Index Catalog // ScholarsArchive@OSU

The distribution of geologic and artifact obsidian from the Silver Lake/Sycan Marsh geochemical source group, South-Central Oregon

Creator:: Thatcher, Jennifer J.
Abstract:: Geochemical characterization methods are commonly used in the reconstruction of prehistoric raw material use and procurement systems. Trace element studies of lithic source material and artifacts, specifically those made of obsidian, can reveal important information about the environmental and cultural factors which influence the prehistoric distribution of raw material. The...
Resource Type:: Masters Thesis

Spatial analysis of soil depth variability and pedogenesis along toposequences in the Troodos Mountains, Cyprus

Creator:: Robins, Colin R.
Abstract:: In unstable landscapes, modern pedological research explores the role of soils as products and indicators of geomorphologic change. Understanding the dynamics of hill slope pedogenesis is especially important in regions with limited, poor, or threatened soil resources. The island of Cyprus, situated in the eastern Mediterranean, is claimed by many...
Resource Type:: Masters Thesis

The influences of habitat structure and landscape heterogeneity on African buffalo (Syncerus caffer) group size in Hluhluwe-Imfolozi Game Reserve, South Africa

Creator:: Dora, Cathleen Anna
Abstract:: This study aimed to connect habitat and landscape scale variation, through time and space, to wildlife population dynamics. I studied African buffalo (Syncerus caffer) group size according to habitat structure, landscape heterogeneity, forage quality, and water availability in Hluhluwe-iMfolozi Game Reserve, South Africa. I used two approaches to study grouping...
Resource Type:: Masters Thesis

A recurrent neural network implementation using the graphics processing unit

Creator:: Moore, Christopher
Abstract:: We took the back-propagation algorithms of Werbos for recurrent and feed-forward neural networks and implemented them on machines with graphics processing units (GPU). The parallelism of these units gave our implementations a 10 to 100 fold increase in speed. For nets with less than 20 neurons the machine performed faster...
Resource Type:: Masters Thesis

Characterizing patterns of wetland occurrence in Oregon using an interactive geodatabase : a method for conservation planning

Creator:: Larsen, Jennifer (Jennifer Elizabeth)
Abstract:: Several state and federal agencies have identified Oregon's coastal wetlands as priority areas for conservation, and in some cases have specifically singled out nontidal (mostly palustrine) wetlands as a major concern. Recent research has highlighted the need to study and manage wetlands from a regional perspective that considers the distribution...
Resource Type:: Masters Thesis

Spatial and temporal patterns of "super-old" Douglas-fir trees of the central western Cascades, Oregon

Creator:: Giglia, Sheryl K.
Abstract:: Old-growth in the Pacific Northwest is generally defined as trees that are more than 200 years old. A great deal of analysis and discussion about old-growth forests in western Oregon, however, has focused on the relatively widespread 400 to 500 year age class of primarily Douglas-fir (Pseudotsuga menziesii) trees. The...
Resource Type:: Masters Thesis

Capturing local knowledge for cooperative fisheries management using a participatory geographic information system (GIS) approach in Port Orford, Oregon

Creator:: Wedell, Victoria A.
Abstract:: This study demonstrates the utility of combining available scientific data with local ecological knowledge in a Geographic Information System (GIS) to support community-based fisheries management. The approach used provides both the framework for capturing important ecological, economic and social information relevant to marine fisheries management, and also offers coastal citizens...
Resource Type:: Masters Thesis

Capturing local knowledge for cooperative fisheries management using participatory geographic information system (GIS) approach in Port Orford, Oregon

Creator:: Wedell, Victoria A.
Abstract:: This study demonstrates the utility of combining available scientific data with local ecological knowledge in a Geographic Information System (GIS) to support community-based fisheries management. The approach used provides both the framework for capturing important ecological, economic and social information relevant to marine fisheries management, and also offers coastal citizens...
Resource Type:: Masters Thesis

Toxic politics at 64N, 171W : addressing military contaminants on St. Lawrence Island, Alaska

Creator:: Henifin, Kai A.
Abstract:: St. Lawrence Island, Alaska is home to two Formerly Used Defense Sites (FUDS) under remediation by the U.S. Army Corps of Engineers since 1985. After more than two decades the local residents continue to be concerned about inadequate site characterization and cleanup. During the summer of 2005, I collected ethnographic...
Resource Type:: Masters Thesis

Hazards of inequality : comparing two neighborhoods in San Francisco in the 1989 Loma Prieta Earthquake

Creator:: Moore, Monika Z.
Abstract:: This study examined two neighborhoods in San Francisco with similar earthquake-induced ground failure history -- the Marina District and the South of Market Area (SoMa) -- in the aftermath of the 1989 Loma Prieta earthquake. The earthquake struck shortly after 5 pm on October 17th, 1989 and registered 6.9 in...
Resource Type:: Masters Thesis

A comparison of seafloor sonar classification methods through the use of error matrices and 3 dimensional GIS visualization : a multibeam sonar investigation of Nehalem Bank, Oregon

Creator:: Lanier, Andrew S.
Abstract:: Multibeam sonar data was collected on Nehalem Bank, off of the Oregon Coast with the purpose of increasing the spatial resolution of our knowledge of the area and delineating seafloor habitats. The system used was the Kongsberg Simrad EM-300 operating at 30 kHz. The data set collected includes both topographic...
Resource Type:: Masters Thesis

Exotic plant species dynamics from 1994 to 2005 on road networks in forested landscapes of western Oregon

Creator:: Sheehy, Samantha
Abstract:: Although the Pacific Northwest has the least proportion of non-native plant species in relation to other regions of North America, exotic species continue to spread into mountainous areas, including the Cascade Range. In a forested landscape, road networks can act as corridors for exotic plant dispersal and establishment, helping species...
Resource Type:: Masters Thesis

The timing and evolution of Cenozoic extensional normal faulting in the southern Tobin Range, Pershing County, Nevada

Creator:: Gonsior, Zachary J.
Abstract:: The Tobin Range of central Nevada lies in the Basin and Range extensional province near the transition between more extended terrane (>50%) to the south and east, and generally less extended terrane to the north and west. Geologic mapping, 40Ar/39Ar dating and whole-rock geochemical analysis were employed to establish the...
Resource Type:: Masters Thesis

Integration of oceanographic information off the Washington and Oregon coasts into west coast groundfish ecology and fisheries management

Creator:: Juan Jorda, Maria Jose
Abstract:: To date, the use of oceanographic data in fisheries management has been limited by the scarcity and the difficulty of accessing complete oceanographic datasets. Consequently, fish stocks are managed with limited knowledge about the habitat where fish live and incomplete understanding of what oceanographic conditions affect their populations. With the...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

The distribution of geologic and artifact obsidian from the Silver Lake/Sycan Marsh geochemical source group, South-Central Oregon

Spatial analysis of soil depth variability and pedogenesis along toposequences in the Troodos Mountains, Cyprus

The influences of habitat structure and landscape heterogeneity on African buffalo (Syncerus caffer) group size in Hluhluwe-Imfolozi Game Reserve, South Africa

A recurrent neural network implementation using the graphics processing unit

Characterizing patterns of wetland occurrence in Oregon using an interactive geodatabase : a method for conservation planning

Spatial and temporal patterns of "super-old" Douglas-fir trees of the central western Cascades, Oregon

Capturing local knowledge for cooperative fisheries management using a participatory geographic information system (GIS) approach in Port Orford, Oregon

Capturing local knowledge for cooperative fisheries management using participatory geographic information system (GIS) approach in Port Orford, Oregon

Toxic politics at 64N, 171W : addressing military contaminants on St. Lawrence Island, Alaska

Hazards of inequality : comparing two neighborhoods in San Francisco in the 1989 Loma Prieta Earthquake

A comparison of seafloor sonar classification methods through the use of error matrices and 3 dimensional GIS visualization : a multibeam sonar investigation of Nehalem Bank, Oregon

Exotic plant species dynamics from 1994 to 2005 on road networks in forested landscapes of western Oregon

The timing and evolution of Cenozoic extensional normal faulting in the southern Tobin Range, Pershing County, Nevada

Integration of oceanographic information off the Washington and Oregon coasts into west coast groundfish ecology and fisheries management

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