IEC 61290-11-2-2005 光学放大器.试验方法.第11-2部分:偏振模式分散参数.Poincare球面分析方法
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【英文标准名称】:Opticalamplifiers-Testmethods-Part11-2:Polarizationmodedispersionparameter-Poincarésphereanalysismethod
【原文标准名称】:光学放大器.试验方法.第11-2部分:偏振模式分散参数.Poincare球面分析方法
【标准号】:IEC61290-11-2-2005
【标准状态】:现行
【国别】:国际
【发布日期】:2005-03
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/SC86C
【标准类型】:()
【标准水平】:()
【中文主题词】:放大器;数学计算;光波导;半导体;光学;光弹法;光纤;纤维;试验;分散;电气工程;偏振;POINCAR;波长;分析;光学仪器
【英文主题词】:Amplifiers;Analysis;Dispersion;Electricalengineering;Fibreoptics;Fibres;Mathematicalcalculations;Opticaldevices;Opticalwaveguides;Optics;Photoelasticmethods;Poincaré;Polarizationmodedispersion;Polarization(wavephysics);Semiconductors;Testing;Wavelengths
【摘要】:Appliestoallcommerciallyavailableopticalamplifiers(OAs)includingopticalfibreamplifiers(OFAs)usingactivefibresandsemiconductoropticalamplifiers(SOAs)usingsemiconductorgainmedia.
【中国标准分类号】:M33
【国际标准分类号】:33_180_30
【页数】:24P.;A4
【正文语种】:英语
【英文标准名称】:Electriccables-Calculationofthecurrentrating-Currentratingequations(100%loadfactor)andcalculationoflosses-Currentsharingbetweenparallelsingle-corecablesandcalculationofcirculatingcurrentlosses
【原文标准名称】:电缆.电流定额的计算.电流定额公式(100%负载因数)和损耗的计算.并联单芯电缆间的电流分配和环流损耗的计算
【标准号】:BSIEC60287-1-3-2003
【标准状态】:现行
【国别】:英国
【发布日期】:2003-10-15
【实施或试行日期】:2003-10-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:电缆护套;电流定额;电缆;涡流损耗;数学计算;高压引线;电气工程;载流量
【英文主题词】:Cablesheaths;Cables;Currentcarryingcapacity;Currentratings;Eddycurrentlosses;Electriccables;Electricalengineering;Hightensionleads;Mathematicalcalculations
【摘要】:Providesamethodforcalculatingthephasecurrentsandcirculatingcurrentlossesinsingle-corecablesarrangedinparallel.Themethoddescribedinthisstandardcanbeusedforanynumberofcablesperphaseinparallelinanyphysicallayout.Thephasecurrentscanbecalculatedforanyarrangementofsheathbonding.Forthecalculationofsheathlosses,itisassumedthatthesheathsarebondedatbothends.AmethodforcalculatingsheatheddycurrentlossesintwocircuitsinflatformationisgiveninIEC60287-1-2.
【中国标准分类号】:K13
【国际标准分类号】:29_060_20
【页数】:24P;A4
【正文语种】:英语
【英文标准名称】:Informationtechnology-Securitytechniques-Keymanagement-Part3:Mechanismsusingasymmetrictechniques
【原文标准名称】:信息技术.安全技术.密钥管理.第3部分:使用不对称技术的机制
【标准号】:ISO/IEC11770-3-2008
【标准状态】:现行
【国别】:国际
【发布日期】:2008-07
【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/IECJTC1/SC27
【标准类型】:()
【标准水平】:()
【中文主题词】:算法;不对称的;校验;代号系统;编码;密码;数据处理;数据保护;数据传输;定义;信息交换;信息技术;IT安全;安全工程
【英文主题词】:Algorithms;Asymmetrical;Authentication;Codesystems;Coding;Cryptographic;Dataprocessing;Dataprotection;Datatransmission;Definitions;Informationinterchange;Informationtechnology;ITsecurity;Safetyengineering
【摘要】:ThispartofISO/IEC11770defineskeymanagementmechanismsbasedonasymmetriccryptographictechniques.Itspecificallyaddressestheuseofasymmetrictechniquestoachievethefollowinggoals.1)EstablishasharedsecretkeyforasymmetriccryptographictechniquebetweentwoentitiesAandBbykeyagreement.Inasecretkeyagreementmechanism,thesecretkeyistheresultofadataexchangebetweenthetwoentitiesAandB.Neitherofthemcanpredeterminethevalueofthesharedsecretkey.2)EstablishasharedsecretkeyforasymmetriccryptographictechniquebetweentwoentitiesAandBbykeytransport.Inasecretkeytransportmechanism,thesecretkeyischosenbyoneentityAandistransferredtoanotherentityB,suitablyprotectedbyasymmetrictechniques.3)Makeanentity'spublickeyavailabletootherentitiesbykeytransport.Inapublickeytransportmechanism,thepublickeyofentityAmustbetransferredtootherentitiesinanauthenticatedway,butnotrequiringsecrecy.SomeofthemechanismsofthispartofISO/IEC11770arebasedonthecorrespondingauthenticationmechanismsinISO/IEC9798-3.ThispartofISO/IEC11770doesnotcoveraspectsofkeymanagementsuchas--keylifecyclemanagement,--mechanismstogenerateorvalidateasymmetrickeypairs,--mechanismstostore,archive,delete,destroy,etc.keys.WhilethispartofISO/IEC11770doesnotexplicitlycoverthedistributionofanentity'sprivatekey(ofanasymmetrickeypair)fromatrustedthirdpartytoarequestingentity,thekeytransportmechanismsdescribedcanbeusedtoachievethis.Aprivatekeycaninallcasesbedistributedwiththesemechanismswhereanexisting,non-compromisedkeyalreadyexists.However,inpracticethedistributionofprivatekeysisusuallyamanualprocessthatreliesontechnologicalmeanslikesmartcards,etc.ThispartofISO/IEC11770doesnotcovertheimplementationsofthetransformationsusedinthekeymanagementmechanisms.NOTEToachieveauthenticityofkeymanagementmessages,itispossibletomakeprovisionsforauthenticitywithinthekeyestablishmentprotocolortouseapublickeysignaturesystemtosignthekeyexchangemessages.
【中国标准分类号】:L04
【国际标准分类号】:35_040
【页数】:89P.;A4
【正文语种】:英语
