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We introduce a new asynchronous parallel pattern search (APPS). Parallel pattern search can be quite useful for engineering optimization problems characterized by a small number of variables (say, fifty or less) and by objective functions that are expensive to evaluate, such as those defined by complex simulations that can take anywhere from a few seconds(More)
Optimization software is commonly used to solve simulation-based problems such as optimal design and control, model parameter estimation, and best/worst-case scenario identification. While the value of such software is widely recognized, user feedback indicates that these tools are difficult for non-experts to use. In particular, users are unfamiliar with(More)
Sandia is a multiprogram laboratory operated by Sandia Corporation, NOTICE: This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government, nor any agency thereof, nor any of their employees, nor any of their contractors, subcontractors, or their employees, make any warranty,(More)
A survey of the levels of 3-monochloropropane-1,2-diol (3-MCPD) in a range of selected food products available in the UK is reported. The survey was carried out on behalf of the Food Standards Agency (FSA) to identify the food groups that might provide a significant contribution to 3-MCPD exposure from the diet. Three hundred samples comprising meat, dairy,(More)
The study's objective was to survey what and how psychiatry residents want to learn about ethics during residency. A 4-page questionnaire developed for this study was sent to 305 residents at 10 adult psychiatry programs in the United States. One-hundred and eighty-one (59%) of those surveyed responded. Seventy-six percent reported facing an ethical dilemma(More)
Neither the United States Government, nor any agency thereof, nor any of their employees, nor any of their contractors, subcontractors, or their employees, make any warranty, express or implied, or assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, OI process disclosed, or(More)
–This paper addresses a national interest in investigating the potential of displacing a large fraction of U.S. gasoline use by 2030 with ethanol. This study assesses the feasibility, implications, limitations, and enablers of producing 90 billion gallons ethanol per year by 2030. We developed a dynamic supply chain model, the Biofuels Deployment Model(More)
States Government nor any agency thereof, nor any of their employees, nor any of the contractors, subcontractors, or their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use(More)