The revised universal soil loss equation (RUSLE), the sediment delivery distributed (SEDD) model, and ArcView GIS were used to estimate the impacts of no-till practice on soil erosion and sediment yield in Pataha Creek Watershed, a typical dryland agricultural watershed in southeastern Washington. The results showed that the average cell soil loss decreased from 11.09 to 3.10 t/ha yr for the wh...

Abstract: Multi-modal and heterogeneous logic reasoning is of increasing importance within the AI community. The GIS based ArcView COA Sketcher (ArCS) sketch and translation tool developed under DARPA’s High Performance Knowledge Bases program is an example of an enabling tool towards that goal. Army Course of Action (COA) sketches can be drawn and translated automatically into statements in a ...

In order to fully analyze spatial data, from satellite images to precision agricultural data, the user needs to do these three things: (1) display spatial locations and concomitant geographic variables on maps, (2) visualize these concomitant variables using more general interactive multivariate visualization methods, and (3) execute statistical analyses. At present, in order to accomplish thos...

In this research, MCDM methods have been integrated with a GIS to provide the means to prioritise branch closure procedures based upon a variety of different choice criteria and on the importance (weight) a decision maker might attach to these. Both MCDM and GIS are well established methods and fields of research. Their integration, however, seems at best an emerging field. This paper describes...

Simulation models are powerful tools in support of watershed analysis and assessment of management scenarios at the watershed scale. This paper integrates geographic information systems (GIS) and agricultural nonpoint source pollution model (AGNPS) to analyze the effect of land use change on nonpoint source pollution in a study watershed. ArcView nonpoint source pollution modeling (AVNPSM), an ...

O objetivo desta pesquisa foi analisar as ilhas de calor na cidade Salvador nos bairros do Cabula e Pernambués ambos localizados no miolo urbano da cidade. Foram discutidos a relevância dos fatores geográficos localização, altitude, influência sistemas brisas marítimas continentais, assim como o efeito aquecimento das superfícies devido ao uso solo urbano. Foi utilizada concepção teórico-metodo...

Accessibility indices which measure the relative `nearness' or `propinquity' of geographic locations, one to another, are not well-developed functions in proprietary geographic information systems (GIS), notwithstanding their evident usefulness for urban analysis. In this paper, we develop procedures for embedding such measures within desktop GIS, focusing on the measurement of geometric access...

The progress of technology has made the measurement of air quality and the simulation of complex air pollution models both feasible and cost-effective. However, there is a long way to go in terms of facilitating widespread access to the data and models, and linking the monitoring of trace gases with specific urban activities and land use that might be controllable. As part of a NASA-funded proj...

This research aims to apply the spatial analysis optimize placement of firefighting units in area South Jakarta. The calculation and pre-analysis shown that there are some uncovered service areas at Therefore, recalculation help find out strategic new possible location for fire station. Optimalization station is conducted by calculating minimum time travel from point point. Other than that, als...

BACKGROUND Location is often an important component of exposure assessment, and positional errors in geocoding may result in exposure misclassification. In rural areas, successful geocoding to a street address is limited by rural route boxes. Communities have assigned physical street addresses to rural route boxes as part of E911 readdressing projects for improved emergency response. Our study ...