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  • 简介:Inaerialrobots’visualnavigation,itisessentialyetverydiffculttodetecttheattitudeandpositionoftherobotsoperatedinrealtime.Byintroducinganewparametricmodel,theproblemcanbereducedfromalmostunmanageabletobepartlysolved,thoughnotfully,aspertherequirement.Inthisparametricapproach,amulti-scaleleastsquaremethodisformulatedfirst.Bypropagatingaswellasimprovingtheparametersdownfromlayertolayeroftheimagepyramid,anewglobalfeaturelinecanthenbedetectedtoparameterizetheattitudeoftherobots.Furthermore,thisapproachpavesthewayforsegmentingtheimageintodistinctparts,whichcanberealizedbydeployingaBayesianclassifieronthepicturecelllevel.ComparisonwiththeHoughtransformbasedmethodintermsofrobustnessandprecisionshowsthatthismulti-scaleleastsquarealgorithmisconsiderablymorerobusttonoises.Somediscussionsarealsogiven.

  • 标签: 天线 机器人 参数模型 视觉导航
  • 简介:在这篇论文,我们首先建议扩大Casimir方法塑造forenergy。然后,解决Hamiltonian系统的一些控制问题被用来。为了解决theH_∞,控制问题,一个Hamiltonian系统的精力函数被塑造到如此的一种形式,能是HJI不平等的一个候选人解决方案。下次,精力功能作为控制ISS-Lyapunov功能的一个候选人被塑造,然后port-controlledHamiltonian系统的input-to-state稳定被完成。一些容易可证实的足够的条件被介绍。

  • 标签: H∞控制 稳定性 汉密尔顿函数 CASIMIR函数
  • 简介:DNAcondensationisanimportantprocessinmanyfieldsincludinglifesciences,polymerphysics,andappliedtechnology.Inthenucleus,DNAiscondensedintochromosomes.Inpolymerphysics,DNAistreatedasasemi-flexiblemoleculeandapolyelectrolyte.Manyagents,includingmulti-valentcations,surfactants,andneutralpoorsolvents,cancauseDNAcondensation,alsoreferredtoascoil–globuletransition.Moreover,DNAcondensationhasbeenusedforextractionandgenedeliveryinappliedtechnology.ManyphysicaltheorieshavebeenpresentedtoelucidatethemechanismunderlyingDNAcondensation,includingthecounterioncorrelationtheory,theelectrostaticzippertheory,andthehydrationforcetheory.Recentlyseveralsingle-moleculestudieshavefocusedonDNAcondensation,sheddingnewlightonoldconcepts.Inthisdocument,themulti-fieldconceptsandtheoriesrelatedtoDNAcondensationareintroducedandclarifiedaswellastheadvancesandconsiderationsofsingle-moleculeDNAcondensationexperimentsareintroduced.

  • 标签: 脱氧核糖核酸 阳离子表面活性剂 场方法 高分子物理 缩合机理 DNA
  • 简介:1.IntroductionWeareconcernedwiththesemigroupapproachtotheinitialvalueproblemfordoublynonlineardegenerateparabolicequationoftheformwhicharisesfromdifferentphysicalbackgroundssuchasthemodelingofthemotionofnon-Newtonianfluids.Inthepastyears,thenonlinear...

  • 标签: SEMIGROUP approach DEGENERATE PARABOLIC EQUATION LIMIT
  • 简介:Earlydefibrillationiscriticaltosurvivalinanypatientwithacardiacarrest.ElectrophysiologistswhoimplantICDs(implantablecardioverterdefi-brillators)testthembyfibrillatingthepatientfollowedbyimmediatedefibrillation.Thisemphasizesthepointthatearlydefibrillationresultsinsurvivalofthesepatients;CPRisdoneonlyifthereisadelayinobtainingthedefibrillatororiftheICDisnotworking.

  • 标签: EARLY DEFIBRILLATION
  • 简介:对在量chromodynamics(QCD)的nonperturbative政体的夸克动力学的描述的一条计量器不变的途径的主要方面首先被考察。在构造计量器不变的草地功能的平行运输操作的角色然后被介绍,并且为相互作用的表示的威尔森环的关联被强调。基于为平行运输操作的多角形的线的使用,最近的开发被介绍。一个integro微分的方程,为沿着一个单身者,与一个阶段因素定义的夸克草地功能获得了直线片断,确切被解决并且在在large-Nc限制的二维的QCD的情况中的经分解。解决方案为夸克显示动态集体产生现象,与比简单的杆强壮的分支切割奇特的一个无限的数字。

  • 标签: 量子色动力学 夸克 Green函数 积分微分方程 相互关联性 并行传输
  • 简介:AdmissioncontrolplaysanimportantroleinprovidingQoStonetworkusers.Motivatedbythemeasurement-basedadmissioncontrolalgorithm,thisletterproposedanewadmissioncontrolapproachforintegratedservicepacketnetworkbasedontrafficprediction.Intheletter,FARIMA(p,d,q)modelsintheadmissioncontrolalgorithmisdeployed.AmethodtosimplifytheFARIMAmodelfittingprocedureandhencetoreducethetimeoftrafficmodelingandpredictionissuggested.Thefeasibility-studyexperimentsshowthatFARIMAmodelswhichhavelessnumberofparameterscanbeusedtomodelandpredictactualtrafficonquitealargetimescale.Simulationresultsvalidatethepromisingapproach.

  • 标签: 接纳控制 网络用户 服务质量 通信量 预测
  • 简介:HowtoteachwritingtostudentsofrelativelyhighEnglishproficiencyisamatterthatmayberegardedasalessimportant:subjectbysomepeople.Thusisnotthecase,howeverasthispapercomesupwiththeideathatgenericstructuresandlanguagefeaturesofparticulartextsshouldbetaughtsoastoachievebet-terresultsinseniorwritingcourses.

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  • 简介:Howanarticulatedmammallearnsaforeignlanguagehasbeenamysteryformanyyearstolanguageresearchers.Languagescholarshaveputforwarddifferentwaystoexplainthisproblem.Yetallofthemarenotperfect.Eachofthesetheorieshascontributedbothquantitivelyandqualitivelytothedifferentaspectsoflanguagelearning.However,languagelearningandteachingdoesn’thappeninavaccum.Itisaffectedbymanyfactors.InvastruralareasinChina,practicallyspeaking,behavioristapproachfitsinwiththewriter’sownexperience.Someweaknessesofthisapproacharealsodiscussed.Thereforewhatisimportantistoadapt,nottoadoptblindly.

  • 标签: BEHAVIORISM Nativism COGNITIVISM Interactionism Inadequacies TEACHER