简介:Inaerialrobots’visualnavigation,itisessentialyetverydiffculttodetecttheattitudeandpositionoftherobotsoperatedinrealtime.Byintroducinganewparametricmodel,theproblemcanbereducedfromalmostunmanageabletobepartlysolved,thoughnotfully,aspertherequirement.Inthisparametricapproach,amulti-scaleleastsquaremethodisformulatedfirst.Bypropagatingaswellasimprovingtheparametersdownfromlayertolayeroftheimagepyramid,anewglobalfeaturelinecanthenbedetectedtoparameterizetheattitudeoftherobots.Furthermore,thisapproachpavesthewayforsegmentingtheimageintodistinctparts,whichcanberealizedbydeployingaBayesianclassifieronthepicturecelllevel.ComparisonwiththeHoughtransformbasedmethodintermsofrobustnessandprecisionshowsthatthismulti-scaleleastsquarealgorithmisconsiderablymorerobusttonoises.Somediscussionsarealsogiven.
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.
简介:1.IntroductionWeareconcernedwiththesemigroupapproachtotheinitialvalueproblemfordoublynonlineardegenerateparabolicequationoftheformwhicharisesfromdifferentphysicalbackgroundssuchasthemodelingofthemotionofnon-Newtonianfluids.Inthepastyears,thenonlinear...
简介:Earlydefibrillationiscriticaltosurvivalinanypatientwithacardiacarrest.ElectrophysiologistswhoimplantICDs(implantablecardioverterdefi-brillators)testthembyfibrillatingthepatientfollowedbyimmediatedefibrillation.Thisemphasizesthepointthatearlydefibrillationresultsinsurvivalofthesepatients;CPRisdoneonlyifthereisadelayinobtainingthedefibrillatororiftheICDisnotworking.
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。
简介:AdmissioncontrolplaysanimportantroleinprovidingQoStonetworkusers.Motivatedbythemeasurement-basedadmissioncontrolalgorithm,thisletterproposedanewadmissioncontrolapproachforintegratedservicepacketnetworkbasedontrafficprediction.Intheletter,FARIMA(p,d,q)modelsintheadmissioncontrolalgorithmisdeployed.AmethodtosimplifytheFARIMAmodelfittingprocedureandhencetoreducethetimeoftrafficmodelingandpredictionissuggested.Thefeasibility-studyexperimentsshowthatFARIMAmodelswhichhavelessnumberofparameterscanbeusedtomodelandpredictactualtrafficonquitealargetimescale.Simulationresultsvalidatethepromisingapproach.
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简介:HowtoteachwritingtostudentsofrelativelyhighEnglishproficiencyisamatterthatmayberegardedasalessimportant:subjectbysomepeople.Thusisnotthecase,howeverasthispapercomesupwiththeideathatgenericstructuresandlanguagefeaturesofparticulartextsshouldbetaughtsoastoachievebet-terresultsinseniorwritingcourses.
简介:Howanarticulatedmammallearnsaforeignlanguagehasbeenamysteryformanyyearstolanguageresearchers.Languagescholarshaveputforwarddifferentwaystoexplainthisproblem.Yetallofthemarenotperfect.Eachofthesetheorieshascontributedbothquantitivelyandqualitivelytothedifferentaspectsoflanguagelearning.However,languagelearningandteachingdoesn’thappeninavaccum.Itisaffectedbymanyfactors.InvastruralareasinChina,practicallyspeaking,behavioristapproachfitsinwiththewriter’sownexperience.Someweaknessesofthisapproacharealsodiscussed.Thereforewhatisimportantistoadapt,nottoadoptblindly.