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Nowadays Big Data are becoming a popular topic and a comparatively new technological concept focused on many different disciplines like environmental science, social media and networks, industry and healthcare. Data volumes are on an upward trajectory associated with increased data velocity, and variety. Furthermore, they are needed to develop effective solutions to support intelligent, proactive...
Grid is a homogeneous or heterogeneous environment of resources. Grid scheduling is a technique by which resources are efficiently utilized to meet user demands. On the user perspective minimization of job turnaround time is the main challenge. Most of the minimization algorithms are implemented in homogeneous resource environment. In this paper a scheduling algorithm is presented to minimize average...
The traditional methods for urban management cannot satisfy the demand of modern urban management. To this end, lots of national governments are actively looking for solutions; a new model-Gridding Urban Management Model (GUMM) has been put forword. The paper studies theory and technological base of the urban gridding management. As HanDan city for example introduce the overall architecture and work...
Grid Information Service (GIS) is an entity that gathers the latest information about the grid resources. These resources information are then retrieved by the grid users or brokers prior to planning task deployment in a grid environment. Hence, the GIS frequently communicate with the resources for their latest status, and hardware and software specifications. This creates the need for timely and...
The last decade has been a substantial increase in commodity desktop and distributed Geographic Information System applications with client-server or browser-server architectures, mainly as a result of faster hardware and network performance. Nevertheless, there are still problems, in the field of GIS applications, which can not be effectively cooperative used due to the complicated geospatial data...
An integrated strategy coupling GIS with two-dimension hydrodynamic model is explored to simulate the flooding inundation in the upper reaches of Huangpu River. DEM data, hydraulic engineering map and other available geospatial data are used and aid to generate the computational grid, while, some treatments of interior and exterior boundary conditions, and calculations of variable resistance terms...
Earth Observation (EO) is an effective way to monitor hazards for rapid response. The sensors such as optical, passive microwave, Synthetic Aperture Radar (SAR) can be used. For rapid response purpose based on EO data, fast data acquisition from data provides and processing in near real-time are two key issues. In this paper, the automatic data integration method based on metadata harvest interface...
This paper mainly highlights the technical challenges addressed while deploying an end user specific real time Geospatial collaborative system on the top of GARUDA Grid. The grid simulation results has been gathered in a automated mode from the computing clusters of the Grid and the results of equal time stamp have been merged by a centralized image processing unit which has been connected to a `Master...
A new methodology of distributed mobile geographic information system (GIS) grid model is studied based on mobile agent and grid computing environment. Key technologies are presented in the model, including mobile agent (MA) distributed computing, grid computing, mobile GIS, global positioning system (GPS), transfer control protocol/internet protocol (TCP/IP), and user datagram protocol (UDP). In...
The development of earth observation technology has changed the way to obtain eco-environmental information. Through remote sensing images, we can access to various kinds of environmental information about large areas dynamic and rapidly. However, with the expansion of eco-environmental information, the data itself has become the bottleneck for its further use because of its massive and closed nature,...
K-neighbor search algorithm is an important class of query type in the spatial database, a new K-neighbor search algorithm based on variable incremental dynamic grid division is proposed in this paper, which is under the analysis of the traditional K-neighbor search algorithm based on dynamic grid division, this algorithm will carry on clustering to the data objects around the queried data object,...
The Interactive Graphical Ocean Database System (IGODS) is a complete software solution to support studies of ocean, coastal, and inland waters using profiling instrumentation such as a conductivity-temperature-depth (CTD) instrument. If you routinely conduct surveys where you are profiling at a set of geographic locations, collecting CTD profiles, and perhaps also collecting water samples for additional...
The management of the magnanimous spatial data needs the distributed cooperative GIS platform. This paper proposed the Peer To Peer and Cooperating Computing Hybrid Discovering Model of Distributed Geospatial Information. Based on the (Spatial Resource Discovery Agent (SRDA) and ordinary neighbor node, Combined with Spatial data model of MAPGIS7.0, this article brings up the geographic structure query...
K neighbor search algorithm has a very wide application in complex surface of a large amount of data, aiming at the broad and irregular nature of mass data, this paper will use QR-tree index structure, in accordance with full octree encoding method to code each node, in accordance with the location relationship to establish grid, and nodes intersecting with horizontal and vertical lines are also involved...
This article focuses on the meaning and initial implementation of Eclipse RCP technology in Grid GIS system . First it introduces the basic concepts of Eclipse RCP technology, focusing on the significance of the combining of technology and GridGIS system.Then it combines with the author's research currently doing on the GridGIS project, and makes a detailed description of Eclipse RCP technology in...
Mapping of vector and DEM is one of main methods for ascertaining spatial object locations in 3D dimension space. What's more, mapping technology has been widely used in the analysis and management of virtual landscape. Various methods of mapping vector data and DEM on the plane have been approached. However, when those methods are used for mapping global-scale vector data set and DEM model, they...
Adjacent searching is the basis of spatial operations, and has become one of the key problems in the discrete global grid query & calculations. But the existing adjacent searching algorithm of Degenerate Quadtree Grid (DQG) on spherical facet can only find neighbor cells around a target cell rather than the cells along a given direction. In order to overcome this deficiency, a directional searching...
In this paper, we have proposed a new Image-based Multi-scale Subdivisional Expression Model (IMSEM) based on Global Subdivision Gird (GSG). It creates a new approach that enables the common man using image itself to express geographic objects, rather than overlying a vector layer. To demonstrate this approach, the Geosubdivision System has been developed which shows that the IMSEM can express geographic...
There are many researches and applications about the Labeling for Electronic Map. Algorithmic efficiency is a problem which has came to front and need to be resolved in application. In this paper, a new algorithm for dynamic labeling which is based on the ideological raster grid is put forward. The algorithm first divides the screen into many raster grids, then labels of points, lines and polygons...
Nowadays, GIS software is entering a new era of Grid GIS. Represented by Grid GIS, the next generation GIS has become the frontline and hot issue in both the academic community and the industrial sector. However, implementing Grid GIS is confronted with a great deal of challenges, among which Grid-based geospatial computational task processing is the key issue. This paper proposes a new conceptual...
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