学科分类
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500 个结果
  • 简介:Theanalysisofthesolutionoffluidnetworkmodeliscarriedouttomatchtheneedofgraphicallymodularauto-modellingforpowerplantsimulatorsbecauseofthesymmetryandsparsityofthelinearsystemofequations,anewmethodofimprovedGausseliminationispresentedforthesolutionoflargescalematrices.ComparisonofthenewmethodwiththeclassicalGausseliminationmethod,theGauss-Seideliterativemethodaregiven.Theresultsshowthatthealgorithmprovidedisbetterthantheothersandissuitableforauto-modellingoffluidnetowrksofpowerplants.

  • 标签: 流体力学 自动模拟网络 新算法
  • 简介:一年之计在于春,每年年初正是企业订货的旺季,各种展览会、订货会也纷纷举办。而在数量众多的展览会中,中国汽车后市场行业大展——“AutoMaintech中国国际汽车维修技术及设备、汽车零配件、汽车用品展览会”无疑已经成为行业最具影响力的盛典。“AutoMaintech2008”将于2008年3月14—17日在北京中国国际展览中心举行。

  • 标签: AUTO 中国国际展览中心 展会 汽车维修技术 汽车后市场 汽车零配件
  • 简介:<正>China’sautomobileindustryhadagoodstartintheyearof2014.Lastyear,thosemajorautoenterprisesransmoothly,whoseleadingeco-nomicindicatorsremainedasteadygrowth.AccordingtoChinaAssociationofAutomobileManufacturers(CAAM),inJanuary,theproductionandsalesofautomobilesinChinakepta

  • 标签: AUTOMOBILE AUTOMOBILE smoothly PASSENGER INDICATOR
  • 简介:The1994ChinaInternationalAutoExpositionattractedsomeoftheworld’sfamouscarmakerssuchasGermany’sBenz,theSwedishSAAD,Japan’sMazdaandKorea’sHyundai.TheonlyChineseenterpriserivalingtheseinternationalgiantsistheShanghaiVolkswagenAutoCo.,Ltd.whoseluxuryShanghaiSantanacararousedgreatinterestamongitscounterpartsathomeandabroad.SituatedintheAntingIndustrial

  • 标签: Mazda LUXURY PRIDE SWEDISH HYUNDAI Korea
  • 简介:TangShuangning,ViceChairmanofChinaBankingRegulatoryCommissioninspeechinSino-JapanEconomyForumofHighLevelrevealedthatuntilMaythisyear,61foreignfinancialinstitutionsandenterprisesfrom19countriesandregionshasestablished199operationalfinancialinstitutionsin21citiesinChinaincludingthreeforeignautomobilefinancialcompanies.

  • 标签: 中国 汽车金融 外资公司 市场 外资银行
  • 简介:Sprayauto-ignitionexperimentswerecarriedoutinaconstantvolumecombustionchamberforsomepurealkanes(n-paraffinswithdifferentchainlength,cyclohexane,n-butylcyclohexane,andisooctane)andblendsofn-decanewithStandardBlendedFuel(isooctane/n-heptane)andproductgasoline.Testresultsshowedthatthereactionactivityofn-paraffinswasrelativelyhigh.Meanwhile,theauto-ignitioncharacteristicsdifferedsignificantlywiththemolecularstructuresofalkanes.Addingdifferentvolumefractionsofn-decanetoStandardBlendedFuelandproductgasolinecouldimprovethefuelreactionactivityatvaryingdegree.Finally,functionalgroupseffectswereusedtosimulatetherelationshipbetweenthemoleculartopologyandtheauto-ignitionquality.

  • 标签: SPRAY AUTO-IGNITION REACTION activity FUNCTIONAL group
  • 简介:Inthispaper,firstly,amathematicalmodelforaspecifickindofweltedbifurcationisestablished,theparametricequationfortheintersectingcurveisresultedin.Secondly,amethodforpartitioningfiniteelementmeshesoftheweltedbifurcationisputforward,itsmainideaisthatdevelopingthemainpipesurfaceandthebranchpipesurfacerespectively,dividingmeshesoneachdevelopingplaneandobtainingmeshespoints,thentransformingtheirplanecoordinatesintospacecoordinates.Finally,anappliedprogramforfiniteelementmeshesauto-generationissimplyintroduced,whichadoptObjectARXtechniqueanditsrunningresultcanbeshowninAutoCAD.ThemeshesgeneratedinAutoCADcanbeexportedconvenientlytomostoffiniteelementanalysissoftwares,andthefiniteelementcomputingresultcansatisfytheengineeringprecisionrequirement.

  • 标签: 有限元 网格 管面 自动生成 目标ARX CAD
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  • 简介:另一个方法是使用REGION命令选取各个对象,如果选取的对象是文本,如果先键入文本再画剖面线

  • 标签: 绘图技巧
  • 简介:为鉴别在压缩压路机的水泥(RCC)的滚动的层自动地建水坝的一个计划被介绍。首先,一个概念的模型被开发。由使用一个计算几何学方法,第二,卷在卷压缩之间匹配的层和汽车的汽车鉴定用机器制造并且滚动的层基于空间控制点被认识到。到GuandiRCC水坝的构造的一个应用程序证明卷层的汽车鉴定在保证设计质量起了一个重要作用。

  • 标签: 碾压混凝土坝 自动识别 滚动 混凝土层 概念模型 几何方法
  • 简介:Sentimentanalysis,ahotresearchtopic,presentsnewchallengesforunderstandingusers'opinionsandjudg-mentsexpressedonline.Theyaimtoclassifythesubjectivetextsbyassigningthemapolaritylabel.Inthispaper,weintroduceanovelmachinelearningframeworkusingauto-encodersnetworktopredictthesentimentpolaritylabelatthewordlevelandthesentencelevel.Inspiredbythedimensionalityreductionandthefeatureextractioncapabilitiesoftheauto-encoders,weproposeanewmodelfordistributedwordvectorrepresentation"PMI-SA"usingasinputpointwise-mutual-information"PMI"wordvectors.Theresultedcontinuouswordvectorsarecombinedtorepresentasentence.Anunsupervisedsentenceembeddingmethod,calledContextualRecursiveAuto-Encoders"CoRAE",isalsodevelopedforlearningsentencerepresentation.Indeed,CoRAEfollowsthebasicideaoftherecursiveauto-encoderstodeeplycomposethevectorsofwordsconstitutingthesentence,butwithoutrelyingonanysyntacticparsetree.TheCoRAEmodelconsistsincombiningrecursivelyeachwordwithitscontextwords(neighbors'words:previousandnext)byconsideringthewordorder.Asupportvectormachineclassifierwithfine-tuningtechniqueisalsousedtoshowthatourdeepcompositionalrepresentationmodelCoRAEimprovessignificantlytheaccuracyofsentimentanalysistask.Experimentalresultsdemon-stratethatCoRAEremarkablyoutperformsseveralcompetitivebaselinemethodsontwodatabases,namely,SanderstwittercorpusandFacebookcommentscorpus.TheCoRAEmodelachievesanefficiencyof83.28%withtheFacebookdatasetand97.57%withtheSandersdataset.

  • 标签: SENTIMENT analysis recursive auto-encoder stacked auto-encoder