【英文标准名称】:Informationtechnology-CDIFframework-Part2:Modellingandextensibility
【原文标准名称】:信息技术.CDIF框架.第2部分:建模和可扩展性
【标准号】:ISO/IEC15474-2-2002
【标准状态】:现行
【国别】:国际
【发布日期】:2002-10
【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
【标准类型】:()
【标准水平】:()
【中文主题词】:数据处理;信息技术;数据传送;数据格式;信息交换;CDIF;数据模型;定义;铸模;数据库语言
【英文主题词】:CDIF;Dataformats;Datamodels;Dataprocessing;Datatransfer;Databaselanguages;Definition;Definitions;Informationinterchange;Informationtechnology;Modelling
【摘要】:TheCDIFfamilyofstandardsisprimarilydesignedtobeusedasadescriptionofamechanismfortransferringinformationbetweenmodellingtools.ItfacilitatesasuccessfultransferwhentheauthorsoftheimportingandexportingtoolshavenothingincommonexceptanagreementtoconformtoCDIF.TheCDIFfamilyofstandardsincludesasemanticmetamodelandatransferformatdefinition.Italsoincludesthespecificationofameta-metamodelandassociatedrulesthatdefineaframeworkforthesemanticmetamodelandthetransferformat.ThelanguagethatisdefinedforthetransferformatalsohasapplicabilityasagenerallanguageforImport/Exportforrepositories.TheCDIFsemanticmetamodelalsohasapplicabilityasthebasisofstandarddefinitionsforuseinrepositories.ThestandardsthatformthecompletefamilyofCDIFStandardsaredocumentedinISO/IEC15474-1:2002,Informationtechnology-CDIFframework-Part1:Overview.Thesestandardscovertheoverallframework,thetransferformatandtheCDIFsemanticmetamodel.ThediagraminFigure1depictsthevariousstandardsthatcomprisetheCDIFfamilyofstandards.TheshadedboxdepictsthisStandardanditspositionintheCDIFfamilyofstandards.Thisdocument(ISO/IEC15474-2:2002,Informationtechnology-CDIFframework-Part2:Modellingandextensibility)includesthedefinitionoftheCDIFmeta-metamodelanddescribestherulesandnotationsusedthroughouttheCDIFfamilyofstandards.TherulesforextendingtheCDIFsemanticmetamodelarealsodefined.Thisdocumentisintendedtobeusedbyanyonewishingtounderstandand/oruseCDIF.ThisdocumentprovidesanintroductiontotheentireCDIFfamilyofstandards.Itissuitablefor:—ThoseevaluatingCDIF,—ThosewhowishtounderstandtheprinciplesandconceptsofaCDIFtransfer,and—Thosedevelopingimportersandexporters.Thedocument,ISO/IEC15474-1:2002,Informationtechnology-CDIFframework-Part1:Overview,andthisframeworkdocumentISO/IEC15474-2:2002,Informationtechnology-CDIFframework-Part2:Modellingandextensibility,shouldbereadfirstwheninitiallyexploringCDIFandbeforeattemptingtoreadotherdocumentsintheCDIFfamilyofstandards.Whiletherearenospecificprerequisitesforreadingthisdocument,itwillbehelpfulforthereadertohavefamiliaritywiththefollowing:—Entity-Relationship-Attributemodelling;—Modelling(CASE)tools;—Informationrepositories;—Datadictionaries;—Multiplemeta-layermodelling.
【中国标准分类号】:L70
【国际标准分类号】:35_080
【页数】:46P;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforImpactResistanceofCeramicTableware
【原文标准名称】:陶瓷餐具抗冲击性的标准试验方法
【标准号】:ASTMC368-1988(2006)
【标准状态】:现行
【国别】:
【发布日期】:1988
【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】:C21.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验;陶瓷;凹形餐具
【英文主题词】:ceramictableware;impactresistance
【摘要】:Thepurposeofthistestmethodistopredictproductresistancetoimpactbreakageinservice.1.1Thistestmethodcoversthefollowingtests:1.1.1Impacttestsatthecenterofbothflatwareandhollowwareandattherimofhollowware,and1.1.2Chippingtestsattherimofflatware.Specimensmaybeeitherglazedorunglazed.Note1Theimpacttestatthecenterofthespecimenisusedtodetermine:(1)themagnitudeofablowthatwillproduceinitialfracture,and(2)theamountofenergynecessarytoproducecompletefailure.Inthefirstcase,theinitialfractureshowsonthesideofthepieceoppositefromthatbeingstruckandappearstobeafunctionofthesquareofthethicknessandoftheinherentbrittlenessofthebodyorbody-glazecombination;itisrelativelyindependentofthesizeordesignofthespecimen.Thesecondfactorismoredependentupondesignandoftenissubjecttowidevariationwithinagivengroupofpieces.Note2Theimpacttestattherimofhollowwareissimilartoachippingtest,andthetypeoffailurethatisobtainedisusefulinevaluatingtheeffectoftheshapeoftheobject.Note3Inadditiontotheinherentstrengthofthebody,chippingtestresultsaregreatlyaffectedbycontourofrimandtoalesserextentbythicknessofrim,inclinationofleaf,andfitofglaze.1.2Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.TheSI(metric)unitsgiveninparenthesesareforinformationpurposesonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q30
【国际标准分类号】:97_040_60
【页数】:4P.;A4
【正文语种】: