This paper elucidates the manner in which users of an online decision support system respond to spatially distributed data when assessing the solution to environmental risks, specifically, nuclear waste disposal. It presents tests for revealing whether users are responding to geographical data...

In June 1999, the government of Ghana launched a new National Land Policy document that sought to address some fundamental problems associated with land administration and management in the country. One proposed solution was the adoption of computer-aided information systems in the ‘lands...

In this paper we describe the development of Internet-based approaches to public participation and on-line spatial decision support systems in particular. Two case studies in developing web-based public participation GIS (PPGIS), one local and one regional, are described in detail. Results from...