GB/T 9379-1988 电视广播接收机主观试验评价方法
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来源:标准资料网
基本信息
标准名称: | 电视广播接收机主观试验评价方法 |
英文名称: | Subjective tests and assessment for broadcasting television receivers |
中标分类: |
通信、广播 >>
广播、电视设备 >>
广播、电视发送与接收设备 |
ICS分类: |
电信、音频和视频技术 >>
音频、视频和视听工程 >>
无线电接收机
|
发布部门: | 中华人民共和国电子工业部 |
发布日期: | 1988-04-15 |
实施日期: | 1988-12-01 |
首发日期: | 1988-06-18 |
作废日期: | 1900-01-01 |
主管部门: | 信息产业部(电子) |
归口单位: | 全国音频、视频及多媒体系统与设备标准化技术委员会 |
起草单位: | 电子工业部第三研究所 |
出版社: | 中国标准出版社 |
出版日期: | 1900-01-01 |
页数: | 10页 |
适用范围
本标准适用于符合我国广播电视制式的各种电视广播接收机(以下简称电视机),也可供其他广播电视制式的电视机主观试验评价参考。
前言
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目录
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引用标准
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所属分类: 通信 广播 广播 电视设备 广播 电视发送与接收设备 电信 音频和视频技术 音频 视频和视听工程 无线电接收机
【英文标准名称】:StandardPracticefor99%/95%InterlaboratoryDetectionEstimate(IDE)forAnalyticalMethodswithNegligibleCalibrationError
【原文标准名称】:带可忽略校准误差的分析方法用99%95%试验室间检测评估(IDE)的标准实施规程
【标准号】:ASTMD6091-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:D19.02
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:分析方法;校准;校准误差;检测;评估;实验室;实验室法
【英文主题词】:criticallimit;detection;detectionlimit;falsedetection;falsenondetection;falsepositive;matrixeffects;statisticaltolerancelimit;truedetection;truenondetection
【摘要】:AppropriateapplicationofthispracticeshouldresultinanIDEachievablebymostlaboratoriesproperlyusingthetestmethodstudied.ThisIDEprovidesthebasisforanyprospectiveuseofthetestmethodbyqualifiedlaboratoriesforreliabledetectionoflow-levelconcentrationsofthesameanalyteastheonestudiedinthispracticeandsamemedia(matrix).TheIDEvaluesmaybeusedtocomparethedetectionpowerofdifferentmethodsforanalysisofthesameanalyteinthesamematrix.TheIDEprovideshighprobability(approximately95%)thatresultvaluesofthemethodstudiedwhichexceedtheIDErepresentpresenceofanalyteinthesampleandhighprobability(approximately99%)thatblanksampleswillnotresultinadetection.TheIDEprocedureshouldbeusedtoestablishtheinterlaboratorydetectioncapabilityforanyapplicationofamethodwhereinterlaboratorydetectionisimportanttodatause.TheintentofIDEisnottosetreportinglimits.1.1Thispracticeestablishesastandardforcomputinga99%/95%InterlaboratoryDetectionEstimate(IDE)andprovidesguidanceconcerningtheappropriateuseandapplication.ThecalculationsinvolvedinthispracticecanbeperformedwithDQCALC,MicrosoftExcel-basedsoftwareavailablefromASTM.1.2TheIDEiscomputedtobethelowestconcentrationatwhichthereis90%confidencethatasinglemeasurementfromalaboratoryselectedfromthepopulationofqualifiedlaboratoriesrepresentedinaninterlaboratorystudywillhaveatruedetectionprobabilityofatleast95%andatruenondetectionprobabilityofatleast99%(whenmeasuringablanksample).1.3Thefundamentalassumptionofthecollaborativestudyisthatthemediatested,theconcentrationstested,andtheprotocolfollowedinthestudyprovidearepresentativeandfairevaluationofthescopeandapplicabilityofthetestmethodaswritten.Whenproperlyapplied,theIDEprocedureensuresthatthe99%/95%IDEhasthefollowingproperties:1.3.1RoutinelyAchievableIDEValue8212;MostlaboratoriesareabletoattaintheIDEdetectionperformanceinroutineanalyses,usingastandardmeasurementsystem,atreasonablecost.Thispropertyisneededforadetectionlimittobepracticallyfeasible.RepresentativelaboratoriesmustbeincludedinthedatatocalculatetheIDE.1.3.2RoutineSourcesofErrorAccountedfor8212;TheIDEshouldrealisticallyincludesourcesofbiasandvariationwhicharecommontothemeasurementprocess.Thesesourcesinclude,butarenotlimitedto:intrinsicinstrumentnoise,sometypicalamountofcarryovererror,plusdifferencesinlaboratories,analysts,samplepreparation,andinstruments.1.3.3AvoidableSourcesofErrorExcluded8212;TheIDEshouldrealisticallyexcludeavoidablesourcesofbiasandvariation,thatis,thosewhichcanreasonablybeavoidedinroutinefieldmeasurements.Avoidablesourceswouldinclude,butarenotlimitedto:modificationstothesample,measurementprocedure,ormeasurementequipmentofthevalidatedmethod,andgrossandeasilydiscernibletranscriptionerrors(providedtherewasawaytodetectandeithercorrectoreliminatethem).1.3.4LowProbabilityofFalseDetection8212;TheIDEisatrueconcentrationconsistentwithameasuredconcentrationthreshold(criticalmeasuredvalue)thatwillprovideahighprobability,99%,oftruenondetection(alowprobabilityoffalsedetection,945;=1%).Thus,whenmeasuringablanksample,theprobabilityofnotdetectingtheanalytewouldbe99%.Tobeuseful,thismustbedemonstratedfortheparticularmatrixbeingused,andnotjustforreagentwater.1.3.5LowProbabilityofFalseNondetection8212;TheIDEshouldbeatrueconcentrationatwhichthereisahighprobability,atleast95%,oftruedetection(a......
【中国标准分类号】:A50
【国际标准分类号】:17_020
【页数】:13P.;A4
【正文语种】:
【英文标准名称】:StandardSpecificationforHot-Mixed,Hot-LaidBituminousPavingMixtures
【原文标准名称】:热搅拌热铺的沥青铺砌混合物标准规范
【标准号】:ASTMD3515-2001
【标准状态】:作废
【国别】:
【发布日期】:2001
【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】:D04.23
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:道路;施工材料;沥青
【英文主题词】:aggregates;bitumen;bituminousmixtures;hot-laid;hot-mixed;mixingplant;sampling;specification;testing;NumberCode91.100.50(Binders.Sealingmaterials);93.080.20(Roadconstructionmaterials)
【摘要】:1.1Thisspecificationcovershot-mixed,hot-laidasphalt,tar,emulsifiedasphalt,andrecycledbituminouspavingmixturesforbase,binder,leveling,andsurfacecourses.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.
【中国标准分类号】:E43
【国际标准分类号】:91_100_50;93_080_20
【页数】:5P.;A4
【正文语种】: