Results 271 to 280 of about 137,716 (306)
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2000
Spatial Databases cover a wide set of applications that handle spatial data, such as points, lines, and regions in multi-dimensional space. GISs are the most popular ones. GIS applications include cartography and network (such as road, telephone, or computer) mapping; apart from such applications, spatial data sets are of interest in the fields of ...
Yannis Manolopoulos +2 more
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Spatial Databases cover a wide set of applications that handle spatial data, such as points, lines, and regions in multi-dimensional space. GISs are the most popular ones. GIS applications include cartography and network (such as road, telephone, or computer) mapping; apart from such applications, spatial data sets are of interest in the fields of ...
Yannis Manolopoulos +2 more
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Accessing to spatial data in mobile environment
Proceedings of the Second International Conference on Web Information Systems Engineering, 2002We describe the data management principles on which data processing is based in an embedded navigation system. We study this management in the framework of a Web-based navigation and spatial data visualization. We use an Internet-based connection to download the data located on a distant data server and a Web browser interface to process and to ...
Arunas Stockus +3 more
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Spatial access structures for geometric databases
1992This paper surveys basic concepts of spatial access structures for geometric databases. We discuss the isolated plausibility arguments on which spatial access structure design decisions are traditionally based whenever efficiency is the primary goal, and we propose a more integrated view.
Hans-Werner Six, Peter Widmayer
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Efficient spatial access to a data base
Proceedings of the 1982 ACM SIGMOD international conference on Management of data - SIGMOD '82, 1982We present a file organization scheme providing fast access to spatially referenced objects in a data base. The method utilizes a geometric file structure based on extendible cells together with a so-called topological representation of areas. It is shown to have O(1) expected access cost for the "point-in-polygonnetwork-query" in typical situations ...
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Access and the Spatial Interactions of Tourists
2020While attractions drive tourism, access, or the ability of visitors to get to and travel within a destination, plays a key role in its success. If tourists cannot get to a destination, then they cannot experience the attractions therein. If they cannot move around the destination easily, their actions will be constrained. Moreover, if access is limited,
Bob McKercher, Bruce Prideaux
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Improving Remote Accessibility of Spatial Data
16th International Conference on Artificial Reality and Telexistence--Workshops (ICAT'06), 2006In recent years, many GIS applications have appeared on the Web giving users access to both spatial and non-spatial (attribute) data. However, a challenging task of Vector Active Map formats with such large volumes of online spatial data is that, in order to display them in most web browsers, either a plug-in has to be installed or an applet has to be ...
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Spatial Capacity of Multiple-Access Wireless Networks
IEEE Transactions on Information Theory, 2006We study the capacity of multiple-access networks both on uplink and downlink. In our model each user requires a given signal-to-interference-plus-noise ratio (SINR) and the capacity region is obtained as a solution of a power allocation problem. In this paper, we emphasize the differences between uplink and downlink.
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A new evacuation accessibility analysis approach based on spatial information
Reliability Engineering and System Safety, 2022Zhichen Liu
exaly
Access to urban parks: Comparing spatial accessibility measures using three GIS-based approaches
Computers, Environment and Urban Systems, 2021Siqin Wang, Mingshu Wang, Yan Liu
exaly
Accessibility and Spatial Interaction
The concept of accessibility is linked to the level of opportunities available for spatial interaction (flows of people, goods or information) between a set of locations, through a physical and/or digital transport infrastructure network. Accessibility has proved to be a crucial tool for understanding the framework of sustainability policy in light of ...openaire +1 more source