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原文
IntroductiontoSupplyChainManagement
MaterialSource:
Purchasingandsupplychainmanagement,South-westenCollegePublishing,2001
Author:
MonczkaR.Trent.RandHandfidld
TheEmergenceofSupplyChain
Managersinthelasttwodecadeshavewitnessedaperiodofchangeunparalleledinthehistoryoftheworld,intermsofadvancesintechnology,globalizationofmarkets,andstabilizationofpoliticaleconomies.Withtheincreasingnumberof"
world-class"
competitorsbothdomesticallyandabroad,organizationshavehadtoimprovetheirinternalprocessesrapidlyinordertoslaycompetitive.Inthe1960s-1970s,companiesbegantodevelopdetailedmarketstrategies,whichfocusedoncreatingandcapturingcustomerloyalty.Organizationsalsorealizedthatstrongengineering,design,andmanufacturingfunctionswerenecessaryinordertosupportthesemarketrequirements.Designengineershadtobeabletotranslatecustomerneedsintoproductandservicespecifications,whichthenhadtobeproducedatahighlevelofqualityandatareasonablecost.Asthedemandfornewproductsescalatedinthe1980s,manufacturingorganizationswererequiredtobecomeincreasinglyflexibleandresponsivetomodifyexistingproductsandprocessesortodevelopnewonesinordertomeetever-changingcustomerneeds.Asmanufacturingcapabilitiesimprovedinthe1990s,managersrealizedthatmaterialandserviceinputsfromsuppliershadamajorimpactontheirorganizations'
abilitytomeetcustomerneeds.Thisledtoanincreasedfocusonthesupplybaseandtheorganization’ssourcingstrategy.Manageralsorealizedthatproducingaqualityproductwasnotenough.Gettingtheproductstocustomerswhen,where,how,andinthequantitythattheywant,inacost-effectivemanner,constitutedanentirelynewtypeofchallenge.Morerecently,theeraofthe"
LogisticsRenaissance"
wasalsoborn,spawningawholesetoftime-reducinginformationtechnologiesandlogisticsnetworksaimedatmeetingthesechallenges.
Asaresultofthesechanges,organizationsnowfindthatitisnolongerenoughtomanagetheirorganizations.Theymustalsobeinvolvedinthemanagementofthenetworkofallupstreamfirmsthatprovideinputs(directlyorindirectly),aswellasthenetworkofdownstreamfirmsresponsiblefordeliveryandafter-marketserviceoftheproducttotheendcustomer.Fromthisrealizationemergedtheconceptofthe"
supplychain"
.
TheDefinitionofSupplyChainManagement
Thesupplychainactivitiesencompassallassociatedwiththeflowandtransformationofgoods,theflowofinformationfromtherawmaterialssuppliertotheenduser,aswellasthereverseflowofmaterialsandinformationinthesupplychain.
Supplychainmanagementistheintegrationoftheseactivitiesthroughimprovedsupplychainrelationships,toachieveasustainablecompetitiveadvantage.
Inthisdefinition,thesupplychainincludesthemanagementofinformationsystems,sourcingandprocurement,productionscheduling,orderprocessing,inventorymanagement,warehousing,customerservice,andafter-marketdispositionofpackagingandmaterials.Thesuppliernetworkconsistsofallorganizationsthatprovideinputs,eitherdirectlyorindirectly,tothefocalfirm.Forexample,anautomotivecompany*ssuppliernetworkincludesthethousandsoffirmsthatprovideitemsrangingfromrawmaterialssuchassteelandplastics,tocomplexassembliesandsubassemblies.Agivenmaterialmaypassthroughmultipleprocesseswithinmultiplesuppliersanddivisionsbeforebeingassembledintoavehicle.Asupplierforthiscompanyhasitsownsetofsuppliersthatprovideinputs(calledsecond-tiersuppliers)thatarealsopartofthissupplychain.Thebeginningofasupplychaininevitablycanbe(racedbackto"
Motherearth"
;
thatis,theultimateoriginalsourceofallmaterialsthatflowthroughthechain(e.g.,ironore,coal,petroleum,wood,etc.).Supplychainsareessentiallyaseriesoflinkedsuppliersandcustomers;
everycustomerisinturnasuppliertothenextdownstreamorganizationuntilafinishedproductreachestheultimateenduser.
TheComponentsofSupplyChainfromtheFocalFirm’sPerspective
Itisimportanttonotethatfromthefocalfirm’sperspective,thesupplychainincludesinternalfunctions,upstreamsuppliers,anddownstreamcustomers.Afirm'
sinternalfunctionsincludethedifferentprocessesusedintransformingtheinputsprovidedbythesuppliernetwork.Inthecaseofanautomotivecompany,thisincludesallofitspartsmanufacturing(e.g.,stamping,powertrain,andcomponents),whichareeventuallybroughttogetherintheirfinalassemblyoperationsintoactualautomobiles.Thiscoordinationandschedulingoftheseinternalflowsisverychallenging,particularlyinalargeorganizationsuchasanautomotivecompany-Forexample,orderprocessingmanagersarere