Results 51 to 60 of about 1,078,281 (196)
Land, 2021 Rapid urbanization has led vertical infrastructural growth in different countries with differing economic development levels and social systems. The two cities, Prague and Delhi, are the capital cities of their respective countries and have significant ...
Tarun Ghawana +2 more
doaj +1 more source
Query processing of spatial objects: Complexity versus Redundancy [PDF]
, 1993 The management of complex spatial objects in applications, such as geography and cartography, imposes stringent new requirements on spatial database systems, in particular on efficient query processing. As shown before, the performance of spatial query
A. Braun +9 more
core +1 more source
Thematic Geovisualization of the Data Profile of Kaligesing, Purworejo, Central Java
Forum Geografi, 2019 The scientific field has a variety of purposes, one of which is the presentation of data and information which can be used by other parties to support their decision making. Moreover, the information is presented spatially.
Sudaryatno Sudaryatno +2 more
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Towards a Scalable Dynamic Spatial Database System [PDF]
, 2012 With the rise of GPS-enabled smartphones and other similar mobile devices, massive amounts of location data are available. However, no scalable solutions for soft real-time spatial queries on large sets of moving objects have yet emerged.
Diaconu, Raluca +2 more
core +3 more sources
Query processing of geometric objects with free form boundarie sin spatial databases [PDF]
, 1993 The increasing demand for the use of database systems as an integrating factor in CAD/CAM applications has necessitated the development of database systems with appropriate modelling and retrieval capabilities.
Fahldiek, Andreas +3 more
core +2 more sources
Evaluation of Topological Consistency in CityGML
ISPRS International Journal of Geo-Information, 2019 Boundary representation models are data models that represent the topology of a building or city model. This leads to an issue in combination with geometry, as the geometric model necessarily has an underlying topology.
Anna Giovanella +2 more
doaj +1 more source
Energies, 2021 The main objective of this work is to develop a methodology for analyzing the quality of the voltage level in the distribution power grid to identify and reduce the violations of voltage limits through the proposition of optimal points for the allocation
José A. G. Cararo +6 more
doaj +1 more source
Reliable Diversity-Based Spatial Crowdsourcing by Moving Workers
, 2015 With the rapid development of mobile devices and the crowdsourcig platforms, the spatial crowdsourcing has attracted much attention from the database community, specifically, spatial crowdsourcing refers to sending a location-based request to workers ...
Chen, Lei +6 more
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Normative Values for 18-30 Age Group of Benton Visual Retention Test Scores and Pre-morbid Intelligence Quotients: New Data Comparisons for Diagnosing Memory and Visual Spatial Deficits in Alzheimer's Disease and Stroke [PDF]
, 2011 The Benton Visual Retention Test (BVRT) is a well known test used to assess visual memory deficits and visual spatial abilities in patients. Normative data for the 18-30 age group is not presently covered thoroughly; hence, this study continues the work ...
Chinnery, H., Thompson, S. B. N.
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Linear separability in spatial databases [PDF]
Knowledge and Information Systems, 2017 Given two point sets $R$ and $B$ in the plane, with cardinalities $m$ and $n$, respectively, and each set stored in a separate R-tree, we present an algorithm to decide whether $R$ and $B$ are linearly separable. Our algorithm exploits the structure of the R-trees, loading into the main memory only relevant data, and runs in $O(m\log m + n\log n)$ time
Gutiérrez, Gilberto +2 more
openaire +2 more sources