Index Catalog // ScholarsArchive@OSU

Validation of an instrument for mathematics enhancement teaching efficacy of Pacific Northwest agricultural educators

Creator:: Jansen, Daniel J.
Abstract:: Teacher efficacy continues to be an important area of study in educational research. This study tested an instrument designed to assess the perceived efficacy of agricultural education teachers when engaged in lessons involving mathematics instruction. The study population of Oregon and Washington agricultural educators utilized in the validation of the...
Resource Type:: Dissertation
Full Text:: Teaching Efficacy: Oregon and Washington Agricultural Educators Perceived Efficacy toward Enhancing

The economics of agricultural groundwater quality : effects of spatial and temporal variability on policy design

Creator:: Fleming, Ronald A.
Abstract:: Non-point agricultural contaminants, such as nitrogen, may lower groundwater quality and thereby impose health and environmental risks. The objective of this study is to evaluate tax policies to control agricultural pollutants in a spatially heterogeneous and dynamic setting. The focus of the study is non-point source nitrate contamination of groundwater...
Resource Type:: Dissertation

The development and analysis of future agricultural landscapes

Creator:: Berger, Patricia A.
Abstract:: Alternative futures studies provide a way for policy-makers and stakeholders to investigate the future impacts of different management strategies by providing representations of possible outcomes. An alternative futures study was undertaken by the Pacific Northwest-Ecosystem Research Consortium for the Willamette River Basin, Oregon, USA, to determine how this regional system...
Resource Type:: Dissertation
Full Text:: Development and Analysis of Future Agricultural Landscapes Abstract approved: John P. Bolte Alternative

Remediation of atrazine in irrigation runoff by a constructed wetland

Creator:: Runes, Heather B.
Abstract:: Due to its frequent use in agriculture and its frequent detection in surface water, atrazine was chosen as a model compound to study the treatment capability of a surface flow wetland used to remediate irrigation runoff at a container nursery near Portland, Oregon. Further evaluation of treatment of atrazine was...
Resource Type:: Dissertation
Full Text:: near Portland, Oregon. Further evaluation of treatment of atrazine was performed under controlled

Oregon’s secondary agricultural education teachers’ level of computer-based technology integration, perceptions of barriers to computer-based technology integration, and the relationship to learning styles

Creator:: Gardner, Reynold D.
Abstract:: The focus of this research was to examine the relationship between the Oregon secondary agricultural education teachers’ level of computer-based technology integration, perceptions of barriers to computer-based technology integration, and learning style preferences. Additionally the correlational analysis of the level of computer-based technology integration and the following demographic variables was...
Resource Type:: Dissertation
Full Text:: the Oregon agricultural education teachers were most active in the phase of adoption

Health status in migrant and seasonal farm workers, and other clients in a community and migrant health center

Creator:: Greer, Marsha
Abstract:: Unknown questions remain concerning the health of migrant farm workers, seasonal farm workers, and other rural poor people. The objectives of this study were to determine the demographic profile of a sample from a Community and Migrant Health Center; to determine the prevalence of disease in migrant farm workers, seasonal...
Resource Type:: Dissertation
Full Text:: occupational groups. Information from medical records for clients who visited an Oregon Community and

Harvesting hunger : measuring food insecurity and hope in Oregon's Mexican agriculture and seafood workers

Creator:: Reeder, Julie A.
Abstract:: Food Insecurity exists whenever the availability of nutritionally adequate and safe foods or the ability to acquire acceptable foods in socially acceptable ways is limited or uncertain (LSRO, 1990). Factors that increase a household's risk for food insecurity include being low income and not being able to access formal and...
Resource Type:: Dissertation

Farm level response to agricultural effluent control strategies : the case of the Willamette Valley

Creator:: Taylor, Michael L. (Michael Lester), 1960-
Abstract:: Changes in the structure of the U.S. agricultural industry since World War II have transformed it into a highly productive component of the domestic economy. But these changes have not occurred without indirect costs. For example, the reliance on agricultural chemicals has produced environmental effects causing growing concern. In addition,...
Resource Type:: Dissertation
Full Text:: . Taylor for the degree of Doctor of Philosophy in Agricultural and Resource Economics presented June 26

Factors affecting enrollment trends in secondary agricultural programs as perceived by Oregon and California secondary agricultural instructors and their respective principals

Creator:: Bender, Mark E.
Abstract:: Purpose: The purpose of this study was to identify the major contributive factors affecting enrollment trends in secondary level agricultural programs in Oregon and California, as perceived by Oregon and California agricultural instructors and their respective principals. Methods and Procedures: A review of the literature revealed three areas that were...
Resource Type:: Dissertation
Full Text:: programs as perceived by Oregon and California secondary agricultural instructors and their respective

Evaluating benthic macroinvertebrates as bio-indicators of freshwater habitat quality in an eastern Oregon agro-ecosystem

Creator:: Scherr, Melissa A.
Abstract:: The effect of anthropogenic disturbance on river systems is gaining attention, and concerns about the state of freshwater natural resources are increasing globally, as are efforts to restore habitat that has been degraded by disturbance. In rivers, non-point source pollution affects the physical characteristics of the habitat and the endemic...
Resource Type:: Dissertation
Full Text:: : Evaluating Benthic Macroinvertebrates as Bio-indicators of Freshwater Habitat Quality in an Eastern Oregon

ScholarsArchive@OSU

Validation of an instrument for mathematics enhancement teaching efficacy of Pacific Northwest agricultural educators

The economics of agricultural groundwater quality : effects of spatial and temporal variability on policy design

The development and analysis of future agricultural landscapes

Remediation of atrazine in irrigation runoff by a constructed wetland

Oregon’s secondary agricultural education teachers’ level of computer-based technology integration, perceptions of barriers to computer-based technology integration, and the relationship to learning styles

Health status in migrant and seasonal farm workers, and other clients in a community and migrant health center

Harvesting hunger : measuring food insecurity and hope in Oregon's Mexican agriculture and seafood workers

Farm level response to agricultural effluent control strategies : the case of the Willamette Valley

Factors affecting enrollment trends in secondary agricultural programs as perceived by Oregon and California secondary agricultural instructors and their respective principals

Evaluating benthic macroinvertebrates as bio-indicators of freshwater habitat quality in an eastern Oregon agro-ecosystem

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