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The GIS applications require the attributes of semantic, space and time data. Spatial data describe the shape, size, location. Temporal data record the time of creation, loss of the space object and history of the changes are stored in the database. The modeling stage is very important first step to build a database of space-time in a GIS application. There have been many models of the authors have...
The three-dimensional visual geographic information system (GIS) based on Three-dimensional simulation 3S technology and the technical means, through the all-digital model of the factory, plant, equipment and piping systems and the surrounding environment of, to achieve a three-dimensional scene roaming in factory, showing the factory real scenes and meet the information needs of management and needs...
In this paper, we focused on the application of information technology in coastal construction in order to find better solutions to solve those problems in it. By using the related methods of information technologies including Computer Technique, Geographic Information System and Remote Sensing, we first completed the classification, analysis and processing of geological data which are involved in...
With the development of Web 2.0 and the expansion of Virtual Reality technology's application, the technical standard of 3D Virtual Graphics based on the XML (Extensible Markup Language)-X3D was proposed by Web 3D Alliance. It is proposed the feasible model of Virtual Reality Geographic Information System which based on Browser/Service structure, through a large number of researches on the current...
By using the Geographic Information System (GIS) technology, it is proposed to construct a virtual stope model method, which can reflect mine engineering development status and satisfy geometry restraint relationship, for the technical works, such as the exploitation design, the establishment of production plans and production management in strip mines. With the utilization of the based time series...
Real estate early warning system must be established rightly in the condition of rapid expanding for real estate market. This paper introduces how to construct real estate real estate information release platform, which is based on system architecture of ArcGIS server, a distributed WebGIS application development kit. Mechanism of geospatial data sharing is focused on web services, which is based...
With the technology of Geographic Information System (GIS) as the core and for the goal of establishing the spatio-temporal database of an open pit stope, the process of the strip mine production planning including shelling excavating and casting can be considered as the changed process of 3D geographic-spatial information based on time series, by establishing the spatio-temporal database of stopes,...
The Marine Oil Spill Response Information System, which serves as a decision support system designed to effectively response to the marine oil spill accidents, has been developed through the integration of a series of numerical models with the Geographic Information System (GIS). In the system, the three dimensional hydrodynamic model, oil spill trajectory and fate models are embedded in GIS. The...
Because of the absolute superiority in space and time complexity, 2D data model is used widely in the GIS industry, and has become the main model of GIS data storage. Now, the real-time 3D visual modeling based on two-dimensional GIS data has become the focus of attention. However, the traditional model of three-dimensional visualization based on two-dimensional GIS data has many problems such as...
The paper integrated the geographical information system with cellular automata (CA) and made use of VB and ArcGIS as development tools to design and implement the system of forest fire spread in Inner Mongolia Region. It realized the simulation of the 2D forest fire spread based on CA and visualization of the 3D realtime images transmitted from the fire site. In the 2D simulation process, combing...
The disposal, modeling and visualization of 3D data are very important in the construction of digital earth. Now, one can get fine 3D model with software such as 3DMax and so on. But the 3D system is only perfect in visualization without any function of spatial analysis. The predominant software of GIS, for example, ArcGIS, or IMAGIS, provides ideal function of spatial analysis. One also can establish...
The problems on how to make full use of the existing network resources should be resolved as soon as possible. By achieving this goal, the geographic information can be shared on the Internet. Also, social management, social standards and the quality of life could be enhanced. Moreover, the management of social and people's lives will change in the remote manner. The main issue is to build a geographic...
The information about 3D moving geographic objects are changed with the location and time, including the real-time geographic information. More and more people concern the technology of that how to collect, model, store, query, analyze and process spatiotemporal information. This paper proposes a new visualization method based on the improved MOST model, collision detection and terrain matching. The...
Web GIS is experiencing the development from 2D system to 3D system, and the Web GIS based on VRML is the most popular form of the 3D Web GIS. By analyzing the existing Web GIS system based on VRML, this paper points out its disadvantages and introduces the next generation standard for Web3D - X3D(Extensible 3D specification). A Web GIS model based on X3D is also put forward, which has its own advantages...
Digital Earth (DE) is a virtual presentation of the planet based on geographic coordinate, and is an information system with tremendous amount of multiple resolutions and multiple scales data as shown in multiple dimensions. It can visualize the real earth and represent historical phenomena in digital way by using the large amount of data of the earth, and utilizing the computer techniques, image...
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