简介：基于阶段空间重建的推迟时间的嵌入方法，计算脑电图(EEG)的近似的熵(ApEn)的一个新方法被建议。计算结果证明在有嵌入尺寸的变化的近似的熵癫痫的EEG和正常EEG之间有重要差别。这个结论是有用的由熵分析不同EEG的动态行为。

简介：ＡＰＰＲＯＸＩＭＡＴＥＭＥＲＧＩＮＧＯＦＢｅＺＩＥＲＣＵＲＶＥＳＴｏｎｇＲｕｏｆｅｎｇ；ＨｕＳｈｉｍｉｎ；ＷａｎｇＧｕｏｚｈａｏＡｂｓｔｒａｃｔ：Ｉｎｔｈｉｓｐａｐｅｒ，ａｓｉｍｐｌｅｍｅｔｈｏｄｆｏｒｍｅｒｇｉｎｇｏｆＢｅｚｉｅｒｃｕｒｖｅｓｉｓｐ...

简介：Thispapergivesfourpairsofentropies(η_i,q_i)(i=1,2,3,4)totheisentropicgasdynamicsequationsρ_t+(ρu)_x=0(ρu)_t+(ρu~2+p(ρ))_x=0p(ρ)=k~2ρ~γ,1<γ<3。whenallthefunctionequationsaresatisfied

简介：由阳光等在我们证明近似近似方法forDC功能的集中的这篇论文求婚了[6]。我们的分析也允许对待准确方法。Wethen在DC功能的第二个部件是可辨的并且提供证明了我们的方法的效率的一些计算经验的情况中建议有趣的结果。

简介：WeconsideroptimalbirthcontrolfortheMcKendrickequationofpopulationdyna-mics.Itconsistsofoptimizingasystemdescribedbyafirstorderpartialdifferentialequationwithnonlo-calbilinearboundarycontrol.ApproximateminimumprinciplesareobtainedusingEkeland’svariationalprinciple.

简介：Weconsidertheclassicalpolicyiterationmethodofdynamicprogramming(DP),whereapproximationsandsimulationareusedtodealwiththecurseofdimensionality.Wesurveyanumberofissues:convergenceandrateofconvergenceofapproximatepolicyevaluationmethods,singularityandsusceptibilitytosimulationnoiseofpolicyevaluation,explorationissues,constrainedandenhancedpolicyiteration,policyoscillationandchattering,andoptimisticanddistributedpolicyiteration.Ourdiscussionofpolicyeva...

简介：ThepaperpresentsandprovesanapproximateoptimalrelationshipbetweensamplesizenandacceptancenumbercinthesamplingplansunderimperfectinspectionwhichminimizetheBayesianrisk.TheconclusiongeneralizestheresultobtainedbyA.Haldontheassumptionthattheinspectionisperfect.

简介：Approximatequeryprocessinghasemergedasanapproachtodealingwiththehugedatavolumeandcomplexqueriesintheenvironmentofdatawarehouse.Inthispaper,wepresentanovelmethodthatprovidesapproximateanswerstoOLAPqueries.Ourmethodisbasedonbuildingacompressed(approximate)datacubebyaclusteringtechniqueandusingthiscompresseddatacubetoprovideanswerstoqueriesdirectly,soitimprovestheperformanceofthequeries.WealsoprovidethealgorithmoftheOLAPqueriesandtheconfidenceintervalsofqueryresults.AnextensiveexperimentalstudywiththeOLAPcouncilbenchmarkshowstheeffectivenessandscalabilityofourcluster-basedapproachcomparedtosampling.

简介：ConcernedwiththeexistenceandconvergencepropertiesofapproximatesolutiontomultivaluednonlinearmixedvariationalinclusionprobleminaHilbertspace,weestablishedtheequivalencebetweenthevariationalinclusionandthegeneralresolventequations,obtainedthreeiterativealgorithms,providedtheconvergenceanalysisofthealgorithms.Theresultsobtainedimproveandgeneralizeanumberofresentresults.

简介：The2Dplanegasflowunderheating(withnonentityboundarycondition)hasbeendiscussedbytheanalyticalapproachinthispaper.Theapproximateanalyticalsolutionshavebeenobtainedfortheflowpassingvariouskindsofheatsources.Solutionsdemonstratethethermaldisplacementphenomenaarestronglydependontheheatingintensity.

简介：ThesolutionfortheDuffingequationinanonlinearvibrationproblemisstudiedinthispaper.Clearly,inthecaseoftheperturbparameterbeingalargervalue,thetraditionalperturbationmethodisnolongervalidbuttheHomotopyPerturbationMethod（HPM）isapplicableusually.HPMisusedtosolvetheweakandstrongnonlineardifferentialequationsforfindingtheperturbedfrequencyoftheresponse.TheobtainedfrequenciesviaHPMandtheapproximatemethodhavegoodaccordanceforweakandstrongnonlineardifferentialequations.Additionally,thecalculatedresponsesbyuseoftheapproximatemethodarecomparedwiththeresponsesobtainedfromtheNumericalmethodinthetimehistoryoftheresponseandphaseplane.Theresultsrepresent~oodaccordancebetweenthem.

简介：ＡｎＡｐｐｒｏｘｉｍａｔｅＡｌｇｏｒｉｔｈｍｏｆＧｅｎｅｒａｔｉｎｇＶａｒｉａｔｅｓｗｉｔｈＡｒｂｉｔｒａｒｙＣｏｎｔｉｎｕｏｕｓＳｔａｔｉｓｔｉｃａｌＤｉｓｔｒｉｂｕｔｉｏｎｓ￥ＺｈａｎｇＺｈｅｎｇｊｕｎ；ＹａｎｇＺｉｑｉａｎｇ；ＺｈａｎｇＣｈｕｎ...

简介：Theexploitationofdifferentnon-rigorousmathematicalmodelsasopposedtothesatelliterigorousmodelsisdiscussedforgeometriccorrectionsandtopographic/thematicmapsproductionofhigh-resolutionsatelliteimagery(HRSI).Furthermore,thispaperfocusesontheeffectsofthenumberofGCPsandtheterrainelevationdifferencewithintheareacoveredbytheimagesontheobtainedgroundpointsaccuracy.Fromtheresearch,itisobviouslyfoundthatnon-rigorousorientationandtriangulationmodelscanbeusedsuccessfullyinmostcasesfor2Drectificationand3Dgroundpointsdeterminationwithoutacameramodelorthesatelliteephemerisdata.Inaddition,theaccuracyuptothesub-pixellevelinplaneandaboutonepixelinelevationcanbeachievedwithamodestnumberofGCPs.

简介：Itisacommonpracticetouseahydrologicalcontinuityequationasthegoverningequationindetentionponddesign.Althoughthedetentionvolumecanbeevaluatedusinganumericalmethodandcomputerprogram,theyarenotavailableforengineerstousebecauseofthedifficultyinvolvedinthenumericalevaluationorthecomputerprogrammaynotbereadyforengineers.Thisstudyintendstoprovideaformulaforcalculatingthevolumeofadetentionpond.Anonlinearcontinuityequationfordetentionponddesignisobtainedbyapplyingatriangular/trapezoidalinflowhydrographandspillwayororificefortheoutflowdevice.Thisperturbationmethodisemployedtoresolvetheequation.Afterdiscussingtheomissionandcurvefittingmethods,aformulafordetentionponddesignisproposed.Severalexamplesaredisplayedandahighagreementwiththenumericalresultisobtained.

简介：当历史的中国书法工作是被数字化，检索的问题成为新挑战。但是，当前，没有光学字符识别技术能把书法字符图象变换成文本，存在笔迹字符识别途径也不能为它工作。这篇论文建议一条新奇途径到高效地根据类似检索中国书法人物：书法特性图象被许多歧视的特征代表，并且有合理有效性的高检索速度被完成。首先，没有类似于询问的可能性的书法字符被比较字符复杂性，笔划密度和笔划伸出一步一步地滤出。然后，类似的书法人物根据他们近似形状火柴生产的匹配的费用被检索并且评价。以便加快检索，我们采用了高维的数据结构—PK树。最后，算法的效率被一个初步的实验与3012幅书法特性图象表明。电子增补材料这篇文章(doi:10.1007/s11390-007-9077-8)的联机版本contatins增补材料，它对授权用户可得到。

简介：TheexistenceofapproximateinertialmanifoldusingwavelettoBurgers'equation,andnumericalsolutionundermultiresolutionanalysiswiththelowmodeswerestudied.ItisshownthattheBurgers'equationhasagoodlocalizationpropertyofthenumericalsolutiondistinguishably.

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简介：一个近似方法向前被带预言声学的压力基于表面velocity.It被称为方法(ERSM).The学习在声学的压力由在统一速度和其它表面元素颤动的相应表面元素散发了的声学的转移向量(ATV)平等者发现那个各个元素的元素放射重叠保留still.that声学的压力被相应困惑的pistonvibrating在统一velocity.So散发，它利用声学的压力radiat

简介：稳定的laminar流动的问题的一个近似答案一粘滞在一张拉长的表上的不可压缩的电子上进行的液体被介绍。途径基于拉长流动问题的变量然后使用最少的广场方法最小化一个微分方程的剩余的想法。流动特征上的磁场的效果与Hartman数字的不同价值通过数字计算被表明。

简介：Theon-linecomputationalburdenrelatedtomodelpredictivecontrol(MPC)oflarge-scaleconstrainedsystemshampersitsreal-timeapplicationsandlimitsittoslowdynamicprocesswithmoderatenumberofinputs.Toavoidthis,anefficientandfastalgorithmbasedonaggregationoptimizationisproposedinthispaper.Itonlyoptimizesthecurrentcontrolactionattimeinstantk,whileotherfuturecontrolsequencesintheoptimizationhorizonareapproximatedoff-linebythelinearfeedbackcontrolsequence,sotheon-lineoptimizationcanbeconvertedintoalowdimensionalquadraticprogrammingproblem.Inputconstraintscanbewellhandledinthisscheme.Thecomparableperformanceisachievedwithexistingstandardmodelpredictivecontrolalgorithm.Simulationresultswelldemonstrateitseffectiveness.