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  • An empirical study on the process of mechanical design

    Creator:
    Stauffer, Larry A.
    Abstract:
    An information processing model of the problem-solving performance of mechanical designers is presented for four design tasks: conceptual assembly design, layout component design, detail component design, and catalog selection. These tasks are organized into six kinds of segments called episodes, which describe the goal structure of the designer while performing...
    Resource Type:
    Dissertation
    Full Text:
    ABSTRACT OF THE THESIS OF Larry A, Stauffer for the degree of Doctor of Philosophy in Mechanical

  • Turbulence in the nocturnal boundary layer with light and variable winds

    Creator:
    Mahrt, L., Richardson, Scott, Seaman, Nelson, and Stauffer, David
    Abstract:
    Turbulence quantities are analyzed from nine months of data collected on the floor of a valley where nocturnal cold pools are frequent. Often the speed of the vector-averaged wind over the night is less than 0.5 m s−1 (near-calm winds) with no preference for wind direction. The quantity of such...
    Resource Type:
    Article
    Full Text:
    * Scott Richardson,b Nelson Seamanb and David Staufferb aCOAS, Oregon State University, Corvallis, OR, USA

  • Numerical Prediction of Submesoscale Flow in the Nocturnal Stable Boundary Layer over Complex Terrain

    Creator:
    Seaman, Nelson L., Gaudet, Brian J., Stauffer, David R., Mahrt, Larry, Richardson, Scott J., Zielonka, Jeffrey R., and Wyngaard, John C.
    Abstract:
    Numerical weather prediction models often perform poorly for weakly forced, highly variable winds in nocturnal stable boundary layers (SBLs). When used as input to air-quality and dispersion models, these wind errors can lead to large errors in subsequent plume forecasts. Finer grid resolution and improved model numerics and physics can...
    Resource Type:
    Article
    Full Text:
    DAVID R. STAUFFER Department of Meteorology, The Pennsylvania State University, University Park

  • Optimization of feeding schedules for coho salmon in the hatchery environment

    Creator:
    Corey, Philip David
    Abstract:
    A growth model is developed for coho salmon which accounts for temperatures and feeding rates typically encountered in fish hatchery operation. Feeding rates utilized by the model ranged from maintenance to maximum utilizable rations. The model is derived from an empirical equation for maximum growth rate, and a theoretical equation...
    Resource Type:
    Dissertation
    Full Text:
    Salmon in the Hatchery Environment Redacted for privacy Abstract approved: David A. Bella A growth

  • An architecture for a function driven mechanical design solution library

    Creator:
    Wood, Stephen L.
    Abstract:
    The engineering design process and the advancement of future computer-aided-design systems need new design aids to be used during the conceptual design phase. This design phase is where information gathering and understanding of the problem are developed, analyzed and broken into small more manageable elements. These elements consist of customer...
    Resource Type:
    Dissertation
    Full Text:
    Driven Mechanical Design Solution Library. Abstract approved: Dr. David Ullman The engineering

  • Life in railroad logging camps of the Shevlin-Hixon Company, 1916-1950

    Creator:
    Gregory, Ronald L.
    Abstract:
    Remnants of railroad logging camps, and their associated features, are perhaps some of the most common archaeological resources found on public lands in the Pacific Northwest. Many camps have already been located, their cultural materials inventoried, and networks of logging railroad grades mapped. Yet, despite these efforts, little can be...
    Resource Type:
    Masters Thesis
    Full Text:
    Logging Camps of the Shevlin-Hixon Company. 1916-1950. Abstract approved David Brauner Remnants of

  • A computer-based design history tool

    Creator:
    Chen, Ai-hua
    Abstract:
    In current practice, design documentation often fails to support the activities of design understanding, communication, and redesign. A Design History Tool has been developed to improve current design documentation. This tool is a computerized design history that represents and plays back important information generated during the process of designing a...
    Resource Type:
    Dissertation
    Full Text:
    approved: David G. Ullman In current practice, design documentation often fails to support the activities

  • Mechanical design history content : the information requests of design engineers

    Creator:
    Kuffner, Tom A.
    Abstract:
    This thesis reports on research conducted to determine the information which should be included in a mechanical design history. This is part of a larger research effort aimed at developing a computer tool for storing and replaying mechanical design history information. Three question-asking protocols were conducted to determine what information...
    Resource Type:
    Masters Thesis
    Full Text:
    : The Information Requests of Design Engineers Abstract Approved: Redacted for Privacy David G

  • The effects of harvesting Pacific hake (Merluccius productus) on the offshore community : the results of a multi-species model

    Creator:
    Gartz, Russell G.
    Abstract:
    The effects of harvesting Pacific hake (Merluccius productus) were examined with a multi-species numerical model composed of seven logistic growth equations coupled by a food web. The food web was composed of: California sea lions (Zalophus californianus), hake, sablefish (Anaplopoma fimbria), spiny dogfish (Squalus acanthias), a generic rockfish species (Sebastes...
    Resource Type:
    Masters Thesis
    Full Text:
    . stract approved: David B. Sampson The effects of harvesting Pacific hake (Merluccius product us) were

  • Oxygen consumption by Dendroctonus pseudotsugae Hopkins

    Creator:
    King, Keith Irl
    Abstract:
    Oxygen uptakes of Douglas-fir beetles collected during November 1969 through April 1970 were measured at different experimental temperatures. The oxygen uptakes of adult beetles increased at each experimental temperature as the seasons progressed from winter to spring. The larval and pupal Douglas-fir beetles, collected in February 1970, had lower oxygen...
    Resource Type:
    Masters Thesis
    Full Text:
    . David H. Milne Oxygen uptakes of Douglas-fir beetles collected during November 1969 through April 1970