7 research outputs found

    DISCUSSIONS AND SUGGESTIONS ON USING DIFFERENT POINT-TO-POINT PROTOCOLS FOR TRANSPORT AND DISPERSION MODEL EVALUATIONS

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    Historically, assessments of T&D models have involved comparisons to field trial data using quantities derived from observations – maximum concentrations, plume widths, or integrated concentrations over arcs at various downwind ranges. Recently several methodologies that compare observations and predictions paired in space and time have been developed. Two different protocols designed to deal with low observed or predicted values have emerged. One of these protocols requires that both the observation and the prediction must exceed a specified threshold before being considered in the comparison. The other protocol requires that either the observation or the prediction must exceed a specified threshold before being considered in the comparison. This presentation compares the potential effects of applying these two protocols to T&D model assessments

    EVALUATION OF URBAN ATMOSPHERIC TRANSPORT AND DISPERSION MODELS USING DATA FROM THE JOINT URBAN 2003 FIELD EXPERIMENT

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    We have evaluated the performance of several urban atmospheric transport and dispersion models by comparing model predictions to tracer gas concentrations measured during the Joint Urban 2003 field experiment in Oklahoma City, USA. These models include the Urban Canopy, Urban Dispersion Model (UDM), and Micro-SWIFT/SPRAY (MSS) modes within the HPAC modelling suite, QUIC-URB/QUIC-PLUME models, and the MESO/RUSTIC models. We discuss some of the results of these comparisons, including relative model performance according to bias and scatter metrics, differences in model behavior for predictions of daytime versus nighttime releases, and operational considerations such as runtime differences

    Process mapping and scripting in the Accounting Information Systems (AIS) curriculum

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    The ability to understand, document, and suggest improvements for a business process is an important skill for an accounting student for the following reasons: (1) efficient business processes give businesses a competitive advantage; (2) business process analysis provides auditors with an assessment of business risk; and (3) successful enterprise resource planning implementation depends on understanding and improving existing business processes. It is suggested that students be introduced to process mapping and scripting in an accounting information systems (AIS) course to facilitate their understanding of business processes and help them visualize the interaction between functional areas. The specifics of process mapping are covered and advantages of incorporating process mapping into the AIS curriculum discussed. It is also proposed that scripting, which is used to facilitate configuration, testing of ERP software and communication between the accountant and the programmer, be included in the AIS course. Finally, suggestions for classroom activities are included.Business Processes, Process Mapping, Scripting, Ais Education, Ais Curriculum,

    Pesticide residues

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