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103 个结果
  • 简介:<正>Readingisthekeytoschoolsuccessand,likeanyskill,ittakespractice.Achildlearnstowalkbypractisinguntilhenolongerhastothinkabouthowtoputonefootinfrontoftheother.Thegreatathletepractisesuntilhecanplayquickly,accuratelyandwithoutthinking.Ed-ucatorscallitautomaticity.

  • 标签: READING THINKING ATHLETE SKILL quickly DOING
  • 简介:Thispaperdealswithmodelgenerationforequationaltheories,i.e.,automaticallygenerating(finite)modelsofagivensetof(logical)equations.Ourmethodoffinitemodelgenerationandatoolforautomaticconstructionoffinitealgebrasisdescribed.Someexamplesaregiventoshowtheapplicationsofourprogram.Wearguethat,thecombinationofmodelgeneratorsandtheoremproversenablesustogetabetterunderstandingoflogicaltheories.Abriefcomparisonbetwweenourtoolandothersimilartoolsisalsopresented.

  • 标签: 有限代数 自动化理论 有限模型产生
  • 简介:ROOTversion3(spring2001)supportsautomaticclassschemaevolution.Inadditionthisversionalsoproducesfilesthatareself-describing.Thisisachievedbystoringineachfilearecordwiththedescriptionofallthepersistentclassesinthefile.Beingself-describingguaranteesthatafilecanalwaysbereadlater,itsstructurebrowsedandobjectsinspected.alsowhenthelibrarywiththecompiledcodeoftheseclassesismissingTheschemaevolutionmechanismsupportsthefrequentcasewhenmultipledatasetsgeneratedwithmanydifferentclassversionsmustbeanalyzedinthesamesession.ROOTsupportstheautomaticgenerationofC++codedescribingthedataobjectsinafile.

  • 标签: ROOT 国际物理学家合作 数据处理系统
  • 简介:在计算机化的断层摄影术(CT)的膀胱的分割想象是在放射治疗计划前列腺癌症的重要的步。我们在场自动地描出的一个新分割计划在与三个学生一起的CT图象的膀胱轮廓走。首先,我们使用吝啬的移动算法获得包含膀胱的不平的轮廓的一幅聚类的图象,它然后被使用一个成长区域的算法,起始的种子点从扫描进程的一个线每篇文字题目下作者的署名选择了在第二步提取。第三步是用转动球算法更精确地精制膀胱轮廓。这些步然后被扩大以一种slice-by-slice方式分割膀胱体积。获得的结果与由放射肿瘤学家的用手的分割相比。敏感,特性,积极预计用价值,否定预计用价值,和Hausdorff距离的平均价值分别地是86.5%,96.3%,90.5%,96.5%,和2.8象素。结果证明膀胱能精确地被分割。

  • 标签: 图像分割 计算机化断层显象 膀胱 Mean SHIFT算法
  • 简介:Highcustomerinterestinautomaticvehiclesisgoodnewstothemarket.Thelatestquarterly"AutomatedVehiclesIndex"issuedrecentlybyRolandBergerandfkaForschungsgesellschaftKraftfahrwesenmbHAachenpresentstherelativecompetitivepositionsofthekeymarketsintermsofindustryandmarket.

  • 标签: quarterly issued Berger CUSTOMER COMPETITIVE AUTOMATED
  • 简介:Severalfeaturesofretinalvesselscanbeusedtomonitortheprogressionofdiseases.Changesinvascularstructures,forexample,vesselcaliber,branchingangle,andtortuosity,areportentsofmanydiseasessuchasdiabeticretinopathyandarterialhypertension.Thispaperproposesanautomaticretinalvesselsegmentationmethodbasedonmorphologicalclosingandmulti-scalelinedetection.First,anilluminationcorrectionisperformedonthegreenbandretinalimage.Next,themorphologicalclosingandsubtractionprocessingareappliedtoobtainthecruderetinalvesselimage.Then,themulti-scalelinedetectionisusedtofinethevesselimage.Finally,thebinaryvasculatureisextractedbytheOtsualgorithm.Inthispaper,forimprovingthedrawbacksofmulti-scalelinedetection,onlythelinedetectorsat4scalesareused.Theexperimentalresultsshowthattheaccuracyis0.939forDRIVE(digitalretinalimagesforvesselextraction)retinaldatabase,whichismuchbetterthanothermethods.

  • 标签: 视网膜血管 视网膜图像 分割方法 船只 在线检测 OTSU算法
  • 简介:InterferometricSyntheticApertureRadar(InSAR)allowsproductionofhighresolutionDEManddetectionofsmallearthmotionsusingmultiplepassSARdatasetsobtainedbyremotesensingsatellite.ButthewholeprocesshasnotyetreachedsufficientrobustnesstowarrantautomatedDEMproductionascommonlyproducedbystereovisionwithopticalimages.TheautomaticalgorithmforprecisionregistrationisoneofthebottlenecksinInSARdataprocessing.Inthispaper,anautomaticapproachwithmulti-stepimagematchingalgorithmispresented.Allproceduresareautomaticallyimplemented.TheexperimentiscarriedoutsuccessfullywithSIR-C/L-bandInSARdata.Thetriangularpiecewiserectificationisalsoadvancedinreducinglocaldistortionbetweentheimagesandprocessingthelargesceneimage.Theprimaryresulthasprospectintheprecisionregistrationfortherepeat-trackInSARdataandrevealsthepotentialofthepresentedautomaticstrategy.

  • 标签: INTERFEROMETRY RADAR REGISTRATION IMAGE MATCHING
  • 简介:Itiswidelyacceptedthatthedesignofmorphologicalfilters,whichareoptimalinsomesense,isadifficulttask.Inthispaperanovelmethodforoptimallearningofmorphologicalfilteringparameters(Genetictrainingalgorithmformorphologicalfilters,GTAMF)ispresented.GTAMFadoptsnewcrossoverandmutationoperatorscalledthecurvedcylindercrossoverandmaster-slavemutationtoachieveoptimalfilteringparametersinaglobalsearching.Experimentalresultsshowthatthismethodispractical,easytoextend,andmarkedlyimprovestheperformancesofmorphologicalfilters.Theoperationofamorphologicalfiltercanbedividedintotwobasicproblemsincludingmorphologicaloperationandstructuringelement(SE)selection.Therulesformorphologicaloperationsarepredefinedsothatthefilter'spropertiesdependmerelyontheselectionofSE.Bymeansofadaptiveoptimizationtraining,structuringelementspossesstheshapeandstructuralcharacteristicsofimagetargets,andgivespecificinformationtoSE.Morphologicalfiltersformedinthiswaybecomecertainlyintelligentandcanprovidegoodfilteringresultsandrobustadaptabilitytoimagetargetswithclutterbackground.

  • 标签: 图像合成 形态滤波器 自动目标探测
  • 简介:Thispaperpresentsanautomaticimage-basedapproachforconvertinggreyscaleimagestopencilsketches,inwhichstrokesfollowtheimagefeatures.ThealgorithmfirstextractsadensedirectionfieldautomaticallyusingLogical/Linearoperatorswhichembodythedrawingmechanism.Next,areconstructionapproachbasedonasampling-and-interpolationschemeisintroducedtogeneratestrokepathsfromthedirectionfield.Finally,pencilstrokesarerenderedalongthespecifiedpathswithconsiderationofimagetoneandartificialillumination.Asanimportantapplication,thetechniqueisappliedtorenderportraitsfromimageswithlittleuserinteraction.Theexperimentalresultsdemonstratethattheapproachcanautomaticallyachievecompellingpencilsketchesfromreferenceimages.

  • 标签: 画笔草图绘制 自动图像 计算机
  • 简介:ThispaperpresentsanautomaticcomputertablebasedonSTC89C52MCU,theheightandangleofthedeskcanbeadjustedbyMCU.ThecomputerdeskcanalsobeconnectedwiththeBluetoothofthemobilephonethroughtheMCUtorealizethewirelessremotecontrolandadjusttheheightandtheangleofthedisplayscreenofthecomputerdesk.Accordingtoman-machineengineering,thedesigncanmeettheneedsofdifferentadultpopulationsforcomputerdisplayheightandanglerequirements.Thedesignofthecomputerdeskcanmeetthedailyneedsofpeopleintheoffice,andcaneffectivelyreducethepainofcervicalspondylosis,lumbarpainandothersymptoms,whicharecausedbylongworkinghours.Thecomputerdeskcanimproveworkefficiency,strongpracticability,highperformancepriceratio.

  • 标签: 89C52单片机 计算机显示 设计 电脑桌 人机工程学 办公室人员
  • 简介:Inordertoachieveworkpiece′sautomaticloading-and-unloading,thispaperdesignsamanipulator.Usethevacuumchuckmechanismtoachievethefunctionofreclaimingandthecylinderrailstoachievethefunctionofpick-feedingmaterials.PLCcontroltechnologyisappliedtocontrolsystemandimprovetheefficiencyandreducehumanlabor.Toensurethestrength,Solidworkssimulationperformsthestressandstrainanalysistoverifymaterialstrength.

  • 标签: 机械手设计 自动加载 卸载 SolidWorks Simulation PLC控制技术
  • 简介:Manyalgorithmshavebeenimplementedfortheproblemofdocumentcategorization.ThemajorityworkinthisareawasachievedforEnglishtext,whileaveryfewapproacheshavebeenintroducedfortheArabictext.ThenatureofArabictextisdifferentfromthatoftheEnglishtextandthepreprocessingoftheArabictextismorechallenging.ThisisduetoArabiclanguageisahighlyinflectionalandderivationallanguagethatmakesdocumentminingahardandcomplextask.Inthispaper,wepresentanAutomaticArabicdocumentsclassificationsystembasedonkNNalgorithm.Also,wedevelopanapproachtosolvekeywordsextractionandreductionproblemsbyusingDocumentFrequency(DF)thresholdmethod.TheresultsindicatethattheabilityofthekNNtodealwithArabictextoutperformstheotherexistingsystems.Theproposedsystemreached0.95micro-recallscoreswith850Arabictextsin6differentcategories.

  • 标签: ARABIC DOCUMENTS classification KNN VECTOR model
  • 简介:Inordertoslovethelarge-scalenonlinearprogramming(NLP)problemsefficiently,anefficientoptimizationalgorithmbasedonreducedsequentialquadraticprogramming(rSQP)andautomaticdifferentiation(AD)ispresentedinthispaper.Withthecharacteristicsofsparseness,relativelylowdegreesoffreedomandequalityconstraintsutilized,thenonlinearprogrammingproblemissolvedbyimprovedrSQPsolver.Inthesolvingprocess,ADtechnologyisusedtoobtainaccurategradientinformation.Thenumericalresultsshowthatthecombinedalgorithm,whichissuitableforlarge-scaleprocessoptimizationproblems,cancalculatemoreefficientlythanrSQPitself.

  • 标签: 简化序列二次规划 优化算法 自动微分法 大规模非线性规划
  • 简介:ThispaperpresentstwodifferentalgorithmsthatderivethecohesionstructureintheformoflexicalchainsfromtwokindsoflanguageresourcesHowNetandTongYiCiCiLin.There-searchthatconnectsthecohesionstructureofatexttothederivationofitssummaryisdisplayed.Anovelmodelofautomatictextsummarizationisdevised,basedonthedataprovidedbylexicalchainsfromoriginaltexts.Moreover,theconstructionrulesoflexicalchainsaremodifiedaccord-ingtocharacteristicsoftheknowledgedatabaseinordertobemoresuitableforChinesesumma-rization.EvaluationresultsshowthathighqualityindicativesummariesareproducedfromChi-nesetexts.

  • 标签: 文本自动摘要 织构 内聚力 词汇链
  • 简介:AUTOMATICPLANNINGOFASSEMBLINGORDERFROMASSEMBLYDRAWINGLiShinanJingHaidongAbstractItisimportanttoplantheasemblingorderautomatic...

  • 标签: ES ASSEMBLY DRAWING ASSEMBLING order
  • 简介:IntroductionWhetherearthquakescanbepredictedornotisstilaproblemincontroversyintheseismologicalcircle.Atanyrate,however,peopl...

  • 标签: earthquake prediction PRECURSORY pattern AUTOMATIC RECOGNITION