This paper describes the tools developed to link the SIBERIA model with a GIS. SIBERIA simulates the evolution of landforms within a catchment using digital elevation data. Integration of SIBERIA with a GIS provides easier access to the model for non-specialist users, and also extends model functionality. The complexity of the model means that integrating the two technologies using an ‘embedded...

Based on two models focussing on the analysis of the spatial components of the fishing effort distribution, we present a global approach which has been formalised in order to develop a computerized simulation tool called FAST (Fishing Activity Simulation Tool), distributed as an extension of ESRI ArcView GIS Software. FAST defines a logical framework under which the knowledge about fishing effo...

In some surveys, it is of interest to record geospatial data such as coordinates for housing unit locations, road networks, agricultural field boundaries, and water body boundaries as part of the survey data collection process. These data objects are represented as shape data (i.e., points, lines, polygons), and are inherently different from coded and fixed format questionnaire responses. Geogr...

The paper presents a GIS based spatial decision support system for modelling contaminant intrusion into water distribution system. Three models have been developed to simulate the process and risk of contamination. A seepage model predicts the contaminant zone of pollution sources and the change of concentration during migration through soil. A pipe condition assessment model ranks the conditio...

Preserving the functionality of digital objects (as opposed to just the bitstream), whether text, images, or scientific data, is a dauntingly complex task. The DSpace@Cambridge project, a joint project of Cambridge University Library and MIT Libraries, in partnership with Cambridge University Computing Service, has among its goals to further develop DSpace in the area of digital preservation. W...

This paper describes how a Geographical Information System (GIS)-based Decision Support System (DSS) was applied in selecting the most compatible block or compartment to construct a new forest road for a sustainable timber harvesting purposes. The study area was located in Gunong Stong Permanent Forest Reserve, Kelantan, Malaysia between latitude 500’ N and 525’ N and longitude 10120’ E and 102...

abstract a significant deficiency of most computer models used for stream floodplain analysis is that the locations of structures impacted by floodwaters, such as bridges, roads, and buildings, cannot be effectively compared to the floodplain location. this research presents a straightforward approach for processing output of the hec-ras hydraulic model, to enable two- and three dimensional flo...

Research has shown that impervious surfaces, a consequence of development, have a direct impact upon stream quality. Local planners and land-use officials need simple tools to help them determine the amount of impervious surface within watersheds and to assess impacts from future development. This paper describes an ArcView GISbased model being developed by the Northeast Regional Earth Science ...

This paper develops a spatio-temporaldata model to support activitybased transport demandmodelling in a GIS environment.This so-called mobilityoriented spatio-temporal data model conceptualizes the spatial and temporal interaction of travel and activity behaviour using the concept of mobility. In other words, activity patterns are conceptualizedas a sequence of staying at or travelling between ...

The increasing availability of very high spatial resolution data using the unit post code as its geo-reference is making possible new kinds of urban analysis and modelling. However, at this resolution the granularity of the data used to represent urban functions makes it difficult to apply traditional analytical and modelling methods. An alternative suggested here is to use kernel density estim...