简介：Theboundedparameterestimationproblemanditssolutionleadtomoiemeaningfulresults.Itssuperiorperformanceisduetothefactthatthenewmethodguaranteesthattheeffectoftheuncertaintieswillneverbeunnecessarilyoverestimated.Wethenconsiderhowtoupdateanddowndatetheboundedparameterestimationproblem.WhenupdatinganddowndatingofSVDareusedtothenewproblem,specialtechnologiesaretakentoavoidformingUandVexplicitly,thenincreasethealgorithmperformance.BecauseofthelinkbetweentheboundedparameterestimationandTikhonovregularizationprocedure,wepointoutthatouralgorithmscanalsobeusedtomodifyregularizationproblem.

简介：Inthispaper,Usingthedailystockreturndata,weshowthatShanghaistockmarketpricesexhibitlongmemoryprocess,andestimatethelong-memoryparametersbywavelet.Usingthesparsewaveletrepresentationofamatrixoperator,weareabletoapproximateanARFIMAmodelslikelihoodfunctionwiththeseries＇swaveletcoefficientsandtheirvariances.MaximizationofthisapproximatelikelihoodfunctionoverthelongmemoryparameterspaceresultsintheapproximatewaveletmaximumlikelihoodestimatesoftheARFIMAmodel.

简介：侦察混血儿雷达信号的一条参数评价途径联合了调音的频率移动(频移键控)，调音的阶段移动(PSK)被介绍。第一，多相的差别被采用计算即时频率(如果)FSK/PSK，那么，频移键控的频率点从直方图被估计如果。PSK的代码率从阶段断绝的地点被提取。最后，收到的信号的平方的多相的差别被计算估计频移键控的代码率。当signal-to-noise比率(SNR)在11dB上面时，介绍算法有参数评价的更高的精确性。

简介：Itisshownthatorbitalangularmomentum(OAM)isapromisingnewresourceinfutureclassicalandquantumcommunications.However,theseparationofOAMmodesisstillabigchallenge.Inthispaper,weproposeasimpleandefficientseparationmethodwitharadialvaryingphase.Inthemethod,specificradialvaryingphasesaredesignedandmodulatedfordifferentOAMmodes.Theresultantbeamisfocusedtothespotswithdifferenthorizontalandverticalpositionsafteraconvexlens,whenthecoordinatetransformation,includingtwoopticalelementswithcoordinatetransformationphaseandcorrectphase,operatesonthereceivedbeam.Thehorizontalpositionofthespotisdeterminedbythevortexphases,andtheverticalpositionofthespotisdependentontheradialvaryingphases.ThesimulationandexperimentalresultsshowthattheproposedmethodisfeasiblebothforseparationoftwoOAMmodesandseparationofthreeOAMmodes.TheproposedseparationmethodisavailableinprincipleforanyneighboringOAMmodesbecausetheradialvaryingphaseiscontrolled.Additionally,noextrainstrumentsareintroduced,andthereisnodiffractionandnarrowingprocesslimitationfortheseparation.

简介：我们在场微分照(DQ)的申请为有指数地基于Euler-Bernoulli，Timoshenko，瑞迪，和Levison的四个不同横梁理论改变僵硬的nanobeams的弄弯的分析的方法。明确的表达基于Eringen的非局部的弹性理论。新结果被介绍为指导了并且简单地支持了指导边界条件。数字结果被获得在批评弄弯负担参数上调查非局部的参数，length-to-height比率，边界条件，和不一致的参数的效果。当批评弄弯负担参数随length-to-height比率的增加增加时，批评弄弯负担随非局部的参数的增加减少，这被观察当批评弄弯负担参数随length-to-height比率的增加增加时。

简介：Bymeansofreasonableassumptionandmathematicalderivation,atheoreticexpressionofflowrateforasinglefracturewithlinearlyvaryingwidthwasobtained.Themathematicalderivationwasbasedonthecubiclawandthenewtheoreticexpressionwasanextentionoftraditionalparallelplatemodel.Thisstudymayhelptoanalyzeseepageinfracturedrockmass.

简介：Thispaperstudiestheexponentialstabilityofintervaltime-varyingdynamicalsystemwithmultidelay.Bythematrixmeasureanddelaydifferentialinequality,somesufficientconditionsforexponentialstabilityofintervaltime-varyingdynamicalsystemwithmultidelayareestablished.Theseconditionsareanimprovementandextensionoftheresultsachievedinearlierpapers.Finally,anumericalexampleisgiventodemonstrateourresult.

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简介：TyphoonKROSAin2007issimulatedusingGRAPES,amesoscalenumericalmodel,inwhichatwo-parametermixed-phasemicrophysicsschemeisimplanted.Aseriesofnumericalexperimentsaredesignedtotestthesensitivityoflandfallingtyphoonstructureandprecipitationtovaryingcloudmicrophysicsandlatentheatrelease.Itisfoundthattyphoontrackissensitivetodifferentmicrophysicalprocessesandlatentheatrelease.Thecloudstructuresofsimulatedcyclonescanbequitedifferentwiththatofvaryingmicrophysicalprocesses.Graupelparticlesplayanimportantroleintheformationoflocalheavyrainfallandthemaintenanceofspiralrainbands.Analysisrevealsthatthefeedbackoflatentheattodynamicfieldscansignificantlychangethecontentanddistributionofcloudhydrometeors,thushavinganimpactonsurfaceprecipitation.

简介：Thecontrollabilityandobservabilityofnetworkedcontrolsystemsarestudied.Aimingatthenetworkedcontrolsystemwithtime-varyingdelay,thesufficientandnecessaryconditionsforcompletecontrollabilityandcompleteobservabilityofthesystemarepresented,respectively.BecauseofMarkovcharacteristicofthenetwork-induceddelay,intermsofstochastictheory,asufficientandnecessaryconditionforcompletelymeanvaluecontrollabilityofnetworkedcontrolsystemsisobtained.Further,theconditionsthatthecontrollabilityandobservabilityofnetworkedcontrolsystemsareequivalenttotheinitialtime-invariantsystemaregiven.Controllabilityandobservabilityrealizationindexesarealsodiscussed,respectively.Thenumericalexampledemonstratestheeffectivenessoftheproposedtheory.

简介：Newdelay-independentanddehy-dependentstabilitycriteriaforlinearsystemswithmultipletime-varyingdelaysareestablishedbyusingthetime-domainmethod.Theresultsarederivedbasedonanew-typestabilitytheoremforgeneralretardeddynamicalsystemsandnewanalysistechniquesdevelopedintheauthor'spreviouswork.Unlikesomeresultsintheliterature,alloftheestablishedresultsdonotdependonthederivativeoftime-varyingdelays.Therefore,theyaresuitableforthecasewithveryfasttime-varyingdelays.Inaddition,someremarksarealsogiventoexphintheobtainedresultsandtopointoutthelimitationsofthepreviousresultsintheliterature.

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简介：Inthispaper,exponentialstabilityofHopfield-typeneuralnetworkswithtime-varyingdelaysareanalyzed.ByusingtheLyapunovfunctionalmethod,sufficientconditionsareobtainedforgeneralexponentialstabilities.Atthesametime,theoutputfunctionsdonotsatisfytheLipschitzconditionsanddonotrequiretherntobedifferentialorstrictlymonotonouslyincreasing.Moreover,allresultsareestablishedwithoutassuminganysymmetryoftheconnectionmatrix.Amtmericexampleispressentedtoshowtheeffectiveofthesecriteria.

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简介：我们与一个悦耳的攻击信息参数为建筑群的坚韧性介绍一个新奇模型。知道的随机的失败和故意的攻击是我们的模型的二种极端情况。基于模型，我们分别地在随机的信息和优先的信息下面学习复杂网络的坚韧性。用产生函数方法，我们为网络的崩溃和巨大的部件的尺寸导出节点的批评移动部分的准确的值。我们证明随机隐藏就节点的小部分能阻止一个没有规模的网络折叠并且检测就节点preferentiallycan破坏的小部分一个没有规模的网络。

简介：<正>Thispaperconsiderstheadmissibilityoftheestimatorsforfinitepopulationwhentheparameterspaceisrestricted.Weobtainalladmissiblelinearestimatorsofanarbitrarylinearfunctionofcharacteristicvaluesofafinitepopulationintheclassoflinearestimatorsunderthecriterionoftheexpectationofmeansouarederror.

简介：Thereadoutintegratedcircuit(ROIC)technologyisoneofthecriticaltechnologiesintheresearchofaninfraredfocalplanearray(IRFPA).Basedonthevirtualinstrumenttechnology,asystemforparametertestofROICisdevelopedforIRFPA.Thecomplexprogrammablelogicdevice(CPLD)isappliedintothesystemtoincreaseitsflexibility.Withhighreliabilityandprecision,alongwiththeintegratedsoftwareandhardwareenvironment,thesystemcantestallkindsofROICs.

简介：Inthispaper,westudyadaptivefiniteelementdiscretisationschemesforaclassofparameterestimationproblem.Weproposetouseadaptivemulti-meshesindevelopingefficientalgorithmsfortheestimationproblem.Wederiveequivalentaposteriorierrorestimatorsforboththestateandthecontrolapproximation,whichparticularlysuitanadaptivemulti-meshfiniteelementscheme.Theerrorestimatorsarethenimplementedandtestedwithpromisingnumericalresults.

简介：Thispaperpresentsasemi-empiricallumpedparametermodeldevelopedforanalysingthedynamicstabilityandperformancelimitationsofapressurecompensatedvanepumpforanautomotiveapplicationwithlow-costcomponents.Themodelcalculatescontinuousdisplacementchamberpressureprofilesandinertialeffectsforthedeterminationoftheinternalforcesactingonthevanepump'spivotingcam.Measurementsconductedonacustomteststandwereusedtodefineanonlinearlyprogressivebiasspringmodelandablackboxrepresentationofthepumpcontrolsystemvalves.Analysisofthecompletemodelrevealsthattheperformancelimitationsimposedbythecontrolsystemvalves,intermsofsystemstabilityandachievablecontrollerbandwidth,aremorerestrictivethanthelimitationsimposedbythelow-costvanepumpandlimitthethatbandwidthto1.84Hz.Thecontrolsystemalsoimposeslimitationstothesystemperformancebasedonresonancephenomenawhichmaybesignificantinsomeapplications.