IEC 60060-2 AMD 1-1996 高压试验技术第2部分:测量系统修改1

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【英文标准名称】:Informationanddocumentation-Recordsmanagementprocesses-Metadataforrecords-Part1:Principles
【原文标准名称】:信息和文献.记录管理过程.记录用元数据.第1部分:原则
【标准号】:ISO23081-1-2006
【标准状态】:现行
【国别】:国际
【发布日期】:2006-01
【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/TC46
【标准类型】:()
【标准水平】:()
【中文主题词】:计算机应用;计算机辅助;计算机辅助设计;数据管理;定义;设计;文献保留;文献工作;文献系统;电子的;总论;指导手册;信息;信息管理;信息技术;管理;元数据;办公机构;原则;产品文件;记录品管理;研究;可靠性;检索;规范(验收);规范;基础结构
【英文主题词】:Computerapplications;Computerassistance;Computer-aideddesign;Datamanagement;Definitions;Design;Documentretention;Documentationsystems;Documentations;Electronic;Generalsection;Guidebooks;Information;Informationmanagement;Informationtechnology;Management;Metadata;Officeorganization;Principles;Productsdocumentation;Recordsmanagement;Research;Responsibility;Retrieval;Specification(approval);Specifications;Underpinning
【摘要】:ThispartofISO23081coverstheprinciplesthatunderpinandgovernrecordsmanagementmetadata.Theseprinciplesapplythroughtimeto:-recordsandtheirmetadata;-allprocessesthataffectthem;-anysysteminwhichtheyreside;-anyorganizationthatisresponsiblefortheirmanagement.
【中国标准分类号】:A14
【国际标准分类号】:01_140_20
【页数】:20P;A4
【正文语种】:英语


【英文标准名称】:StandardPracticeforDigitalDetectorArrayPerformanceEvaluationandLong-TermStability
【原文标准名称】:数字探测器阵列性能评估和长期稳定性标准实施规程
【标准号】:ASTME2737-2010
【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】:E07.01
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:badpixels;contrastsensitivity;DDA;five-groovewedge;imagelag;materialthicknessrange;SNR;spatialresolution
【摘要】:ThispracticeisintendedtobeusedbytheNDTusingorganizationtomeasurethebaselineperformanceoftheDDAandtomonitoritsperformancethroughoutitsserviceasanNDTimagingsystem.ItistobeunderstoodthattheDDAhasalreadybeenselectedandpurchasedbytheuserfromamanufacturerbasedontheinspectionneedsathand.Thispracticeisnotintendedtobeusedasanx201C;acceptancetestx201D;oftheDDA,butrathertoestablishaperformancebaselinethatwillenableperiodicperformancetrackingwhilein-service.AlthoughmanyofthepropertieslistedinthisstandardhavesimilarmetricstothosefoundinPracticeE2597,datacollectionmethodsarenotidentical,andcomparisonsamongvaluesacquiredwitheachstandardshouldnotbemade.Thispracticedefinestheteststobeperformedandrequiredintervals.AlsodefinedarethemethodsoftabulatingresultsthatDDAuserswillcompletefollowinginitialbaseliningoftheDDAsystem.ThesetestswillalsobeperformedperiodicallyatthestatedrequiredintervalstoevaluatetheDDAsystemtodetermineifthesystemremainswithinacceptableoperationallimitsasestablishedinthispracticeordefinedbetweenuserandcustomer(CEO).ThereareseveralfactorsthataffectthequalityofaDDAimageincludingthespatialresolution,geometricalunsharpness,scatter,signaltonoiseratio,contrastsensitivity(contrast/noiseratio),imagelag,andburnin.Thereareseveraladditionalfactorsandsettings(forexample,integrationtime,detectorparametersorimagingsoftware),whichaffecttheseresults.Additionally,calibrationtechniquesmayalsohaveanimpactonthequalityoftheimage.ThispracticedelineatestestsforeachofthepropertieslistedhereinandestablishesstandardtechniquesforassuringrepeatabilitythroughoutthelifecycletestingoftheDDA.1.1ThispracticedescribestheevaluationofDDAsystemsforindustrialradiology.Itisintendedtoensurethattheevaluationofimagequality,asfarasthisisinfluencedbytheDDAsystem,meetstheneedsofusers,andtheircustomers,andenablesprocesscontrolandlongtermstabilityoftheDDAsystem.1.2ThispracticespecifiesthefundamentalparametersofDigitalDetectorArray(DDA)systemstobemeasuredtodeterminebaselineperformance,andtotrackthelongtermstabilityoftheDDAsystem.1.3TheDDAsystemperformancetestsspecifiedinthispracticeshallbecompleteduponacceptanceofthesystemfromthemanufacturerandatintervalsspecifiedinthispracticetomonitorlongtermstabilityofthesystem.Theintentofthesetestsistomonitorthesystemperformancefordegradationandtoidentifywhenanactionneedstobetakenwhenthesystemdegradesbyacertainlevel.1.4Theuseofthegagesprovidedinthisstandardismandatoryforeachtest.Intheeventthesetestsorgagesarenotsufficient,theuser,incoordinationwiththecognizantengineeringorganization(CEO)maydevelopadditionalormodifiedtests,testobjects,gages,orimagequalityindicatorstoevaluatetheDDAsystem.AcceptancelevelsfortheseALTERNATEtestsshallbedeterminedbyagreementbetweentheuser,CEOandmanufacturer.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:N46
【国际标准分类号】:11_040_50
【页数】:19P.;A4
【正文语种】:英语