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Filtering by: Creator Wirth, Julie A. Remove constraint Creator: Wirth, Julie A. Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.)

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  • Investigation of Thermal Degradation in Structural Alloys for Nuclear Power Systems

    Creator:
    Teng, Fei
    Abstract:
    The thermal degradation of structural materials is considered to be a key factor for evaluating the lifetime of current nuclear power plants. Ni-based and Fe-based alloys, such as 690, 625, 304, and 316, are widely used in nuclear industry as structural components due to the extraordinary corrosion resistance and mechanical...
    Resource Type:
    Dissertation
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    sincere appreciation to my Ph.D. advisor Dr. Julie Tucker for guiding me from a fresh graduate student

  • Corrosion Resistance of Alloys in Direct-Fired Supercritical CO₂ Power Cycle Aqueous Environments

    Creator:
    Repukaiti, Reyixiati
    Abstract:
    Using supercritical CO₂ (sCO₂) as a working fluid has increasingly gained attention in the energy industry. sCO₂ power cycles has various advantages, such as high cycle efficiency, compact turbomachinery, and potential zero CO₂ emission. Along with these benefits, materials degradation issues have also been emphasized in the last decade. Aqueous...
    Resource Type:
    Dissertation
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    ACKNOWLEDGEMENTS First and foremost, I’d like to sincerely thank my advisor, Dr. Julie Tucker, for taking a

  • Coordination for Scalable Multiple Robot Planning Under Temporal Uncertainty

    Creator:
    Marcon dos Santos, Gilberto
    Abstract:
    This dissertation incorporates coalition formation and probabilistic planning towards a domain-independent automated planning solution scalable to multiple heterogeneous robots in complex domains. The first research direction investigates the effectiveness of Task Fusion and introduces heuristics that improve task allocation and result in better quality plans, while requiring lower computational cost...
    Resource Type:
    Dissertation
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    : Coordination for Scalable Multiple Robot Planning Under Temporal Uncertainty Abstract approved: Julie A

  • Multi-Dimensional Task Recognition for Human-Robot Teaming

    Creator:
    Baskaran, Prakash
    Abstract:
    Human-robot teams involve humans and robots collaborating to achieve tasks under various environmental conditions. Successful teaming requires robots to adapt autonomously in real-time to a human teammate's state. An important element of such adaptation is the ability for the robot to infer the tasks performed by their human teammates. Human-robot...
    Resource Type:
    Dissertation
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    -Dimensional Task Recognition for Human-Robot Teaming Abstract approved: Julie A. Adams Human-robot teams

  • Understanding Molybdenum Isotope Dynamics in Terrestrial Environments

    Creator:
    King, Elizabeth K.
    Abstract:
    This dissertation works towards determining the mechanisms driving the Mo isotopic composition of soils, and how these signals may be used to refine the use of Mo as a proxy of biogeochemical processes. The first step towards quantifying Mo fractionation in soils is to determine the mechanisms controlling Mo accumulation,...
    Resource Type:
    Dissertation
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    : _____________________________________________________ Julie C. Pett-Ridge This dissertation works towards determining the mechanisms driving

  • Structure and Actuation of Cephalopod-Inspired Soft Robots

    Creator:
    Olson, Gina M.
    Abstract:
    Cephalopod-inspired soft robot arms have been studied as a new type of manipulator. These arms have been proposed for reach and grab tasks, underwater locomotion via swimming and walking, and robotic surgery. However, the capabilities of existing soft arms are limited to simple motions and light loads. Arm design has...
    Resource Type:
    Dissertation
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    . Title: Structure and Actuation of Cephalopod-Inspired Soft Robots Abstract approved: Julie A. Adams

  • Beyond the 16 EPA priority pollutant PAHs : environmental characterizations of oxygenated PAHs and dibenzopyrene isomers

    Creator:
    Layshock, Julie
    Abstract:
    Polycyclic aromatic hydrocarbons (PAHs) with a molecular weight (MW) of 302 and oxygenated-PAHs (OPAHs) have demonstrated toxicity beyond that of frequently monitored and known carcinogenic PAHs. Airborne particulate matter (PM) was characterized for MW 302 isomers to evaluate risk and air quality indices and OPAHs in order to fill data...
    Resource Type:
    Dissertation
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    DISSERTATION OF Julie Layshock for the degree of Doctor of Philosophy in Toxicology presented on May 4, 2010

  • Development of performance based test procedures for asphalt mixtures

    Creator:
    Kliewer, Julie E.
    Abstract:
    In 1987, Congress authorized a 5 year $150 million dollar research program called the Strategic Highway Research Program (SHRP). SHRP was divided into four major areas, including the asphalt research program. The asphalt research program was divided into six major research contracts, one such contract, SHRP-003A was called Performance Related...
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    Dissertation
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    Asphalt Mixtures by Julie E. Kliewer A THESIS submitted to Oregon State University in partial

  • Boundary Dynamics of a Transformative Learning Network : Improving Connection at the Interface of Science and Society

    Creator:
    Risien, Julie
    Abstract:
    Transformative learning networks are a specific type of loose network with geographically distributed members and member organizations. They hold particular promise for transformation when both top-down and bottom-up processes have failed to support desired systems-level change. The aim of this dissertation is to build knowledge about the social-interactional processes, roles,...
    Resource Type:
    Dissertation
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    . ©Copyright by Julie Risien June 8, 2018 All Rights Reserved Boundary Dynamics of a

  • Aqueous Corrosion and High Temperature Oxidation in Supercritical Carbon Dioxide Environments

    Creator:
    Teeter, Lucas
    Abstract:
    The corrosion resistance of steels and nickel based alloys was investigated in supercritical CO2 (sCO2). Two types of experiments were conducted. The first set of experiments were conducted in a low temperature aqueous environment to simulate conditions that would exist in direct sCO2 power cycle low temperature heat exchangers. The...
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    Dissertation
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    : Julie D. Tucker The corrosion resistance of steels and nickel based alloys was investigated in su