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1、Chapter1 WhatisSimulation?SimulationIs...Verybroadterm,setofproblems/approachesGenerally,imitationofasystemviacomputerInvolvesamodel—validity?Don’tevenaspiretoanalyticsolutionDon’tgetexactresults(bad)Allowsforcomplex,realisticmodels(good)Approximateanswertoexactproblemisbetterthanexactanswert
2、oapproximateproblemConsistentlyrankedasmostuseful,powerfulofmathematical-modelingapproaches2SimulationwithArena—Chapter1—WhatisSimulation?SomeApplicationAreasManufacturing—scheduling,inventoryStaffingpersonal-serviceoperationsBanks,fastfood,themeparks,PostOffice,...DistributionandlogisticsHea
3、lthcare—emergency,operatingroomsComputersystemsTelecommunicationsMilitaryPublicpolicyEmergencyplanningCourts,prisons,probation/parole3SimulationwithArena—Chapter1—WhatisSimulation?SystemsPhysicalfacility/process,actualorplannedStudyitsperformanceMeasureImproveDesign(ifitdoesn’texist)Maybecont
4、rolinrealtimeSometimespossibleto“play”withthesystemButsometimesimpossibletodosoDoesn’texistDisruptive,expensive4SimulationwithArena—Chapter1—WhatisSimulation?ModelsAbstraction/simplificationofthesystemusedasaproxyforthesystemitselfCantrywide-rangingideasinthemodelMakeyourmistakesonthecomputer
5、wheretheydon’tcount,ratherforrealwheretheydocountIssueofmodelvalidityTwotypesofmodelsPhysical(iconic)Logical/Mathematical—quantitativeandlogicalassumptions,approximations5SimulationwithArena—Chapter1—WhatisSimulation?WhatDoYouDowithaLogicalModel?Ifmodelissimpleenough,usetraditionalmathematics
6、(queueingtheory,differentialequations,linearprogramming)toget“answers”Niceinthesensethatyouget“exact”answerstothemodelButmightinvolvemanysimplifyingassumptionstomakethemodelanalyticallytractable—validity??Manycomplexsystemsrequirecomplexmodelsforvalidity—simulationneeded6SimulationwithArena—C
7、hapter1—WhatisSimulation?ComputerSimulationMethodsforstudyingawidevarietyofmodelsofreal-worldsystemsUsenumericalevaluationoncomputerUsesoftwaretoimitatethesystem’soperationsandcharacteristics,oftenovertimeInpractice,istheprocessofdesigningand
