ASTM E2139-2005 同异试验标准试验方法
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【英文标准名称】:StandardTestMethodforSame-DifferentTest
【原文标准名称】:同异试验标准试验方法
【标准号】:ASTME2139-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【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】:E18.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验
【英文主题词】:differencetest;minimizecarry-over;minimizesensoryfatigue;sensorytestfordifference;two-samplesensorytest
【摘要】:Thisoveralldifferencetestmethodisusedwhenthetestobjectiveistodeterminewhetherasensorydifferenceexistsordoesnotexistbetweentwosamples.Itisalsoknownasthesimpledifferencetest.Thetestisappropriateinsituationswheresampleshaveextremeintensities,giverapidsensoryfatigue,havelonglingeringflavors,orcannotbeconsumedinlargequantities,oracombinationthereof.Thetestisalsoappropriateforsituationswherethestimulussitesarelimitedtotwo(forexample,twohands,eachsideoftheface,twoears).Thetestprovidesameasureofthebiaswherejudgesperceivetwosameproductstobedifferent.Thetesthastheadvantageofbeingasimpleandintuitivetask.1.1Thistestmethoddescribesaprocedureforcomparingtwoproducts.1.2ThistestmethoddoesnotdescribetheThurstonianmodelingapproachtothistest.1.3Thistestmethodissometimesreferredtoasthesimple-differencetest.1.4Asame-differenttestdetermineswhethertwoproductsareperceivedtobethesameordifferentoverall.1.5Theprocedureofthetestdescribedinthistestmethodconsistsofpresentingasinglepairofsamplestoeachassessor.Thepresentationofmultiplepairswouldrequiredifferentstatisticaltreatmentanditisoutsideofthescopeofthistestmethod.1.6Thistestmethodisnotattribute-specific,unlikethedirectionaldifferencetest.1.7Thistestmethodisnotintendedtodeterminethemagnitudeofthedifference;however,statisticalmethodsmaybeusedtoestimatethesizeofthedifference.1.8Thistestmethodmaybechosenoverthetriangleorduo-triotestswheresensoryfatigueorcarry-overareaconcern,orwhereasimplertaskisneeded.Thisstandardmayinvolvehazardousmaterials,operations,andequipment.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A01
【国际标准分类号】:03_100_50
【页数】:12P.;A4
【正文语种】:
【原文标准名称】:同异试验标准试验方法
【标准号】:ASTME2139-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【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】:E18.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验
【英文主题词】:differencetest;minimizecarry-over;minimizesensoryfatigue;sensorytestfordifference;two-samplesensorytest
【摘要】:Thisoveralldifferencetestmethodisusedwhenthetestobjectiveistodeterminewhetherasensorydifferenceexistsordoesnotexistbetweentwosamples.Itisalsoknownasthesimpledifferencetest.Thetestisappropriateinsituationswheresampleshaveextremeintensities,giverapidsensoryfatigue,havelonglingeringflavors,orcannotbeconsumedinlargequantities,oracombinationthereof.Thetestisalsoappropriateforsituationswherethestimulussitesarelimitedtotwo(forexample,twohands,eachsideoftheface,twoears).Thetestprovidesameasureofthebiaswherejudgesperceivetwosameproductstobedifferent.Thetesthastheadvantageofbeingasimpleandintuitivetask.1.1Thistestmethoddescribesaprocedureforcomparingtwoproducts.1.2ThistestmethoddoesnotdescribetheThurstonianmodelingapproachtothistest.1.3Thistestmethodissometimesreferredtoasthesimple-differencetest.1.4Asame-differenttestdetermineswhethertwoproductsareperceivedtobethesameordifferentoverall.1.5Theprocedureofthetestdescribedinthistestmethodconsistsofpresentingasinglepairofsamplestoeachassessor.Thepresentationofmultiplepairswouldrequiredifferentstatisticaltreatmentanditisoutsideofthescopeofthistestmethod.1.6Thistestmethodisnotattribute-specific,unlikethedirectionaldifferencetest.1.7Thistestmethodisnotintendedtodeterminethemagnitudeofthedifference;however,statisticalmethodsmaybeusedtoestimatethesizeofthedifference.1.8Thistestmethodmaybechosenoverthetriangleorduo-triotestswheresensoryfatigueorcarry-overareaconcern,orwhereasimplertaskisneeded.Thisstandardmayinvolvehazardousmaterials,operations,andequipment.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A01
【国际标准分类号】:03_100_50
【页数】:12P.;A4
【正文语种】:
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