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Student Work

Theses/Dissertations

2002

Geographic information science

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Acculturation And Geographic Mobility: The Sudanese Refugees In Omaha, Nebraska, Shelby Lynn Sack May 2002

Acculturation And Geographic Mobility: The Sudanese Refugees In Omaha, Nebraska, Shelby Lynn Sack

Student Work

Geographic mobility, defined simply as an individual’s ability to move from point A to point B, is a significant element in an individual’s process of adaptation - possibly affecting an individual’s social mobility. With more than 2,000 Sudanese refugees who have settled in Omaha, Nebraska, in the last few years, this study set out to identify the dominant cultural and situational factors that affect the mobility of this population. This thesis research incorporated both qualitative and quantitative techniques into the methodological design. Semistructured interviews were conducted to collect the data, which was then utilized to create activity space maps. Though …


Anisotropic-Reflectance Correction Of Multispectral Satellite Imagery In Complex Mountain Terrain, Stephen B. Cacioppo May 2002

Anisotropic-Reflectance Correction Of Multispectral Satellite Imagery In Complex Mountain Terrain, Stephen B. Cacioppo

Student Work

The utilization of satellite imagery acquired over rugged terrain is problematic because of anisotropic reflectance. A variety of environmental factors, such as the atmosphere and the topography, cause significant variation in the irradiant and radiant flux. Consequently, satellite imagery must be radiometric ally corrected to account for these variations which influence the at-satellite spectral response. In mountain terrain, the topographic effect is very pronounced, and satellite imagery must be normalized utilizing various techniques. The purpose of this research was to evaluate various implementations of the Minnaert correction technique which were designed to account for the influence of topography and land …