论文文献翻译库存补货买卖双方易腐农产品的建模.docx
《论文文献翻译库存补货买卖双方易腐农产品的建模.docx》由会员分享,可在线阅读,更多相关《论文文献翻译库存补货买卖双方易腐农产品的建模.docx(14页珍藏版)》请在冰豆网上搜索。
论文文献翻译库存补货买卖双方易腐农产品的建模
Modellingandanalysisofinventoryreplenishmentforperishableagriculturalproductswithbuyer–sellercollaboration
Inthisarticle,westudytheinventoryreplenishmentmodelforperishableagriculturalproductsinasimpletwo-levelsupplychain.Collaborativeforecastingisintroducedintotheinventoryreplenishmentdecisionstoavoidoverstockingandunderstockingofagriculturalproducts,andtomaximiseprofits.Weanalysethemodelwithorderingcost,holdingcost,shortagecost,deteriorationcostandopportunitylostcostofperishableagriculturalproducts.Extensivenumericalanalysisiscarriedouttostudytheperformanceoftheinventorypolicy.Theoptimalreplenishmentpolicythatminimisesthetotalcostcanbeobtainedfromthemodel.Ithasdemonstratedthatthesupplychaincostdecreaseswithsupplierandretailer’scollaborativeforecasting.
Keywords:
perishable;agricultural;products;inventory;replenishment;collaborative;forecasting
Theperishableagriculturalproductsindustryhasbeenunderpressureregardingtheimprovementoffoodsafety,theimplementationofefficientriskmanagementandrapidresponsecapabilities,andthemanagementofquality‘fromfarmtofork’.Sinceregulation178/2002oftheEuropeanParliament,andoftheCouncil,ongeneralfoodlawcameintoforcein2005,traceabilityhasbecomeanessentialbusinessfunctionforthefoodindustrytoconsistentlysupplyperishableagriculturalproductswithqualityandsafetyassurance.Perishableagriculturalproductstraceabilityisdefinedastheabilitytotraceandfollowperishableagriculturalproductsthroughallstagesofproduction,processinganddistribution(EuropeanCommission2002).Perishableagriculturalproductsproductsareoftentrackedandtracedbymanufacturingbatchesorlogisticunits,insteadofindividualproductitems(Jansen-Crullersetal.2003).Batchnumbersassignedatthestartofthemanufacturingprocessesaccompanyproductsasidentificationsthroughoutasupplychain.Ifaperishableagriculturalproductssafetyproblemcomesfromarawmaterialbatch,allthefinishedproductscontainingthisrawmaterialhavetobeidentifiedandrecalled.
Integrationintoglobalmarketsoffersthepotentialformorerapidgrowthandpovertyreductionforpoorercountries.However,marketbarrierswithinadvancedeconomiestoagriculturalimportshavemadeitharderfordevelopingcountriestotakefulladvantageofthisopportunity.ThisarticleexaminestheimpactofincreasingdemandsforfoodsafetyandqualitybyEuropeanfoodretailers,andhowthefundamentalstructureandcultureofsupplierorganizationsrequiredbyEuropeanretailchainsareamajorentrybarrierfordeveloping.Mediterraneanfreshproduceexportingcountries,andfordevelopingcountriesingeneral.Thelong-termsolutionforsuchcountriestosustainaninternationaldemandfortheirproductsliesinstructural,strategicandproceduralinitiativesthatbuildupthetrustandconfidenceofimporters/retailersinthequalityandsafetyassurancemechanismsfortheirproduce.
Marketfailuretodeliverthelevelofsafetytomeetpublichealthrequirementsandconsumerdemandsconstituteseconomicgroundsforpublicpolicyintervention(UnevennessandJensen,1999).Thelack,orhighcost,ofinformation,andtheresultingconsequencesforpublichealtharethefundamentaljustificationsforpublicinterventiontoimprovefoodsafety.However,allocatingfoodchainsafetyresponsibilitiesfrom‘farmtotable’hascreatedanewparadigmforstakeholderrelationshipscharacterizedbycomplexinteractionsbetweenpublicandprivatemodesofregulation.Theincreasingglobalizationoffoodproductionandconsumptionmakeitdifficultfornationalgovernmentstoexertcomprehensivecontrolsovertheentiresupplychain,andtoidentifytherootsofqualityproblemsinforeigncountries,orendofpipemanagement(Spiller,2002).Theresultingshiftofresponsibilitytowardstheprivatesectorhascreatedamorecomplexanddemanding‘policyspace’involvingpublicandprivatesectorincentivesandcontrols.Theinteractionbetweenself-regulationandpublicregulationcouldprovideasuperioroutcome,asindustryandfirmsaremoreknowledgeableregardingproductquality,andpublicregulationcangeneratereputation-basedincentivestomonitorquality,intheformofpublicexposure.
However,increasingdemandsforfoodsafetybydevelopedcountrieshaveraisedconcernsaboutlikelyfoodregulatoryimpactsoninternationaltrade,particularlyinthecaseofdevelopingcountries(Trotskietal.,2001;HensonandLoader,2001;Hensonetal.,2000;Unevenness,2000).Itisrecognisedthatdevelopingcountriesarelikelytohavedifficultiesinmeetingrequirementsassociatedwiththeimplementationofhighlevelsanitaryorphytosanitarymeasureswhichcomeinconnectionwithtechnicalregulations,standardsandconformitytests(IMF/WorldBank,2002;GarciaMartinezetal.,2002;GarciaMartinezandPoole,2004;WilsonandAbiosis,2003).Asthecommercialandinstitutionalinfrastructuredevelops,thereistheriskthatnewregulatorybarrierswillbeerected.Thisisofparticularconcern
fordevelopingcountries,whereexistingtechnicalandinstitutionalcapacitytocontrolandensurecompliancemaynotallowfortheadjustmentsneededtomeetnewrequirements.
Mostofthecurrentdebatehasfocusedontheimpactofpublicnationalandsupranational(e.g.EuropeanUnion)regulatorydemandsonmarketaccessfordevelopingcountries(seeforexample,Reardonetal.,1999;Buschetal.,2000;WeatherspoonandReardon,2003;Unevenness,2000).Thecriticalfocusnowneedstoshiftfromsuchpublicregulatorystandards,orTats(technicalbarrierstotrade),towardstheincreasingimportanceoffoodsafetyregulationsimposedoverandabovepublicstandardsbyprivatesector(commercial)firms,andtheirpotentialimpactonagriculturalandfoodproductexportsfromdevelopingcountries.Opportunitiesandthreatsbotharisefromthegrowthofsuchprivatestandards,whichcanbetermed‘commercialbarrierstotrade’。
Unsurprisingly,thesafetyoffoodproductshasbeenatopicofdebateforcenturies.Thefirstknownlawpertainingtothepurityoffoodproducts,knownasthe“GermanBeerPurityLaw”orReinfestation,datesasfarbackas1516(Dornbusch,1997).Todaywehaveamyriadoflaws,regulations,standards,processes,toolsandtechnologiesintendedtoensurefoodsafety.Nevertheless,foodsafetyscandalsstilloccuronanalltooregularbasis.Table1presentssomehighprofilefoodsafetyincidentsthathaveoccurredinseveralcountries.
Fromasafetyperspective,foodsupplychainshaveanumberofvulnerabilities(Whippleetal.,2009).First,theydealwithnaturalproducts,manyofwhichareperishableandcouldbecomeharmfultoconsumersifnotmanagedinatimelyandsafemanner(Akkermanetal.,2010).Secondly,foodsupplychainstendtobelong,globalandhighlyinterconnected,leadingtogreaterriskexposure(HensonandReardon,2005;Rothetal.,2008;TrienekensandZuricher,2008;Whippleetal.,2009).Third,foodandbeverageproductsareatriskofintentionalorunintentionaladulterationandcouldevenbethetargetofterroristthreats(WeinandLou,2005;Whippleetal.,2009).AccordingtoHarl(2002),amongsevengeneralareasofvulnerabilitytoterrorismintheUS,fivearerelatedtothefoodsupplychain.Carefulmanagementacrosstheentiresupplychainisnecessarytoensurethat-productsreachingthefinalconsumeraresafetoeatanddrink.
ResearchbyVossetal.(2009)exploresthetradeoffsamongprice,delivery,qualityandsafetyinselectingsuppliersinthefoodsupplychainsoftheU.S.Theirresearchconcludesthat,ingeneral,safetyconsiderationstendtobelessimportantinselectingsupplierswhencomparedtoquality,deliveryandprice.Theyarguethatthislowerprioritycouldbeafactorbehindthefrequencyoffoodsafetyincidents.However,theirresultsalsoindicatethatsafetyismoreimportantundercertaincircumstances,particularlywhenproductsaresourcedfromabroad.Failuresinfoodsafetycanhaveseriousnegativeconsequencesnotonlyforconsumers,butalsoforthecompaniesinvolved.Theworstcasescenariooccurswhenincidentsleadtodeathsorillness(TrienekensandZuurbier,2008).AccordingtoThomsenandMcKenzie(2001)millionsofpeoplearoundtheworldbecomeilleveryyearasaresultofunsafefoods.IthasbeenestimatedthatintheU.S.alone,foodbornepathogensaccountfor76millionillnessesand5000deaths(Meadetal.,1999).ThomsenandMcKenzie(2001)arguethathumanerrorandthelimitationsoffoodsafetytechnologymeanthat,fromtimetotime,consumerswillfacefoodsafetyrisks.HighprofileincidentssuchastheSalmonellaoutbreakcausedbypeanutbutterpastesoldbythePeanutCorporationofAmericain2008
(LaytonandMiroff,2009),ortheadulterationofpowderedmilkwithmelamineinChinainthesameyear(Spencer,2009),havemadetheheadlinesduetotheirscaleandseverity.Inbothcasestheconsequencesforthoseinvolvedhavebeenserious.ThePeanutCorporationofAmericafiledforbankruptcyinFebruary2009(LaytonandMiroff,2009).IntheChinesecase,Sanlu,thecompanyresponsible,hasbeencloseddown,thegeneralmanagerandanumberofcompanyofficialsareinjail,andtwohavebeensentencedtodeath(Spencer,2009).
Mostfoodsafetyincidentsdonotleadtodeathorillness,andinmanycasesproductscanberecalledbeforetheyreachtheconsumer.However,recallscanbecomplexandcostly(ThomsenandMcKenzie,2001;Whippleetal.,2009),theycandamageafirm’sreputation(Hornibrooketal.,2005;ThomsenandMcKenzie,2001;Whippleetal.,2009),and