存货管理【外文翻译】.docx
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存货管理【外文翻译】.docx
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THEPURCHASINGPLAN
外文翻译
inventorymanagement
MaterialSource:
springlink Author:
FloydD.Hedrick
“Inventory”tomanysmallbusinessownersisoneofthemorevisibleandtangibleaspectsofdoingbusiness.Rawmaterials,goodsinprocessandfinishedgoodsallrepresentvariousformsofinventory.EachtyperepresentsmoneyTiedupuntiltheinventoryleavesthecompanyaspurchasedproducts.Likewise,merchandisestocksinaretailstorecontributetoprofitsonlywhentheirsaleputsmoneyintothecashregister.Inaliteralsense,inventoryreferslostocksofanythingnecessarylodobusiness.Thesestocksrepresentalargeportionofthebusinessinvestmentandmustbewellmanagedinordertomaximizeprofils.Infacl,manysmallbusinessescannotabsorbthetypesoflossesarisingfrompoorinventorymanagement.Unlessinvenloriesarecontrolled,theyareunreliable,inefficientandcostly.
SUCCESSFULINVENTORYMANAGEMENT
Successfulinventorymanagementinvolvesbalancingthecostsofinventorywiththebenefitsofinventory.Manysmallbusinessownersfailtoappreciatefullythetruecostsofcarryinginventory,whichincludenotonlydirectcostsofstorage,insuranceandtaxes,butalsothecostofmoneytiedupininventory.Thisfinelinebetweenkeepingtoomuchinventoryandnotenoughisnotthemanager'sonlyconcern.Othersinclude:
Maintainingawideassortmentofstock••butnotspreadingtherapidlymovingonestoothin:
Increasinginventoryturnover-butnotsacrificingtheservicelevel:
Keepingslocklow-butnotsacrificingserviceorperformance.Obtaininglowerpricesbymakingvolumepurchases--butnotendingupwithslow-movinginvenlory:
andhavinganadequateinvemoryonhand-butnotgellingcaughtwithobsoleteitems.
Thedegreeofsuccessinaddressingtheseconcernsiseasiertogaugeforsomethanforothers.Forexample,computingtheinventoryturnoverratioisasimplemeasureofmanagerialperformance.Thisvaluegivesaroughguidelinebywhichmanagerscansetgoalsandevaluateperformance,butitmustberealizedthattheturnoverratevarieswiththefunctionol'inventory,thetypeofbusinessandhowtheratioiscalculated(whetheronsalesorcostofgoodssold).Averageinventoryturnoverratiosforindividualindustriescanbeobtainedfromtradeassociations.
Oneofthemostimportantaspectsofinventorycontrolistohavetheitemsinstockatthemomenttheyareneeded.Thisincludesgoingintothemarkettobuythegoodsearlyenoughtoensuredeliveryatthepropertime.Thus,buyingrequiresadvanceplanningtodetermineinventoryneedsforeachtimeperiodandthenmakingthecommitmentswithoutprocrastination.
Forretailers,planningaheadisverycrucial.Sincetheyoffernewitemsforsalemonthsbeforetheactualcalendardateforthebeginningofthenewseason,itisimperativethatbuyingplansbeformulated,earlyenoughtoallowforintelligentbuyingwithoutanylastminutepanicpurchases.ThemainreasonforthisearlyofferingforsaleofnewitemsisthattheretailerregardsthecalendardateforthebeginningofIhenewseasonasthemerchandisedateforiheendoftheoldseason.Forexample,manyretailersviewMarch21astheendofthespringseason,June21astheendofsummerandDecember21asIheendofwinter.
Partofyourpurchasingplanmustincludeaccountingforthedepletionoftheinventory.Beforeadecisioncanbemadeastothelevelofinventoryloorder,youmustdeterminehowlongtheinventoryyouhaveinstockwilllast.
Forinstance,aretailfirmmustformulateaplantoensurethesaleofthegreatestnumberofunits.Likewise,amanufacturingbusinessmustformulateaplantoensureenoughinventoryisonhandforproductionofafinishedproduct.
Insummary,thepurchasingplandetail:
Whencommitmentsshouldbeplaced:
Whenthefirstdeliveryshouldbereceived;Whentheinventoryshouldbepeaked;Whenreordersshouldnolongerbeplaced:
andWhentheitemshouldnolongerbeinstock.
Wellplannedpurchasesaffecttheprice,deliveryandavailabilityofproductsfor
sale.
CONTROLLINGYOURINVENTORY
Tomaintainanin-stockpositionofwanteditemsandtodisposeofunwanteditems,itisnecessarytoestablishadequatecontrolsoverinventoryonorderandinventoryinstock.Thereareseveralprovenmethodsforinventorycontrol.Theyarelistedbelow,fromsimplesttomostcomplex.Visualcontrolenablesthemanagertoexaminetheinventoryvisuallytodetermineifadditionalinventoryisrequired.Inverysmallbusinesseswherethismethodisused,recordsmaynotbeneededatalloronlyforslowmovingorexpensiveitems.Ticklercontrolenablesthemanagerto
physicallycountasmallportionoftheinventoryeachdaysothateachsegmentofthe
inventoryiscountedeverysomanydaysonaregularbasis.Clicksheetcontrolenablesthemanagertorecordtheitemasilisusedonasheelofpaper.Suchinformationisthenusedforreorderpurposes.Stubcontrol(usedbyretailers)enablesthemanagertoretainaportionofthepriceticketwhentheitemissold.Themanagercanthenusethestubtorecordtheitemthatwassold.
Asabusinessgrows,itmayfindaneedforamoresophisticatedandtechnicalformofinventorycontrol.Today,theuseofcomputersystemstocontrolinventoryisfarmorefeasibleforsmallbusinessthaneverbefore,boththroughthewidespreadexistenceofcomputerserviceorganizationsandthedecreasingcostofsmall-sizedcomputers.Oftenthejustificationforsuchacomputer-basedsystemisenhancedbythefactthatcompanyaccountingandbillingprocedurescanalsobehandledonthecomputer.
Point-of-saleterminalsrelayinformationoneachitemusedorsold.Themanagerreceivesinformationprintoutsatregularintervalsforreviewandaction.
Off-linepoint-of-saleterminalsrelayinformationdirectlytothesupplier'scomputerwhousestheinformationtoshipadditionalitemsautomaticallytothebuyer/inventorymanager.
Thefinalmethodforinventorycontrolisdonebyanoutsideagency.Amanufacturer'srepresentativevisitsthelargeretaileronascheduledbasis,takesIhestockcountandwritesthereorder.UnwantedmerchandiseisremovedfromstockandreturnedloIhemanufacturerIhroughapredetermined,authorizedprocedure.
Aprincipalgoalformanyofthemethodsdescribedaboveistodeterminetheminimumpossibleannualcostoforderingandstockingeachitem.Twomajorcontrolvaluesareused:
1)theorderquantity,thatis,thesizeandfrequencyoforder:
and2)thereorderpoint,thatis,theminimumstocklevelatwhichadditionalquantitiesareordered.TheEconomicOrderQuantity(EOQ)formulaisonewidelyusedmethodofcomputingtheminimumannualcostfororderingandstockingeachitem.TheEOQcomputationtakesintoaccountthecostofplacinganorder,theannualsalesrate,theunitcost、andthecostofcarryinginvenlory.ManybooksonmanagementpracticesdescribetheEOQmodelindetail.
DEVELOPMENTSININVENTORYMANAGEMENT
Inrecenlyears,twoapproacheshavehadamajorinipacloninventorymanagement:
MaterialRequirementsPlanning(MRP)andJust-In-Time(JITand
Kanban).Theirapplicationisprimarilywithinmanufacturingbutsuppliersmightfindnewrequirementsplacedonthemandsometimesbuyersofmanufactureditemswillexperienceadifferenceindelivery.
Materialrequirementsplanningisbasicallyaninformationsysteminwhichsalesarcconverteddircctlyintoloadsonthefacilitybysub-unitandtimeperiod.Materialsarescheduledmoreclosely,therebyreducinginventories,anddeliverytimesbecomeshorterandmorepredictable.Itsprimaryuseiswithproductscomposedofmanycomponents.MRPsystemsarepracticalforsmallerfirms.Thecomputersystemisonlyonepartofthetotalprojectwhichisusuallylong-term,takingonetothreeyearslodevelop.
Just-in-timeinventorymanagementisanapproachwhichworkstoeliminateinventoriesratherthanoptimizethem.Theinventoryofrawmaterialsandwork-in-processfallstothatneededinasingleday.Thisisaccomplishedbyreducingset-uptimesandleadtimessothatsmalllotsmaybeordered.Suppliersmayhavetomakeseveraldeliveriesadayormoveclosetotheuserplantstosupportthisplan.
TIPSFORBETTERINVENTORYMANAGEMENT
Attimeofdelivery.Verifycount--Makesureyouarereceivingasmanycartonsasarclistedonthedeliveryrcccipt.Carefullyexaminecachcartonforvisibledamage~Ifdamageisvisible,noteitonthedeliveryreceiptandhaveIhedriversignyourcopy.Afterdelivery,immediatelyopenallcartonsandinspcctformerchandisedamage.
Whendamageisdiscovered:
Retaindamageditems-AlldamagedmaterialsmustbeheldatIhepointreceived.Callcarriertoreportdamageandrequestinspection.Confirmcallinwriting—Thisisnotmandatorybutitisonewaytoprotectyourself.
Carrierinspectionofdamageditems.Havealldamageditemsinthereceivingarea-Makecertainthedamageditemshavenotmovedfromthereceivingareapriortoinspectionbycarrier.Aftercarrier/inspectorpreparesdamagereport,carefullyreadbeforesigning.
Afterinspeclion:
Keepdamagedmaterials—Damagedmaterialsshouldnotbeusedordisposedofwithoutpermissionbythecarrier.Donotreturndamageditemswithoutwrillenaulhorizationfromshipper/supplier.
SPECIALTIPSFORMANUFACTURERS
Ifyouareinthebusinessofbidding,specificationsplayaveryimportantrole.Inwritingspecifications,thefollowingelementsshouldbeconsidered.Donotrequestfeaturesorqualitythaiarenotnecessaryfortheitems'intendeduse.Includefulldescriptionsofanyteslinglobeperformed.Includeproceduresforaddingoptionalitems.Describethequalityoftheitemsinclearterms.
Thefollowingaclion
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