【英文标准名称】:Informationtechnology-Qualityofservice:Framework
【原文标准名称】:信息技术.服务质量:框架
【标准号】:BSISO/IEC13236-1999
【标准状态】:现行
【国别】:英国
【发布日期】:1999-05-15
【实施或试行日期】:1999-05-15
【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】:信息交流;协议;数据处理;管理;设计;合格;统计质量控制;术语;验证;词汇;消费者与供货者的关系;成本;开放系统互连;质量控制;管理作业;质量保证;质量;试验模型;数据传送;语义学;规范(验收);计算机应用;技术文献
【英文主题词】:Dataprocessing;Dataservices;Definition;Definitions;Informationinterchange;Informationtechnology;Networkinterconnection;OSI;Quality;Sectionalspecification
【摘要】:ThisQOSFrameworkisastructuredcollectionofconceptsandtheirrelationshipswhichdescribesQOS(QualityofService)andenablesthepartitioningof,andrelationshipsbetween,thetopicsrelevanttoQOSinInformationTechnology(IT)tobeexpressedbyacommonmeansofdescription.Inparticular,thisQOSFrameworkisdirectedatITsystemsandtheiruseinprovidingOpenDistributedProcessingservices.ThisQOSFrameworkisintendedtoassistthosedesigningandspecifyingITsystems,andthosedefiningcommunicationsservicesandprotocols,byprovidingguidanceonQOSapplicabletosystems,servicesandresourcesofvariouskinds.ItdescribeshowQOScanbecharacterized,howQOSrequirementscanbespecified,andhowQOScanbemanaged.ThisQOSFrameworkdefinesterminologyandconceptsforQOSinIT.ItintroducestheconceptofQOScharacteristics,whichrepresentthefundamentalaspectsofQOSthataretobemanagedinvariousways;anditdefinesanumberofQOScharacteristicsofparticularimportance.ThesedefinitionsareindependentofhowQOSisrepresentedorcontrolledinarealsystem.ThisFrameworkdescribeshowQOSrequirementscanbeexpressed,andidentifiesanumberofQOSmechanisms(suchasthree-partynegotiation)thatcanbeusedascomponentsofQOSmanagementfunctionstomeetQOSrequirementsofvariouskinds.Italsodescribesthecircumstancesinwhichvariouscombinationsofmechanismsmaybeappropriate.ThisQOSFrameworkprovidesabasisforthespecificationofextensionsandenhancementstoexistingorplannedstandards,asaresultoftheneedfor,andapplicationof,theQOSconceptsdefinedinthisRecommendation|InternationalStandard.ItisnottheintentofthisRecommendation|InternationalStandardtodestabiliseanyexistingRecommendations|InternationalStandards;rather,itisintendedthatthisQOSFrameworkmaybeusedby:·developersofneworrevisedIT-relatedstandardswhichdefineoruseQOSmechanisms;and·ITusersexpressingrequirementsforQOS.ThisQOSFrameworkdoesnotattempttoprovideabasisforthespecificationofperformanceobjectivesornetworksignallingofQOSinpubliccommunicationsnetworks.TheQOSaspectsofthesecommunicationsservicesareaddressedbyotherITU-TRecommendations.TheintentofthisRecommendation|InternationalStandardistoprovideacommonvocabularytobothserviceprovidersandserviceusers.NothinginthisRecommendation|InternationalStandardshouldbeconstruedasplacingrequirementsoneitherserviceprovidersorserviceusers.ItishopedthatacommonapproachandvocabularyforQOSwillassistmultipleserviceproviderstodeliverend-to-endQOStoend-systems.ThisQOSFrameworkspecificallyexcludesthedetailedspecificationofQOSmechanisms.ItisnottheintentofthisRecommendation|InternationalStandardtoserveasanimplementationspecification,tobeabasisforappraisingtheconformanceofimplementations,ortodefineparticularservicesandprotocols.Rather,itprovidesaconceptualandfunctionalframeworkforQOSwhichallowsindependentteamsofexpertstoworkproductivelyonthedevelopmentofRecommendations|InternationalStandards.AsappliedtoOSI,thisQOSFrameworkisconsistentwiththeOSIBasicReferenceModelinthatitdescribesoperationsandmechanismswhichareassignabletolayersasspecifiedintheOSIBasicReferenceModel.ItisconsistentwiththeOSIManagementFramework(seeITU-TRec.X.700|ISO/IEC7498-4)andtheSystemsManagementOverview(seeITU-TRec.X.701|ISO/IEC10040)initsassignmentoffunctionstomanagemententities.InAnnexA,thisQOSFrameworkpresentsamodelofQOSforOSIwhichidentifiestheentitiesthatparticipateinthemanagementofQOS,definestheflowofQOS-relatedinformationbetweenthemanddescribeshowthisinformationisused.
【中国标准分类号】:M11
【国际标准分类号】:35_100_05
【页数】:58P;A4
【正文语种】:英语


【英文标准名称】:Aerospace;hot-rolledsteelsheetandplate;dimensions,masses
【原文标准名称】:航空航天.热轧钢薄板材和中厚钢板材.尺寸、质量
【标准号】:DIN65390-1989
【标准状态】:现行
【国别】:德国
【发布日期】:1989-10
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:半成品;热加工;形状公差;热轧的;公差;尺寸;板材;尺寸公差;钢;薄板材;航天运输;材料;航空运输;航空航天运输;质量(物质)
【英文主题词】:boards;mass;hotrolled;aerospacetransport;sheetmaterials;formtolerances;spacetransport;airtransport;steels;dimensions;semi-finishedproducts;materials;tolerances(measurement);hot-working;sheets;
【摘要】:
【中国标准分类号】:V11
【国际标准分类号】:6035
【页数】:6P;A4
【正文语种】:德语