ISO 9767-1990 摄影投影器性能特性测量和记录方法
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来源:标准资料网
【英文标准名称】:Photographie;overheadprojectors;methodsformeasuringandreportingperformancecharacteristics
【原文标准名称】:摄影投影器性能特性测量和记录方法
【标准号】:ISO9767-1990
【标准状态】:作废
【国别】:国际
【发布日期】:1990-12
【实施或试行日期】:1990-12-15
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC42
【标准类型】:()
【标准水平】:()
【中文主题词】:电影放映机;性能试验;摄影设备;摄影;试验;测量技术
【英文主题词】:
【摘要】:Specifiesmethodsofmeasurementforlightoutput,uniformityofscreenillumination,pictureoutlinedistortion,maximumavailableprojectionelevationandtemperatureriseontheprojectionstagesofoverheadprojectors.Includesaformofreportingtheresultsofthemeasurements.
【中国标准分类号】:N42
【国际标准分类号】:37_040_10
【页数】:6P;A4
【正文语种】:英语
基本信息
| 标准名称： | LZ-120 立爪装载机 产品质量分等 |
| 中标分类： |
矿业 >>
矿山机械设备 >>
采掘设备 |
| 替代情况： | JB/T 53509-1994 |
| 发布日期： | 1999-06-09 |
| 实施日期： | 2000-01-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 12页 |
适用范围
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前言
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目录
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引用标准
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所属分类： 矿业 矿山机械设备 采掘设备
【英文标准名称】:StandardGuideforUsingProbabilitySamplingMethodsinStudiesofIndoorAirQualityinBuildings
【原文标准名称】:建筑物中室内空气质量研究用概率取样法的标准导则
【标准号】:ASTMD5791-1995(2006)
【标准状态】:现行
【国别】:
【发布日期】:1995
【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】:D22.05
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:随机取样;室内空气分析;概率取样;试验性采样;建筑物中室内空气质量研究;概率取样法;环境监测设备;导则
【英文主题词】:indoorairquality;probabilitysamplingmethods;randomsampling;surveysampling
【摘要】:Studiesofindoorairproblemsareofteniterativeinnature.Athoroughengineeringevaluationofabuilding(1-4)3issometimessufficienttoidentifylikelycausesofindoorairproblems.Whentheseinvestigationsandsubsequentremedialmeasuresarenotsufficienttosolveaproblem,moreintensiveinvestigationsmaybenecessary.Thisguideprovidesthebasisfordeterminingwhenprobabilitysamplingmethodsareneededtoachievestatisticallydefensibleinferencesregardingthegoalsofastudyofindoorairquality.Theneedforprobabilitysamplingmethodsinastudyofindoorairqualitydependsonthespecificobjectivesofthestudy.Suchmethodsmaybeneededtoselectasampleofpeopletobeaskedquestions,examinedmedically,ormonitoredforpersonalexposures.Theymayalsobeneededtoselectasampleoflocationsinspaceandtimetobemonitoredforenvironmentalcontaminants.Thisguideidentifiesseveralpotentialobstaclestoproperimplementationofprobabilitysamplingmethodsinstudiesofindoorairqualityinbuildingsandpresentsproceduresthatovercomethoseobstaclesoratleastminimizetheirimpact.Althoughthisguidespecificallyaddressessamplingpeopleorlocationsacrosstimewithinabuilding,italsoprovidesimportantguidanceforstudyingpopulationsofbuildings.Theguidanceinthisdocumentisfullyapplicabletosamplinglocationstodetermineenvironmentalqualityorsamplingpeopletodetermineenvironmentaleffectswithineachbuildinginthesampleselectedfromalargerpopulationofbuildings.1.1Thisguidecoverscriteriafordeterminingwhenprobabilitysamplingmethodsshouldbeusedtoselectlocationsforplacementofenvironmentalmonitoringequipmentinabuildingortoselectasampleofbuildingoccupantsforquestionnaireadministrationforastudyofindoorairquality.Someofthebasicprobabilitysamplingmethodsthatareapplicableforthesetypesofstudiesareintroduced.1.2Probabilitysamplingreferstostatisticalsamplingmethodsthatselectunitsforobservationwithknownprobabilities(includingprobabilitiesequaltooneforacensus)sothatstatisticallydefensibleinferencesaresupportedfromthesampletotheentirepopulationofunitsthathadapositiveprobabilityofbeingselectedintothesample.1.3Thisguidedescribesthosesituationsinwhichprobabilitysamplingmethodsareneededforascientificstudyoftheindoorairqualityinabuilding.Forthosesituationsforwhichprobabilitysamplingmethodsarerecommended,guidanceisprovidedonhowtoimplementprobabilitysamplingmethods,includingobstaclesthatmayarise.Examplesoftheirapplicationareprovidedforselectedsituations.Becausesomeindoorairqualityinvestigationsmayrequireapplicationofcomplex,multistage,surveysamplingproceduresandbecausethisstandardisaguideratherthanapractice,thereferencesinAppendixX1arerecommendedforguidanceonappropriateprobabilitysamplingmethods,ratherthanincludingexpositionsofsuchmethodsinthisguide.
【中国标准分类号】:Z15
【国际标准分类号】:13_040_01
【页数】:9P.;A4
【正文语种】:
