Results 191 to 200 of about 3,419,908 (255)

Temporal reasoning in geographical information systems

Proceedings 11th International Workshop on Database and Expert Systems Applications, 2002
We present a declarative approach to spatio-temporal analysis of geographical data. We introduce a logical language, MuTACLP+, providing a set of temporal primitive operators that allow the user to perform temporal reasoning on spatial data stored in a geographical information system (GIS).
RAFFAETA', Alessandra, RENSO C.
openaire   +2 more sources

An introduction to geographic information systems

Computers & Industrial Engineering, 1977
Abstract Geographic information systems are concerned with the organization, handling and retrieval of data whose spatial position or geographic pattern is of concern. This paper defines a geographic information system, explains some terms associated with geographical or spatial data, and discusses methods of organizing such data for flexible and ...
openaire   +1 more source

Geographic information systems in the U.S.

Proceedings of the November 16-18, 1971, fall joint computer conference on - AFIPS '71 (Fall), 1971
A Geographic Information System (GIS) can be defined as one which is oriented to supplying information pertaining to the geography or spatial relationships of the information in the system.
Robert Amsterdam, Edward Andresen, Harry Lipton   +2 more
openaire   +1 more source

Geographic information systems and cartography

Cartography, 1990
The GIS phenomenon shows no sign of weakening, but cannot last for ever. The paper addresses the long-term significance of GIS from three perspectives. First, the various application fields are reviewed and used to define four views of GIS. Second, the paper looks at some new and continuing debates in GIS and their significance for cartography.
openaire   +1 more source

Geographic Information Systems Grid

2005
GIS Grid (geographic information systems grid) is a combination of geographic information systems and grid technology. Existing non-standardized multi-sources and multi-scales data have a shortage of spatial information shared in either internal and external organizations or departments, especially in national or global applications.
Dan Feng 0001, Lingfang Zeng, Fang Wang 0001, Degang Liu, Fayong Zhang, Lingjun Qin, Qun Liu 0001   +6 more
openaire   +1 more source

Geographical information systems

2004
The chapter gives an introduction to Geographical Information Systems (GIS) with particular focus on their application within environmental management.
openaire   +3 more sources

Kriging: a method of interpolation for geographical information systems

International Journal of Geographical Information Science, 1990
M. Oliver, R. Webster
semanticscholar   +1 more source

Optimal site selection for upper reservoirs in pump-back systems, using geographical information systems and multicriteria analysis

, 2016
J. Capilla, J. Carrión, E. Alameda-Hernandez   +2 more
semanticscholar   +1 more source

Geographical Information Systems

1997
Geographically referenced data consist of any type of measurement or observation, whether analog or digital, which have a known distribution across the surface of the ground, and hence can be presented as a map. Data of this sort are fundamental to all phases of mineral exploration and involve geological, geophysical and geo-chemical data along with ...
openaire   +1 more source

Geographical information system

2016
Helena Cláudia da Cruz Albuquerque, Filomena Maria Cardoso Pedrosa Martins, Luís Manuel Tomás Galiza Cardoso   +2 more
openaire   +1 more source