Service-oriented architecture supports data and model sharing and interoperability. The concept of such a service-oriented and distributed architecture is applied to build and integrate web-based service models of ecological resources quantitative measurement. The paper is to develop and integrate a GI web service by using an algorithm that calculates net primary productivity of terrestrial veg...

As a basic data structure in geometry, theoretical and computational aspects of Voronoi diagrams (VDs) and multiplicatively weighted Voronoi diagrams (MWVDs) have been widely researched and applied. But few algorithms are implemented in combination with geographic information system (GIS) softwares for practical use. A vector-based algorithm based on ArcGIS Engine (AE) is proposed to generate V...

BACKGROUND Myocardial infarction (MI) is a leading cause of mortality and morbidity in Iran. No spatial analysis of MI has been conducted to date. The present study was conducted to determine the pattern of MI incidence and to identify the associated factors in Iran by province. MATERIALS AND METHODS This study has two parts. One part is prospective and hospital-based, and the other part is a...

groundwater aquifers are an important source of water supply for agriculture, industry and drinking. the present study investigates the changes in the quality of groundwater using geostatistical methods in the ravar plain during a 10-year period. in this study, after selecting the appropriate spatial interpolation method to draw water quality parameters such as tds, sar and ec, zoning maps of r...

Over the past few decades GIS and statistical spatial data analysis tools have been successfully applied in the fields of meteorology, environmental monitoring, ecological analysis, and mineral exploration (to name but a few). While these synergistic tools operate on spatial data, as yet they have not been incorporated into a single 'user-friendly' software environment. For this reason statisti...

On both paper copies, the 300 dpi tiff is fully readable and the pdf raster looses lines and is.J-8747. ArcGIS Spatial Analyst: Advanced GIS Spatial Analysis. Using Raster and Vector Data. Page.This paper will describe the Mixed Raster Content MRC method for. This paper will develop the rationale for the MRC approach by describing the multi.The rotation of a digitized raster by an arbitrary ang...

Background: This research aims to measure and study spatial changes, and the reason behind the increasing nitrate content in water wells in the Central District of Khodabandeh County in the Zanjan Province. Methods: The nitrate and nitrite content, electrical conductivity, dissolved oxygen, temperature, total hardness and pH were measured at 40 sampling stations in the study area. The obtained...