ANSI/ASTM A852/A 852M-2001 最小屈服强度为70Ksi(485MPa),厚度为4英寸(100mm)的经淬火和回火的低合金结构钢板规范

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【英文标准名称】:SpecificationforQuenchedandTemperedLow-AlloyStructuralSteelPlatewith70Ksi(485Mpa)MinimumYieldStrengthto4in(100mm)Thick
【原文标准名称】:最小屈服强度为70Ksi(485MPa),厚度为4英寸(100mm)的经淬火和回火的低合金结构钢板规范
【标准号】:ANSI/ASTMA852/A852M-2001
【标准状态】:作废
【国别】:美国
【发布日期】:2001
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:结构钢;钢;板材
【英文主题词】:boards;steels;structuralsteels
【摘要】:
【中国标准分类号】:H46
【国际标准分类号】:77_140_50
【页数】:
【正文语种】:英语


【英文标准名称】:StandardGuideforSelectionofSecurityTechnologyforProtectionAgainstCounterfeiting,Alteration,Diversion,Duplication,Simulation,andSubstitution(CADDSS)ofProductsorDocuments
【原文标准名称】:产品和文献的防假冒、改造、变更、重复、伪装和替换的保密技术的选择标准指南
【标准号】:ASTMF1448-1993a(2006)
【标准状态】:现行
【国别】:
【发布日期】:1993
【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】:F12.60
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:版权;产品;文献
【英文主题词】:CADDSS;counterfeitprotection;productprotection;security;securityanalysis
【摘要】:Thisguideisthefirstknownattempttofocusonsecurityrequirementsandcomparethemtoavailableandknowntechnologiescapableofmeetingtheserequirements.Thisguideprovidesforthefollowingthreesteps:5.1.1Theuserdevelopsadetailedmatrixanalysis(seeTable1)toidentifyspecificsecurityrequirements.5.1.2Theuserobtainsasimilarmatrixthatidentifiesthecapabilitiesofavailabletechnologiestosatisfyspecificsecurityrequirements.Thismatrixcanbepreparedbytheuser,byasecurityconsultant,orbyatechnologyvendor.Iftheuserdesires,theavailabletechnologiesmatrixcanbetestedandevaluatedbyaforensiclaboratory.5.1.3Theusercomparesthesetwomatricesinordertoselectoneormoretechnologiesthatmostcloselyaccommodatestheuserrsquo;specificsecurityrequirements.1.1Thisguideisintendedtoassisttheuserintheselectionofanticounterfeitingtechnologyasfollows:1.1.1Bydeterminingwhattheuser''srequirementsareasrelatedtoproductordocumentbycompletingtheuser''sspecificCADDSSversusparametersmatrix,and1.1.2Bycomparingtheuser''srequirementsmatrixtoasecuritytechnologyfeaturematrixpreparedbyaknowledgeablepersonusingtheCADDSSversusparametersmatrix.1.2Thisguidedoesnotaddressorevaluatespecifictechnologies,butratherprovidesapathwhenutilizingthematrixinthatallowsproperevaluationoffeaturesoftechnologiesavailableforuseintheapplication.1.3Thisguideprovidesaproceduretoaccomplishtheproperselectionofasecuritysystem.Specifictechnologiesarenotaddressed,norisanytechnologyrecommended.Therearemanysecuritysystemsavailableinthepublicmarketplacetoday.Eachhaslimitationsandmustbecarefullymeasuredagainsttheparameterspresentedinthisguide.Oncethiscarefulanalysisisdone,theuserwillbeinaknowledgeablepositiontoselectasecuritysystemtomeethisneeds.
【中国标准分类号】:J04
【国际标准分类号】:
【页数】:3P.;A4
【正文语种】:


【英文标准名称】:Real-timeethernet-Real-timeautomationprotocolforindustrialethernet(RAPIEnet)
【原文标准名称】:实时以太网.工业以太网用实时自动协议(RAPIEnet)
【标准号】:IEC/PAS62573-2008
【标准状态】:作废
【国别】:国际
【发布日期】:2008-03
【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/SC65C
【标准类型】:()
【标准水平】:()
【中文主题词】:应用层;体系机构;自动化;电路网络;数据电路;数据通信;数据链层;数据网络;数据处理;数据传送;定义;以太网;信息技术;链路层;物理层;协议;实时的;传输协议
【英文主题词】:Applicationlayer;Architecture(IT);Automation;Circuitnetworks;Datacircuit;Datacommunication;Datalinklayers;Datanetwork;Dataprocessing;Datatransfer;Definitions;Ethernet;Informationtechnology;Linklayers;Physicallayers;Protocols;Real-time;Transmissionprotocol
【摘要】:Inindustrialcontrolsystems,severaltypesoffielddevicesmaybeconnectedtocontrolnetworks.Theseincludedrives,sensorsandactuators,programmablecontrollers,distributedcontrolsystems,andhuman-machineinterfacedevices.Theprocesscontroldataandthestatedataaretransferredamongthesefielddevicesinthesystem,andthecommunicationsbetweenthesefielddevicesrequiressimplicityinapplicationprogrammingtobeexecutedwithadequateresponsetime.Inmostindustrialautomationsystems,thecontrolnetworkisrequiredtoprovidetime-deterministicandpredictableresponsecapabilityforapplications.Plantproductionmaybecompromisedduetoerrorsthatcouldbeintroducedintothecontrolsystemifthenetworkdoesnotprovideatime-deterministicresponse.Therefore,thefollowingcharacteristicsarerequiredforareal-timeEthernet-basedcontrolnetwork:a)atime-deterministicresponsetimebetweenthecontroldevices;b)theabilitytoshareprocessdataseamlesslyacrossthecontrolsystem.RAPIEnetisapplicabletosuchanindustrialautomationenvironmentinwhichtimedeterministicreal-timecommunicationsareafundamentalrequirement.ThisPASspecifiestheprotocolsetnecessaryforRAPIEnet,specificallyforthedatalinklayerandtheapplicationlayer,whichismappedontopofthedatalinklayer,toexploittheservicesinaccordancewiththethree-layerfieldbusreferencemodel,whichisbasedinpartontheOSIBasicReferenceModel.Bothreferencemodelssubdividetheareaofstandardizationforinterconnectionintoaseriesoflayersofmanageablesize.ThroughoutthisPAS,theterm"service"referstotheabstractcapabilityprovidedbyonelayeroftheOSIBasicReferencemodeltothelayerimmediatelyabove.ThisPASconsistsofa)physicallayerspecification;b)datalinklayerservicedefinitions;c)datalinklayerprotocolspecification;d)applicationlayerservicedefinitions;e)applicationlayerprotocolspecification.TheserviceofboththedatalinkandtheapplicationlayerinthisPASisaconceptualarchitecturalservice,independentofadministrativeandimplementationdetails.ThedatalinklayerdescribestheextensionoftheISO/IEC8802-3datalinklayerforRAPIEnet,andtheapplicationlayerdescribestheutilizationoftheupperlayerfunctionsovertheRAPIEnetdatalinklayerprotocol.
【中国标准分类号】:M11
【国际标准分类号】:25_040_40;33_040_40;35_110
【页数】:247P.;A4
【正文语种】:英语