A serological survey of Brucella abortus in cattle originating from communal grazing areas of Kwa Zulu Natal was carried out between March 2001 and December 2003. The survey was designed as a 2-stage survey, considering the diptank as the primary sampling unit. In total 46 025 animals from 446 diptanks of 33 magisterial districts were sampled and tested using the Rose Bengal test and Complement...

This paper discusses an application of an intelligent information system for decision-makers involved in multiple criteria group site selection problems under uncertainty. The fuzzy algorithm behind the system was developed by the authors for use in large-scale infrastructure site selection, and is validated here using a site selection problem at Brisbane Airport. The ‘InfraPlanner’ Spatial Dec...

This supplemental material section contains detailed information on the input data assumptions for the SWAT modeling as well as the model calibration and validation results. The data sources listed in Supplemental Table 1 were used to build the SWAT TMDL modeling system for the Raccoon River watershed, most of which are accessible in the Iowa Department of Natural Resources (IDNR) on-line digit...

Mineral exploration companies increasingly are using GIS technology to combine spatial data and make predictive mineral potential maps. Weights-of-evidence is a discrete multivariate method first applied to this problem by us about 12 years ago (Bonham-Carter et al., 1988). It is easily implemented within a GIS computing environment. Arc-WofE is a new user-friendly computer code for weights-of-...

To demonstrate the capabilities of Geographic Information System (GIS) techniques and numerical modeling for groundwater resources development in arid areas, specifically for the demarcation of suitable sites for the artificial recharge of groundwater aquifers, a study was carried out in the Maknassy basin, which is located in Central Tunisia. Thematic maps were prepared using a Hydrogeological...

Terrestrial close range digital photogrammetric methods were used to obtain three-dimensional data on erosion gullies associated with waste rock dumps at Newmont Australia’s Jundee gold mining operations. Digital stereo pairs of photographs were taken at each site and three-dimensional images produced using the CSIRO software package SIRO3D. Difficulties associated with producing accurate three...

GIS is becoming an essential tool for utility companies, especially water companies, which have found an excellent way to manage and assess their assets. This paper presents an ArcView extension called AvEPA, which is a customized application oriented to the task of water network modeling. AvEPA is capable of simulating, analyzing and retrieving the actual network status under certain condition...

AGNPS, which is an agricultural non-point source pollution model, was used in combination with GIS tools to assess the feasibility of water quality effluent trading for phosphorus, in Morrow Lake sub-watershed, Kalamazoo, Michigan, USA. GIS software packages (Arc/Info and ArcView) were used to prepare data input for the model and post process the results. The sensitivity of AGNPS parameters was...

Digital elevation models (DEMs) are increasingly used for visual and mathematical analysis of topography, landscapes and landforms, as well as modeling of surface processes. A DEM of Cerro Sillajhuay, a volcano in the Andes of Chile/Bolivia, was developed from ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer) satellite data. The original 30-m DEM was generated by using tie ...

Taken 1:10000 Scale topographic map in the small watershed of Genxi River as an example, under the support of ARCVIEW and ARC/INFO software of GIS, through digitizing topographic map and other special maps to set up a spatial geodatabase. This paper forms a digital elevation model and has an analysis of slope and aspect, also discovered knowledge referenced for soil and water conservation. The ...