A. James Clark School of Engineering

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The collections in this community comprise faculty research works, as well as graduate theses and dissertations.

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    Assessing the Cost of Risk for New Technology and Process Insertion
    (2013) Lillie, Edwin Thomas; Sandborn, Peter; Mechanical Engineering; Digital Repository at the University of Maryland; University of Maryland (College Park, Md.)
    Adoption and insertion of new technologies and processes into systems is inherently risky. A cost model that forecasts the cost of risk associated with inserting new technology into a system has been developed. The model projects the cost of inserting new processes, projects the impact of the processes on the cost of risk for the system, and performs a cost-benefit analysis on the adoption of proposed new processes. The projected cost of failure consequences (PCFC) is defined as the cost of all failure events (of varying severity) that are expected to occur over the service life of the system. The PCFC is uncertain, and the potential positive impact of adopting new technologies into the system is to reduce the cost of risk and/or reduce its uncertainty. A case study that assesses the adoption of a lead-free solder control plan into systems that previously used tin-lead solder has been performed.
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    The Full Marginal Cost of Vehicle Travel on US Roadways
    (2011) Ferrari, Nicholas Joseph; Zhang, Lei; Civil Engineering; Digital Repository at the University of Maryland; University of Maryland (College Park, Md.)
    In this research, models primarily based on the Highway Economic Requirements System (HERS) are retrofitted to calculate six component marginal costs: Safety, Travel Time, Vehicle Operations, Agency, Emissions, and Noise. Each of these marginal costs is separately obtained for both peak and off-peak periods for seven different vehicle types. By combining these component costs, the true marginal cost to society of each vehicle is obtained for each roadway segment reported in the Highway Performance Monitoring System. This full marginal cost can be applied in future policy analysis in defining appropriate vehicle miles traveled (VMT) fee structures. In addition to calculating segment marginal costs, this report conducts a section level revenue analysis that compares the revenue generated by the current gas tax system employed by the United States versus a revenue system based on vehicle mile fees developed from marginal vehicle cost analyses.