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  • Characteristics of two noncarotenogenic light sensitive mutants of Scenedesmus obliquus strain D₃

    Creator:
    Harvey, Geoffrey W.
    Abstract:
    Two light sensitive mutants of the green alga Scenedesmus obliquus strain D₃ have been characterized. The photodynamic nature of their sensitivity has been established, the subchloroplast site of photodamage has been investigated, and their noncarotenogenic character has been verified. The two mutants possess several similarities, although mutant L. S. -41...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE THESIS OF Geoffrey W. Harvey for the

  • Non-Myopic Distributed Coordination and Planning for Robotic Teams

    Creator:
    Smith, Andrew
    Abstract:
    As robotic systems become increasingly prevalent in our lives (e.g., by harvesting food, assisting with disaster response and defense, and transporting persons and our goods around the world) there is a growing need to ensure that they can cooperate to achieve their intended goals. Robotic cooperation in the real-world is...
    Resource Type:
    Dissertation
    Full Text:
    : Non-Myopic Distributed Coordination and Planning for Robotic Teams Abstract approved: Geoffrey A

  • Deep learning for robotic exploration

    Creator:
    Caley, Jeffrey A.
    Abstract:
    Emerging applications for robotic data collection include ocean monitoring, emergency response and urban search and rescue. At the core of these applications is a robot's ability to make informed decisions on incomplete data. This dissertation addresses this problem by developing novel techniques for modeling and estimating structured environments using deep...
    Resource Type:
    Dissertation
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    Exploration Abstract approved: Geoffrey A Hollinger Emerging applications for robotic data collection

  • Enzymatic studies of the prenatal chick, with special reference to the multibple forms of liver soluble NADP-linked isocitric dehydrogenase

    Creator:
    Cheung, Geoffrey Peter
    Abstract:
    Levels of activity of glucose-6-phosphate- , 6-phosphogluconate- , and isocitric- dehydrogenase were measured in the soluble and particulate fractions of heart, brain and liver at several ages throughout the development of the chick embryo. Compared to isocitric dehydrogenase, levels of glucosesphosphate- , and 6-phosphogluconate- dehydrogenase are generally low. This suggests...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE THESIS OF Chemistry GEOFFREY PETER

  • Dynamic modeling, control and linear theory of a projectile equipped with a rotating internal part

    Creator:
    Frost, Geoffrey W.
    Abstract:
    Dynamic modeling of the atmospheric flight mechanics of a projectile equipped with an uncontrolled internal rotating disk is investigated and a modified projectile linear theory is established. It is shown through modeling of this type of projectile that several coefficients of the epicyclic dynamics are altered, leading to changes in...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Geoffrey W. Frost for the

  • Predicting the stability, equilibrium response, and nonequilibrium dynamics of ecological systems

    Creator:
    Hosack, Geoffrey R.
    Abstract:
    In this dissertation, new theory and its applications are developed to predict three properties of complex ecological communities: stability, equilibrium response, and non-equilibrium dynamics. First, a graph-theoretic analysis identifies the interconnections in a complex ecosystem that promote or diminish stability (Chapter 2). The hierarchy of interactions that influences stability and...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Geoffrey R. Hosack for the degree of Doctor of Philosophy in

  • Examining the role of relationship characteristics and dynamics on sexual risk behavior among gay male couples

    Creator:
    Mitchell, Jason W.
    Abstract:
    Recent estimates indicate that over 50% of gay men acquire HIV from their main sexual partners while in their relationship (Sullivan et al., 2009). Despite this statistic, the majority of research has focused on individual factors as predictors of unprotected anal intercourse (UAI) and not on relationship factors. The few...
    Resource Type:
    Dissertation
    Full Text:
    DISSERTATION OF Jason W. Mitchell for the degree of Doctor of Philosophy in Public Health presented on

  • Factors that influence risk behavior in HIV infected women receiving antiretroviral therapy in Kampala and Masaka, Uganda

    Creator:
    MacLachlan, Ellen W.
    Abstract:
    Women living in sub-Saharan Africa are more affected by HIV/AIDS than any other population in the world. Two-thirds of all new HIV infections worldwide occur in sub-Saharan Africa and over 60% of these infections are in women. Indeed, 70% of all women globally who are infected with HIV reside in...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Ellen W. MacLachlan for the degree of Doctor of Philosophy in

  • Learning-based Techniques for Fast and Robust Motion Planning

    Creator:
    Chow, Scott
    Abstract:
    Motion planning is a cornerstone of autonomous robots, enabling robots to safely and efficiently perform tasks such as package delivery, infrastructure inspection, and manipulation. However, as the field of robotics matures, robotic systems are being developed that (1) are challenging to analytically model, (2) require computationally expensive model-based controllers, and...
    Resource Type:
    Dissertation
    Full Text:
    Techniques for Fast and Robust Motion Planning Abstract approved: Geoffrey A. Hollinger Motion planning is

  • Augmented Deep Learning Techniques for Robotic State Estimation

    Creator:
    Nicolai, Austin L.
    Abstract:
    While robotic systems may have once been relegated to structured environments and automation style tasks, in recent years these boundaries have begun to erode. As robots begin to operate in largely unstructured environments, it becomes more difficult for them to effectively interpret their surroundings. As sensor technology improves, the amount...
    Resource Type:
    Dissertation
    Full Text:
    Deep Learning Techniques for Robotic State Estimation Abstract approved: Geoffrey A. Hollinger While