As geospatial data grows explosively, needs for the incorporation of data mining techniques into Geographic Information Systems (GISs) are in great demand. Association rules mining is a core technique in data mining and is a solid candidate for the cause-effect analysis of large geospatial databases. It efficiently detects frequent asymmetric causal patterns in large databases. In this paper, w...

A police car, manned round the clock by two officers, costs at least $300,000 annually. With efficient management of this resource, police services can be improved without raising taxes. This ArcView extension allows police planners to design patrol districts and to evaluate them by displaying various performance measures. The extension uses a spatially distributed queuing system (the Larson Hy...

We review urban models useful in transportation planning, focusing especially on ones that are based on geographic information systems (GIS) software. We then describe UPlan, a simple model written by us in the ArcView GIS. Several different applications of UPlan are outlined, involving transportation planning and the analysis of the growthinducing effects of new facilitites, to demonstrate its...

This paper presents aspects of a research investigation into nutrient fluxes into and out of an important Irish estuary, Wexford Harbour, located in the southeast of Ireland. Details of the methodology applied, the data collection and analysis and the models used are outlined. In particular, the paper addresses modelling of chlorophyll_a production in the brackish waterbody and its dependency o...

Urban economics dictate that cities must grow to maintain their vitality. Small cities increase their population and economic base, thereby expanding their city limits. Large cities manage growth so that expansion is controlled, avoiding real estate and economic depressions. Former Albuquerque Mayor David Rusk argues in Cities Without Suburbs that cities with aggressive growth strategies prospe...

At present, no practical methodology exists for routine prediction of stream meander migration and uncertainty concerning the level of risk to infrastructure remains unacceptably high. This paper describes a Handbook that includes ArcView 3.2-based Bend Measurement and Channel Migration Predictor extensions, which provides a practical methodology to transportation engineers, floodplain managers...

A tool called GeoVR has been designed and developed under a client/server architecture to enable the interactive creation of a 3D scene and virtual reality modeling language (VRML) model from 2D spatial data by integrating Internet geographical information system (GIS) and HTML programming. The client front-end of this tool provides an HTML form to set properties for building 3D scenes, while t...