【英文标准名称】:Measurementofradioactivityintheenvironment-Air:radon-222-Part1:Originsofradonanditsshort-liveddecayproductsandassociatedmeasurementmethods
【原文标准名称】:环境辐射性测量.空气:氡-222.第1部分:氡及其短寿命衰变产物的来源及相关测量方法
【标准号】:ISO11665-1-2012
【标准状态】:现行
【国别】:国际
【发布日期】:2012-07
【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/TC85
【标准类型】:()
【标准水平】:()
【中文主题词】:空气;大气污染;大气;环境污染物;污染物;定义(术语);环境;气体;0族元素;测量;测量设备;测量仪器;测量技术;测量方法;计量学;放射性;放射性同位素;放射能;氡;试样;取样;抽样方法;试验
【英文主题词】:Air;Airpollution;Atmosphere;Atmosphericpollutants;Contamination;Definitions;Environment;Gases;Group0elements;Measurement;Measuringequipment;Measuringinstructions;Measuringtechniques;Methodsformeasuring;Metrology;Radioactive;Radioactiveisotopes;Radioactivity;Radon;Samples;Sampling;Samplingmethods;Testing
【摘要】:
【中国标准分类号】:F74
【国际标准分类号】:17_240
【页数】:30P;A4
【正文语种】:英语


【英文标准名称】:Internetprotocol(IP)andtransportstream(TS)basedserviceaccess(TS)(IEC62455:2007),TextinEnglish
【原文标准名称】:网际协议(IP)和基于服务访问的传输流(TS)
【标准号】:DINIEC62455-2008
【标准状态】:作废
【国别】:德国
【发布日期】:2008-02
【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】:可及性;广播;编码;密码;数据保护;译码;定义;数字广播;数字数据;数字工程;数字视频广播;DVB;电气工程;电子工程;电子仪器;英语;交互式的;网际协议;IP;动态图像专家组;多媒体;保护设备;保护措施;协议;服务设施;规范(验收);传输系统
【英文主题词】:Accessibility;Broadcasting;Coding;Cryptographic;Dataprotection;Decoding;Definition;Definitions;Digitalbroadcasting;Digitaldata;Digitalengineering;DigitalVideoBroadcast;DVB;Electricalengineering;Electronicengineering;Electronicinstruments;Englishlanguage;Interactive;InternetProtocol;IP;MPEG;Multimedia;Protectiondevices;Protectivemeasures;Protocols;Services;Specification(approval);Transmissionsystems
【摘要】:ThisInternationalStandardspecifiestheterminalforaservicepurchaseandprotectionsystemfordigitalbroadcasts,calledthe18Cryptsystem.Itisapplicableinallcountriesandregionswithsuitablycompliantbroadcastingandmultimediadistributionsystems.Guidelinesforcompatiblebroadcastservicesaregiveninthisstandard.Theservicepurchaseandprotectionfunctionsoperateinapurebroadcastenvironmentthatmaybecombinedwithabi-directionalinteractivitychannel.Thisstandardisapplicabletothefollowingbroadcastsystems.a)IPDCoverDVB-Hsystems~/IPdatacastoverDVB-Hisanend-to-endbroadcastsystemfordeliveryofanytypeofdigitalcontentandservicesusingIP-basedmechanismsoptimizedfordeviceswithlimitationsoncomputationalresourcesandbattery.AninherentpartoftheIPdatacastsystemisthatitcomprisesaunidirectionalDVBbroadcastpaththatmaybecombinedwithabi-directionalmobile/cellularinteractivitypath.IPdatacastisthusaplatformthatcanbeusedforenablingtheconvergenceofservicesfrombroadcast/mediaandtelecommunicationsdomains(forexample,mobile/cellular).ThisstandardspecifiesservicepurchaseandprotectionforIPdatacastoverDVB-Hsystems(seeB.10.3foranoverviewofreferences).b)DVBT/CISsystemsDVBT/CISsystemsareend-to-endbroadcastsystemsforaudio/videodatathatemployanMPEG2transportstreamanduseterrestrial,cableorsatellitebroadcastnetworks.Thisstandardspecifiesasystemfortheprotectionofthesebroadcastsinapurebroadcastenvironment.Inaddition,thisstandardspecifieshowpurchasing,keymanagementandregistrationmaybecarriedoutoveranoptionalinteractivitychannel.TheprotectiontechnologiesofferedbythisstandardaredesignedtooperatewithinanexistingDVBSimulCryptenvironment(seeB.10.2foranoverviewofreferences).c)MPEG2TS-basedIPsystemsMPEG2TS-basedIPsystemsemploybi-directionalIPnetworksforthe(broadcast)deliveryofMPEG2transportstreams.Thisstandardspecifiesasystemforthepurchaseandprotectionofservicesandcontentdeliveredviathesenetworks.Thisstandardisapplicableto,forexample,DVB-IPIsystems(seeB.10.4foranoverviewofreferences).d)Non-MPEG2TS-basedIPsystemsNon-MPEG2TS-basedIPsystemsemploybi-directionalIPnetworksforthe(broadcast)deliveryofaudio/videoorotherdatausingIPprotocolsinsteadofanMPEG2transportstream.Thisstandardspecifiesasystemforthepurchaseandprotectionofservicesandcontentdeliveredviathesenetworks(seeB.10.4foranoverviewofreferences).
【中国标准分类号】:M60
【国际标准分类号】:33_170
【页数】:407P.;A4
【正文语种】:英语