Search Constraints

Start Over
Filtering by: Creator Whitman, L. D. Remove constraint Creator: Whitman, L. D. Degree Field Civil Engineering Remove constraint Degree Field: Civil Engineering Non-Academic Affiliation Oregon State University. Graduate School Remove constraint Non-Academic Affiliation: Oregon State University. Graduate School

Search Results

  • Multi-objective Optimization of Reservoir Operation Under Uncertainty with Robust and Flexible Decision Variables

    Creator:
    Hosseini, Parnian
    Abstract:
    Optimization of reservoir operation is involves various competing objectives for a scarce resource (water). To find the optimal operation of reservoirs, it is essential to consider multiple objectives simultaneously. There are various sources of uncertainty associated with the reservoir operation problem that should be considered as well. The overarching goal...
    Resource Type:
    Dissertation
    Full Text:
    Arturo S. Leon, Nathan L. Gibson Optimization of reservoir operation is involves various

  • Roughness and geometry effects of engineered log jams on 1-D flow characteristics

    Creator:
    Valverde, Rachelle S.
    Abstract:
    The re-introduction of large woody debris (LWD) into streams and rivers for stream restoration purposes is rapidly growing. Engineered log jams (ELJs) are man-made structures intended to mimic natural LWD structures, designed and installed to protect stream banks from erosion while increasing habitat diversity. Several studies have evaluated the flow...
    Resource Type:
    Masters Thesis
    Full Text:
    Environmental Consultants 2006; Whitman n.d.) report water surface elevation results of using 1-D numerical

  • The development of a gas-permeable-membrane-supported (GPMS) biofilm reactor for the combined anaerobic/aerobic treatment of polychlorinated biphenyls

    Creator:
    Polonsky, Jon D.
    Abstract:
    A continuous flow, gas-permeable-membrane-supported (GPMS) biofilm reactor was developed to facilitate the treatment of polychlorinated biphenyls (PCBs). The GPMS biofilm reactor consisted of a cylindrical glass vessel made up of three compartments: the gas, liquid and headspace compartments. A gas-permeable membrane separated the bottom gas compartment from the liquid compartment....
    Resource Type:
    Masters Thesis
    Full Text:
    Monochlorobiphenyls and Biphenyl in River Water. Environ. Sci. Technol. 17:617-620. 5. Bedard, D. L., R. Unterman, L

  • Modeling hydraulic dredge spoil fate

    Creator:
    Tseng, Ying-chuan
    Abstract:
    Hydraulic dredging is and most certainly will remain a primary means of maintaining and improving ship channels and for land reclamation in near-shore water. The study of which this thesis describes a part is intended to develop a method of predetermining the immediate disposition of sand spoils from hydraulic dredging...
    Resource Type:
    Masters Thesis
    Full Text:
    . L. Schroeder Hydraulic dredging is and most certainly will remain a primary means of maintaining

  • 3-D finite element modeling in OpenSees for bridge live-load girder distribution factors

    Creator:
    Scoggins, Luke A.
    Abstract:
    A generalized, three-dimensional, finite element bridge model was created in order to efficiently and accurately assess live-load girder distribution factors for a variety of bridge types. This model shortens the time required by bridge analysts to develop individual finite element models for bridges of varying geometries. The creation of the...
    Resource Type:
    Masters Thesis
    Full Text:
    22, 2007. Title: 3-D Finite Element Modeling in OpenSees for Bridge Live-Load Girder Distribution

  • A procedure to identify and evaluate forest arterial and collector road networks

    Creator:
    Kehr, Richard H.
    Abstract:
    This thesis presents a procedure to identify and evaluate forest arterial and collector networks. The procedure identifies those decision criteria important in evaluating both the arterial and collector networks and the specific facilities identified on these networks. The procedure incorporates the decision criteria and results from network and facility analysis...
    Resource Type:
    Masters Thesis
    Full Text:
    Networks. Redacted for Privacy Abstract Approved: Robert D. Elton This thesis presents a procedure to

  • Measurement of the rates of reductive dechlorination of chlorinated phenols

    Creator:
    Nicholson, David K.
    Abstract:
    Knowledge of a compound's degradation pathway is crucial to the assessment of risk at contaminated sites. Pentachlorophenol and its metabolic products can serve as model compounds to study the fate and transport of halogenated aromatic compounds in the environment. Acclimation of anaerobic sewage sludge to pentachlorophenol produced a microbial consortium...
    Resource Type:
    Masters Thesis
    Full Text:
    I would like to gratefully acknowledge the help of my advisor, Dr. Sandra L. Woods, and the other

  • Evaluation of water damage on asphalt concrete mixtures using the environmental conditioning system

    Creator:
    Al-Joaib, Ali Abdulla
    Abstract:
    Asphalt concrete pavement is subjected to several damaging actions from traffic loads, water (from precipitation and/or groundwater sources), and temperature. The durability of the asphalt-aggregate mixture, its ability to withstand these damaging actions for long periods, is a very important engineering property. While the durability of the asphalt-aggregates mixture depends...
    Resource Type:
    Dissertation
    Full Text:
    : Dr. Ronald L. Terrel Asphalt concrete pavement is subjected to several damaging actions from traffic

  • Stress-strain-time relations for a compacted residual soil

    Creator:
    Khuayjarernpanishk, Thanasarn
    Resource Type:
    Masters Thesis
    Full Text:
    approved: Dr. W. L. Schroeder The directional nature of the stress-strain-time relationship was

  • Influence of expansive soils on structures in the Eugene area

    Creator:
    Bonell, John Alexander
    Abstract:
    Expansive soils in Eugene, Oregon present a problem to residents, consultants, contractors, and the city government. During the years 1977 to 1979, the nature and extent of the problem was identified, including an outline of the local occurrence of expansive soils and possible engineering solutions to the most often encountered...
    Resource Type:
    Masters Thesis
    Full Text:
    approved: Redacted for Privacy Dr. W. L. Schroeder Expansive soils in Eugene, Oregon present a problem to