dependent demand——a business pattern for balancing supply and demand

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1、DependentDemand——aBusinessPatternforBalancingSupplyandDemandDependentDemand-aBusinessPatternforBalancingSupplyandDemandVersion7.010-15-97Copyright1997,RobertHaugen,AllRightsReservedIntroduction:Thisisthefirstpatterninaprocessthatwilldevelopapatternlanguageforsuppl

2、ychainmanagement.TheconceptofdependentdemandwasthemainintellectualcontributionofthesoftwaremovementknownasMaterialRequirementsPlanningorMRP.Itiswell-documented[1]andwell-knownwithinmanufacturingsoftwarecircles[2].Themotivationforwritingupdependentdemandasapatterni

3、sthata)theapplicabilityoftheideahasbroadenedsignificantlysinceitsconception;b)thesebroaderusesarenotwell-documented;andc)someopportunitiesforusingdependentdemandarebeingmissed(forexample,duplicatebufferstockskeptbybothcompaniesinvolvedinconsumer-supplierrelationsh

4、ips).TraditionalMRPdealtwithdependentdemandsformaterials(only)withinasinglemanufacturingplant.Morerecentsoftware,andthispaper,extendthepatterntodealwithallresourcerequirementsincludingpeople,machinesandtools.Moreover,supplychaintimecompressionhasemergedasamajorfoc

5、usofbusinesscompetition.Givensomeprovenabilitytohelpcompresstime,SupplyChainManagementsoftwarehasbecomeabillion-dollarsoftwaremarketcategory.Thesephenomenamotivatetheextensionofdependentdemandnetworkstocovermultiplecompaniesandthetransportationbetweenthem.TypeofPa

6、ttern:DependentDemandisnotadesignpattern.Itcouldbe(andhasbeen)implementedmanydifferentways.Itisapatternofrelationshipsbetweenbusinesseventsandthegeneralized(abstract)techniqueformanagingtheserelationships.Definitions:IndependentDemandisanydemandthathasnocausewithi

7、nthebusiness-systemcontext(althoughitmayhaveacauseinalargercontext).Forexample,toanautomobiledealer,acustomerorderforanewcarisanindependentdemand(althoughtothecustomer,itmighthavebeendependentontheunreliabilityofthecustomer’soldcar).DependentDemandisanydemandthati

8、scausedbyanindependentdemand,orisnecessarytothesatisfactionoftheindependentdemand.Forexample,anindependentdemandforanewcarcausesdependentdemandsforallof