نتایج جستجو برای: geographical information systems

تعداد نتایج: 2151312  

2004
J. David Rogers Ronaldo Luna

Over the last four decades Geographical Information Systems (GIS) have emerged as the predominant medium for graphic representation of geospatial data, including geotechnical, geologic and hydrologic information routinely used by geotechnical and geoenvironmental engineers. GIS allow unlimited forms of spatial data to be co-mingled, weighted and sorted with any number of physical or environment...

2006
Eun-Ha Song Sung-Kook Han Laurence T. Yang Minyi Guo Young-Sik Jeong

Recently, the demands on information services have been increasing significantly. This is mainly due to the popularization of computer and mobile telecommunication devices and the rapid improvements on wireless communication technology. Specially, information services and their corresponding management for mobile devices, such as Location Based Service (LBS) and Telematics, become more and more...

2000
James B. Pick W. James Hettrick Nanda K. Viswanathan Elliott Ellsworth

This paper presents a new design for a census-based binational geographic information system. GIS has had limited application intra-censally i.e. between nations. The reasons are the formidable obstacles of standardization of attributes, matching of meaning of attributes, consistency of data-bases, and consistency of boundary files. Many problems in public administration can be solved by using ...

2001
Håvard Tveite

The purpose of a high level data model is to model a certain selection of real world phenomena as accurately, convincingly and completely as necessary and possible using various structuring and abstraction mechanisms and techniques. Geographical information is special because geographical location and spatial extent provides implicit spatial relationships between all geographically located phen...

Journal: :Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association 2005
Mark S MacGregor Jillian Campbell Marion Bain Chris G Isles Keith Simpson

Using geographical information systems to plan dialysis facility provision Sir, We read Toubiana et al.s' article on geographical information systems (GIS) with interest [1]. They suggest that GIS may be used to plan healthcare delivery, and we can confirm that. In Scotland, the government provides funding for universal healthcare to 15 National Health Service (NHS) Boards, with the level of fu...

2008
Yan Liu

ion levels, 4, 7Accelerating factors for development, 80, 81;See also TransportationAction-at-a-distance neighbourhood, 41–42Agent-based models, 17, 18–19Aggregationdiffusion-limited (DLA), 17–18spatial data, 22Aggregative approach, modelling, 11Agricultural location, Von Thünen model, 4, 7,8, 11Analogue models, 4Analytical capabilities, 20Ana...

2004
P. C. Kikiras D. Drakoulis

Precision farming is a management process, that involves the development and adaptation of knowledge – based technical management systems with the main goal of optimizing profit. Precision farming can be best understood as a cyclic optimization process, with control elements that measure both quantity and quality. This paper focuses on the GPS, the European Galileo and especially the methods us...

2006
Marco PAINHO Ignacio JOVANI Paula CURVELO

This paper addresses the process leading to curriculum revision in post-graduate studies of GIS&Sc within the ISEGI-UNL. The project aims to determine an e-learning curriculum proposal, able to provide an answer to a set of challenges of different nature. The proposed framework suggests the need to consider the current process of curricular revision according to: the major reforms taking place ...

2012
Nicola T. Shaw

This paper provides an introduction to Geographical Information Systems (GIS) and how they can be used. It reviews the current state of GIS use in health care before identifying the barriers to more pervasive use of GIS in health. Finally, it makes recommendations for the direction of health GIS research over the next decade and concludes with a call to action to health informatics researchers ...

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