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Filtering by: Creator Collins, Lee Remove constraint Creator: Collins, Lee Degree Field Civil Engineering Remove constraint Degree Field: Civil Engineering

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  • A linkage finite element for nailed composite wood I-Beams and T-Beams

    Creator:
    Lee, Chyuan-shen
    Abstract:
    With current nonlinear analysis computer capabilities, this study was conducted to develop a linkage element that permits analyses of wood composite structures taking into account possible slip in the nailed joints. The finite elements chosen to represent the wood stud, plywood, gypsum and nails are described. The method as applied...
    Resource Type:
    Masters Thesis
    Full Text:
    and T-Beams AN ABSTRACT OF THE THESIS OF Chyuan-Shen Lee for the degree of Master of Science in

  • Anaerobic reductive dechlorination of TCE and TCFE in TCE contaminated sediments : enhanced bioremediation and bioaugmentation

    Creator:
    Lee, Jae-Hyuk
    Abstract:
    This research focused on the enhanced reductive dechlorination of trichloroethene (TCE) and its surrogate, trichlorofluoroethene (TCFE), using two bioremediation methods in anaerobic conditions. Two anaerobic bioremediation studies were conducted to investigate the effects of microbial communities in the presence of different electron acceptors and donors during anaerobic reductive dechlorination of...
    Resource Type:
    Dissertation
    Full Text:
    DISSERTATION OF Jae-Hyuk Lee for the degree of Doctor of Philosophy in Civil Engineering presented on May

  • A composite-beam finite element for seismic analysis of wood-framed buildings

    Creator:
    Lee, Chyuan-shen
    Abstract:
    A computer program called SAPWOOD which possesses the capability of performing linear or nonlinear, static or dynamic response including seismic excitation for wood-framed buildings with semirigid connection systems is presented in this study. Program SAPWOOD is a modification of the program NONSAP by adding new elements such as a linkage...
    Resource Type:
    Dissertation
    Full Text:
    wood-framed buildings AN ABSTRACT OF THE THESIS OF Chyuan-Shen Lee for the degree of Doctor of

  • Metal and organic emissions from RDF and large volume contributor combustion

    Creator:
    Lee, Taejin, 1961-
    Abstract:
    The use of municipal refuse (RDF) as fuels has received widespread attention for reason of its energy equivalence and the increasing lack of available landfill sites. The principal obstacle to the construction of combustion facilities is that RDF produces toxic compounds, including heavy metals and such organic compounds as PCDD...
    Resource Type:
    Masters Thesis
    Full Text:
    Contributor Combustion AN ABSTRACT OF THE THESIS OF Taejin Lee for the degree of Master of Science in Civil

  • Framework for Measuring Construction Project Performance using Energy

    Creator:
    Nnaji, Chukwuma A.
    Abstract:
    Over the years, the performance of construction projects has been a main source of concern given the percentage of a project cost associated with poor project performance. As a result of the growing clamor to improve the output of the built industry, comprehensive studies have been conducted to examine the...
    Resource Type:
    Masters Thesis
    Full Text:
    growing and developing under his tutelage. I am grateful to Dr. Chris Lee for helping and guiding

  • New Simulation and Fusion Techniques for Assessing and Enhancing UAS Topographic and Bathymetric Point cloud Accuracy

    Creator:
    Slocum, Richard K.
    Abstract:
    Imagery acquired from unmanned aircraft systems (UAS) and processed with structure from motion (SfM) – multi-view stereo (MVS) algorithms provides transformative new capabilities for surveying and mapping. Together, these new tools are leading to a democratization of airborne surveying and mapping by enabling similar capabilities (including similar or better accuracies,...
    Resource Type:
    Dissertation
    Full Text:
    Glennie, Dr. Mark Lee, Dr. Michael Olsen, and Dr. Jamon Van Den Hoek, for their feedback, comments, and

  • Sand waves in a pristine estuary

    Creator:
    Baliga, B. R. (B. Ravindranath)
    Abstract:
    The stochastic and the Fourier theories for sand waves developed by Lee(11) and Hino(6), respectively, for unidirectional flows are extended in order to estimate the rate of sediment turnover (RST) under oscillatory flows in the South Slough estuary, Coos Bay, Oregon. Data were collected by a mechanical and a sonic...
    Resource Type:
    Masters Thesis
    Full Text:
    stochastic and the Fourier theories for sand waves developed by Lee(11) and Hino(6), respectively, for

  • Analysis of diagonally cracked conventionally reinforced concrete girders in the service load range

    Creator:
    Robelo, Melissa J.
    Abstract:
    Performance evaluation of conventionally reinforced concrete (CRC) bridge superstructure elements with diagonal cracks is of interest to the bridge engineering community. Standardized methods to predict service-level stress magnitudes in cracked bridge girders under combined bending and shear forces are not available. An analysis procedure was developed to determine the response...
    Resource Type:
    Masters Thesis
    Full Text:
    students on the ODOT project. In particular I would like to thank Tanarat Potisuk, Aeyoung Lee, and

  • Evaluation of polymer modified asphalt in hot mix pavements

    Creator:
    Ifft, Charles
    Abstract:
    Polymer modified asphalts have recently been the focus of much attention in the U.S. due to claims that polymer additives will lengthen the life of an asphalt pavement. Much of the published research on this topic has been concentrated on the effects of polymer modifiers on binder and mixture properties....
    Resource Type:
    Masters Thesis
    Full Text:
    (Shuler 1987; Lee and Demirel 1987; King, Muncy and Prudhomme 1986; Krivohlavek 1988; and Collins 1986

  • Electron donor and chlorinated ethene effects on activity and community composition in anaerobic reductively dechlorinating consortia

    Creator:
    Sabalowsky, Andrew R.
    Abstract:
    This research focused on anaerobic transformation of trichloroethene (TCE), a groundwater contaminant. The mixed anaerobic Evanite culture (EV) was studied to determine community behavior and composition responses to different electron donors and chloroethene electron acceptors. The potential toxicity from high concentrations of TCE and its daughter product cis-1,2-dichloroethene (cDCE) was...
    Resource Type:
    Dissertation
    Full Text:
    ., 2003; Lee at al., 2007). Therefore, a mixed anaerobic consortium is required to achieve complete