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312 个结果
  • 简介:Alookattheongoing'5pointsin1line'coastlinedevelopmentprojectinLiaoning,NortheastChinaLIAONINGProvinceinNortheastChinawasoncethecountry'sindustrialengine.WithinadecadeofNewChina'sfounding,itwaschurningouteverythingfromcoalandsteeltofighterjets.Buttheenginesplutteredoutinthemid-1990s,whenmanyofLiaoning'sstate-owned

  • 标签: 辽宁 老工业基地 经济环境 投资环境
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  • 简介:Dropmealine是一个非常地道的口语。在没有电话,没有email的时代,它最初表示“有什么消息简单写几个字寄过来吧”。如今,通讯发达。大家都用手机sendmessage,email,fax等等,很少用写信这种“古老方式”,但这个说法却一直沿用至今。衍生义为“记得要和我联系啊”!

  • 标签: 小学 英语 课外阅读 阅读材料
  • 简介:对线线的描述拓扑的关系尽管许多努力被做了,仍然是一个未解决的问题。这个问题涉及象空间质问,空间分析和制图综合那样的许多实际应用。开发一条健全、有效的途径描述线线关系,它是第一必要排队定义一个个人的拓扑学,即,本地拓扑学。连接的度的概念在一根线的几何结构被用于拓扑的差别的鉴定。一根线的一般拓扑的定义被给,即,端点集合和内部点设定。这个定义能被用于不同尺寸的嵌入的空格,合作尺寸是否等于或比零大。在这个基础上,打电话给4intersection-and-difference的一个通用模型为对基本线线的描述被建立拓扑的关系,一张概念的邻居图与拓扑的距离的考虑在之上被造。建议模型能在/R~1和/R~2代表在线片断之间的拓扑的变化,和基本关系的性质,这被结束。

  • 标签: 拓扑联系 线目标 拓扑距离 维数 GIS
  • 简介:ItisacommonpracticeinChinatouseaninsulatedsilkjacklad-derinthelive-lineworktoenterthe500kVEHVelectricfield.WuhanHighVoltageResearchInstitutehassuccessfullycarriedoutsuchoperatingperformanceatthemeetingofESMO-90inCanada.(Fig.1)Theoperatingprocedureisnowrecommendedasfollows.

  • 标签: LADDER Wuhan Canada insulated recommended nylon
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  • 简介:Anapplicationoflinesimplificationconsideringspatialknowledgeisdescribed.Amethodforidentifyingpotentialconflictregions,inordertoavoidtheselfintersectionofgeneralizedlines,isalsodiscussed.Furthermore,anewprogressivelinesimplificationalgorithmispresented.Fromtheviewpointofspatialcognition,aspatialhierarchicalstructureisproposed,anditsapplicationtoconstructionofspatialknowledgerelatedtoalineisexplained.

  • 标签: PROGRESSIVE LINE SIMPLIFICATION map GENERALIZATION SPATIAL
  • 简介:GansuRareEarthCorporationisoneofthelargestrareearthproducersinChina.Itsannualpro-ductioncapacityofrareearthchloridehasreached18000tonREObytheendof1992,rankingthefirstinChinaandbeingthesecondintheworld(onlynexttoMolycorp.,USA).Thecorporation’soriginalannualcapacityofrareearthchloridewas12000tonREO.Inmeeting

  • 标签: RANKING GANSU CORPORATION invested ROLLED
  • 简介:SNDisasphericalnon-magneticdetectoroperatingsince1996atVEPP-2Melectron-positroncolliderinNovosibirsk,SNDisperforminganupgradeofitssubsystems,electronics,andsoftwareforthenextrunatVEPP-2000,PresentFortran-basedofflineprogramswillbereplacedwiththeobject-orientedframework,whichsupportssimulation,reconstructionandanalysisactivities,Newframeworkexploitstheexperienceobtainedintheworkwiththecurrentofflineandsupportsorextendsitsessentialfeatures.Themainframeworkconceptisamodule,whichisabasicprocessingunitconsumingsomedataandproducingnewdata.Everymodulecanbeparameterizedduringruntime.Formalizeddescriptionofthemodulesisusedbytheframeworksequencerfortheselectionandorderingofminimalsubsetofmodulesforanygiventask.Datapersistencyservicesaremadesufficientlyabstracttoallowimplementationfordifferentpersistencytechnologies.Prsentlythereisanimplementationforthesequentialfileswithpackeddata.Theframeworkprovidesaninterfaceforscriptinglanguages.Togetherwithacustomexpressionparserthisgivesasupportforextensiblerun-timehistogramming.ThefunctionalprototypeoftheframeworkwasimplementedinPythonlanguageandprovedtheconceptsoftheproject.CurrentlythisprototypeisbeingreimplementedinC++.

  • 标签: 正负电子对撞机 SND脱机结构 探测器
  • 简介:Thispaperthoroughlyinvestigatestheproblemofrobotself-locationbylinecorrespondences.Theoriginalcontributionsarethree-fold:(1)Obtainthenecessaryandsufficientconditiontodeterminelinearlytherobot'sposebytwolinecorrespondences.(2)Showthatifthespacelinesareverticalones,itisimpossibletodeterminelinearlytherobot'sposenomatterhowmanylinecorrespondenceswehave,andtheminimumnumberoflinecorrespondencesis3todetermineuniquely(butnon-linearly)therobot'spose.(3)Showthatifthespacelinesarehorizontalones,theminimumnumberoflinecorrespondencesis3forlineardeterminationand2fornon-lineardeterminationoftherobot'spose.

  • 标签: 机器人 自定位 直线对应法 投影平面法
  • 简介:Aftertwoyears’construction,instal-lationandadjustment,aproductionlinewithadesignedcapacityofprocessing400tonsREoxidesperannumhasbeenputintooperationintheZhuJiangRe-fineryPlantinSept.1989.Theprojectusedaninvestmentof30millionyuan,whichwasjointlyinvestedbytheZhuJiangRefineryPlant,theGu-angDongInformation&TechniqueDeve-lopmentCompanyandtheYueHuaNonfer-rousMetalsAssociatedExploitationCom-

  • 标签: jointly adjustment ASSOCIATED MULTISTAGE
  • 简介:RadioactiveIonBeamLineinLanzhou¥ZhanWenlong;GuoZhongyan;LiuGuanhua;YinQuanmin;ZhouJianqunandWangYifangAsanewfrontierinnu...

  • 标签: LANZHOU
  • 简介:TheWebQualityAnalyser(WQA)isanewbenchmarkingtoolforindustry.Ithasbeenextensivelytestedacrossservicesindustries.Fortyfivecriticalsuccessfeaturesarepresentedasmeasuresthatcapturetheuser'sperceptionofservicesindustrywebsites.Thistooldifferstoprevioustools,inthatitcapturestheinformationtechnology(IT)relateddriversectorsofwebsiteperformance,alongwiththemarketing-servicesrelateddriversectors.Thesedriversectorscapturerelevantstructure,functionandperformancecomponents.An'on-off'switchmeasurementapproachdetermineseachcomponent.Relevantcomponentmeasuresscaleintoarelativepresenceoftheapplicablefeature,withafeatureblockdeliveringoneofthesectordrivers.Althoughithousesbothmeasurableandafewsubjectivecomponents,theWQAoffersaprovenandusefulmeanstocomparerelevantwebsites.TheWQAdefineswebsitestrengthsandweaknesses,therebyallowingforcorrectionstothewebsitestructureofthespecificbusiness.WQAbenchmarkingagainstservicesrelatedbusinesscompetitorsdeliversapositionontheWQAindex,facilitatesspecificwebsitedriverratingcomparisons,anddemonstrateswherekeycompetitiveadvantagemayreside.Thispaperreportsonthemarketing-servicesdriversectorsofthisnewbenchmarkingWQAtool.

  • 标签: Benchmarking performance website service analysis COMPARE
  • 简介:Toinvestigatethefeasibilityforahelicallinetobeusedasapulseformingline(PFL),thetransmissioncharacteristicsofthehelicaltransmissionlineisstudiedboththeoreticallyandexperimentally.Theresultsindicatethatitisfeasibletoemployahelicallineasalong-pulsePFL,andtheinfluenceofitsdispersionisnegligible.ComparedwithaconventionalcoaxialPFL,thehelicalPFLwiththesamesizecanproducealongerpulse.

  • 标签: 螺旋脉冲形成线 长脉冲 群延迟 传输特性
  • 简介:Thispaperdescribestheinverstigationdevotedtoestablishsuitableweightsinafeed-forwardneuralnetworkrealizingthenarrow-bandfilteringmapinthecaseofadaptivelineenhancement(ALE)bytheutilityoftheoptimumcommonlearningratebackpropagation(OCLRBP)algorithm.Itisfoundthatafeed-forwardnetworkwith64linearinputandoutputneurons,and8oddsigmoidneuronsinthehiddenlayer,i.e.an(64→8→64)architecture,couldestablishthespecificinput-outputfunctioninthecaseofrelativelylowsignal-to-noiseradio.Onlyisaninputsignalconsistingofmixedperiodicandbroad-bandcomponentsavailabletothenetworksystem.Afterlearning,boththe"fanning-in-connectionpatterns",eachofwhichconsistsofweightsfanningintoahidden-neuronFromalltheoutputsofinput-neurons,andthe"fanning-out-connectionpatterns",eachofwhichconsistsofweightsfanningoutfromahidden-neurontoalltheinputsofoutput-neurons,aretunedtotheperiodicsignals.Thenonline

  • 标签: NEURAL networks BACK-PROPAGATION ADAPTIVE SIGNAL PROCESSING
  • 简介:NeutralbeaminjectorforEASTisdesignedtodeliverdeuteriumbeamswithapowerof2MWto4MWatanenergyof50keVto80keVintotheplasmawithabeamdimensionof12cm×48cm.Consideringthebeamgenerationandtransmission,acolumniformbeam-lineofΦ250cm×400cmisdesignedwithaneutralizer,iondump,calorimeter,bendingmagnetandcryopanels.Thearrangementoftheinternalelementsforthebeam-lineisreported.Arectangularsleevecoupledtotheionsourceisemployedastheneutralizer.Atthedownstreamoftheneutralizer,adipolemagnetseparatestheresidualionsfromthebeampassagewithareflectionradiusof42cmforthefullenergyparticles.Thecalorimeterandtheiondumpserveashighheatfluxcomponents,whichwillworkasthermalinertiatargetsinthefirstphaseofoperation.

  • 标签: 中性束注入器 光束线 设计 中和剂 离子源 高能粒子