With 97% of the world’s freshwater resources stored underground, the connection between groundwater resources to the metrics of space, scale and time common to the geographic study of natural resources has not been extensively investigated by geographers. While nearly 240 transboundary aquifers are mapped across the world, a potential “tragedy”...
The basaltic landscapes of the Oregon High Cascades form a natural laboratory for examining how geologic setting and history influence groundwater flowpaths, streamflow sensitivity to climate, and landscape evolution. In the High Cascades, highly permeable young basaltic lavas form extensive aquifers. These aquifers are the dominant sources of summer streamflow...
The aggregate industry is responsible for the extraction and production of crushed stone, sand, and gravel— the literal building blocks of our society. Across the U.S. there are tens of thousands of quarries and sand and gravel pits, the majority of which are left abandoned or with minimal reclamation efforts....
The present research was an exploratory study which investigated the marketing practices of textile-related, home-based business owners. Questionnaires were mailed to 204 textile-related, home-based businesses throughout the continental United States. The final response rate was 42 percent with 86 useable questionnaires. A five-point semantic differential scale was used to measure...
The Thomas Kay Woolen Mill operated between 1890 and 1962. The mill produced predominately woolen blankets and woolen fabrics for outerwear garments. Mission Mill Museum Association purchased the woolen mill after its closure in order to develop the property as a museum. The purpose of this study was to provide...
The present study examined the influence of country-of- origin on the apparel purchase decision. One-hundred and eighty-one adult female sweater purchasers were surveyed directly following the purchase of a sweater for personal use in the Portland, Oregon, metropolitan area. The sample consisted of 138 department store shoppers and 43 discount...
The purpose of this paper is to provide, at a basic level,
product layouts for an order picking warehouse that will minimize
average order picking time. A statistical model is developed to
ensure that optimal results rather than just 'good' results are
obtained. It is shown that simple but general...
During much of the Early and Middle Devonian, shallow normalmarine and peritidal sediments were deposited in northwestern ClarkCounty, Nevada. Lack of a standard stratigraphic nomenclature for thearea necessitates utilizing terminology from central Nevada andwestern Utah.The Sevy Dolomite represents Early Devonian deposition in a tidalflat environment. A Zlichovian transgression initiated deposition...
Full Text:
OF THE THESIS OF
Linda Jane Jarvis for the degree of Master of Science
in Geology presented on May
Nuclear thermal propulsion (NTP) is a viable technology for near-term interplanetary exploration. Of the candidate mission architectures that are currently available for a crewed Mars mission, NTP permits the greatest flexibility in launch window selection and provides the shortest possible trip time, thereby reducing risks associated with cosmic ray exposure,...