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Filtering by: Creator Moghaddas, Jason J. Remove constraint Creator: Moghaddas, Jason J. Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.)

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  • Influences of Thermal and Trophic Heterogeneity on Phenology, Growth, and Resource Use by Juvenile Coho Salmon

    Creator:
    Campbell, Emily Y.
    Abstract:
    Ecological resources available to freshwater fish shift spatially, temporally and across life stages. To better understand how spatial-temporal availability of resources influence fish, I examined the phenologies of hatching and emergence of Coho Salmon (Oncorhynchus kisutch) in streams with contrasting and strongly defined seasonal thermal variability. The study streams included...
    Resource Type:
    Dissertation
    Full Text:
    : ______________________________________________________ Jason B. Dunham Ecological resources

  • Validity and Reliability of the Unsupervised, Isokinetic Three-Minute All-Out Cycling Test for Critical Power

    Creator:
    Bronson, Staci M.
    Abstract:
    PURPOSE: We tested the hypothesis that the unsupervised, isokinetic 3- minute all-out cycling test (3MT) would be a valid and reliable way to determine end power (EP) and work done above end power (WEP). Additionally, we hypothesized that EP would successfully demarcate between heavy and severe-intensity exercise and thus represent...
    Resource Type:
    Dissertation
    Full Text:
    approved: ________________________________________ Jason T. Penry PURPOSE: We

  • New insights on an old topic : understanding the effects of forest harvest on trout in the context of climate

    Creator:
    Penaluna, Brooke E.
    Abstract:
    Studies of the effects of forest harvest on streams and fish have a long history in the Pacific Northwest. Results of this work have prompted development of new forest harvest practices that are more protective of these resources, but the effectiveness of these new practices has not been fully evaluated....
    Resource Type:
    Dissertation
    Full Text:
    : _____________________________________________________________________ Jason B. Dunham Studies of the effects of forest harvest on streams and fish have a long

  • Shrinkage study of high performance concrete for bridge decks

    Creator:
    Fu, Tengfei
    Abstract:
    In the field of civil infrastructure, bridge desks are typically constructed using high performance concrete (HPC). Concrete bridge decks demand qualities such as low permeability, high abrasion resistance, superior durability, and long design life. Over decades of field and laboratory experience, many HPC bridge decks have been found to be...
    Resource Type:
    Dissertation
    Full Text:
    Dr. Jason H. Ideker In the field of civil infrastructures, bridge decks have been widely

  • A Comprehensive Mechanistic Study on Using Fine Lightweight Aggregate to Mitigate Alkali-silica Reaction

    Creator:
    Li, Chang
    Abstract:
    Previous research has shown that using fine lightweight aggregate (FLWA) can be a promising strategy to mitigate alkali-silica reaction (ASR) in mortar and concrete. While several possible theories were proposed by researchers, discrepancies in testing methods, materials, and supporting evidence still exist. Therefore, this study was initiated. There are two...
    Resource Type:
    Dissertation
    Full Text:
    Jason H. Ideker Previous research has shown that using fine lightweight aggregate (FLWA) can be

  • Automation-Aided Collaborative Strategies in Signal Detection Tasks

    Creator:
    Duncan-Reid, Jackson
    Abstract:
    Automated systems have become increasingly important to human decision making and task performance in a wide variety of complex fields and situations. Decision aids, a specific form of automation, assist human operators in making complex decisions under conditions of uncertainty, such as air traffic control or combat identification. When humans...
    Resource Type:
    Dissertation
    Full Text:
    : ______________________________________________________ Jason S. McCarley Automated systems have become increasingly important to human

  • Carp, Climate, and Water Quality: Applying Systems Modeling to Ecosystem Recovery in Malheur Lake

    Creator:
    Pearson, James B.
    Abstract:
    Shallow lakes exist in either a clear or turbid state, with the clear state characterized by an abundance of aquatic macrophytes, diverse aquatic biota, low water column nutrients and phytoplankton biomass, whereas the turbid state is characterized by the opposite. These two distinct states are maintained by reinforcing (positive) feedback...
    Resource Type:
    Dissertation
    Full Text:
    Carpio) In a Shallow Lake- Wetland System1 James Pearson1, Jason Dunham2, J. Ryan Bellmore3

  • Beaches, Wine, and Weed: Economic Implications of Land Use Change in Oregon

    Creator:
    Beasley, W. Jason
    Abstract:
    The economic analysis of land use decisions provides insight into incentive structures faced by landowners and the impacts of landowner decisions on others. Qualifying and quantifying these incentives and impacts offers insight into the relevant characteristics of decision-making. In turn, this allows the researcher to model and predict land use...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF W. Jason Beasley

  • Biochemical and physiological indicators of behavioral impairment in salmonids exposed to chlorpyrifos and copper

    Creator:
    Sandahl, Jason
    Abstract:
    The purpose of this work was to determine if environmentally-relevant concentrations of chlorpyrifos and copper, two commonly detected chemicals in Western surface waters, can negatively impact the biological health of salmonids. Both compounds are highly neurotoxic to fish, but each with distinct biological target sites and mechanisms of action. We...
    Resource Type:
    Dissertation
    Full Text:
    Concentration Estimates for Acetyicholinesterase Inhibition. Jason F. Sandahi and Jeffrey J. Jenkins Oregon

  • High-performance data-parallel input/output

    Creator:
    Moore, Jason Andrew
    Abstract:
    Existing parallel file systems are proving inadequate in two important arenas: programmability and performance. Both of these inadequacies can largely be traced to the fact that nearly all parallel file systems evolved from Unix and rely on a Unix-oriented, single-stream, block-at-a-time approach to file I/O. This one-size-fits-all approach to parallel...
    Resource Type:
    Dissertation
    Full Text:
    THE THESIS OF Jason A. Moore for the degree of Doctor of Philosophy in Computer Science presented