简介：由刺的阀值的频率依赖上的数字模拟，即为到火的一个神经原，在周期的刺激的批评振幅上，我们发现那浓密在耳蜗的原子展览频率选择行为的房间。然而，选择频率乐队一浓密房间是远的离开的比较喜欢光谱在人和哺乳动物的范围听觉的感觉。位于这项神经活动下面的机制也被讨论。离子隧道密度举办的Furtherstudies表演选择频率乐队上的很少影响浓密房间。这些调查结果建议频率选择在的neuronal行为浓密在单个房间和人口层次的房间可能不与频率辨别机能上地相关。我们的结果可以揭示一个神经提示到再考虑在上浓密房间在声音的听觉的信息处理的功能的角色频率“。

简介：ＢＯＵＮＤＥＤＮＥＳＳＡＮＤＢＬＯＷＵＰＦＯＲＴＨＥＧＥＮＥＲＡＬＡＣＴＩＶＡＴＯＲ－ＩＮＨＩＢＩＴＯＲＭＯＤＥＬＬｉＭＩＮＧＤＥ（李名德）；ＣＨＥＮＳＨＡＯＨＵＡ（陈绍华）；ＱＩＮＹＵＣＨＵＮ（秦禹春）（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｈｅｍａｔｉｃ...

简介：Aspeechsignalprocessingandfeaturesextractingmethodbasedoncomputationalauditorymodelisproposed.Thecomputationalmodelisbasedonpsychological,physiologicalknowledgeanddigitalsignalprocessingmethods.Ineachstageofahearingperceptionsystem,thereisacorrespondingcomputationalmodeltosimulateitsfunction.Basedonthismodel,speechfeaturesareextracted.Ineachstage,thefeaturesindifferentkindsoflevelareextracted.Afurtherprocessingforprimaryauditoryspectrumbasedonlateralinhibitionisproposedtoextractmuchmorerobustspeechfeatures.Allthesefeaturescanberegardedastheinternalrepresentationsofspeechstimulationinhearingsystem.Therobustspeechrecognitionexperimentsareconductedtotesttherobustnessofthefeatures.Resultsshowthattherepresentationsbasedontheproposedcomputationalauditorymodelarerobustrepresentationsforspeechsignals.

简介：ThepaperpresentsthebasicmodelforthetransmissiondynamicsofWestNilevirus(WNV).Themodel,whichconsistsofsevenmutually-exclusivecompartmentsrepresentingthebirdsandvectordynamics,hasalocally-asymptoticallystablediseasefreeequilibriumwhenevertheassociatedreproductionnumber(R0)islessthanunity.Asrevealin[3,20],theanalysesofthemodelshowtheexistenceofthephenomenonofbackwardbifurcation(wherethestabledisease-freeequilibriumofthemodelco-existswithastableendemicequilibriumwhenthereproductionnumberofthediseaseislessthanunity).Itisshown,thatthebackwardbifurcationphenomenoncanberemovedbysubstitutingtheassociatedstandardincidencefunctionwithamassactionincidence.Analysisofthereproductionnumberofthemodelshowsthat,thediseasewillpersist,wheneverR0>1,andincreaseinthelengthofincubationperiodcanhelpreduceWNVburdeninthecommunityifacertainthresholdquantities,denotedby△band△varenegative.Ontheotherhand,increasingthelengthoftheincubationperiodincreasesdiseaseburdenif△b>0and△v>0.Furthermore,itisshownthataddingtimedelaytothecorrespondingautonomousmodelwithstandardincidence(consideredin[2])doesnotalterthequalitativedynamicsoftheautonomoussystem(withrespecttotheeliminationorpersistenceofthedisease).

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简介：Consideringtheefectsofosmoticpressure,elasticbending,Maxwellpressure,surfacetension,aswellasfexo-electricanddielectricpropertiesofphospholipidmembrane,theshapeequationforspherevesicleinalternation(AC)electricfeldisderivedbasedontheliquidcrystalmodelbyminimizingthefreeenergyduetocoupledmechanicalandACelectricalfelds.Besidestheefectofelasticbending,theinfuenceofosmoticpressureandsurfacetensiononthefrequencydependentbehaviorofvesiclemembraneinACelectricfeldisalsodiscussed.Ourtheoreticalresultsformembranedeformationareconsistentwithcorrespondingexperiments.Thepresentmodelprovidesthepossibilitytofurtherdisclosethefrequency-dependedbehaviorofbiologicalcellsinthecoupledACelectricanddiferentmechanicalfelds.

简介：Thispaperconsidersaconsumptionandinvestmentdecisionproblemwithahigherinterestrateforborrowingaswellasthedividendrate.WealthisdividedintoarisklessassetandriskyassetwithlogrithmicErownianmotionpricefluctuations.Thestochasticcontrolproblemofmaximizatingexpectedutilityfromterminalwealthandconsumptionisstudied.Equivalentconditionsforoptimalityareobtained.Byusingdualitymethods,theexistenceofoptimalportfolioconsumptionisproved,andtheexplicitsolutionsleadingtofeedbackformulaearederivedfordeteministiccoefficients.

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简介：Carbonnanotubemacro-filmsaretwo-dimensionalfilmswithmicrometerthicknessandcentimeterbycentimeterin-planedimension.Thesecarbonnanotubemacroscopicassemblieshaveattractedsignificantattentionfromthematerialandmechanicscommunitiesrecentlybecausetheycanbeeasilyhandledandtailoredtomeetspecificengineeringneeds.Thispaperreportstheexperimentalmethodsonthepreparationandcharacterizationofsingle-walledcarbonnanotubemacro-films,andastatisticalmechanicsmodelon...

简介：Amodelwasestablishedtopredictcondensationheattransfercoefficientonhorizontalrectangularfinnedtube.Drop-Offzoneatthetubebottomwasconsideredanddetermined,theknownHonda(andOwen)expressionofretentionanglewasalsomodifiedasaresultofconsideringdrop-offzone.Heatfluxonfintipsintheunfloodedregion,finflanks,finspacingsandfintipsinthefloodedregionwereanalyzedrespectively.COndensationonfintipsinemphasizedbyconsideringthevariationoffilmthicknessalongcircumferenceaswellashorizontally.FInefficiencywasconsideredincalculation.Thepredictionresultswerecomparedwithseveralresearchers'experimentaldataforthreekindsofworkingfluidsonsevendifferenttubegeometriesandforvarioustemperaturedifferences,Thesedataunderabout60testconditionswerepredictedwithdiscrepancyof±10%.PredictionbythepresentmodelforsteamandR-113condensationwerecomparedwithpreviousmodels.

简介：我们在场为行人的模拟的一个导出的基于格子的模型流动。在行人之中的相互作用在某个邻居以内被看作力量的结果。不同于社会力量模型，作为在牛顿的物理，这里的力量与距离的平方的逆成正比。尽管有邻居和内在的格子的观点，这个模型不同于存在细胞的自动机(CA)当模特儿因为行人被当作个人。Bresenham为线rastering的算法在步计算被使用。

简介：ConstructingareasonablereactionkineticmodelforCr-containingwasteincinerationisofhighsignificancetostudytheeffectofvariousfactors,suchastemperature,Cl,onitshexavalentchromiumcompounds.Inthispaper,aprimaryCr/H/Air/ClreactionkineticmodelisbuiltandstudiedbyGaussian03codewithquantumchemistrytheory.Numericalresultsshowthattherearetwooverallreactionsinthemodel,eachofthetwooverallreactionsconsistsoftheirrespectivetwoelementaryreactions.Sothetwooverallreactionsshouldbeomittedfromthemodel.Instead,thefourelementaryreactionsshouldbeaddedintheCr/H/Air/Clreactionkineticmodel.Theactivationenergiesofthefourelementaryreactionsarealsocalculated.

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：由直接diagonalizing脱氧核糖核酸酸(DNA)的梯子模型的Hamiltonian分子，状态的密度被获得。DNA作为一个售票员表现，这被发现什么时候内部链跳跃比小两次intrachain不那样，DNA作为一个半导体表现。

简介：Numericalanalysesofthecoldturbulentflowinmodelcombustionchambersweremadebyusingκ.εturbulentmodel.ThehybriddifferenceschemeandSNIPmethodwereemployed.Numericalsolutionsforretouchmentlengthandvelocitydistributionswereobtainedintherecirculatingzoneofthecombustionchambers.Thecalculationresultswereinfairlygoodagreementwiththereportedexperimentaldata.Theworkpresentedinthispaperwasabasicpartofthecalculationmodelofsudden-enlargedcombustionchambers.

简介：有单音的补品连接功能的单个索引的模型被调查。第一，连接工作，这被显示出h(·)能被一个图形的方法看。也就是说有水平轴上的适合的反应的阴谋；垂直的轴上的观察y能被用来设想连接功能。甚至当连接功能不是单音的补品时，这条图形的途径也是适用的，这被指出。注意那许多存在非参量的光滑的ers能也被用来估计h(·)。因此，经由与惩罚功能最大化协变性功能的连接功能的我花键近似在现在的工作被调查。标准的一致性被构造。小模拟被执行证实在纸建议的途径的效率。

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

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