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  • Space time coding in MIMO systems

    Creator:
    Xian, Liang
    Abstract:
    Multiple-input multiple-output (MIMO) antenna technology is promising for high-speed wireless communications without increasing the transmission band- width. Space time coding (STC) is a scheme that employs multiple antennas to increase transmission rate or to improve transmission quality. STC is used widely in mobile cellular networks, wireless local area networks (WLAN)...
    Resource Type:
    Dissertation
    Full Text:
    Philosophy in Electrical and Computer Engineering presented on August 2, 2006. Title: Space Time Coding in

  • Design of a Self-Regulating Deep Space Nuclear Reactor

    Creator:
    Robinson, Matthew Loren
    Abstract:
    An enabling technology for long duration, deep space missions is the availability of a high power, long-lived power supply. The goal of this work is the design of a self-regulating deep space nuclear reactor. The design objectives are to produce 250 kWth for a 25-year period using the presence of...
    Resource Type:
    Dissertation
    Full Text:
    -Regulating Two- Phase Fuel Space Nuclear Reactor”, presents the methodology and results that lead to an

  • Design techniques for wideband low-power Delta-Sigma analog-to-digital converters

    Creator:
    Wang, Yan
    Abstract:
    Delta-Sigma (ΔΣ) analog-to-digital converters (ADCs) are traditionally used in high quality audio systems, instrumentation and measurement (I&M) and biomedical devices. With the continued downscaling of CMOS technology, they are becoming popular in wideband applications such as wireless and wired communication systems,high-definition television and radar systems. There are two general realizations...
    Resource Type:
    Dissertation
    Full Text:
    (DT) switched-capacitor (SC) circuitry and the other employs continuous-time (CT) circuitry

  • Preschooler's perceptions of a patio garden

    Creator:
    Upington, Deborah A.
    Abstract:
    This study sought to fill a void in research literature supporting Attention Restoration Theory (ART) and the beneficial effects of exposure to natural, green spaces. The literature predominantly discusses studies with adult and older child participants, finding that exposure to natural environments often produces an attention-restoring effect. ART has been...
    Resource Type:
    Masters Thesis
    Full Text:
    perceptions and reactions to the garden space. Children were randomly selected to begin their interviews in

  • Amorphous oxide semiconductor thin-film transistor ring oscillators and material assessment

    Creator:
    Sundholm, Eric Steven
    Abstract:
    Amorphous oxide semiconductor (AOS) thin-film transistors (TFTs) constitute the central theme of this thesis. Within this theme, three primary areas of focus are pursued. The first focus is the realization of a transparent three-stage ring oscillator with buffered output and an output frequency in the megahertz range. This leads to...
    Resource Type:
    Masters Thesis
    Full Text:
    fastest oxide electronics ring oscillator reported, with an output frequency of 2.16 MHz, and a time

  • Quaternary Landscape Evolution and the Surface Expression of Plume-Lithosphere Interactions in the Greater Yellowstone Area

    Creator:
    Guerrero, Eduardo Francisco
    Abstract:
    Numerous investigations demonstrate that mantle convective processes such as upwelling affect the surface topography of the overriding plate. The surface expression of mantle flow has been coined ‘transient topography’. Transient topography in the North American plate is thought to result from a mantle thermal anomaly beneath the Yellowstone volcanic center,...
    Resource Type:
    Dissertation
    Full Text:
    thus hotspot tracks evolve over time. Morgan noted that “the gravity pattern and regionally high

  • Continuous time input pipeline ADCs

    Creator:
    Gubbins, David Patrick
    Abstract:
    Analog-to-digital converters (ADCs) convert analog continuous time signals into discrete time, digital format. One precondition that must be met for conventional nyquist rate ADCs is that the input signal must be suitably band-limited to an input bandwidth less than the nyquist frequency. This mandates expensive anti-alias filters which contribute to...
    Resource Type:
    Dissertation
    Full Text:
    group at OSU. I am so lucky to have had a major advisor who was so generous with his knowledge and time

  • Primal Matter : Deep Objects in Historical Accounts of the Glanton Gang

    Creator:
    Schauer, Austin A.
    Abstract:
    The question of deep time has been widely debated in the field of American Literature, with scholar Wai Chee Dimock arguing that a deep time perspective puts the chronology of different nations against one another. However, this argument has not adequately addressed the issue of how deep time theories would...
    Resource Type:
    Masters Thesis
    Full Text:
    — unfolding in its midst. Literature is the home of nonstandard space and time. Against the official borders

  • Our Moral Educators : Educational Debate and Representations of Teachers in the Mid-Century Victorian Novel

    Creator:
    Taylor, Corey
    Abstract:
    In this thesis, I read the teachers in four mid-century Victorian novels--Charles Dickens' David Copperfield (1850) and Hard Times (1854), Thomas Hughes' Tom Brown’s Schooldays (1857) and Charlotte Brontё's Villette (1853)-- within the context of mid-century English educational debate in an effort to explicate the ways in which these characters...
    Resource Type:
    Masters Thesis
    Full Text:
    reforms […] It’s time to start rewarding good teachers and stop making excuses for bad ones. It’s time