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  • A hazardous-inspection model with costly repair

    Creator:
    Yang, Minghui
    Abstract:
    An inspection-repair model is developed that presumes inspection is hazardous to the system being inspected. The form of the optimal inspection-repair policy is determined for different ranges of the model's parameters. The model is formulated as a partially observable Markov decision process with finite numbers of states and actions. The...
    Resource Type:
    Dissertation
    Full Text:
    A hazardous-inspection model with costly repair AN

  • Reliability centered prediction technique for diagnostic modeling and improvement

    Creator:
    Murphy, Michael D., 1965-
    Abstract:
    Design phase decisions based on diagnosability lead to lower system costs and, in turn, higher quality products by means of reducing maintenance time and increasing system reliability. A case for diagnosability is presented. Functions of diagnosability are expounded upon including life cycle costs, statistical analysis, and design criterion to emphasize...
    Resource Type:
    Masters Thesis
    Full Text:
    knowledge and experience. Regardless of the specific parameter, if the mathematical model of a statistical

  • The plume model for large utility scale atmospheric fluidized bed combustors

    Creator:
    Park, Dalkeun
    Abstract:
    The atmospheric fluidized bed combustor (AFBC) is an alternative to the pulverized coal burner. The size of a utility scale AFBC would be enormous so that the use of large particles is necessary to reduce its size. In modeling the combustion of coal and capture of sulfur released from the...
    Resource Type:
    Dissertation
    Full Text:
    The plume model for large utility scale atmospheric

  • Critical evaluation of Ouyang's model reduction method

    Creator:
    Jia, Zuxin
    Abstract:
    A model reduction method for stable, linear, time-invariant, continuous systems is critically studied. This method, proposed by Prof. Ouyang, is based on the concept of power dispersion and the least-squared estimation technique. The reduced models obtained by this method retain the stability of the stable, high order original systems and...
    Resource Type:
    Masters Thesis
    Full Text:
    Engineering presented on June 9, 1989. Title: Critical Evaluation of Ouyang's Model Reduction Method

  • Wave interaction with rubble mound structures

    Creator:
    Yoo, Chul-hee
    Abstract:
    The objective of this study is the development and verification of an analytical solution for an unsteady flow field partially occupied by a permeable structure. Flow is induced by a small amplitude incident wave train and the permeable structure may contain multilayered anisotropic but homogeneous material. The analytical solution developed...
    Resource Type:
    Masters Thesis
    Full Text:
    application of simplified mathematical models. In 1985, Kobayashi and Jacobs developed a mathematical model

  • Decentralized control of a cable-stayed beam structure

    Creator:
    Volz, Patrick U.
    Resource Type:
    Masters Thesis
    Full Text:
    Master of Science in Electrical and Computer Engineering presented on May 5, 1995. Title: Decentralized

  • Identification of structural parameters and hydrodynamic effects for forced and free vibration

    Creator:
    Kruchoski, Brian L. (Brian Louis)
    Abstract:
    Statistically-based estimation techniques are presented in this study. These techniques incorporate structural test data to improve finite element models used for dynamic analysis. Methods are developed to identify optimum values of the parameters of finite element models describing structures. The parameters which may be identified are : element area, mass...
    Resource Type:
    Dissertation
    Full Text:
    mathematical model of the structure is generated and is solved by computer to predict the response to a

  • Machine learning in engineering : techniques to speed up numerical optimization

    Creator:
    Cerbone, G. (Giuseppe)
    Abstract:
    Many important application problems in engineering can be formalized as nonlinear optimization tasks. However, numerical methods for solving such problems are brittle and do not scale well. For example, these methods depend critically on choosing a good starting point from which to perform the optimization search. In high-dimensional spaces, numerical...
    Resource Type:
    Dissertation
    Full Text:
    artifact and, in most engineering tasks, it is a science founded on well-established mathematical

  • Burnup dependent neutron flux and heat source distribution in sphere-pac mixed carbide fuels

    Creator:
    Robinson, Cheryl A.
    Abstract:
    Through a joint effort by the Swiss Federal Institute for Reactor Research and Oregon State University, the fuels modeling code SPECKLE is being developed to model sphere-pac mixed carbide nuclear fuel. Major parameters, such as fission gas release, fuel restructuring phenomena, and the temperature and porosity distributions in the fuel...
    Resource Type:
    Masters Thesis
    Full Text:
    of Master of Science in Nuclear Engineering presented on July 6, 1981 Title: Burnup Dependent

  • Aseismic performance of a cable-stayed structure with decentralized H[infinity] control

    Creator:
    Chńg, Guan B.
    Abstract:
    The dissertation uses state-of-the-art structural engineering theories, in parallel with the modern and still-developing control theory of electrical engineering to mitigate the vibratory responses of a double-stayed bridge subjected to strong earthquake ground motions. First, a nonlinear finite element model of the double-stayed bridge subjected to non-uniform (multi-support) earthquake excitations...
    Resource Type:
    Dissertation
    Full Text:
    , and methods and approaches used to obtain the described mathematical model and response are