Optimal Decisions for Deteriorating Items with Expiration Date and Uncertain Lead Time
Loading...
Date
item.page.authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
InventorydecisionsinsupplychainarecrucialforitssuccessThesedecisionsbecomemoreimportantfortheproductswithexpirationdateMakingthesedecisionsininventorysystemsisachallengingtaskformanagersWithtodayshighcompetitivemarkettoaffordthecostofwarehousesisaverydifficulttaskforthemanagementinmostofthecountriesManagersarefacedwiththeneedtodeliverahighlevelofservicewithminimalwarehouseandinventorycostSincealargeorderedquantityincreasestheworkforceofawarehouseSoitisnecessarytodeveloptoolswhichcanhelpmanagerstohandlethewarehousetoavoidtheextracostofhandlingSoitiseconomicaltoordertheinventoryaccordingtoavailablestoragespaceThusitcanbesaidthattheinventorycontrolproblemwithvariabledemandpatternfordeterioratingproductsisimportantinindustryandvirtuallyaffecttheeveryaspectofdailylifeoperationsMostapproachesintheliteratureforoptimizingdecisionsinsuchanenvironmentconsideronlyasingleiteminventoryInthepresentthesiswehavepresentedamultiiteminventorymodeltooptimizetheunittimeprofitofinventorymanagementfortheproductshavinganexpirationdateFurtherinthethesisaproblemwithspacerestrictionbasedondifferentleadtimesituationsisdevelopedAsononesidetheshortagecostsaresignificantontheothersidetomaintainappropriateinventorylevelsforsuchtypeofproductsandavoidshortagesisaveryproblematicjobIncaseofexpiryproductsthedemandfortheproductsalwaysdecreaseastheproductisnearertoitsexpirationdateSoitisnecessarytoexamineconsumersresponsetoexpirationdatesforgrocerystoreperishableproductsTakingintoconsiderationamodelfortwoechelonsupplychainunderinflationaryenvironmentwiththeeffectofpreservationtechnologyisdevelopedfurtherinthethesisAconceptualframeworkthatcapturesthefrequencywithwhichconsumerscheckexpirationdatesandtheirwillingnesstopayforaperishableoveritsshelflifehasbeendevelopedFurtherdifferentrealisticconceptssuchasintegratedinventorystockdependentdemandtradecreditpolicynoninstantaneousdeteriorationintheproductsandtoavailtheremainingstockinsecondarymarketareincorporatedinthedifferentchaptersofthepresentthesisThemodelsaredesignedwiththedifferentconceptsofvariablehol