【英文标准名称】:Transportinformationandcontrolsystems-Referencemodelarchitecture(s)fortheTICSsector-Part3:Exampleelaboration
【原文标准名称】:交通信息与控制系统TICS体系框架模型第3部分:例子的详细叙述
【标准号】:ISO/TR14813-3-2000
【标准状态】:现行
【国别】:国际
【发布日期】:2000-12
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC204
【标准类型】:()
【标准水平】:()
【中文主题词】:交通控制系统;情报系统;警告装置;定义;运输工具(施工工作);规范(验收);道路运输;信号系统;参考模型
【英文主题词】:definitions;warningdevices;trafficcontrolsystem;informationsystems;definition;transportfacilities(constructionworks);signalsystems;referencemodel;roadtransport;specification(approval)
【摘要】:Thearchitectureofaninformationandcontrolsystemmergeshardwareandsoftwareconsiderationsintoacoordinatedandintegratedsystemview.Thesystemarchitectureisahighlevelabstraction,ormodel,ofthesystem.Asystemarchitectureshouldembracebothtoday'sapplicationsandtheapplicationsthatareexpectedinthefuture.Architecturebeginswiththedefinitionoftheconceptualservices(e.g.Part1-TICSFundamentalServices).Thereareseveralidentifiablestagesofsystemarchitecturedevelopment.a)Referencearchitectureb)Logicalarchitecturec)PhysicalarchitectureAreferencearchitectureisthefirstofallarchitectures.Itisaconcisegenericframeworkwhichguidesthedevelopmentofmoreconcretesystemarchitectures.Itislargeenoughthatdistinctconceptsarenotmergedoutofnecessityandsmallenoughthatitdoesnotbecomeunwieldy.AmostsignificantexampleofareferencearchitectureininformationsystemsistheReferenceModelofOpenSystemsInterconnection(oftencalledthesevenlayermodel)developedbyISOinthe1970's.Thismodelhasunderpinnedthedevelopmentofallmoderncomputernetworks,allowingservicessuchasglobalnetworking,ofwhichtheprimeexampleistheInternet,tobecomeareality.Areferencearchitectureisgenericandnon-prescriptiveandcapturestheconceptsofthesystem.Alogicalarchitectureelaboratestheconceptualbehaviour,andinsodoingitprovidesmoredetailaboutthemodularity.Aphysicalarchitectureisreachedwhentheactualdistributionofthesystemmodulesisdefined,thusleadingtoimportantimplicationsforcommunications.Thereisnofirmdemarcationbetweenareferencearchitectureandalogicalarchitecture.Thustheessenceofbehaviourandmodularityispresentinareferencearchitecture.TheTICSReferenceArchitecturedevelopedbyWG1showsimportantinter-relationshipsthatariseintheprovisionoftheservicesofthesector.HowevertheTICSReferenceArchitectureismoreabstractthan,forexample,thelogicalarchitectureoftheUSNationalArchitecture.ItisenvisionedthattheTICSReferenceArchitecturewillbeusedbytheTC204WorkingGroupstodeveloptheirownlogicalandphysicalarchitecturesinacohesivemanner.SomeTICSFundamentalServicesarealreadywelldevelopedbytheindustry,whileothersarelessmature.ThereforetheTICSReferenceArchitecturedoesnothaveauniformgranularityacrossallservices.Thischaracteristicisadirectresultoftheforementionedrequirementthatarchitectureembracetheapplicationsthatareintendedinthefuture.Thissuggestsoneofthewaysinwhichthearchitecturewillundergochangeinthefuture.Architecturesmaypresentonlystaticcharacteristicsorbothstaticanddynamiccharacteristics.Dynamiccharacteristicsmaybeseenasbelongingsolelytothedesign/implementationstagesofsystemdevelopment.Howeverbyincludingdynamiccharacteristicsatthereferencearchitecturestageonecangainimportantinsightsintothestaticarchitecture.Thustwoorthogonalviewsofarchitecturearepresented:a)staticrelationshipview(classdiagram)b)dynamicinteractiveview(sequencediagram)Part2developsaCoreTICSReferenceArchitecture.ThestaticscopeisdeterminedbyderivingthesystemboundaryandtheusecasesfromananalysisoftheTICSFundamentalServices(Part1).TheCoreReferenceArchitectureisareferenceforthedevelopmentofnationalarchitectures.ThisPartelaboratesthecorebyrefinementofthetwoorthogonalviews.TheelaborationcallsupondomainexpertisewhichwouldbeprovidedbyotherTC204WorkingGroupsinthedevelopmentofISOstandards,orbynationalgroupsdevelopingnationalarchitecturesandstandards.TheCoreReferenceArchitectureiselaboratedinClauses6to8.Clause5introducestheelaborationmethodemployed.Clause6elaboratestheclasses.Clause7elaboratesthesequencediagrams.Claus
【中国标准分类号】:R04
【国际标准分类号】:35_240_60
【页数】:176P;A4
【正文语种】:英语


Product Code:SAE AMS3904/5
Title:Yarn, Organic Fiber (Para-Aramid), Intermediate Modulus, 1500 Denier, (1670 Dtex), 0.9% Finish
Issuing Committee:Ams P Polymeric Materials Committee
Scope: This specification covers one type of organic (para-aramid) fiber in the form of yarn. The product shall be formed as a multiplicity of filaments drawn together and gathered into an approximately parallel arrangement.
Rationale: This specification covers one type of organic (para-aramid) fiber in the form of yarn. The product shall be formed as a multiplicity of filaments drawn together and gathered into an approximately parallel arrangement.