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Filtering by: Creator Beckerman, John R. Remove constraint Creator: Beckerman, John R. Resource Type Dissertation Remove constraint Resource Type: Dissertation

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  • A Contingency-Based Evaluation for Beaver Restoration of Salmon Habitat in Oregon Coastal Streams

    Creator:
    Stevenson, John R.
    Abstract:
    Streams across the western United States are impaired from human alterations that have reduced freshwater habitat by simplifying channel complexity and disconnecting floodplains (Knox et al., 2022; Waples et al., 2008; Wohl, 2014). Climate change is likely to continue exacerbating these risks by warming summer surface stream temperatures (Crozier et...
    Resource Type:
    Dissertation
    Full Text:
    John Raymond Stevenson for the degree of Doctor of Philosophy in Fisheries Science presented on

  • Cultural controls for suppressing Phytophthora cinnamomi root rot of blueberry

    Creator:
    Yeo, John R.
    Abstract:
    Phytophthora cinnamomi is a soilborne pathogen that causes root rot disease of highbush blueberry (Vaccinium corymbosum L.). When new installations of susceptible blueberry cultivars are infected with P. cinnamomi, plants often fail to grow significant new tissue, greatly reducing yields over the life of the planting. Chemical fungicides are available...
    Resource Type:
    Dissertation
    Full Text:
    THE DISSERTATION OF John R. Yeo for the degree of Doctor of Philosophy in Soil Science presented

  • G, a language based on demand-driven stream evaluations

    Creator:
    Placer, John R.
    Abstract:
    A programming paradigm can be defined as a model or an approach employed in solving a problem. The results of the research described in this document demonstrate that it is possible to unite several different programming paradigms into a single linguistic framework. The imperative, procedural, applicative, lambda-free, relational, logic and...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE THESIS OF John R. Placer for the degree of Doctor of Philosophy in Computer

  • Evaluation of horizontal axis wind turbine blade loads using unsteady aerodynamics

    Creator:
    Hartin, John R.
    Abstract:
    Most existing analyses of the blade loads on horizontal axis wind turbines are conducted using linear steady-state aerodynamics, but evaluation of loads resulting from wind turbulence or gusts may not be adequate using these techniques. This study develops single-parameter approximations for both the shed wake and trailing wake components of...
    Resource Type:
    Dissertation
    Full Text:
    using unsteady aerodynamics AN ABSTRACT OF THE THESIS OF John R. Hartin for the degree of Doctor of

  • Direct-sampling optical techniques for the study of transient combustion events

    Creator:
    Herron, John R.
    Abstract:
    Techniques have been developed for measuring the temperature, stable species concentrations, and atomic radical concentrations during a transient combustion event. They combine the features of direct sampling with two spectroscopic techniques to produce relatively simple diagnostic techniques to obtain time-resolved measurements. In this study, a transient event was provided by...
    Resource Type:
    Dissertation
    Full Text:
    transient combustion events AN ABSTRACT OF THE THESIS OF John R. Herron for the degree of Doctor of

  • An investigation of the measurement of individual risk attitudes

    Creator:
    Winter, John R.
    Abstract:
    Two direct elicitation of utility (D.E.U.) techniques were used to estimate risk attitudes of a group of agricultural producers. The two elicitation techniques used in the study were 1) an error-in-response model using a modified Ramsey method, and 2) stochastic dominance with respect to a function (SDF). The primary objective...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE THESIS OF John Randall Winter for

  • Mechanical behavior of coniferous trees subjected to wind loading

    Creator:
    Moore, John R.
    Abstract:
    The behavior of coniferous trees subjected to wind loading was investigated through a series of experiments and also through simulation modeling. Previous studies that measured the natural oscillation frequencies and damping ratios were reviewed and equations were developed for predicting the natural frequency of a tree from the ratio of...
    Resource Type:
    Dissertation