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Filtering by: Creator Colorado. Dept. of Agriculture Remove constraint Creator: Colorado. Dept. of Agriculture Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.) License All rights reserved Remove constraint License: All rights reserved

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  • Addressing Data Resolution in Precision Agriculture

    Creator:
    Kelley, Jason
    Abstract:
    Irrigated agriculture constitutes the greatest consumptive water use globally, so that irrigation efficiency measures are an important part of global efforts to best utilize this limited resource. However, greater irrigation efficiency must be achieved while simultaneously maintaining or increasing crop yields and farming profitability. Incremental water use decisions are made...
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    Dissertation
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    required to realize the full potential of precision agriculture

  • Tree Physiological, Physical, and Chemical Characteristics Related to Spruce Beetle Colonization: Engelmann versus Blue Spruce

    Creator:
    Ott, Daniel S.
    Abstract:
    Blue spruce (Picea pungens) and Engelmann spruce (Picea engelmannii) experience varying levels of spruce beetle (Dendroctonus rufipennis (Kirby)) colonization, yet the underlying differences and mechanisms resulting in lower colonization for blue spruce are not known. Both spruce species have important roles in subalpine ecosystems where examining changes in mortality, distribution,...
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    Dissertation
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    the Engelmann spruce beetle in Colorado. US Department of Agriculture, Washington. McCarroll, D

  • Enhancing social-ecological resilience in the Colorado River Basin

    Creator:
    Eidem, Nathan T.
    Abstract:
    This research presents the Colorado River basin as a social-ecological system. Utilizing event data on cooperative and conflictive interactions over fresh water, the system is decomposed to look for evidence of outcomes of resilience enhancement. The Animas-La Plata Project in the upper San Juan basin is presented as a case...
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    Dissertation
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    : Conceptualization of the Colorado River basin social- ecological system

  • Rocks and reactors : an atomic interpretation of human rights, 1941-1979

    Creator:
    Richards, Linda Marie
    Abstract:
    The atomic age was enacted by many scientists as a way to realize health and human rights. Human rights were conceived in this context as rights to economic development, science education, and nuclear medicine. The United States Atomic Energy Commission (AEC) acted hand in hand with UN agencies and educators...
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    Dissertation
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    Microsoft Word - RichardsLindaM2014.doc AN ABSTRACT OF

  • Geneticist L.C. Dunn : politics, activism, and community

    Creator:
    Gormley, Melinda (Melinda Brooke)
    Abstract:
    L. C. Dunn (1893-1974) spent most of his scientific career conducting research in developmental genetics as a member of the Zoology Department at Columbia University in the City of New York. He had an accomplished scientific career researching mutations in mice, which earned him respect from other geneticists and scientists....
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    Dissertation
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    Microsoft Word - 00pretext _2_.doc AN ABSTRACT OF THE

  • Opening Pandora's Box at the Roof of the World : The Past and Present of Avian Influenza Science

    Creator:
    Canavan, Barbara C.
    Abstract:
    By means of a case study and historical analysis, this dissertation examines the past and present of avian influenza. By integrating disconnected histories of human and animal influenza, this dissertation links historical insights with the concerns of contemporary avian flu science. It is not only a natural history of avian...
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    Dissertation
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    more closely the role of humans in contemporary history through activities such as agriculture and

  • Honey Bees and Apple Trees : Hood River, Oregon as a Case Study for the Creation of the Honey Bee Pollination Industry

    Creator:
    Kellar, Brenda M.
    Abstract:
    The use of honey bees to pollinate apple orchards seems natural, even inevitable. This dissertation examines the relationship of beekeeping and apple growing in Hood River, Oregon in the mid-nineteenth to the mid-twentieth centuries, as a case study in the development of commercial pollination service. Within this time period the...
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    Dissertation
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    -class call for centralization of power. Carlson identifies the United States Department of Agriculture

  • Dixy Lee Ray, marine biology, and the public understanding of science in the United States (1930-1970)

    Creator:
    Ellis, Erik
    Abstract:
    This dissertation focuses on the life of Dixy Lee Ray as it examines important developments in marine biology and biological oceanography during the mid twentieth century. In addition, Ray's key involvement in the public understanding of science movement of the 1950s and 1960s provides a larger social and cultural context...
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    Dissertation
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    . NAS: Ad hoc committee on Marine Biology, Division of Biology and Agriculture. National Academy of

  • John Archibald Wheeler : a study of mentoring in modern physics

    Creator:
    Christensen, Terry M.
    Abstract:
    This dissertation has two objectives. The first objective is to determine where best to situate the study of mentoring (i.e. the 'making of scientists') on the landscape of the history of science and science studies. This task is accomplished by establishing mentoring studies as a link between the robust body...
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    Dissertation
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    ABSTRACT OF THE DISSERTATION OF Terry M. Christensen for the degree of Doctor of Philosophy in History

  • Thresholds of uncertainty : radiation and responsibility in the fallout controversy

    Creator:
    Jolly, J. Christopher
    Abstract:
    The public controversy over possible health hazards from radioactive fallout from atomic bomb testing began in 1954, shortly after a thermonuclear test by the United States spread fallout world wide. In the dissertation, I address two of the fundamental questions of the fallout controversy: Was there a threshold of radiation...
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    Dissertation
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    AN ABSTRACT OF THE DISSERTATION OF J. Christopher Jolly for the