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  • Harnessing Heterogeneity in Human Gut Microbiome Data

    Creator:
    Tataru, Christine
    Abstract:
    The focus of this thesis is to design, characterize, and apply novel computational methods and molecular systems to interrogate heterogeneous human gut microbiome-related phenomena. In Chapter 2, I design, implement, and characterize a method for embedding co-occurrence patterns derived from massive 16s amplicon datasets. I use this method to 1....
    Resource Type:
    Dissertation
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    : Harnessing Heterogeneity in Human Gut Microbiome Data Abstract approved: Maude M. David The focus of this

  • Comparative Metagenomic Investigations Link the Functional Capacity of the Gut Microbiome to Vertebrate Physiology

    Creator:
    Armour, Courtney R.
    Abstract:
    Microscopic organisms inhabit virtually every niche on this planet, where they perform functions vital to all life on earth. Accordingly, humans host a complex community of microorganisms (i.e. the gut microbiome) that inhabit the gastrointestinal tract and modulate host physiology. Insight into the specific mechanisms through which gut microbes influence...
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    Dissertation
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    Gut Microbiome to Vertebrate Physiology Abstract approved

  • Toward making the invisible visible : studying science teaching self-efficacy beliefs

    Creator:
    Perkins, Catherine J.
    Abstract:
    This dissertation consists of two articles to be submitted for publication. The first, a literature review, makes visible common influences on science teaching self-efficacy beliefs and also points to potentially invisible validation concerns regarding the instrument used. The second investigates the participants' invisible science teaching self-efficacy beliefs and, through the...
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    Dissertation
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    Catherine J. Perkins Larry G. Enochs Emily van Zee Journal of Science Teacher Education

  • Ecophylogenetic Characterization of the Gut Microbiome of At-risk Companion and Food Animals

    Creator:
    Kirchoff, Nicole S.
    Abstract:
    Agricultural and companion animals are integral to our way of life as they provide us with nourishment, financial resources, transportation, and companionship. However, pets, managed animals in the agricultural industry, as well as wild populations of food animals are all subject to health and mortality risks. The gut microbiome is...
    Resource Type:
    Dissertation
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    : Ecophylogenetic Characterization of the Gut Microbiome of At-risk Companion and Food Animals Abstract

  • From Microbes to Megafauna: The Ecology of Gut Microbiomes in Wild Herbivores

    Creator:
    Couch, Claire E.
    Abstract:
    All mammals host communities of commensal microbes in and on their bodies. Recent technological advances, combined with experimental studies in laboratory animals, are beginning to reveal the ubiquitous links between the gut microbiome and host disease, metabolism, immunity, and numerous other host functions. A new challenge of microbiome research is...
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    Dissertation
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    . Title: From Microbes to Megafauna: The Ecology of Gut Microbiomes in Wild Herbivores

  • The influence of participating in a mandatory mixed-format student success seminar on persistence in an urban community college

    Creator:
    Mendoza, James A.
    Abstract:
    Over the past twenty years, the national three-year graduation rate for community college students has ranged from 44% to roughly 31% in 2013 (NCES, 2013). As a way to address such low graduation rates, colleges have implemented a myriad of services and programs (i.e., tutoring, mentoring, etc.). Another intervention is...
    Resource Type:
    Dissertation
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    Larry D. Roper Over the past twenty years, the national three-year graduation rate for community

  • 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
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    Mathematics AN ABSTRACT OF THE DISSERTATION OF Daniel J. Jansen for the degree of Doctor of

  • Lesbian leaders in action : influencing and transforming community college culture

    Creator:
    Kenney, Rebecca J.
    Abstract:
    The purpose of this study is to explore through their own stories and journeys (storjourns), how lesbian leaders influence and transform dominant community college culture. Five lesbian leaders participated who held the position of Director, Associate Dean, Dean, Executive Vice President, and President/Executive Dean. This microethnographical inquiry divulges and makes...
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    Dissertation
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    THE DISSERTATION OF Rebecca J. Kenney for the degree of Doctor of Philosophy in Education

  • The Roles of Dietary Nitrate in Bone and the Gut in an Ovarian Hormone-deficient Rodent Model

    Creator:
    Conley, Melissa N.
    Abstract:
    Osteoporosis is a common metabolic bone disease, affecting a third of women and a fifth of men over age 65. In the US, annual health care costs associated with osteoporosis are estimated to be over $20 billion. Osteoporosis is associated with increased fracture risk, which has been demonstrated to predict...
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    Dissertation
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    presented on June 8, 2016. Title: The Roles of Dietary Nitrate in Bone and the Gut in an Ovarian

  • A relationship between wave dispersion and fracture strength for a composite material

    Creator:
    Ilcewicz, Larry Bert
    Abstract:
    Wave dispersion and fracture are phenomena that involve. mechanisms triggered at the scale of a material's internal structure. Experiments were performed with a candidate material to judge the hypothesis that wave dispersion measurements can be used to nondestructively predict fracture strength. Wood-based particleboard was chosen as the candidate material because...
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    Dissertation
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    3, AN ABSTRACT OF THE THESIS OF Larry Bert Ilcewicz for the degree of Doctor of Philosophy 1984