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  • 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...
    Resource Type:
    Dissertation
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    of Science on April 3, 2009. Title: John Archibald Wheeler: A Study of Mentoring in Modern Physics

  • Agricultural policy and productivity: evidence from Brazilian censuses

    Creator:
    Rada, Nicholas E. and Buccola, Steven T.
    Abstract:
    Brazil's economic strategy has shifted hesitatingly during the last several decades from one of producer protection to trade competitiveness. Exploiting the variations these shifts have afforded, we use a sequence of decennial agricultural censuses to examine Brazilian policy implications for agricultural competitiveness and efficiency. Total factor productivity is decomposed into...
    Resource Type:
    Article
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    technology indica- tor; and i = 1 . . . N a set of observations on technology T = {(xkit, yjit, t) : xkit can

  • Conditions favouring Bromus tectorum dominance of endangered sagebrush steppe ecosystems

    Creator:
    Reisner, Michael D., Grace, James B., Pyke, David A., and Doescher, Paul S.
    Abstract:
    1. Ecosystem invasibility is determined by combinations of environmental variables, invader attributes, disturbance regimes, competitive abilities of resident species and evolutionary history between residents and disturbance regimes. Understanding the relative importance of each factor is critical to limiting future invasions and restoring ecosystems. 2. We investigated factors potentially controlling Bromus...
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    Article
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    indi- cator variables. Bromus tectorum cover was selected as the indica- tor to measure ‘Invasion

  • Kidney Function and Mortality in Octogenarians: Cardiovascular Health Study All Stars

    Creator:
    Shastri, Shani, Katz, Ronit, Rifkin, Dena E., Fried, Linda F., Odden, Michelle C., Peralta, Carmen A., Chonchol, Michel, Siscovick, David, Shlipak, Michael G., Newman, Anne B., and Sarnak, Mark J.
    Abstract:
    Objectives: To examine the association between kidney function and all-cause mortality in octogenarians. Design Retrospective analysis of prospectively collected data. Setting: Community. Participants: Serum creatinine and cystatin C were measured in 1,053 Cardiovascular Health Study (CHS) All Stars participants. Measurements: Estimated glomerular filtration rate (eGFR) was determined using the Chronic...
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    Article
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    studies from the CHS cohort have shown that cystatin C is a stronger predic- tor of adverse outcomes than

  • An assessment of phytoplankton primary productivity in the Arctic Ocean from satellite ocean color/in situ chlorophyll-a based models

    Creator:
    Lee, Younjoo J., Matrai, Patricia A., Friedrichs, Marjorie A. M., Saba, Vincent S., Antoine, David, Ardyna, Mathieu, Asanuma, Ichio, Babin, Marcel, Bélanger, Simon, Benoît‐Gagné, Maxime, Devred, Emmanuel, Fernández‐Méndez, Mar, Gentili, Bernard, Hirawake, Toru, Kang, Sung‐Ho, Kameda, Takahiko, Katlein, Christian, Lee, Sang H., Lee, Zhongping, Mélin, Frédéric, Scardi, Michele, Smyth, Tim J., Tang, Shilin, Turpie, Kevin R., Waters, Kirk J., and Westberry, Toby K.
    Abstract:
    We investigated 32 net primary productivity (NPP) models by assessing skills to reproduce integrated NPP in the Arctic Ocean. The models were provided with two sources each of surface chlorophyll-a concentration (chlorophyll), photosynthetically available radiation (PAR), sea surface temperature (SST), and mixed-layer depth (MLD). The models were most sensitive to...
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    Article
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    ), 6508-6541. doi:10.1002/2015JC011018 10.1002/2015JC011018 John Wiley & Sons, Inc. Version of Record

  • Influence of varying upper ocean stratification on coastal near-inertial currents

    Creator:
    Kim, Sung Yong, Kurapov, Alexander L., and Kosro, P. Michael
    Abstract:
    The influence of varying horizontal and vertical stratification in the upper layer ( inline image m) associated with riverine waters and seasonal atmospheric fluxes on coastal near-inertial currents is investigated with remotely sensed and in situ observations of surface and subsurface currents and realistic numerical model outputs off the coast...
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    Article
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    ; Flagg, 1977; Crepon, 1969], demonstrating that stratification is a primary fac- tor controlling the near

  • Survival and growth patterns of white spruce (Picea glauca [Moench] Voss) rangewide provenances and their implications for climate change adaptation

    Creator:
    Lu, Pengxin, Parker, William H., Cherry, Marilyn, Colombo, Steve, Parker, William C., Man, Rongzhou, and Roubal, Ngaire
    Abstract:
    Intraspecific assisted migration (ISAM) through seed transfer during artificial forest regeneration has been suggested as an adaptation strategy to enhance forest resilience and productivity under future climate. In this study, we assessed the risks and benefits of ISAM in white spruce based on long-term and multilocation, rangewide provenance test data....
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    Article
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    ), 2360-2374. doi:10.1002/ece3.1100 10.1002/ece3.1100 John Wiley & Sons Ltd. Version of Record http

  • A multiscale climate emulator for long-term morphodynamics (MUSCLE-morpho)

    Creator:
    Antolínez, José Antonio A., Méndez, Fernando J., Camus, Paula, Vitousek, Sean, González, E. Mauricio, Ruggiero, Peter, and Barnard, Patrick
    Abstract:
    Interest in understanding long-term coastal morphodynamics has recently increased as climate change impacts become perceptible and accelerated. Multiscale, behavior-oriented and process-based models, or hybrids of the two, are typically applied with deterministic approaches which require considerable computational effort. In order to reduce the computational cost of modeling large spatial and...
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    Article
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    corresponding PCs (PC1(t), PC2(t), PC3(t) and PC4(t)) of the predic- tor, the PCs are standarized and the EOFs

  • The conservation genetics juggling act: integrating genetics and ecology, science and policy

    Creator:
    Haig, Susan M., Miller, Mark. P., Bellinger, Renee, Draheim, Hope M., Mercer, Dacey M., and Mullins, Thomas D.
    Abstract:
    The field of conservation genetics, when properly implemented, is a constant juggling act integrating molecular genetics, ecology, and demography with applied aspects concerning managing declining species or implementing conservation laws and policies. This young field has grown substantially since the 1980s following the development of polymerase chain reaction and now...
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    Article
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    The Authors. Evolutionary Applications published by John Wiley & Sons Ltd. This is an open access

  • A mathematical framework for analysis of water tracers: Part 1: Development of theory and application to the preindustrial mean state

    Creator:
    Singh, H. A., Bitz, C. M., Nusbaumer, J., and Noone, D. C.
    Abstract:
    A new matrix operator framework is developed to analyze results from climate modeling studies that employ numerical water tracers (WTs), which track the movement of water in the aerial hydrological cycle from evaporation to precipitation. Model WT output is related to the fundamental equation of hydrology, and the moisture flux...
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    Article
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    minimum at the equa- tor and tails on each poleward side approaching zero. The seasonal changes in~E and~P

  • Sewage pollution: mitigation is key for coral reef stewardship

    Creator:
    Wear, Stephanie L. and Thurber, Rebecca Vega
    Abstract:
    Coral reefs are in decline worldwide, and land-derived sources of pollution, including sewage, are a major force driving that deterioration. This review presents evidence that sewage discharge occurs in waters surrounding at least 104 of 112 reef geographies. Studies often refer to sewage as a single stressor. However, we show...
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    Article
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    - tor in habitat loss in marine ecosystems150,151 and to decreasing growth rates in many marine species

  • Efficient disruption and replacement of an effector gene in the oomycete Phytophthora sojae using CRISPR/Cas9

    Creator:
    Fang, Yufeng and Tyler, Brett M.
    Abstract:
    Phytophthora sojae is an oomycete pathogen of soybean. As a result of its economic importance, P. sojae has become a model for the study of oomycete genetics, physiology and pathology. The lack of efficient techniques for targeted mutagenesis and gene replacement have long hampered genetic studies of pathogenicity in Phytophthora species....
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    Article
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    AND JOHN WILEY & SONS LTD 1VC 20 1 5 T H E A U T H O R S . M O L E CU L A R P L AN T PA T H O LO G Y P

  • Evaluating Transportable Conversion Facilities for a Forest Biomass Supply Chain in the Pacific Northwest, USA

    Creator:
    Berry, Michael D.
    Abstract:
    This dissertation presents an analysis of transportable biomass conversion facility design to evaluate the conceptual and economic viability of a mobile and modular biomass conversion supply chain in the Pacific Northwest, USA. The main goal of this work is to develop a decision support system to more effectively and sustainably...
    Resource Type:
    Dissertation
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    : ______________________________________________________ John D. Sessions This dissertation presents an analysis of

  • Material development for thin-film transistors

    Creator:
    Archila, Kevin Alexander
    Abstract:
    The focus of this thesis is developing materials for thin-film transistors (TFTs). Cu₃SbS₄ is explored as p-channel layer. Cu₃SbS₄ TFTs show p-type, depletion-mode behavior with a small amount of gate-controlled modulation of the channel conductance. This behavior is consistent with Hall measurements indicating a mobility of 17 cm²V⁻¹s⁻¹ and hole...
    Resource Type:
    Masters Thesis
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    Transistors Abstract approved: John F. Wager The focus of this thesis is developing materials for thin-film

  • Design and Fabrication of a Public Locker for Non-Motorized Watercraft

    Creator:
    Cordisco, Jonathan
    Abstract:
    Visitors to waterways need a way to securely lock up their non-motorized watercrafts to allow for exploration of the local area and communities. The Willamette Water Trail Steering committee recognized this problem and approached the Oregon State University Prototype Development lab to develop and fabricate a solution. The engineering design...
    Resource Type:
    Honors College Thesis
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    Fabrication of a Public Locker for Non-Motorized Watercraft Abstract approved: John Parmigiani Visitors to

  • Amorphous multi-component metals as electrode materials

    Creator:
    Cowell, E. William
    Abstract:
    The objective of this thesis is to provide an initial demonstration of two-terminal and three-terminal electronic devices employing amorphous multi-component metallic film (AMMF) electrodes. Such a demonstration is successfully achieved in the fabrication of metal-insulator-metal (MIM) diode and hot electron transistor (HETs) structures employing ZrCuAlNi AMMF electrodes. The ultra-smooth surface...
    Resource Type:
    Masters Thesis
    Full Text:
    : Amorphous Multi-Component Metals as Electrode Materials. Abstract approved: John F. Wager The objective

  • Synthetic Lubricant Performance in Enclosed Gearbox Applications at Extreme Temperature

    Creator:
    Marr, Carter J.
    Abstract:
    The goal of this paper is to evaluate how synthetic lubricants perform in an enclosed gearbox application when compared with a proven mineral oil. This is in an effort to improve gearbox efficiency with the desired effect of lower emissions from of improved energy output from power generation. Four liquid...
    Resource Type:
    Masters Thesis
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    Lubricant Performance in Enclosed Gearbox Applications at Extreme Temperature Abstract approved: John

  • Improved Lubrication Performance of Chainsaw Cutting Systems

    Creator:
    Sellars, Patrick V.
    Abstract:
    Chainsaws serve as one of the primary tools used by logging corporations, ranches, and farms for forestry management. Lubricating oil remains one of the heaviest operational expenditures for chainsaws. This largely in part due to chainsaw lubrication being a total loss system in which nearly all lubricating oil applied is...
    Resource Type:
    Masters Thesis
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    Lubrication Performance of Chainsaw Cutting Systems. Abstract approved: John Parmigiani Chainsaws serve as

  • Electronic device and nanolaminate application of amorphous metal thin films

    Creator:
    Cowell, E. William, III
    Abstract:
    The objective of this dissertation is to develop amorphous metal thin films (AMTFs) for two-terminal electrical device and nanolaminate applications. Two AMTFs, ZrCuAlNi and TiAl, are investigated in both two-terminal electrical device and nanolaminate applications. Material properties including composition, atomic order, surface morphology, surface potential, and electrical resistivity are explored....
    Resource Type:
    Dissertation
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    : John F. Wager The objective of this dissertation is to develop amorphous metal thin films (AMTFs) for

  • Communication Styles Used by Male and Female Executives to Handle Conflict with Subordinates

    Creator:
    Rahmun, Lindsay
    Abstract:
    This study examines the self-reported behavior and ideals of a sample of upper level managers, in relation to conflict management with subordinates. A survey developed by the author, which measures directive and participative managerial behavior and ideals, was sent to a randomly selected sample of 250 female and 250 male...
    Resource Type:
    Masters Thesis
    Full Text:
    Executives to Handle Conflict with Subordinates. Abstract approved: 7) Redacted for Privacy John Keltner

  • Development of Amorphous Metal Thin Films for Thermal Inkjet Printing and Microelectronics

    Creator:
    McGlone, John M.
    Abstract:
    Due to a lack of grain boundaries, an amorphous metal thin film (AMTF) possesses advantageous mechanical properties and enhanced chemical stability that is potentially useful for thermal inkjet (TIJ) printing applications. The use of an AMTF as a TIJ resistor or cavitation plate could lead to a thinner TIJ cavitation...
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    Dissertation
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    AN ABSTRACT OF THE DISSERTATION OF John M. McGlone for the

  • Experimental characterization of saw chain cutting performance

    Creator:
    Otto, Andrew W.
    Abstract:
    Chainsaw users value cutting performance and safety. Knowledge of the forces exerted during sawing are necessary to understand and improve the cutting performance of saw chain. Additionally, cutting forces can be used to form metrics for evaluating performance tradeoffs when using a safety (i.e. low-kickback) saw chain versus a standard...
    Resource Type:
    Masters Thesis
    Full Text:
    : __________________________________________________________________ John P. Parmigiani Chainsaw users value cutting performance and safety. Knowledge of

  • Transparent electronics : thin-film transistors and integrated circuits

    Creator:
    Presley, Rick E.
    Abstract:
    This thesis focuses on two aspects of transparent electronics, SnO₂ transparent thin-film transistors (TTFTs) and transparent circuits. Both depletion- and enhancement-mode SnO₂ TTFTs are realized. The maximum effective mobility for the depletion- and enhancement-mode devices are 2 cm²V⁻¹s⁻¹ and 0.8 cm²V⁻¹s⁻¹, respectively. A variety of techniques to decrease the carrier...
    Resource Type:
    Masters Thesis
    Full Text:
    . Title: Transparent Electronics: Thin-Film Transistors and Integrated Circuits Abstract approved: John

  • Nontraditional amorphous oxide semiconductor thin-film transistor fabrication

    Creator:
    Sundholm, Eric Steven
    Abstract:
    Fabrication techniques and process integration considerations for amorphous oxide semiconductor (AOS) thin-film transistors (TFTs) constitute the central theme of this dissertation. Within this theme three primary areas of focus are pursued. The first focus involves formulating a general framework for assessing passivation. Avoiding formation of an undesirable backside accumulation layer...
    Resource Type:
    Dissertation
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    approved: John F. Wager Fabrication techniques and process integration considerations for amorphous

  • Ferroelectric thin film development

    Creator:
    Harman, Taran V.
    Abstract:
    The long-term goal of the research project initiated with this thesis is the development of lead-free, fully-transparent ferroelectric devices, such as ferroelectric capacitors or ferroelectric-gate field-effect transistors. Ferroelectric materials exhibit spontaneous polarization with the application of an external electric field, which is persistent upon removal of the applied field, and...
    Resource Type:
    Masters Thesis
    Full Text:
    : Ferroelectric Thin Film Development . Abstract approved: John F. Wager The long-term goal of the research

  • Characterization of solution-based inorganic semiconductor and dielectric materials for inkjet printed electronics

    Creator:
    Munsee, Craig L.
    Abstract:
    The long-term goal of this research project is the development of solution-based inorganic dielectric and semiconductor materials for inkjet printed electronics. The main focus of this thesis involves testing of the materials and devices under development. A new solution-based inorganic dielectric material (HfOSO₄), given the name hafsox, is developed and...
    Resource Type:
    Masters Thesis
    Full Text:
    capaci- tor over the frequency range from 100 Hz to 1 MHz................. 42 LIST OF FIGURES

  • Amorphous oxide semiconductors in circuit applications

    Creator:
    McFarlane, Brian Ross
    Abstract:
    The focus of this thesis is the investigation of thin-film transistors (TFTs) based on amorphous oxide semiconductors (AOSs) in two circuit applications. To date, circuits implemented with AOS-based TFTs have been primarily enhancement-enhancement inverters, ring oscillators based on these inverters operating at peak frequencies up to ~400 kHz, and two-transistor...
    Resource Type:
    Masters Thesis
    Full Text:
    : Amorphous Oxide Semiconductors in Circuit Applications Abstract approved: John F. Wager The focus of this

  • Development, fabrication, and characterization of transparent electronic devices

    Creator:
    Hoffman, Randy L.
    Abstract:
    The objective of this thesis is to provide an initial demonstration of the feasibility of constructing highly transparent active electronic devices. Such a demonstration is successfully achieved in the fabrication of ZnO-based thin film transistors (TFTs) exhibiting transparency greater than ~90% in the visible portion of the electromagnetic spectrum and...
    Resource Type:
    Masters Thesis
    Full Text:
    : Develonment. Fabrication, and Characterization of Transparent Electronic Devices. Abstract approved: John F

  • A novel method for zinc oxide nanowire sensor fabrication

    Creator:
    Pelatt, Brian D.
    Abstract:
    Interest in nanomaterials is motivated partly by their potential for sensor arrays to detect different gases. Nanowires in particular are of interest because their high surface-to-volume ratio promises the possibility of high sensitivity. However, because of their discrete quasi-one-dimensional geometry, electrical integration of nanowires into photolithographically defined devices and circuits...
    Resource Type:
    Masters Thesis
    Full Text:
    Novel Method for Zinc Oxide Nanowire Sensor Fabrication Abstract approved: John F. Conley, Jr

  • Assessment of High Mobility Oxide Thin-Film Transistors

    Creator:
    Stewart, Kevin A.
    Abstract:
    The trend towards higher resolution, faster refresh rate active-matrix liquid-crystal displays (AMLCDs) as well as the emergence of active-matrix organic light-emitting diode (AMOLED) displays is driving the demand for amorphous oxide semiconductor thin-film transistors (AOS TFTs) with higher mobility. A physics-based model for carrier transport in an amorphous semiconductor is...
    Resource Type:
    Dissertation
    Full Text:
    , 2017. Title: Assessment of High Mobility Oxide Thin-Film Transistors Abstract approved: John F

  • Al-In-Sn-O thin-film transistors

    Creator:
    Stewart, Kevin A.
    Abstract:
    The aim of the research undertaken for this thesis was to develop a new high-performance amorphous oxide semiconductor (AOS) for use as a channel layer in a thin-film transistor (TFT). AOS TFTs offer higher electron mobility than the established amorphous silicon based technology. A new channel material comprised of aluminum...
    Resource Type:
    Masters Thesis
    Full Text:
    presented on February 13, 2015. Title: Al-In-Sn-O Thin-Film Transistors Abstract approved: John F

  • Development of oxide semiconductors : materials, devices, and integration

    Creator:
    Chiang, Hai Q.
    Abstract:
    The aim of this dissertation is to develop oxide semiconductors by radio-frequency sputtering for thin-film transistor (TFT) applications. A variety of oxide semiconductors are used as the TFT channel layer, including indium gallium oxide (IGO), zinc tin oxide (ZTO), and indium gallium zinc oxide (IGZO). The variety of materials used...
    Resource Type:
    Dissertation
    Full Text:
    : John F. Wager The aim of this dissertation is to develop oxide semiconductors by radio-frequency

  • Oxide phosphors deposited by activated reactive evaporation for ACTFEL device applications

    Creator:
    Yokoyama, Tomoe
    Abstract:
    The goal of this thesis study is to develop an activated reactive evaporation (ARE) system and to demonstrate its utility by fabricating-alternating current thin-film electroluminescent (ACTFEL) oxide phosphor devices. ARE entails evaporation in an activated gas. The main ARE system components are three thermal evaporation sources, a microwave power supply,...
    Resource Type:
    Masters Thesis
    Full Text:
    Phosphors Deposited by Activated Reactive Evaporation for ACTFEL Device pp1ic Abstract approved: John F

  • p-type transparent electronics

    Creator:
    Valencia, Melinda Marie
    Abstract:
    The objective of this thesis is to contribute to the development of p-type materials for transparent electronics applications. Thin films of ®-BaCu2S2, a p-type semi-transparent semiconductor, are fabricated and characterized. ®-BaCu2S2 has a transmittance of 60% to 80 % in the visible portion of the electromagnetic spectrum. The mobility, conductivity,...
    Resource Type:
    Masters Thesis
    Full Text:
    , 2003. Title: p-Type Transparent Electronics. Abstract approved: John F. Wager The objective of this

  • Adaptive Movement Intent Decoding for Intuitive Control of Neuroprostheses

    Creator:
    George, Damon A.
    Abstract:
    Movement intent decoders, which interpret volitional movement intent from human bioelectric signals, can be incorporated into modern neuroprostheses to offer people living with limb loss or paralysis the potential to regain their lost motor control. Machine learning methods have become the research standard for continuous decoders with high degrees of...
    Resource Type:
    Masters Thesis
    Full Text:
    Decoding for Intuitive Control of Neuroprostheses Abstract approved: V John Mathews In the United States

  • Phase noise models for single-ended ring oscillators

    Creator:
    Godbole, Devavrata
    Abstract:
    The tremendous growth of wireless and mobile communications has resulted in placing of stringent requirements on the channel spacing and, by implication, on the phase noise of oscillators, typically mandating the use of passive LC oscillators with high quality factor (Q). However the trend towards large-scale integration and low cost...
    Resource Type:
    Masters Thesis
    Full Text:
    OSCILLATORS. Abstract approved: ___ q....t.- ___. John T. Stonick The tremendous growth of wireless and

  • Investigation of ultra-thin In-Ga-Zn-O thin-film transistors

    Creator:
    Chiang, Tsung-Han
    Abstract:
    The objective of the work reported herein is to explore the impact of decreasing channel thickness on radio-frequency (RF) sputtered amorphous indium-gallium-zinc oxide (a-IGZO) thin-film transistors (TFTs) electrical performance through the evaluation of drain current versus gate voltage (I[subscript D] − V[subscript G]) transfer curves. For a fixed set of...
    Resource Type:
    Masters Thesis
    Full Text:
    : Investigation of Ultra-thin In-Ga-Zn-O Thin-Film Transistors Abstract approved: John F. Wager The objective

  • A comparison of reverse- and forward-chaining instructional methods on a motor task with mentally retarded individuals

    Creator:
    Hsu, Pao-yin
    Abstract:
    The purpose of this study was to compare the reverse-chaining and forward-chaining instructional methods in teaching a motor task to mentally retarded individuals. The subjects were selected from Fairview Training Center, Salem, Oregon. Each of the subjects was classified as mentally retarded with a range from moderate to severe retardation....
    Resource Type:
    Dissertation
    Full Text:
    Individuals Abstract approved: Redacted for privacy gD . John M. Dunn The purpose of this study was to

  • Efficient digital predistortion techniques for power amplifier linearization

    Creator:
    Zhuo, Min
    Abstract:
    The importance of spectral efficiency in mobile communications often requires the use of non-constant-envelop linear digital modulation schemes. These modulation techniques carry signal information in both magnitude and phase, thus they must be linearly amplified to avoid nonlinear signal distortion which is not correctable in a typical receiver. A second...
    Resource Type:
    Masters Thesis
    Full Text:
    Techniques for Power Amplifier Linearization. Abstract approved: John T. Stonick The importance of

  • Learning algorithms for adapting the compliance of robotic limbs

    Creator:
    Aboufazeli, Mahtab
    Abstract:
    Motivation: Many robots such as legged robots and prosthetic hands/arms are designed to interact with uncertain and time-varying environments to accomplish their tasks. Observations on humans and animals during their daily tasks suggest that they adapt their leg compliance while traversing with different velocities on different grounds and adjust their...
    Resource Type:
    Dissertation
    Full Text:
    : V John Mathews Motivation: Many robots such as legged robots and prosthetic hands/arms are designed

  • Physical vapor deposition of novel thin-film solar absorbers

    Creator:
    Waters, Benjamin E.
    Abstract:
    Current leading thin-film solar cell technologies, i.e., cadmium telluride (CdTe) and copper indium gallium diselenide (CIGS), employ elements which are either toxic (Cd), or rare and/or expensive (In, Te, Ga, and Cd). The aim of this thesis is to investigate new, abundant, non-toxic p-type semiconductors for potential solar absorber application....
    Resource Type:
    Masters Thesis
    Full Text:
    : Physical Vapor Deposition of Novel Thin-Film Solar Absorbers Abstract approved: John F. Wager Current

  • The contribution of trade to on economic growth and productivity

    Creator:
    Khaodhiar, Suthikul
    Abstract:
    The relationship of openness, growth and total factor productivity is investigated empirically using panel regressions for 48 countries. This study tests a variety of openness measures, including the ratio of trade (exports plus imports), imports, exports and primary exports to GDP. We also study the effects of the interaction of...
    Resource Type:
    Masters Thesis

  • Electronic Conduction Mechanisms in Insulators

    Creator:
    Chiang, Tsung-Han
    Abstract:
    The research presented herein focuses on electrical assessment of oxide thin films as insulators. The current density-electric field (J-E) characteristics of four insulators of dramatically different electrical quality are assessed in terms of their operative electronic conduction mechanisms. Conduction in the two high-quality insulators is dominated by Ohmic conduction and...
    Resource Type:
    Dissertation
    Full Text:
    . Title: Electronic Conduction Mechanisms in Insulators Abstract approved: John F. Wager The research

  • Development of Cu-based Thin Films for Optoelectronic Applications

    Creator:
    Angelos, Gregory S.
    Abstract:
    CIGS and CdTe based commercial thin-film solar cells (TFSCs) require an absorber thickness greater than 2 µm and 4 µm, respectively, to adequately absorb the solar spectrum. To efficiently extract photoexcited electrons, these TFSCs require relatively defect-free absorbers with high-minority carrier mobility (> 100 cm2V−1s−1) and long lifetime (> 10...
    Resource Type:
    Dissertation
    Full Text:
    -based Thin Films for Optoelectronic Applications Abstract approved: John F. Wager CIGS and CdTe based

  • Fabrication and characterization of thin-film transistor materials and devices

    Creator:
    Hong, David
    Abstract:
    A class of inorganic thin-film transistor (TFT) semiconductor materials has emerged involving oxides composed of post-transitional cations with (n-1)d¹⁰ns⁰ (n≥4) electronic configurations. This thesis is devoted to the pursuit of topics involving the development of these materials for TFT applications: Deposition of zinc oxide and zinc tin oxide semiconductor layers...
    Resource Type:
    Dissertation
    Full Text:
    : Fabrication and Characterization of Thin-film Transistor Materials and Devices. Abstract approved: John F

  • Data-Driven Approaches For Decoding Volitional Movement Intent From Bioelectrical Signals

    Creator:
    Cunha Dantas, Henrique
    Abstract:
    There are nearly two million limb amputees living in the United States of America. Loss of limbs results in profound changes in one's life. However, the underlying neural circuitry and much of the ability to sense and control movements of their missing limb is retained even after limb loss. This...
    Resource Type:
    Dissertation
    Full Text:
    Abstract approved: V John Mathews There are nearly two million limb amputees living in the United States

  • Inorganic thin-film solar cells

    Creator:
    Spies, Jack Alexander
    Abstract:
    The primary objective of this thesis is to explore new absorber and p-type window layer materials for thin-film solar cell applications. A new thin-film electron beam deposition system has been installed, is now operational, and has been used to deposit several types of solar cell absorber layers. Material investigations include...
    Resource Type:
    Masters Thesis
    Full Text:
    : Inorganic Thin-Film Solar Cells Abstract approved: John F. Wager The primary objective of this thesis is

  • Development of high efficiency solar absorbers

    Creator:
    Ravichandran, Ram
    Abstract:
    Current cadmium telluride and copper indium gallium diselenide thin-film solar cells (TFSCs) utilize thick absorbers (2 - 4 μm). For efficient carrier extraction in these TFSCs, the absorber layer requires high carrier mobilities and a long minority carrier lifetime, which necessitates the use of a high purity, defect-free thin film....
    Resource Type:
    Dissertation
    Full Text:
    : Development of High Efficiency Solar Absorbers . Abstract approved: John F. Wager Current cadmium telluride

  • Low-cost deposition methods for transparent thin-film transistors

    Creator:
    Norris, Benjamin J.
    Abstract:
    The objective of this dissertation is to introduce low-cost processing methods for the fabrication of ZnO transparent thin-film transistors (TTFTs). A novel method for depositing ZnO body layers via spin-coating of a zinc nitrate-based spin solution is presented. The processing conditions of spin-coated ZnO are optimized to produce continuous and...
    Resource Type:
    Dissertation
    Full Text:
    . Title: Low-Cost Deposition Methods for Transparent Thin-Film Transistors. Abstract approved: John F

  • Manufacture and characterization of novel ACTFEL materials and devices

    Creator:
    Bender, Jeffrey P.
    Abstract:
    The aim of this dissertation is to develop non-traditional approaches to alternating-current thin-film electroluminescent (ACTFEL) device fabrication. ACTFEL technology suffers from a lack of adequately bright and efficient primary-color phosphors and cannot presently compete in the low-cost display market. Therefore the research presented in this dissertation focuses on an exploration...
    Resource Type:
    Dissertation
    Full Text:
    : Manufacture and Characterization of Abstract approved. John F/Wager The aim of this dissertation is to