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简介:Thepossibleintermittentimpactsofatwo-stageisolationsystemwithrigidlimitershavebeeninvestigated.TheisolationsystemisunderperiodicexternalexcitationdisturbedbysmallstationaryGaussianwhitenoiseaftershock.ThemaximalimpactPoincaremapisproposedbasedonthemulti-bodydynamicswithunilateralconstrains.Thenintheperiodaftershock,thezeroorderapproximatestochasticdiscretemodelandthefirstorderapproximatestochasticmodelaredeveloped.TherealisolationsystemofanMTUdieselengineisusedtoevaluatetheestablishedmodel.Aftercalculatingofthenumericalexample,theeffectsofnoiseexcitationontheisolationsystemarediscussed.Theresultsshowthatthepropertyofthesystemiscomplicatedduetointermittentimpact.Thedifferencebetweenzeroordermodelandthefirstordermodelmaybegreat.Theeffectofsmallnoiseisobvious.Theresultsmaybeexpectedusefultothenavaldesigners.更多还原
简介:AccordingtoaclassofnonlinearSISOdiscretesystems,thefuzzyslidingmodecontrolproblemisconsidered.BasedonTakagi-Sugenofuzzymodelmethod,afuzzymodelisdesignedtodescribethelocaldynamicperformanceofthegivennonlinearsystems.Byusingtheslidingmodecontrolapproach,theglobalcontrollerisconstructedbyintegratingallthelocalstatecontrollersandtheglobalsupervisoryslidingmodecontroller.Thetrackingproblemcanbeeasilydealtwithbytakingadvantageofthecombinedcontroller,andtherobustnessperformanceisimprovedfinally.Asimulationexampleisgiventoshowtheeffectivenessandfeasibilityofthemethodproposed.
简介:最近,为小摆动差错的快速的察觉的一条途径为连续时间的系统基于确定的学习理论被建议。在这份报纸,一个差错察觉计划经由确定的学习为非线性的分离时间的系统的一个班被建议。由使用确定的学习算法的分离时间的扩展,一般差错工作(即,内部动力学)内在的正常和非线性的分离时间的系统的差错模式被分离时间的动态光线的基础功能(RBF)局部地精确地接近网络。然后,有嵌入的系统动力学的获得的知识的评估者的一个银行被构造,并且一套剩余被获得并且过去常测量监视系统的动力学和训练系统的动力学之间的差别。一个差错察觉决定计划根据最小的剩余原则被介绍,即,一个差错的出现能被比较剩余的大小在一个分离时间的背景检测。差错detectability分析被执行,察觉时间的上面的界限被导出。一个模拟例子被给说明建议计划的有效性。
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简介:这份报纸利用一个修改水财务模型(WAM)在18202007年7月期间在山东追踪一个极端降水事件的潮湿来源。在处理水预算的剩余的不同方法总是在再循环计算的潮湿生产不同结果,这被发现。另外,从没有剩余的向后的追踪的结果在对从向前与剩余追踪的那些的完全的同意,并且反过来也如此,暗示数学一致性。我们因此分析并且发源二条追踪的途径与对方一起在下面等同的条件。我们把向后的追踪用于山东极端降雨案例并且获得了三个选择区域的潮湿贡献的量的估计离开降雨区域。结果显示空间模式而非再循环的潮湿的数字价值在追踪潮湿来源是更可靠的。这个山东降雨事件的潮湿在西南中国主要来自附近迎风的区域,它具有陆上的起源;当从附近的韦斯特太平洋发源的潮湿贡献很少到这个事件时。
简介:AnotherGrandEventofTibetanBuddhism──The11thBainqenErdeniInitiatedIntoMonkhoodHUAZIThe11thBainqenErdeni,confirmedthroughthemet...
简介:ThecentralPacific(CP)zonalwinddivergenceandconvergenceindicesaredefined,andtheformingmechanismofCPElNio(LaNia)eventsisdiscussedpreliminarily.Theresultsshowthatthedivergenceandconvergenceofthezonalwindanomaly(ZWA)arethekeyprocessintheformingofCPElNio(LaNia)events.AcorrelationanalysisbetweenthecentralPacificzonalwinddivergenceandconvergenceindicesandcentralPacificElNioindicesindicatesthatthereisaremarkablelagcorrelationbetweenthem.ThecentralPacificzonalwinddivergenceandconvergenceindicescanbeusedtopredicttheCPevents.Basedontheseresults,alinearregressionequationisobtainedtopredicttheCPElNio(LaNia)events5monthsahead.
简介:在这篇论文,在2005年3月9日发生在黄海上的一个波涛汹涌的海雾事件被调查。与在它的成熟阶段的几百公里的空间规模,海雾补丁在一些地点沿着山东半岛海岸把可见性归结为100m或少得多。在岛和海岸的卫星图象,表面观察和soundings,和从日本气象学机构(JMA)的分析被用来描述并且分析这个事件。分析显示这海雾能作为使雾凉下来的移流被分类。包括雾区域和它的运动的这海雾的主要特征被大气的研究Mesoscale模型(MM5)的第五产生的宾夕法尼亚州的大学/公民中心相当复制。模型结果建议这个事件的形成和进化能是被构画出:(1)低级空气的南方的温暖/潮湿的移流与大约600m的厚度导致了强壮的sea-surface-based倒置;(2)当倒置从更温暖的东方海搬到更冷的黄海时,当海雾响应由混合的骚乱冷却并且弄湿成长了时,热内部边界层(TIBL)逐渐地在倒置的底形成了;(3)当TIBL向北方移动了,(4)强壮的在北方的寒冷和干旱风破坏了TIBL并且驱散海雾,海雾发展了。这研究的主要调查结果是海雾响应相对坚持的南方的温暖/潮湿的风和冷海面形成,并且由风切变混合的那骚乱是为使海洋的层凉下来并且弄湿的主要机制。另外,敏感实验的学习显示确定的数字建模提供一答应在黄海而是它上的海雾的预言的途径可能是更有效的认为整体数字因为极端敏感,当模特儿为输入建模。
简介:Inordertodeepentheunderstandingofthedifferencebetween0!1and1!0sinleeventupset(SEU)cross-sectioninanovelactivedelayelement(ADE)SRAM(StaticRandomAccessMemory)cell,theirradiationwascarriedoutatHeavyIonResearchFacilityinLanzhou(HIRFL).Usingthe86Kr26+ionsirradiatedthedeviceundertest(DUT)adoptedpartiallydepleted(PD)siliconofinsulator(SOI)technology.ThefeaturesizeofDUTfabricatedbyinstituteofmicroelectronic(IME)was180nm.TheschematicdiagramofSEUhardenADE-SRAMcellisshowninFig.1.TheADEisessentiallyaNMOSconnectedinonlyoneofthefeedbackpathsbetweenthetwoinventorsofthememorycell.Itplaysaroleasswitchingtransistor.Exceptduringawriteoperation,whentheswitchtransistoristurnedon(soasnottocompromisethewritespeed),theoff-ADEprovidesamuchgreaterRCdelaybetweenthetwoinventorsofthememorycelltoachievemuchimprovedSEUhardness[1].
简介:ThediscreteSobolev’sinequalitiesinL_pnormareprovedforthree-dimensionalsphericalandcylindricalcoordinates,byusingdiscreteHolderinequality.propertyofthetrianglefunctionsandcomplicateddeduction.
简介:Theboundaryelementapproximationoftheparabolicvariationalinequalitiesofthesecondkindisdiscussed.First,theparabolicvariationalinequalitiesofthesecondkindcanbereducedtoanellipticvariationalinequalitybyusingsemidiscretizationandimplicitmethodintime;thentheexistenceanduniquenessforthesolutionofnonlinearnon-differentiablemixedvariationalinequalityisdiscussed.Itscorrespondingmixedboundaryvariationalinequalityandtheexistenceanduniquenessofitssolutionareyielded.Thisprovidesthetheoreticalbasisforusingboundaryelementmethodtosolvethemixedvariationalinequality.
简介:Compactlysupportedradialbasisfunctioncanenablethecoefficientmatrixofsolvingweighlinearsystemtohaveasparsebandedstructure,therebyreducingthecomplexityofthealgorithm.Firstly,basedonthecompactlysupportedradialbasisfunction,thepapermakesthecomplexquadraticfunction(Multiquadric,MQforshort)tobetransformedandproposesaclassofcompactlysupportedMQfunction.Secondly,thepaperdescribesamethodthatinterpolatesdiscretemotioncapturedatatosolvethemotionvectorsoftheinterpolationpointsandtheyareusedinfacialexpressionreconstruction.Finally,accordingtothischaracteristicoftheunevendistributionofthefacemarkers,themarkersarenumberedandgroupedinaccordancewiththedensitylevel,andthenbeinterpolatedinlinewitheachgroup.Theapproachnotonlyensurestheaccuracyofthedeformationoffacelocalareaandsmoothness,butalsoreducesthetimecomplexityofcomputing.
简介:Basedonthemulti-sensoroptimalinformationfusioncriterionweightedbymatricesinthelinearminimumvariancesense,usingwhitenoiseestimators,anoptimalfusiondistributedKalmansmootherisgivenfordiscretemulti-channelARMA(autoregressivemovingaverage)signals.Thesmoothingerrorcross-covariancematricesbetweenanytwosensorsaregivenformeasurementnoises.Furthermore,thefusionsmoothergiveshigherprecisionthananylocalsmootherdoes.