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Filtering by: Creator Tomas, Robert A. Remove constraint Creator: Tomas, Robert A. Degree Field Civil Engineering Remove constraint Degree Field: Civil Engineering

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  • Dynamics of the nearshore wave bottom boundary layer

    Creator:
    Foster, Diane Lyn
    Abstract:
    This thesis presents an examination of the nearshore wave bottom boundary layer under conditions of significant sediment response. Using both field observations and simple models, the response of the bottom boundary layer to random waves is shown to have a complex behavior. First, the linearized wave bottom boundary layer governing...
    Resource Type:
    Dissertation
    Full Text:
    : Robert A. A olinan This thesis presents an examination of the nearshorewave bottom boundary layer under

  • Summertime water temperature trends in Steamboat Creek Basin, Umpqua National Forest

    Creator:
    Holaday, Steven A.
    Abstract:
    The Steamboat Creek basin drains 227 mi² (588 km²) of steep forested terrain into the North Umpqua River of Southwest Oregon, 39 mi (63 km) northeast of Roseburg. Summer base flows for Steamboat Creek average 83 cfs (2.35 m³/sec). Steamboat Creek and its tributaries are considered important to the production...
    Resource Type:
    Masters Thesis

  • Chaos in a long rectangular wave channel

    Creator:
    Bowline, Cynthia M.
    Abstract:
    The Melnikov method is applied to a model of parametrically generated cross-waves in a long rectangular channel in order to determine if these cross-waves are chaotic. A great deal of preparation is involved in order to obtain a suitable form for the application of the Melnikov method. The Lagrangian for...
    Resource Type:
    Dissertation
    Full Text:
    presented on November 24. 1993. Title: Chaos in a Long Rectangular Wave Channel Abstract approved: Robert

  • 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:
    IN A PRISTINE ESTUARY Abstract approved: Redacted for Privacy Dr. Robert T. Hudspeth The

  • Development of a priority rating system for highway safety improvements

    Creator:
    Iranitalab, Farhad
    Abstract:
    This thesis presents the procedure adopted to develop the priority rating system for highway safety improvements. Safety hazards are classified into four categories: (1) Railroad crossings, (2) Intersections, (3) Geometric-Related Hazards, and (4) Roadside Hazards. For each category of hazards, relationships are developed to obtain a hazard index and expected...
    Resource Type:
    Masters Thesis
    Full Text:
    Development of a Priority Rating System for Highway Safety

  • Establishing a through-boring pattern and method of test for utility poles

    Creator:
    Elkins, Lori A.
    Abstract:
    The goal of this study was to optimize a through-boring pattern that will provide adequate preservative penetration while minimizing the reduction in overall pole bending strength. Hole spacing was developed using longitudinal and transverse chemical penetration data from previous studies. Finite element analysis was used as a preliminary assessment tool...
    Resource Type:
    Masters Thesis
    Full Text:
    a Through-borinq Pattern and Method of Test for Utility Poles Abstract Approved: Robert J

  • Sediment transport in a gravel-bottomed stream

    Creator:
    Milhous, Robert T.
    Abstract:
    Sediment transport in a gravel-bottomed stream located in the Oregon Coast Range was studied to determine the effects of a single layer of large particles (the armour layer) located at the surface of the bed material. The bed load transport system was studied jointly with suspended sediment transport to understand...
    Resource Type:
    Dissertation
    Full Text:
    . Sediment Transport in a Gravel-Bottomed Stream by Robert Thurlow Milhous A THESIS submitted to Oregon

  • Indirect parameter identification algorithm in radial coordinates for a porous medium

    Creator:
    Roley, Kenneth L.
    Abstract:
    The decision to bury high level nuclear wastes in deep geological formations led to the study of the Hanford Nuclear Reservation as one of three possible sites for the first nuclear waste repository in the United States. To adequately evaluate the environmental impact of siting nuclear waste repositories in basalt...
    Resource Type:
    Masters Thesis
    Full Text:
    Algorithm in Radial Coordinates for a Porous Medium Redacted for Privacy Abstract approved:. Robert T

  • 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

  • Slotted-bolted friction damper as a seismic energy dissipator in a braced timber frame

    Creator:
    Tjahyadi, Alfred
    Abstract:
    Friction dampers have been used successfully to dissipate seismic energy in steel and concrete structures. The application is new to timber structures. The objectives of this research were to design a slotted bolted connection (SBC) and evaluate its potential as a passive energy damper in timber brace. The research was...
    Resource Type:
    Masters Thesis
    Full Text:
    Friction Damper as a Seismic Enerciv Dissipator in a Braced Timber Frame. Abstract approved: Friction