interdisciplinary field involving space technology,information technology,and geoscience.This article introduces the land observation satellite system of China and discusses the requirements for sa...Digital Earth is an interdisciplinary field involving space technology,information technology,and geoscience.This article introduces the land observation satellite system of China and discusses the requirements for satellite payloads in terms of spatial,temporal,and spectral resolution to establish a Digital Earth.The applications of land satellites under the framework of Digital Earth are introduced from the perspectives of data support,special subject services,and integrated information services.It is concluded that China’s land observation satellites and ground processing systems will be fundamental components of the Digital Earth system,in which satellite data and their derived information will serve as the principal information source and greatly promote applications of Digital Earth.展开更多
With regard to a multi-dimensional and multi-facetted implementation of the vision of a Digital Earth,capabilities to combine and analyze heterogeneous spatial data sources on the web are becoming increasingly importa...With regard to a multi-dimensional and multi-facetted implementation of the vision of a Digital Earth,capabilities to combine and analyze heterogeneous spatial data sources on the web are becoming increasingly important.In this article,an online system is conceptualized and implemented to facilitate spatial data analysis and decision making specifically for environmental applications.It supports a dynamic search and binding of suitable geoprocessing functionality with respect to the given input data and target description.Geoprocessing patterns are used to create an application-oriented abstraction layer on top of generic geoprocessing services available on the web.As an application scenario the determination and quality assessment for water body structures is taken.For this use case authoritative data,remote sensing imagery and citizen science data gets combined to gain a comprehensive picture of the various spatial,temporal and thematic aspects influencing the quality of inland waters.The prototypical implementation makes use of open standards to facilitate the integration with existing spatial data infrastructures.展开更多
文摘ArcSDE作为空间数据引擎,在地理信息系统中有着广泛的应用,它能有效的提高空间数据库的管理效率。本文在对常用空间数据引擎比较的基础上,根据信息基础设施空间数据种类多、数据量大的特点,提出了基于ArcSDE+SQL Server 2000技术构建的信息基础设施空间数据库建设方案,实现了海量数据的空间存储和有效管理,有利于信息的共享和充分利用,并在实际应用中取得了很好的效果。
基金the National 863 High-Tech.Program of China(2006AA12Z2162007AA06Z108)the Natural Science Funds of China(50525414,40571137)
文摘Gave a brief introduction to the origin,concepted and hierarchical structure of Digital Mine.As a huge complex system,Digital Mine took data base and model base to- gether as a mine data management system being its core,and Digital Mine was com- prised of five subsystems including data obtaining system,integral dispatching system, applied engineering system,data processing system,and data management system.Be- ing a digitally 3D visualized representation and a spatial information infrastructure of an actual mine,Digital Mine had three basic features such as data warehouse,information reference and digital platform.The present developments of Digital Mine in mining industry, research and education were also introduced.Examples were shown for present Digital Mine construction in China.The development trends,the key technologies and the recent construction procedures on Digital Mine were presented.
基金SIMULATOR-Sistema Integrato ModULAre per la gesTione e prevenzi One dei Rischi-Integrated Modular System for Risk Prevention and Management, financed by the Lombardy regional government, Italy
文摘Planning in advance to prepare for and respond to a natural hazard-induced disaster-related emergency is a key action that allows decision makers to mitigate unexpected impacts and potential damage. To further this aim, a collaborative, modular, and information and communications technology-based Spatial Data Infrastructure(SDI)called SIRENE—Sistema Informativo per la Preparazione e la Risposta alle Emergenze(Information System for Emergency Preparedness and Response) is designed and implemented to access and share, over the Internet, relevant multisource and distributed geospatial data to support decision makers in reducing disaster risks. SIRENE flexibly searches and retrieves strategic information from local and/or remote repositories to cope with different emergency phases. The system collects, queries, and analyzes geographic information provided voluntarily by observers directly in the field(volunteered geographic information(VGI) reports) to identify potentially critical environmental conditions. SIRENE can visualize and cross-validate institutional and research-based data against VGI reports,as well as provide disaster managers with a decision support system able to suggest the mode and timing of intervention, before and in the aftermath of different types of emergencies, on the basis of the available information and in agreement with the laws in force at the national andregional levels. Testing installations of SIRENE have been deployed in 18 hilly or mountain municipalities(12 located in the Italian Central Alps of northern Italy, and six in the Umbria region of central Italy), which have been affected by natural hazard-induced disasters over the past years(landslides, debris flows, floods, and wildfire) and experienced significant social and economic losses.
文摘In this paper, first we are going to discuss briefly the importance of 3D information, and its application because of the Increasing demand for detailed information about real world objects and phenomena including altimetry and planimetry data (X, Y, Z), then we will explain in short the available methods for 3D measurement. It’s important to note that the Information collection by itself cannot define and sufficiently provide all the necessary actions to be taken in order to get them accessible and useful for users. The data management and establishment of a proper and reliable DBMS and finally a GIS system at the same time are vital crucial in the course of 3D application that will be discussed throughout the paper. The existing drawbacks and elements needed to be considered for the cartographic presentation are the key issues in three-dimensional world visualization. The elaboration on the 3D information and its knowledge transfer to the users in a SDI framework as well as the requirement recognition of beneficiary organizations will be the next step in this paper and the most probable problems will be studied in this stage. At the final stage, we’ll come up with conclusion, warnings and recommendation.
文摘Digital Earth is an interdisciplinary field involving space technology,information technology,and geoscience.This article introduces the land observation satellite system of China and discusses the requirements for satellite payloads in terms of spatial,temporal,and spectral resolution to establish a Digital Earth.The applications of land satellites under the framework of Digital Earth are introduced from the perspectives of data support,special subject services,and integrated information services.It is concluded that China’s land observation satellites and ground processing systems will be fundamental components of the Digital Earth system,in which satellite data and their derived information will serve as the principal information source and greatly promote applications of Digital Earth.
基金This work was supported by Bundesministerium für Bildung und Forschung[grant number 033W039A]EU[grant number 308513]European Social Fund[grant number 100270097].
文摘With regard to a multi-dimensional and multi-facetted implementation of the vision of a Digital Earth,capabilities to combine and analyze heterogeneous spatial data sources on the web are becoming increasingly important.In this article,an online system is conceptualized and implemented to facilitate spatial data analysis and decision making specifically for environmental applications.It supports a dynamic search and binding of suitable geoprocessing functionality with respect to the given input data and target description.Geoprocessing patterns are used to create an application-oriented abstraction layer on top of generic geoprocessing services available on the web.As an application scenario the determination and quality assessment for water body structures is taken.For this use case authoritative data,remote sensing imagery and citizen science data gets combined to gain a comprehensive picture of the various spatial,temporal and thematic aspects influencing the quality of inland waters.The prototypical implementation makes use of open standards to facilitate the integration with existing spatial data infrastructures.
