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1、OptimizationModelsforEmptyRailcarDistributionPlanninginCapacitatedNetworksADissertationPresentedByRuhollahHeydaritoTheDepartmentofMechanicalandIndustrialEngineeringinpartialfulfillmentoftherequirementsforthedegreeofDoctorofPhilosophyinthefieldofIndustrialEngineeringNortheaste
2、rnUniversityBoston,MassachusettsJanuary2016ProQuestNumber:3741468AllrightsreservedINFORMATIONTOALLUSERSThequalityofthisreproductionisdependentuponthequalityofthecopysubmitted.Intheunlikelyeventthattheauthordidnotsendacompletemanuscriptandtherearemissingpages,thesewillbenoted.
3、Also,ifmaterialhadtoberemoved,anotewillindicatethedeletion.ProQuest3741468PublishedbyProQuestLLC(2015).CopyrightoftheDissertationisheldbytheAuthor.Allrightsreserved.ThisworkisprotectedagainstunauthorizedcopyingunderTitle17,UnitedStatesCodeMicroformEdition©ProQuestLLC.ProQuest
4、LLC.789EastEisenhowerParkwayP.O.Box1346AnnArbor,MI48106-1346ABSTRACTBecauseofspatialandtemporalimbalancesinthesupplyanddemandofemptyrailcars/carsinfreighttransportationsystems,emptyequipmentrepositioningisinevitable.Astheownersofrailnetwork,trainsandrailcars,railwaycarriersch
5、argetheircustomersbasedonthedaysandthemilesthatarailcarisunderload.Hencethecostofshippingemptycarstocustomersaswellastheopportunitycostofextrainventoryincustomerfacilitiesisontherailway’sshoulder.Areverseroutingstrategysuggestingtoreturntheemptycarstotheplacetheywereloaded,im
6、posesa50%emptymovementinacarcyclewhileareloadstrategysuggestingtoreloadthecarsatthepointtheybecomeemptyhas0%emptymovement.Thefirststrategyisgoodforfrequentshippersonlyandstillistoocostlyandtheidealisticsecondstrategyisnotusuallyfeasiblebecauseofthesupply-demandimbalances.Inth
7、isresearchwedeveloptwoformulationsfortheEmptyRailcarDistributionproblem,bothaimingtominimizethetotalsetupcosts,totaltransportationcosts,andtotalshortagepenaltiesundersupplylimitation,demandsatisfaction,customerpreferencesandpriorities,andnetworkcapacityconstraints.Wefirstform
8、ulatetheproblemasapath-basedcapacitatednetworkflowmodel.Contrarytoth
