The theme of this paper is the occurrence of risks within information technology and information systems investments. A taxonomy of the published classification frameworks of IT related risk is presented and a new comprehensive classification framework for IT investments (the TOPModel) is presented within the TRIP model of the risk factors and critical factors affecting IT investments. Risk man...

The integration of environmental models and Geographical Information Systems (GIS) usually takes two approaches: loose coupling and tight coupling. This paper, however, presents a full coupling approach within a GIS environment that is achieved by developing the existing hydrological models with the macro language of GIS. Such an approach makes it easy to capitalize on the GIS visualization and...

The development of novel interactive visualizations can substantially contribute to environmental modeling and understanding of complex environmental processes. To allow the Web Map Service (WMS) to support this, this paper explores a generic framework in which a dynamic environmental modeling process can be interactively visualized, controlled and tuned on the Internet by using Java 3D-based h...

An evaluation was conducted on three forested upland CT: An evaluation as t land watersheds in the northeastern U.S. to test the suitability of TOPn rtheastern U. t test the suitability of ­ MODEL for predicting water yield over a wide range of climatic L for predicting ater i ld er e tic scenarios. The analysis provides insight of the usefulness of TOPs. ­ MODEL as a predictive tool for future...

A rainfall–runoff (RR) model considering the spatial variation of rainfall, soil infiltration capability and soil storage capacity over a catchment and based on probability distribution functions, is used for rainfall–runoff modelling. The model combines infiltration excess (Horton) and saturation excess (Dunne) mechanisms. Moreover, it is applied to a data sparse catchment. Model parameters of...