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  • Radar and Optical Remote Sensing of Submesoscale Frontal Features

    Creator:
    Simpson, Alexandra J.
    Abstract:
    The coastal region is home to many types of surface fronts that exist on a submesoscale (1-10 $km$). While in situ observations capture point or transect observations of frontal behavior subsurface, their complex spatial patterns can be well-captured using remote sensing techniques, which provide synoptic views of the ocean surface...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Alexandra J. Simpson

  • Wave-by-Wave Forecasting via Assimilation of Marine Radar Data

    Creator:
    Simpson, Alexandra Joyce
    Abstract:
    A wave-by-wave forecasting system is desired for optimization of wave energy conversion devices and for improving safety of vessel-based marine operations. This study outlines the first validation attempts of a recently developed forecasting system called Wavecast. The forecasting approach uses X-Band marine radar images for data assimilation, then reconstructs and...
    Resource Type:
    Masters Thesis
    Full Text:
    Forecasting System via Data Assimilation of Marine Radar Images Alexandra J. Simpson Oregon State

  • Cover crop effects on root rot of sweet corn and soil properties

    Creator:
    Miyazoe, Mikio
    Abstract:
    Root rot of sweet corn in western Oregon and Washington is a significant disease that can reduce yield of intolerant cultivars of processed sweet corn by fifty percent. Root rot is caused by a complex of soilborne organisms, including Drechslera sp., Phoma terrestris, and Pythium arrhenomanes. Processors have adopted tolerant...
    Resource Type:
    Masters Thesis
    Full Text:
    : _______________________________________________________________________ Alexandra G. Stone Root rot of sweet corn in western Oregon and Washington is a

  • The Influence of Scent and Owner Presence on Cat Attachment Behavior

    Creator:
    Behnke, Alexandra C.
    Abstract:
    Domesticated cats frequently use their sense of smell to navigate their environment, convey social cues, and communicate with other individuals. In applied contexts, cat owners are often encouraged to leave items holding their scent with their cat in periods of absence with the aim of reducing stress. The purpose of...
    Resource Type:
    Honors College Thesis
    Full Text:
    : olfaction and feline behaviour. Feline Practice, 7(5), 8–10. King, J. N., Simpson, B. S., Overall, K. L

  • Appraisals of Military Service, PTSD, and Functional Health of Vietnam Combat Veterans: Findings from the VALOR Study

    Creator:
    Zinn, Alexandra D.
    Abstract:
    Previous research on WWII veterans in their 70’s and 80’s has shown that positive and negative appraisals of military service mediate between combat exposure and PTSD symptoms in late life. This thesis extends this research in two ways, first by determining how these variables relate to functional health in later...
    Resource Type:
    Honors College Thesis
    Full Text:
    Health of Vietnam Combat Veterans: Findings from the VALOR Study by Alexandra Zinn

  • Private forests, public policy : oak conservation on family forests in Oregon’s Willamette Valley

    Creator:
    Fischer, Alexandra Paige
    Abstract:
    In the United States, many of the thorniest natural resource conflicts occur on private lands. This is especially true in the Willamette Valley of Western Oregon where the hallmark habitat type, Oregon white oak woodland and savanna, is imperiled. Almost exclusively found on private land, Oregon white oak is threatened...
    Resource Type:
    Dissertation
    Full Text:
    OF THE DISSERTATION OF Alexandra Paige Fischer for the degree of Doctor of Philosophy in Forest

  • Soil organic matter management and root health

    Creator:
    Darby, Heather
    Abstract:
    Annual applications of fresh or composted dairy manure were assessed for their effects on root rots of sweet corn and snap bean and damping-off of cucumber in a field soil. Soil biological and physical properties were measured as possible indicators of root rot suppressive potential. Regardless of amendment type or...
    Resource Type:
    Dissertation
    Full Text:
    Management and Root Health. Alexandra G. Stone Annual applications of fresh or composted dairy manure were

  • Winter Squash: Production and Storage of a Late Winter Local Food

    Creator:
    Wetzel, Jennifer D.
    Abstract:
    Winter squash is an important late winter vegetable crop for local and regional markets; however, farmers in western Oregon report that this crop is marginally profitable due to losses in storage and relatively low yields for the high culinary value kabocha and buttercup types. In order to increase the sales...
    Resource Type:
    Masters Thesis
    Full Text:
    approved: _____________________________________________________________________ Alexandra G. Stone

  • Serial manure amendments : effects on soil properties and root rot of sweet corn

    Creator:
    Cox, Bonnie S. Hoffman
    Abstract:
    The effect of serial (multiple-year) organic matter (OM) amendment on soil properties has been described in some cropping systems, although less is known about the effect of serially amended field soils on soil-borne plant diseases. The objectives of this study were to describe the effects of the third and fourth...
    Resource Type:
    Masters Thesis
    Full Text:
    : Effects on Soil Properties and Root Rot of Sweet Corn. Abstract aPP Alexandra G. Stone The effect of

  • Numerical Characterization and Modeling Uncertainty of Frame-Spine and Frame-Spine-FLC Full-Scale Specimens Tested at E-Defense Shake-Table

    Creator:
    Astudillo, Bryam
    Abstract:
    The characterization of the seismic performance of structures relies on numerical simulations. However, estimates of seismic response are subject to various sources of uncertainty, including modeling uncertainty. This research estimated the response of two full-scale structural specimens composed of a moment resisting frame, elastic spines, and force-limiting connections (FLC), which...
    Resource Type:
    Masters Thesis
    Full Text:
    : _________________________________________ Barbara Simpson The characterization of the seismic performance of structures relies on