简介：Forthepurposeofsolvingoptimalcontrolproblemofawall-crawlingmobilerobotworkingonsphericalcontainers,weproposetheHamel'sformalismforPontryaginMaximumPrinciple,whichgivesageneralframeworkfortheoptimalcontrolofamechanicalsystemwithvelocityconstraints,especiallynonholonomicconstraints.Theeffectivenessoftheproposedframeworkisshownbythesimulationsfortheaboveproblem.

简介：Inthispaper,supposingthatthereceivedsignalsattheinputareoftheformv（t）=s1[t,x1（t）]s2[t,x2（t）]+n（t）wheresiareFMsignals（i=1,2）,anovelcross-coupledphase-lockedloop（CCPLL（M））anditsmathematicalmodelareobtained.Theglobalqualitativestructuralanalysisofthemathematicalmodelofthefirst-orderloop,theacqui-sitionregionandsynchronizationregionofthefirst-orderloop,andthesynchronizationregionofthesecond-orderloopareobtained.

简介：Inthisnote,thedissipativecontrolproblemofthegeneralquadraticsupplyrateforstatedelayedsystemsisconsidered.Asystematicapproachisusedinthisworksothatasufficientconditionontheexistenceofadelay-independentstatefeedbackcontrollerisgiven.Inaddition,asufficientconditionontheexistenceofadelay-dependentstatefeedbackispresented.Oursolutionsareexpressedintermsofmatrixinequalitiesthatcanbesolvedbynumericalmethod.Thedelay-dependentcontrollermightbelessconservativethanthedelay-independentoneinthesensethatthedelay-dependentcasemayhaveasolutionforalargerclassofsystemsthanthatfordelay-independentcase.

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简介：Thispaperdealswithfluxtrackingcontrolofinductionmotors.Firstly,weanalyzeconvergencyofnon-homogeneouslineartime-varyingsystemsandasufficientconditionisgiven.Finally,thefluxregulatorofinductionmotorsisdiscussed.

简介：Gummosisisthemostseriousdiseaseofmangoallaroundtheworld,whichisbecomingepidemicindifferentregionsofthesecountries,caninfectalmostallthecommercialandindigenousvarietiesofmango,andhasbeenregardedasanewseriousthreatofmangotreesatanalarmingratio.Thisarticlereviewedcausalorganisms,currentstatus,futureprospects,andmanagementpracticesofmangogummosisdisease.

简介：Inordertomeettheneedsofpracticaldesign,aninterpolationtechniqueisemployedtoconstraintheshapeofsurfaces.Themethodofpreservingpositivityontheinterpolationsurfaceandconstraintoninterpolatingdataisalsodeveloped.Theadvantageofthisnewmethodisthatitcanbeusedtoconstraintheshapeofaninterpolatingsurfaceonlybyselectingsuitableparameters,andnumericalexamplesarepresentedtoshowtheperformanceofthemethod.

简介：Therecentrapiddevelopmentsintheautomobileindustryhavedemandedtheextensiveuseofgalvannealed(GA)steelsheets.Inparticular,thedevelopmentoflightweightautomobilesisputtingincreasinglyhigherrequirementsonthestrengthofGAsteelsheets.Thegalvannealfurnace,whichisusedforprocessinggalvannealedsteelsheets,istypicallycomposedoftheinductionheatingsection,holdingsectionandfogcoolingsection.Thispaperdescribedthestructuralcharacteristicsofeachcomponentofthegalvannealfurnace,andanalyzedtemperaturecontrolmethodsofthegalvannealfurnacethatareimportantforthesuccessfulproductionofhigh-strengthGAsteelsheetsforautomotiveapplications.

简介：正常冲击波，在一个机翼上终止一个本地超声的区域，限制它的表演并且成为来源高加速冲动的噪音。使用被动控制瓦解被建议冲击波。这个方法获得的流动结构的细节数字地被学习。一个新边界条件被开发了，它的应用程序的结果在嘴流动对实验被验证。崩溃被证实了并且详细说明流动细节的分析的冲击波的方法被介绍。由渐渐的压缩的一个冲击波的替换完全改变高速度的来源它的减小的冲动的噪音和熊潜力。关键词接近音速的流动-冲击波边界层相互作用-被动控制CLC数字O357.4+2

简介：Exportcontrolmeansthatacountryoranumberofcountrieslimitandprohibittheexportofcertainmaterialsandtechnologiesbyadministrativeandlegalmeanssoastoachievespecificpolitical,militaryandeconomicpurposes.Themaintargetsofexportcontrolaremilitarymaterialsandtechnologiesaswellasotherstrategicallysensitivematerials.Withthe

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简介：自主学习是现代教育领域提倡的一种新型学习模式，但人们空间有没有这种“自主”的潜质，本文让我们一同探视一番！

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简介：RecentstudiesrevealingtheimportantrolesofmicroRNAs（miRNAs）inregulatingexpressionofionchannelgeneshaveopeneduparesearchfieldforextendinganddeepeningourinvesti-gationintothecardiacexcitabilityandtheassociatedarrhythmogenesis.Cardiacexcitability,thefundamentalpropertyofthecardiacmyocytes,definesthecardiacconduction,repolarization,automaticity,intracellularcalciumhandling,andtheirregionalheterogeneity.OurpreviousandongoingstudiesandtheworkfromotherlaboratorieshavedemonstratedthesignificantinvolvementofmiRNAsinregulatingeveryaspectsofcardiacexcitability.Wehavefoundearlierthatthemuscle-specificmiRNAmiR-1boostsupthearrhythmogenicpotentialthroughtargetinggapjunctionchannelconnexin43inmyocardialinfarction.AsubsequentstudyrevealedthatmiR-1canalsocausearrhythmiasbyimpairingCa2+handlingbytargetingphosphatase.Wethenidentifiedanothermuscle-specificmiRNAmiR-133promotesabnormalQTprolongationbyrepressingHERGK+channelexpressionindiabeticcardiomyopathy.Subsequently,wediscoveredthatbothmiR-1andmiR-133areinvolvedinthereexpressionofpacemakerchannelsHCN2/HCN4toenhanceabnormalautomaticityincardiachypertrophy.Recently,wefurtheridentifiedmiR-328asanimportantdeterminantforatrialfibrillation（AF）andtheassociatedadverseatrialelectricalremodelingviatargetingL-typeCa2+channels.Whilealltheabove-mentionedmiRNAsareproarrhythmic,wehavenewlyidentifiedforthefirsttimeanaturalantiarrhythmicmiRNAmiR-26.WefoundthatallthreemembersofthemiR-26familyisdownregulatedintheirexpressioninAFtissuesandthisdownregulationincreasesAFvulnerabilityasaresultofremovalofanendogenousantiarrhythmicfactor.miR-26downregulationshortensatrialactionpotentialfavoringAFbyincreasinginwardrectifierK+current（IK1）density.ThisiscausedbyanupregulationofKir2.1K+channelsu

简介：ＰｏｐｕｌａｔｉｏｎＡｇｉｎｇａｎｄＣｏｎｔｒｏｌｏｆＰｏｐｕｌａｔｉｏｎＧｒｏｗｔｈＴｕＰｉｎｇＲａｐｉｄｐｏｐｕｌａｔｉｏｎａｇｉｎｇＷｉｔｈａｂｉｇｄｒｏｐｉｎｆｅｒｔｉｌｉｔｙａｆｔｅｒｔｈｅ１９７０ｓ，ｔｈｅｐｒｏｐｏｒｔｉｏｎｏｆｃｈｉｌ...

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简介：EllipticPDE-constrainedoptimalcontrolproblemswithL^1-controlcost(L^1-EOCP)areconsidered.TosolveL^1-EOCP,theprimal-dualactiveset(PDAS)method,whichisaspecialsemismoothNewton(SSN)method,usedtobeapriority.However,ingeneralsolvingNewtonequationsisexpensive.Motivatedbythesuccessofalternatingdirectionmethodofmultipliers(ADMM),weconsiderextendingtheADMMtoL^1-EOCP.TodiscretizeL^1-EOCP,thepiecewiselinearfiniteelement(FE)isconsidered.However,differentfromthefinitedimensionalL^1-norm,thediscretizedL^1-normdoesnothaveadecoupledform.Toovercomethisdifficulty,aneffectiveapproachisutilizingnodalquadratureformulastoapproximatelydiscretizetheL^1-normandL^2-norm.Itisprovedthattheseapproximationstepswillnotchangetheorderoferrorestimates.Tosolvethediscretizedproblem,aninexactheterogeneousADMM(ihADMM)isproposed.DifferentfromtheclassicalADMM,theihADMMadoptstwodifferentweightedinnerproductstodefinetheaugmentedLagrangianfunctionintwosubproblems,respectively.Benefitingfromsuchdifferentweightedtechniques,twosubproblemsofihADMMcanbeefficientlyimplemented.Furthermore,theoreticalresultsontheglobalconvergenceaswellastheiterationcomplexityresultso(1/k)forihADMMaregiven.Inordertoobtainmoreaccuratesolution,atwo-phasestrategyisalsopresented,inwhichtheprimal-dualactiveset(PDAS)methodisusedasapostprocessoroftheihADMM.Numericalresultsnotonlyconfirmerrorestimates,butalsoshowthattheihADMMandthetwo-phasestrategyarehighlyefficient.

简介：Arobustadaptiverepetitivelearningcontrolmethodisproposedforaclassoftime-varyingnonlinearsystems.Nussbaum-gainmethodisincorporatedintothecontroldesigntocounteractthelackofaprioriknowledgeofthecontroldirectionwhichdeterminesthemotiondirectionofthesystemunderanyinput.Itisshownthatthesystemstatecouldconvergetothedesiredtrajectoryasymptoticallyalongtheiterationaxisthroughrepetitivelearning.Simulationiscarriedouttoshowthevalidityoftheproposedcontrolmethod.

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