ISO/IEC 14496-3 Technical Corrigendum 4-2008 信息技术.音频-可视对象的编码.第3部分:音频.技术勘误4
作者:标准资料网 时间:2024-04-28 06:15:38 浏览:9519
来源:标准资料网
【英文标准名称】:Informationtechnology-Codingofaudio-visualobjects-Part3:Audio;TechnicalCorrigendum4
【原文标准名称】:信息技术.音频-可视对象的编码.第3部分:音频.技术勘误4
【标准号】:ISO/IEC14496-3TechnicalCorrigendum4-2008
【标准状态】:作废
【国别】:国际
【发布日期】:2008-04
【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/IECJTC1/SC29
【标准类型】:()
【标准水平】:()
【中文主题词】:声信号;代码表示;编码(数据转换);计算机制图;数据处理;编码;(数据)格式;图像处理;信息交换;信息技术;MPEG;多媒体;对象;视频信号
【英文主题词】:Acousticsignals;Codedrepresentation;Coding(dataconversion);Computergraphics;Dataprocessing;Encoding;Formats;Imageprocessing;Informationinterchange;Informationtechnology;MPEG;Multimedia;Object;Videosignals
【摘要】:ThisstandardisInformationtechnology-Codingofaudio-visualobjects-Part3:Audio;TechnicalCorrigendum4.
【中国标准分类号】:L81
【国际标准分类号】:35_040
【页数】:9P.;A4
【正文语种】:英语
【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】:
【英文标准名称】:Dentistry-Qualityassuranceduringlaserwelding-Part1:Laserweldingindentallaboratories
【原文标准名称】:牙科技术.激光焊接过程的质量保证.第1部分:牙科实验室的激光焊接
【标准号】:DIN13972-1-2001
【标准状态】:作废
【国别】:德国
【发布日期】:2001-12
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:合格;牙科设备;牙科学;焊接接头;激光焊接;合金;质量保证;激光器;实验室;人员;规范(验收)
【英文主题词】:Alloys;Dentalequipment;Dentistry;Laboratories;Laserwelding;Lasers;Personnel;Qualifications;Qualityassurance;Specification(approval);Weldedjoints
【摘要】:Thedocumentdealswiththequalityassuranceduringlaserweldingindentallaboratories(requirementsandtestmethods).
【中国标准分类号】:C33
【国际标准分类号】:13_060_01
【页数】:6P.;A4
【正文语种】:德语
