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Graduate Theses & Dissertations

: Exploring Least Cost Path Analysis; Least cost path analysis is considered by many scholars as being a good proxy for studying movement and interactions between sites in the landscape. Although it is widely used, there are many limitations and challenges yet to be overcome concerning the reliability of the results. The examples used from the Göksu Valley during the late Roman Imperial rule emphasize the need to clearly understand how the tool works in generating least cost paths and how these can be interpreted and related to human movement. The resolution and accuracy of the elevation data used also play an important role in least cost path analysis and these depend on the topographical area being studied. New venues are constantly being sought and the success of any analysis depends on how the results are compared and tested in concert with data obtained from various sources and through more visually advanced mapping software. Author Keywords: GIS, Göksu Valley, Turkey, Late Roman period, Least cost path, Roads, Routes, Communication, Spatial analysis

: Digital Elevation Models and Viewshed Analysis; This thesis approaches the issue of Viewshed Analysis and how it can impact the understanding of a medieval environment. Centered on the High Medieval period of Cilicia, in what is today Southwestern Turkey, the precision of Viewsheds in a complex terrain is evaluated, and the role of the fortifications in the environment is expanded upon. The maps that were generated for this thesis demonstrate that the use of free datasets must be done with caution, and that the use of more than one dataset is crucial in trying to create a clearer picture of the environment. The examination of four separate sets of fortifications within the region leads to new questions about the role of fortifications in the region, as well as a better understanding of what groups such as the Armenian Cilicians and the Knights Templar were doing in the High Medieval period. Finally, conclusions are made regarding the future impact of GIS based studies, and how they can help scholars understand Ancient and Medieval landscapes. Author Keywords: Armenian Cilicia, Fortifications, GIS, Viewshed

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