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1、外文翻译原文QualityControlMaterialSource:JournalofAppliedStatistics，2007Author:FahFattAbstract:tobecompetitiveintheintermationalmarket-place,modernmanufacturesneedtopaykeenattentiontoqualitymonitoringandcontrol.Inthispaper,wediscussprocessqualitymonitoring,cont
2、rolandadjustmentfromamodernstatisticaltimeseriesanalysispointofview.Inparticular,weshowhowseveralapproachescanbereconciled.Controlisacontinuousendeavourtoachieveprocessstability.Thisisahardtaskbecauseitrequiresustoundotheeffectsofthesecondlawofthermaldyna
3、mics.Youwillrecallthatthislawsaysthat,lefttoitself,theentropy(ordisoraganization)ofanysystemmustalwaysincreaseorstayconstant.Whileitisneverpossibletodefeatthesecondlawofthermaldynamicscompletely,twodifferenttechniqueswhichachievethisapproximatelyareproces
4、smonitoringandprocessadjustment..Dependingoncircumstances,either(or,morelikely,both)maybeneeded.Byprocessmonitoring,Imeantheuseof,forexample,Shewhartchartsand/orCusumorCuscorecharts(Box&Ramirez,1991).Thesearedevicesforcontinuallycheeckingamodelwhichisinte
5、ndedtorepresentthedesiredstablestateofthesystem-forexampleNIIDvariationaboutafixedtargetT.theirusecanleadtotheeliminationofassignablecausespointedtotobydiscrepantbehavior.Processmonitoringparallelshypothesisanditspropertiesaredescribedintermsofprobabiliti
6、es(forexampletheprobabilityofpointfallingoutsidethe3σlimitsofaShewhartchart).ProcessQualityControlObjectives.Constructionprojectsthroughtheentireprocesstogetherwithprocedurestobecompleted.Thequalityofeachprocessmusthavetomeetthecorrespondingrequirementsun
7、dertheproceduresofqualitystandards,processqualityisboundtodecidethequalityofproducts.ProjectqualitycontrolobjectivesResolvableas:personnel,materials,machinery,constructionmethodsandconstructionoftheenvironment5.Engineeringproductqualityreferstotheprojectt
8、omeettherelevantstandardsorcontractualrequirements,includingintheuseoffunctional,safetyanddurabilityandenvironmentalprotectionofallvisibleandhiddencharacteristicsofthesumofthecapacity.Productqualitycontrolobjectives
