GIS is becoming an essential tool for utility companies, especially water companies, which have found an excellent way to manage and assess their assets. This paper presents an ArcView extension called AvEPA, which is a customized application oriented to the task of water network modeling. AvEPA is capable of simulating, analyzing and retrieving the actual network status under certain condition...

An increasing number of institutions are challenged with implementing robust geographic information system (GIS) capabilities for a large number of individuals through informationsharing and interconnected networks. In the past, numerous technological roadblocks hampered the successful implementation of enterprise GIS (EGIS). With the advent of high-speed networks; increasingly fast computers; ...

degradation of zagros forests has been continuing since a long time ago because of traditional and often improper exploitations due to poverty, unemployment, and livelihood. in this study, in order to reduce forest degradation and improve sustainability, the feasibility of multipurpose using of zagros forest was assessed in baneh forests by using gis, rs and ahp. all of the possible land-uses a...

An important issue in implementation of a GIS system is preparation of data to be entered in GIS. To produce spatial data for GIS using photogrammetric techniques, conventional method is to apply photogrammetric and GIS systems individually (off-line procedure). This approach is costly, time consuming and somehow unreliable due to the fact that 3D photogrammetric model is not available at the ...

The volume of spatial data available on the Web has been increasing rapidly. Currently, the Web has been used not only for document searching but also for the provision and use of services, known as Web services, which are published in a directory and may be automatically discovered by software agents. Particularly in the spatial domain, the possibility of accessing these large spatial datasets...