简介:Theabilitytomove10sofTeraBytesinreasonableamountsoftimearecriticaltomanyoftheHighEnergyPhysicsapplications.Thispaperexaminestheissuesofhighperformance,highreliabilitytapestoragesystems,andpresentstheresultsofa2-yearASCIPathForwardprogramtobeabletoreliablymove1GB/stoanarchivethatcanlast20years.Thispaperwillcovertherequirements.approach,hardware,applicationsoftware,interfacedescriptions,performance,measuredreliabilityandpredictedreliability.Thispaperwillalsotouchonfuturedirectionsforthisresearch.Thecurrentresearchallowssystemstosustain80MB/sofuncompressabledataperFibreChannelinterfacewhichisstripedoutto8ormoredrives.Thislookstotheapplicationasasingletapedrivefrombothmoutanddatatransferperspectives.Striping12RAITsystemstogetherwillprovidenearly1GB/stotape.Thereliabilityisprovidedbyamethodofaddingparitytapestothedatastripes.Forexample,adding2paritytapestoan8-stripegroupwillallowany2ofthe10tapestobelostordamagedwithoutlossofinformation.ThereliabilityofRAITwith8stripesand2paritiesexceedsthatofmirroredtapeswhileRAITuses10tapesinsteadofthe16tapesthatamirrorwouldrequire.TheresultsofthispaperistobeabloetounderstandtheapplicabilityofRAITandtobeabletounderstandwhenitmaybeusefulinHighEnergyPhysicsapplications.
简介:Basedonhreedifferentimplementationschemes,thispaperstronglydemonstratesthattheperformanceoftheHoughtransformdependscruciallyonitsimplementationscemewhenitisusedforlinedetection.Moreover,theobtainedresultscanbeusedasatheoreticalbasistopredicttheperformanceoftheHoughtransformaswellastoeliminatethenoiseinHoughspacecomingfromimagenoise.
简介:Porousnanocarbonswithaverageparticlesize20–40nmweredevelopedusingbiowasteoilpalmleavesasaprecursor.Simplepyrolysiswascarriedoutat700°Cundernitrogenatmosphere.Obtainedporousnanocarbonsshowedexcellentporousnaturealongwithsphericalshape.Symmetricsupercapacitorfabricatedfromporousnanocarbonsshowedsuperiorsupercapacitanceperformancewherehighspecificcapacitanceof368F/gat0.06A/gin5MKOHwerereported.Italsoexhibitedhighstability(96%over1700cycles)andenergydensityof13Wh/kg.Lowresistancevalueswereobtainedbyfittingtheimpedancespectra,thusindicatingtheavailabilityofthesematerialsassupercapacitorselectrode.Thepresentedmethodiscosteffectiveandalsoinlinewithwastetowealthapproach.
简介:ThispaperproposesaformalapproachtoprotocolperformancetestingbasedontheextendedconcurrentTTCN,Tomeettheneedsofprotocolperformancetesting,concurrentTTCNisextended,andtheextendedconcurrentTTCN'soperationalsemanticsisdefinedintermsofInput-OutputLabeledTransitionSystem.Anarchitecturedesignofprotocolperformancetestsystemisdescribed,andanexampleoftestcasesanditstestresultaregiven.
简介:原则,设计,构造和表演安培计并且为通过金属设备的墙测量氢的浸透率的potentiometric传感器被调查以便与高精确性开发氢传感器的一种新类型。在一个给定的收费条件下面的氢浸透的短暂曲线被采用评估氢传感器的二种类型的表演。在一样的条件下面与传感器的二种类型检测的氢集中的相对偏差从3.0%~13%变化了。精确性,反应时间,重制度,和安装被讨论并且比较。potentiometric传感器(电子传感器)的反应时间比安培计的传感器(我传感器)的短。传感器的两种类型展出了好重制度。由包含高电的电导率和强壮的粘附的二功能的一种质子导体粘合剂或非液体电解质组成的我传感器的开发将是有希望的前景以便在高温度测量氢浸透。