ISO/IEC TR 24774-2010 软件和系统工程.生命周期管理.过程描述导则
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【英文标准名称】:Systemsandsoftwareengineering-Lifecyclemanagement-Guidelinesforprocessdescription
【原文标准名称】:软件和系统工程.生命周期管理.过程描述导则
【标准号】:ISO/IECTR24774-2010
【标准状态】:现行
【国别】:国际
【发布日期】:2010-09
【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/SC7
【标准类型】:()
【标准水平】:()
【中文主题词】:计算机应用;计算机;数据处理;定义;描述;电气工程;电气设备;电气安全性;电子设备;电子系统;信息处理;检验;寿命周期;过程;过程控制;工艺管理;程序系统;程序控制系统;程序设计;程序设计技术;可靠性;安全性;安全装置;安全工程;安全措施;安全性要求;安全研究;安全系统;软件;软件技术;监督(认可);系统工程;测试
【英文主题词】:Computerapplications;Computers;Dataprocessing;Definitions;Descriptions;Electricalengineering;Electricalequipment;Electricalsafety;Electronicequipment;Electronicsystems;Informationprocessing;Inspection;Lifecycles;Process;Processcontrol;Processmanagement;Programsystem;Programmedcontrolsystems;Programming;Programmingtechniques;Reliability;Safety;Safetydevices;Safetyengineering;Safetymeasures;Safetyrequirements;Safetystudies;Safetysystems;Software;Softwaretechniques;Surveillance(approval);Systemengineering;Testing
【摘要】:
【中国标准分类号】:L77
【国际标准分类号】:35_080
【页数】:15P;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforHeatRelease,FlameSpread,SmokeObscuration,andMassLossTestingofInsulatingMaterialsContainedinElectricalorOpticalFiberCablesWhenBurninginaVerticalCableTrayConfiguration
【原文标准名称】:电缆或光缆的绝缘材料在立式电缆槽结构中燃烧时的热释放、展焰性、烟昏暗度和质量损失试验的标准试验方法
【标准号】:ASTMD5537-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:D09.21
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:cable;cabletray;calorimetry;carbondioxide;carbonmonoxide;char;electricalcable;electricalinsulation;fire;fire-testresponse;flame;heatrelease;heatreleaserate;ignition;opticaldensity;opticalfibercable;oxygenconsumptioncalorimetr
【摘要】:Thistestmethodprovidesameanstomeasureavarietyoffire-test-responsecharacteristicsassociatedwithheatandsmokereleaseandresultingfromburningthematerialsinsulatingelectricaloropticalfibercables,whenmadeintocablesandinstalledonaverticalcabletray.Thespecimensareallowedtoburnfreelyunderwellventilatedconditionsafterignitionbymeansofapropanegasburner.Therateofheatreleaseoftenservesasanindicationoftheintensityofthefiregenerated.GeneralconsiderationsoftheimportanceofheatreleaseratearediscussedinAppendixX1andconsiderationsforheatreleasecalculationsareinAppendixX2.Otherfire-test-responsecharacteristicsthataremeasurablebythistestmethodareusefultomakedecisionsonfiresafety.Thetestmethodisalsousedformeasuringsmokeobscuration.Theapparatusdescribedhereisalsousefultomeasuregaseouscomponentsofsmoke;themostimportantgaseouscomponentsofsmokearethecarbonoxides,presentinallfires.Thecarbonoxidesaremajorindicatorsofthecompletenessofcombustionandareoftenusedaspartoffirehazardassessmentcalculationsandtoimprovetheaccuracyofheatreleasemeasurements.TestLimitations:Thefire-test-responsecharacteristicsmeasuredinthistestarearepresentationofthemannerinwhichthespecimenstestedbehaveundercertainspecificconditions.Donotassumetheyarerepresentativeofagenericfireperformanceofthematerialstestedwhenmadeintocablesoftheconstructionunderconsideration.Inparticular,itisunlikelythatthistestisanadequaterepresentationofthefirebehaviorofcablesinconfinedspaces,withoutabundantcirculationofair.Thisisanintermediate-scaletest,andthepredictabilityofitsresultstolargescalefireshasnotbeendetermined.Someinformationexiststosuggestvalidationwithregardtosomelarge-scalescenarios.1.1Thisisafire-test-responsestandard.1.2Thistestmethodprovidesameanstomeasuretheheatreleasedandsmokeobscurationbyburningtheelectricalinsulatingmaterialscontainedinelectricaloropticalfibercableswhenthecablespecimens,excludingaccessories,aresubjectedtoaspecifiedflamingignitionsourceandburnfreelyunderwellventilatedconditions.Flamepropagationcabledamage,bycharlength,andmasslossarealsomeasured.1.3Thistestmethodprovidestwodifferentprotocolsforexposingthematerials,whenmadeintocablespecimens,toanignitionsource(approximately20kW),fora20mintestduration.Useittodeterminetheheatrelease,smokerelease,flamepropagationandmasslosscharacteristicsofthematerialscontainedinsingleandmulticonductorelectricaloropticalfibercables.1.4Thistestmethoddoesnotprovideinformationonthefireperformanceofmaterialsinsulatingelectricaloropticalfibercablesinfireconditionsotherthantheonesspecificallyusedinthistestmethodnordoesitmeasurethecontributionofthematerialsinthosecablestoadevelopingfirecondition.1.5Datadescribingtheburningbehaviorfromignitiontotheendofthetestareobtained.1.6Thistestequipmentissuitableformeasuringtheconcentrationsofcertaintoxicgasspeciesinthecombustiongases(seeAppendixX4).1.7ThevaluesstatedinSIunitsaretoberegardedasstandard(see).Thevaluesgiveninparenthesesaremathematicalconversionstoinch-poundunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.8Thisstandardmeasuresanddescribestheresponseofmaterials,pr......
【中国标准分类号】:K15
【国际标准分类号】:
【页数】:21P.;A4
【正文语种】:英语
【英文标准名称】:BulkImageandDataSchema
【原文标准名称】:批量图像和数据模式
【标准号】:ANSIX9.100-182-2011
【标准状态】:现行
【国别】:美国
【发布日期】:2011
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:字符集;代码;批量数据;信息;层
【英文主题词】:Charactersets;Codes;Imagedata;Information;Layers
【摘要】:Organizationsreceivingimagesfrommultiplesourcesgenerallyarenotequippedtorecognizealltheimagesreceivedbecausevendorsusediverseimagecompressionandimagefileformats.Thismedia-basedimageexchangeformatwillstandardizetheexportandimportofimagedataregardlessofwhattypeofhardware/softwarewasusedtocapture,storeorexporttheimages.
【中国标准分类号】:L71
【国际标准分类号】:35_040
【页数】:
【正文语种】:英语
