نتایج جستجو برای: geographic information systems gis
تعداد نتایج: 2172722 فیلتر نتایج به سال:
This paper presents GinisED – geo-information system which is developed to support control and management of electric low-power supply network. But introducing a GIS into a business process of utility company will not cause change to occur if it is viewed merely as a replacement for manually drawn circuit maps. Besides describing standard GIS tool, this paper discusses its transformation to ent...
In this paper, a change detection approach based on an object-based classification of remote sensing data is introduced. The approach classifies not single pixels but groups of pixels that represent already existing objects in a GIS database. The approach is based on a supervised maximum likelihood classification. The multispectral bands grouped by objects and very different measures that can b...
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What can geographic information systems (GIS) learn from “free/libré open source software” (FLOSS) computing? Surprisingly more than might appear at first blush. FLOSS depends upon sharing ideas, techniques, data, and applications to be successful, and GIS practitioners have always promoted sharing as benefiting GIS. It would appear that FLOSS and GIS have something in common. It seems reasonab...
A tsunami warning system based on active database system with satellite derived real-time data of tidal, significant wave height and ocean wind speed as well as assimilation data of sea level changes as one of the global risk management systems is proposed. Also, Geographic Information System (GIS) with free open source software of PostGIS is proposed for active database system. It may be said ...
This paper reviews the use of geographic information systems (GIS) software for spatial data processing in demography. The review begins with an introduction to GIS. Next, it traces the three major types of spatial data problems confronting demographers: the geocoding and geoprocessing of microdata, estimation of detailed population surfaces, and combining data aggregated to incompatible zone s...
Much attention has been devoted in the past to support classes of applications which are not well served by conventional database systems. Focusing on the application domain of geographic information systems (GIS), several architectural approaches have been proposed to implement commercial or prototype systems and satisfy the urgent needs for geographic data handling. However, those systems suf...
The implementation and development of effective mentoring is crucial to the growth and success of Geographic Information Systems (GIS) librarianship and staffi ng. Mentoring is necessary to fi ll the gaps for all staff members, especially students. I propose that mentoring can assuage many of the staffi ng obstacles to successful GIS programs. Effective mentoring will create a healthy and produ...
Using geographical information systems (GIS) has been of great interest lately. A lot of GIS applications are being introduced to regular and noncomputer-expert people through their everyday used machines such as cars (GPS), mobile (location systems), Internet (locating systems and direction guiders), and others. ”Google Earth,” a free online application, is one of those online geographical sys...
Geographic Information Systems (GIS) are widely used for analysing and visualizing georeferenced data. In the last few years, a new generation of Geographic Information Systems has emerged that extends the interactivity of dynamically generated maps, greatly enhancing visual exploratory data analysis ([1], [3], [6], [13]). While being an exciting development for automating cartography, these sy...
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