Applied Geographic Studies 

About: Applied Geographic Studies is an academic journal. The journal publishes majorly in the area(s): Space (commercial competition) & Geographic information system. It has an ISSN identifier of 1083-3404. Over the lifetime, 34 publications have been published receiving 223 citations.

Environmental Assessment and Monitoring with ICAMS (Image Characterization and Modeling System) Using Multiscale Remote-Sensing Data

Abstract: With the rapid increase in spatial data, especially in the NASA-EOS (Earth Observing System) era, it is necessary to develop efficient and innovative tools to handle and analyze these data so that environmental conditions can be assessed and monitored. A main difficulty facing geographers and environmental scientists in environmental assessment and measurement is that spatial analytical tools are not easily accessible. We have recently developed a remote sensing/GIS software module called Image Characterization and Modeling System (ICAMS) to provide specialized spatial analytical tools for the measurement and characterization of satellite and other forms of spatial data. ICAMS runs on both the Intergraph-MGE and Arc/info UNIX and Windows-NT platforms. The main techniques in ICAMS include fractal measurement methods, variogram analysis, spatial autocorrelation statistics, textural measures, aggregation techniques, normalized difference vegetation index (NDVI), and delineation of land/water and vegetated/non-vegetated boundaries. In this paper, we demonstrate the main applications of ICAMS on the Intergraph-MGE platform using Landsat Thematic Mapper images from the city of Lake Charles, Louisiana. While the utilities of ICAMS' spatial measurement methods (e.g., fractal indices) in assessing environmental conditions remain to be researched, making the software available to a wider scientific community can permit the techniques in ICAMS to be evaluated and used for a diversity of applications. The findings from these various studies should lead to improved algorithms and more reliable models for environmental assessment and monitoring.

Spatial accuracy of the EPA's environmental hazards databases and their use in environmental equity analyses

Abstract: Many of the contemporary environmental problems are geographic problems of spatial disparities between the distribution, impact, enforcement, costs, and remediation of a host of environmental ills. In order to link environmental process and human uses of the environment, a spatially accurate database of environmental hazards is required. This article examines the positional accuracy of some of the most important Environmental Protection Agency databases. It presents a methodology for identifying and correcting the errors found in the EPA databases, with South Carolina used as an example. Results show that more than 50% of the facilities in the state were initially located in the wrong census block group. The importance of this research for policy making is demonstrated with the use of an environmental equity analyses of a particular facility in South Carolina. © 1997 John Wiley & Sons, Inc.

The Geographic Distribution of Nurse Practitioners in the United States

Abstract: This study analyzed the geographic distribution of nurse practitioners in the United States. Primary data on nurse practitioners were obtained from State Boards of Nursing and the District of Columbia in the spring of 1994. At the state level, nurse practitioners were more concentrated in urban areas than their physician counterparts. Of the 33,094 certified nurse practitioners, 85% were in metropolitan areas. Results from the dissimilarity indices between nurse practitioners and general populations showed that a greater supply of nurse practitioners in a state may not necessarily lead to an equitable distribution across counties. At both the state and county levels, the supply of nurse practitioners was positively associated with the supply of primary care physicians. Results from multivariate analyses show that nurse practitioners were more likely to locate in a county where state laws allowed independent practice. States that allow independent practice and direct third-party reimbursement will likely have greater availability and a larger supply of nurse practitioners in rural counties. © 1997 John Wiley & Sons, Inc.

Cost apportionment for a storm-water management system: Differential burdens on landowners from hydrologic and area-based approaches

Abstract: Communities deciding how to equitably distribute the cost of storm-water management systems need an understanding of how selection of a particular apportionment approach alters the cost distribution between various segments of the community. With the use of a geographic information system (GIS), differential impacts by apportionment approach were assessed for the Cuppy-McClure Watershed, Indiana, an area undergoing conversion from agricultural to residential and industrial uses. A per-acre charge approach is simple to construct and administer and gives a spatially uniform cost, but does not account for differential storm-water generation between different land uses. A single storm event runoff coefficient approach increases the cost load on land areas that generate more storm-water runoff from rare, extreme rainstorms, in particular, land uses with extensive impervious surfaces. For the single-storm approach, cost per unit area in the study area ranges from 25% below the per-acre charge level to 291% above the per-acre charge level. A long-term runoff impact approach increases the cost load on land uses that generate more runoff from the natural range of storm events for an area. It gives the greatest differential impact between land uses, ranging from 51% below the per-acre charge level to 484% above the per-acre charge level. Runoff-based approaches to fee apportionment shift financial burden to the landowners responsible for generating storm water runoff. Assigning fiscal responsibility on the basis of impact level encourages impact-minimization strategies, such as including hydrologic analyses in land-use decisions. Different spatial arrangements of the same land uses in a watershed can significantly alter the level of hydrologic impact, thus impact-based fee apportionment also encourages inclusion of spatial organization and environmental concerns in land-use planning. © 1998 John Wiley & Sons, Inc.