Fuzzy theory provides a rigorous, flexible approach to the problem of defining and computing. Therefore, to facilitate decision-making in geographic information system (GIS), the graph layer indicator and the Takagi Sugeno (TS) fuzzy model have to be integrated. This study explains several versions of the TS fuzzy model based on fuzzy theory and fuzzy operation. An inference model is constructe...

The main objective of integrating Web GIS in airport emergency response should be to provide the most appropriate geospatial information to all participants. Airport emergency response still needs a model that will explain its complexity: its participants, their tasks and information needs. This paper presents the UML model of airport emergency response. Such a model facilitates a common unders...

A 3D hydrodynamic/pollutant transport model was used to simulate the currents and pollutant transport in coastal areas. The bathymetric and shoreline data was provided to the model via a GIS module that operates in the ArcView GIS environment. The module is efficient and capable of generating bathymetric rectangular grids and shorelines of different resolution for open and closed boundary scena...

Agent-based modeling (ABM) is quickly becoming a choice tool for researchers, as it is very adept at modeling natural phenomena. Spatial data has the ability to further increase the usefulness of an ABM. One way that this can be achieved is through the inclusion of geographical information system (GIS) data. Such integration between ABM and GIS may sound trivial, but it is difficult to do effec...

This paper tackles the problem of robust change detection in image sequences from static cameras. Motion cues are detected using frame differencing with an adaptive background estimation modelled by a mixture of Gaussians. Illumination invariance and elimination or detection of shadows is achieved by using a colour chromaticity representation of the image data. The combination of the colourand ...

One of the major obstacles for the mobile GIS development is the immature in database design. For this consideration, a new mobile data model based on a mobile view of spatio-temporal and attribute model is proposed. A temporal database is designed in physicality for the implementation on conceptual model. It is a proactive approach continuously updating the related spatiotemporal and attribute...

Assessing fish habitat suitability in a data-scarce tidal river is often challenging due to the absence of continuous water quantity and quality records. This study comprised an intensive field on 42 km reach which recorded bathymetry physical parameters (pH, electroconductivity, dissolved oxygen, total solids) testing corresponding levels velocity. Frequent sampling was carried out 17 90 locat...

The term "Grid" has become common parlance among parallel and distributed computer scientists to denote a middleware infrastructure for wide-area scientific and engineering computing. Information services are a vital part of any Grid software infrastructure, providing fundamental mechanisms for discovery and monitoring and thus for planning and adapting application behavior. Grid Information Se...

The concept of the GIS as a centralized enterprise asset rather than a cartographic tool is gaining acceptance. Enterprise GIS takes an organizational approach for sharing and managing spatial information. At Otay Water District, we are integrating the departmental projects and data into a centralized GIS. A series of interviews was conducted within the District to make sure the new GIS system ...