【英文标准名称】:StandardPracticeforStatisticalAssessmentandImprovementofExpectedAgreementBetweenTwoTestMethodsthatPurporttoMeasuretheSamePropertyofaMaterial
【原文标准名称】:测量同一物质相同属性的两种测试方法间预期协定的统计评定与改进标准实施规程
【标准号】:ASTMD6708-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D02.94
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:Agreement(testingmethods);Bias;Cross-methodreproducibility;Interlaboratorytesting;Linearbiascorrection;Quantifieddata;Statisticalmethods--petroleum;Testingmethods
【摘要】:Thispracticecanbeusedtodetermineifaconstant,proportional,orlinearbiascorrectioncanimprovethedegreeofagreementbetweentwomethodsthatpurporttomeasurethesamepropertyofamaterial.Thebiascorrectiondevelopedinthispracticecanbeappliedtoasingleresult(X)obtainedfromonetestmethod(methodX)toobtainapredictedresult(x02C6;Y)fortheothertestmethod(methodY).Note78212;Usersarecautionedtoensurethatx02C6;YiswithinthescopeofmethodYbeforeitsuse.Thebetweenmethodsreproducibilityestablishedbythispracticecanbeusedtoconstructanintervalaroundx02C6;YthatwouldcontaintheresultoftestmethodY,ifitwereconducted,withabout95%confidence.Thispracticecanbeusedtoguidecommercialagreementsandproductdispositiondecisionsinvolvingtestmethodsthathavebeenevaluatedrelativetoeachotherinaccordancewiththispractice.1.1Thispracticecoversstatisticalmethodologyforassessingtheexpectedagreementbetweentwostandardtestmethodsthatpurporttomeasurethesamepropertyofamaterial,anddecidingifasimplelinearbiascorrectioncanfurtherimprovetheexpectedagreement.ItisintendedforusewithresultscollectedfromaninterlaboratorystudymeetingtherequirementofPracticeD6300orequivalent(forexample,ISO4259).Theinterlaboratorystudymustbeconductedonatleasttenmaterialsthatspantheintersectingscopesofthetestmethods,andresultsmustbeobtainedfromatleastsixlaboratoriesusingeachmethod.Note18212;ExamplesofstandardtestmethodsarethosedevelopedbyvoluntaryconsensusstandardsbodiessuchasASTM,IP/BSI,DIN,AFNOR,CGSB.1.2Thestatisticalmethodologyisbasedonthepremisethatabiascorrectionwillnotbeneeded.Intheabsenceofstrongstatisticalevidencethatabiascorrectionwouldresultinbetteragreementbetweenthetwomethods,abiascorrectionisnotmade.Ifabiascorrectionisrequired,thentheparsimonyprincipleisfollowedwherebyasimplecorrectionistobefavoredoveramorecomplexone.Note28212;Failuretoadheretotheparsimonyprinciplegenerallyresultsinmodelsthatareover-fittedanddonotperformwellinpractice.1.3Thebiascorrectionsofthispracticearelimitedtoaconstantcorrection,proportionalcorrectionoralinear(proportional+constant)correction.1.4Thebias-correctionmethodsofthispracticearemethodsymmetric,inthesensethatequivalentcorrectionsareobtainedregardlessofwhichmethodisbias-correctedtomatchtheother.1.5Amethodologyispresentedforestablishingthe95%confidencelimit(designatedbythispracticeasthebetweenmethodsreproducibility)forthedifferencebetweentworesultswhereeachresultisobtainedbyadifferentoperatorusingdifferentapparatusandeachapplyingoneofthetwomethodsXandYonidenticalmaterial,whereoneofthemethodshasbeenappropriatelybias-correctedinaccordancewiththispractice.Note38212;Inearlierversionsofthisstandardpractice,thetermx201C;cro......
【中国标准分类号】:A41
【国际标准分类号】:75_080
【页数】:14P.;A4
【正文语种】:英语


【英文标准名称】:Industrialautomationsystemsandintegration-Productdatarepresentationandexchange-Part1042:Applicationmodule:Workrequest
【原文标准名称】:工业自动化系统和集成.产品数据表示和交换.第1042部分:应用模式:作业请求
【标准号】:ISO/TS10303-1042-2004
【标准状态】:现行
【国别】:国际
【发布日期】:2004-12
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC184
【标准类型】:()
【标准水平】:()
【中文主题词】:自动化系统;使用;信息交流;信息交换;数据交换;产品数据;表示法;数据表示;计算机应用;自动化;工业产品
【英文主题词】:Applications;Automation;Automationsystems;Computerapplications;Dataexchange;Datarepresentation;Industrialproducts;Informationexchange;Informationinterchange;Productdata;Representations
【摘要】:ISO/TS10303-1042:2004specifiestheapplicationmoduleWorkrequest.ThefollowingarewithinthescopeofISO/TS10303-1042:2004:identificationandcharacterizationaworkrequest;associationofaworkrequestwithanactivitymethod;identificationoftheproductoractivitydataaffectedbytheworkrequest.
【中国标准分类号】:N18
【国际标准分类号】:35_240_50
【页数】:31P;A4
【正文语种】:英语