简介:ObjectiveThemainpurposeofthepresentstudywastodescribethevestibularfunctioninpatientswithauditoryneuropathy(AN),andtoassesstheirabilitytomaintainbalance.MethodsVestibularfunctiontestswereperformedon32patientswithANand36normalsubjectsincludingelectronystagmopraphy(ENG)andstaticpostrography(SPG).Theresultsfromthetwogroupswerecompared.ResultsEquilibriumfunctioninpatientswithAN,wasabnormal,comparedtonormalsubjects.ConclusionVestibularfunctiontests,espe-ciallystaticpostrography,shouldbeperformedonpatientswithAN.
简介:自由民建议的光线的基础功能(RBF)插值途径被用来解决遇到在的反的问题记载得好并且另外的petrophysical问题。途径是根据物理岩石数据集在实验室预言petrophysical性质,它包括形成因素,粘性,渗透,和分子的作文。然而,这条途径不在插值结果上考虑刻度数据的空间分发的效果。这研究基于自由民RBF插值途径,联合起来的基础功能一致地被在空间领域占据建议一条新RBF插值途径。二条途径的反的结果被使用我们的数据集比较地分析。我们决定尽管二条途径的插值效果是相等的,新途径为当数据库大时,减少基础函数的数字更灵活、有益,导致插值函数表达式的简化。然而,当数据簇是差距很大的时,中央数据的预言的结果足够地没满足。
简介:Inordertoreducenursingintensityandimprovefreedomoftheelderlyandthedisabled,amulti-functionnursingwheelchairwhichcanswitchchairtobedandrealizemanykindsofposturetransformationisdesigned.Thispaperintroducesthemechanicalstructuredesign(positionadjustmentmechanismandvariablewheelbasemechanism)andcontroldesignofposturetransformationunitofmultifunctionalnursingwheelchair.
简介:Supportvectormachines(SVMs)haveshownremarkablesuccessinmanyapplications.However,thenon-smoothfeatureofobjectivefunctionisalimitationinpracticalapplicationofSVMs.Toovercomethisdisadvantage,atwicecontinuouslydifferentiablepiecewise-smoothfunctionisconstructedtosmooththeobjectivefunctionofunconstrainedsupportvectormachine(SVM),anditissuesapiecewise-smoothsupportvectormachine(PWESSVM).Comparingtotheothersmoothapproximationfunctions,thesmoothprecisionhasanobviousimprovement.ThetheoreticalanalysisshowsPWESSVMisgloballyconvergent.Numericalresultsandcomparisonsdemonstratetheclassificationperformanceofouralgorithmisbetterthanothercompetitivebaselines.
简介:Naturaladultagingisassociatedwithmanyfunctionalimpairmentsofthehumanneuromuscularsystem.Oneofthemoreobservablealterationsisthelossofcontractilemusclemass,termedsarcopenia.Thelossofmusclemassoccursprimarilyduetoaprogressivelossofviablemotorunits,andaccompanyingatrophyofremainingmusclefibers.Notonlydoesthelossofmusclemasscontributetoimpairedfunctioninoldage,butalterationsinfibertypeandmyosinheavychainisoformexpressionalsocontributetoweaker,slower,andlesspowerfulcontractingmuscles.Thisreviewwillfocusonmotorunitlossassociatedwithnaturaladultaging,age-relatedfatigability,andtheage-relateddifferencesinstrengthacrosscontractilemuscleactions.
简介:Anewsmoothgapfunctionfortheboxconstrainedvariationalinequalityproblem(VIP)isproposedbasedonanintegralglobaloptimalitycondition.Thesmoothgapfunctionissimpleandhassomegooddifferentiableproperties.TheboxconstrainedVIPcanbereformulatedasadifferentiableoptimizationproblembytheproposedsmoothgapfunction.Theconditions,underwhichanystationarypointoftheoptimizationproblemisthesolutiontotheboxconstrainedVIP,arediscussed.Asimplefrictionalcontactproblemisanalyzedtoshowtheapplicationsofthesmoothgapfunction.Finally,thenumericalexperimentsconfirmthegoodtheoreticalpropertiesofthemethod.
简介:Inarecentarticle,theauthorsprovidedaneffectivealgorithmforbothcomputingtheglobalinfimumof/anddecidingwhetherornottheinfimumof/isattained,where/isamultivariatepolynomialoverthefieldRofrealnumbers.Asacomplement,theauthorsinvestigatethesemialgebraicallyconnectedcomponentsofminimumpointsofapolynomialfunctioninthispaper.Foragivenmultivariatepolynomial/overR,itisshownthattheabove-mentionedalgorithmcanfindatleastonepointineachsemi-algebraicallyconnectedcomponentofminimumpointsof/whenever/hasitsglobalminimum.
简介:Structuraloptimizationforcrashworthinesscriteriaisofparticularsignificanceespeciallyatearlystageofdesign.ThecomparativestudyofKrigingandradialbasisfunctionnetwork(RBFN)wasperformedinordertoimprovethecrashworthinesseffectsofhoneycomb.ImprovingthecrashworthinesscharacteristicofhoneycombwasachievedusingLS-OPTanddomainreductionstrategy.Thisoptimizationisperformedonthebasisofvalidatednumericalsimulationtoestablishtheapproximatedmodeltoillustratetherelationshipbetweentheresponsesanddesignvariables.TheresultsshowedthatKrigingmeta-modelisexcelledinaccuracy,robustnessandefficiencycomparedtoradialbasisfunction(RBF)andcrashworthinesscharacteristicofhoneycombisimprovedby4%.
简介:BackgroundThoracoscopicminimallyinvasivepectusexcavatumrepair(Nussoperation)featuresitslittletrauma,simple,shortoperationtime,andgoodoutcomecomparedwithtraditionaltreatmentofpectusexcavatumsurgery-sternalelevation(Ravitchoperation)andsternalturnover.Theeffectoftheoperationonpatients’heartandheartfunctionremainsunclear.ThisstudyaimedtounderstandthechangesofelectrocardiogramandcardiacfunctionafterNussprocedure.MethodsFrom2008Januaryto2013July,thoracoscopicNussoperationwasperformedin217patientswithpectusexcavatum.Allthepatientsunderwentthepreoperative,postoperativedetectionofECGandcardiacfunctionin3monthsto1yearafteroperation.ResultsAfter3monthsto1yearfollow-up,arrhythmiaspersistedin46outof135patientswithpreoperativesymptoms(P<0.05);Strokevolumeandcardiacoutputsignificantlyincreased(P<0.05);Andcardiacparametersgreatlyimproved(P<0.05).ConclusionsMinimallyinvasiverepairofpectusexcavatumdeformitycancorrectthechestmalformation,alleviatearrhythmia,andimprovecardiacfunction.