airport_landside_apps

airport_landside_apps - Airport Landside Modeling (Computer...

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Virginia Polytechnic Institute and State University 1 of 77 Airport Landside Modeling (Computer Applications and Modeling) Dr. Antonio A. Trani Associate Professor of Civil and Environmental Engineering Virginia Polytechnic Institute and State University CEE 4674 - Airport Planning and Design
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Virginia Polytechnic Institute and State University 2 of 77 Material Presented in this Section Brief description of airport terminal simulation languages Advantages and weaknesses Basic constructs Example of VPI Airport Terminal Simulation Library (EXTEND) Example APM simulation model (APMSIM) developed at Virginia Tech Future directions and impacts
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Virginia Polytechnic Institute and State University 3 of 77 Purpose of the Discussion Until now you understand the basics of probability, continuous, and discrete event simulation and modeling using generic mathematical packages (such as Matlab) or spreadsheets Dedicated simulation languages keep track of many of the book keeping activities required in the simulation model you can concentrate in the model with minimal implementation burden productivity and model development are enhanced Simulation tools provide rich GUI constructs to enhance understanding from a decision maker viewpoint
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Virginia Polytechnic Institute and State University 4 of 77 Simulation Languages Discrete Event Simulation Languages SIMULA, STELLA, SIMSCRIPT II.5, MODSIM, SLAM III, GPSS-H/GPSS-PC, Arena/SIMAN, EXTEND Continuous Simulation Languages ACSL, Simulink, STELLA, SIMSCRIPT II.5, MODSIM, SLAM III, GPSS-H/GPSS-PC, Arena/SIMAN, EXTEND Many of these languages provide a hybrid modeling capability (i.e., discrete and continuous paradigms in the same model)
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Virginia Polytechnic Institute and State University 5 of 77 A Typical Simulation Language While all languages provide very similar constructs to build models, some have more complex Graphic User Interfaces (GUI) than others The basic building blocks of a simulation model are maintained. Building blocks of discrete simulation languages: Entities, Attributes, Resources, Queues, Accumulators, and Events Building blocks of continuous simulation languages: Integrator (reservoir, tank), generator, delay structures, function blocks, rate variable blocks, etc.
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Virginia Polytechnic Institute and State University 6 of 77 A Typical Simulation Language (cont.) Modern (3rd generation simulation languages) provide rich GUI interfaces to construct and prototype models (EXTEND, Stella, and Arena are good examples of these) Object-oriented data abstraction is the norm All simulation languages have connectivity capabilities with other packages (i.e., statistical, spreadsheets, word processors, programming) ODBC/Corba support for database connectivity OLE support for Windows programming compatibility Statistical package support for regression and input/output analysis
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Virginia Polytechnic Institute and State University 7 of 77 Example of a Simulation Language Use and Connectivity Simulation
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airport_landside_apps - Airport Landside Modeling (Computer...

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