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  • Diagnostic modeling and diagnosability evaluation of mechanical systems

    Creator:
    Clark, Garrett E.
    Abstract:
    Consideration of diagnosability in product design promises to increase product quality by reducing maintenance time without increasing cost or decreasing reliability. Methods for investigating the diagnosability of mechanical and electro-mechanical systems are described and are applied to the Bleed Air Control System (BACS) on the Boeing 747-400. The BACS is...
    Resource Type:
    Masters Thesis
    Full Text:
    ) Detectability is a measure of the time that passes before the fact that a failure exists is recognized

  • Survival analysis in fishery management

    Creator:
    Kim, Sung-u
    Abstract:
    Economic methodology is revisited to address issues in fishery management, and survival analysis is suggested as an analytical tool to solve the uncertainty problem in evolutionary economics. Survival analysis can clarify in statistical terms the impacts of fishery regulation and economic and biological changes on the fisherman's final decisions of...
    Resource Type:
    Dissertation
    Full Text:
    important role in analyzing lifetime or survival time (or failure time ) data in biology, biomedicine

  • An application of regression tree methodology in freeway travel time estimation using speed as a proxy

    Creator:
    Wang, Lijuan
    Abstract:
    Accurate freeway travel time estimation is of increasing importance for the travelers’ information and route guidance system. A non-parametric statistical methodology known as regression trees is deployed in this research for dynamically and accurately estimating freeway travel times for the I5-I205 loop in the Portland Metro area of Oregon using...
    Resource Type:
    Masters Thesis
    Full Text:
    of historical travel time data on PORTAL (Portland Oregon Regional Transportation Archive Listing

  • Physical activity recognition of free-living data using change-point detection algorithms and hidden Markov models

    Creator:
    Anderson, Michael M.
    Abstract:
    Physical activity recognition using accelerometer data is a rapidly emerging field with many real-world applications. Much of the previous work in this area has assumed that the accelerometer data has already been segmented into pure activities, and the activity recognition task has been to classify these segments. In reality, activity...
    Resource Type:
    Masters Thesis
    Full Text:
    to be applied to ”free-living” data, which is collected over a long, continuous time period and would

  • Measuring efficiency and explaining failures in banking : application to the Russian banking sector

    Creator:
    Konstandina, Natalia V.
    Abstract:
    This study has two main objectives. First, we propose an alternative way for treating deposits in modeling a banking firm, which account for both their input and output features. Second, we contribute to modeling failures in the banking sector by distinguishing three groups of factors affecting failures: bank level, industry...
    Resource Type:
    Dissertation
    Full Text:
    models to a data set of Russian banks, spanning 1999-2004. Traditionally researchers assumed that