Index Catalog // ScholarsArchive@OSU

Identification of irrigation practices using photographic and optical-mechanical scanning remote sensing techniques

Creator:: Naim, Shamim
Abstract:: Irrigation is essential for profitable agriculture in the western United States. It is the largest consumer of water and power in Oregon. Conflicting uses of water and power and their scarcity demands judicious planning for allocation of these resources. Creditable baseline data are not only needed for irrigated crop acreages,...
Resource Type:: Dissertation

Determination of geographic information system database characteristics : an application of the information integration theory

Creator:: Brooks, Kris
Abstract:: The development of a geographic information system (GIS) requires the development of large databases of spatially related information. Scale, resolution and the classification of thematic data can vary considerably in terms of the level of detail at which the data are compiled and converted to machine readable form. The level...
Resource Type:: Dissertation

Aspen age structure and stand conditions on elk winter range in the northern Yellowstone ecosystem

Creator:: Larsen, Eric J.
Abstract:: Aerial photographs and field sampling were used to compare aspen (Populus tremuloides) age structure and stand conditions on elk winter range in the northern Yellowstone ecosystem. The elk winter ranges studied were the northern range in Yellowstone National Park (YNP) and the Gallatin National Forest and the Sunlight/Crandall elk winter...
Resource Type:: Dissertation

Relationships between grass canopy characteristics and Landsat Thematic Mapper bands

Creator:: Ripple, William J.
Abstract:: The relationships between spectral reflectance in the Landsat Thematic Mapper (TM) bands and grass canopy variables were evaluated using in situ remote sensing techniques. Reflectance data were collected from experimental plots of annual ryegrass (Lolium multiflorum) and tall fescue (Festuca arundinacea) using a Barnes Modular Multiband Radiometer (MMR). The canopy...
Resource Type:: Dissertation

Effects of scale properties on biodiversity mapping in Oregon

Creator:: Kennelly, Patrick J., (Patrick Joseph)
Abstract:: The effect of scale is an important concern in mapping of biodiversity. Scale issues include the grid cell size used for analysis and the effect of the extent and internal boundaries. Because biodiversity analysis involves combinatorial processes, determining the proper scale is data dependent and cannot be predicted from the...
Resource Type:: Dissertation

The application of spatial data analysis and visualization in the development of landscape indicators to assess stream conditions

Creator:: Buckley, Aileen R.
Abstract:: The main theme of this research is the application of geographic techniques in a study involving environmental monitoring and analysis of the associations between landscape and in-stream characteristics in the Pacific Northwest. The geographic techniques used in this study include (1) geographic information systems (GIS) coupled with statistical analysis and...
Resource Type:: Dissertation

Land cover change along the Willamette River, Oregon

Creator:: Oetter, Doug Rudolph, 1962-
Abstract:: The Willamette River and its floodplain in northwest Oregon have changed dramatically since European settlement. At one time, the river was a vast complex system of braided channels with a broad floodplain forest; it has now been simplified by channelization and dams, and the forest has been removed to support...
Resource Type:: Dissertation

A per-segment approach to improving aspen mapping from remote sensing imagery and its implications at different scales

Creator:: Heyman, Ofer
Abstract:: A per-segment classification system was developed to map aspen (Populus tremuloides) stands on Winter Ridge in central Oregon from remote sensing imagery. A 1-meter color infrared (CIR) image was segmented based on its hue and saturation values to generate aspen "candidates", which were then classified to show aspen coverage according...
Resource Type:: Dissertation

The effects of land use changes on forest fires in major islands of Indonesia

Creator:: Lumban-Tobing, Pago L.
Abstract:: The study examines the effect of forest clearance on fire occurrences in major islands of Indonesia, namely: Borneo, Sumatra, Sulawesi and Irian Jaya. The working hypothesis of the study is that forest clearing is a necessary predecessor for extensive fires to occur. The study is designed to test the idea...
Resource Type:: Dissertation

Practitioner’s hands and academic eyes : a practical approach to improving disaster preparedness and response

Creator:: Thompson, Wiley C.
Abstract:: This dissertation primarily uses observations made during the 2005 Kashmir earthquake relief effort and available disaster literature to address problems that impede effective and efficient disaster preparedness and response. Three manuscripts form the body of the dissertation. The manuscripts are thematically linked through the Emergency Management Cycle. Each manuscript examines...
Resource Type:: Dissertation

The visualization of perspective systems and iconology in Dürer’s cartographic works : an in-depth analysis using multiple methodological approaches

Creator:: Wörz, Adèle Lorraine
Abstract:: This dissertation uses a new methodological approach for an in-depth analysis of three cartographic works. Studies within the discipline of the history of cartography have followed various methodologies throughout the past century. This dissertation argues that in order to come to a more complete understanding of how maps were produced...
Resource Type:: Dissertation

ScholarsArchive@OSU

Identification of irrigation practices using photographic and optical-mechanical scanning remote sensing techniques

Determination of geographic information system database characteristics : an application of the information integration theory

Aspen age structure and stand conditions on elk winter range in the northern Yellowstone ecosystem

Relationships between grass canopy characteristics and Landsat Thematic Mapper bands

Effects of scale properties on biodiversity mapping in Oregon

The application of spatial data analysis and visualization in the development of landscape indicators to assess stream conditions

Land cover change along the Willamette River, Oregon

A per-segment approach to improving aspen mapping from remote sensing imagery and its implications at different scales

The effects of land use changes on forest fires in major islands of Indonesia

Practitioner’s hands and academic eyes : a practical approach to improving disaster preparedness and response

The visualization of perspective systems and iconology in Dürer’s cartographic works : an in-depth analysis using multiple methodological approaches

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