简介：

简介：这份报纸在其解决方案polynomially至多成长的切换的政体下面考虑一个给定的中立功能的系统。系统能容忍如果系统服从于另一环境噪音，保存多项式生长的Brownian噪音和颜色噪音吗？答案是积极的。这份报纸一起显示那环境噪音和政体切换工作让其答案polynomially至多成长的原来的中立微分系统成为答案的一个新中立功能的微分系统将仍然保存多项式生长。这显示这个中立功能的微分系统能容忍没有失去多项式生长的性质的小噪音，它暗示坚韧性。这份报纸也证明标准对作为功能的系统的一种特殊情况的中立延期系统合适。最后，二个例子被给说明主要理论。

简介：InterferogramnoisereductionisaveryimportantprocessingstepinInterferometricSyntheticApertureRadar(InSAR)technique.Themostdifficultyforthisstepistoremovethenoisesandpreservethefringessimultaneously.Tosolvethedilemma,anewinterferogramnoisereductionalgorithmbasedontheMaximumAPosteriori(MAP)estimateisintroducedinthispaper.ThealgorithmissolvedundertheTotalGeneralizedVariation(TGV)minimizationassumption,whichexploitsthephasecharacteristicsuptothesecondorderdifferentiation.Theidealnoise-freephaseconsistingofpiecewisesmoothareasisinvolvedinthisassumption,whichiscoincidentwiththenaturalterrain.Inordertoovercomethephasewraparoundeffect,complexplanefilterisutilizedinthisalgorithm.Thesimulationandrealdataexperimentsshowthealgorithmcanreducethenoiseseffectivelyandmeanwhilepreservetheinterferogramfringesverywell.

简介：为了在焊接缺点有效地减少噪音，想象并且保存琐事信息，基于nonsubsampledcontourlet变换(NSCT)焊接缺点图象的一个噪音减小方法和各向异性的散开被建议。第一，焊接缺点图象的X光检查被NSCT分解。然后全部的变化(电视)模型和Catte_PM模型分别地被用于获得的低通行证的部件和通带部件。最后，降噪的图象被反的NSCT综合。试验性的结果显示出那，与有电视散开和适应对比散开的小浪阀值收缩的混合方法相比，建议方法在主观视觉效果的方面有大改进，山峰signal-to-noise比率(PSNR)和吝啬平方的错误(MSE)。噪音更有效地被压制，琐事信息在图象更好被保存。

简介：我们由分析推理和随机的模拟在一个单个阀值的传感器系统在随机的回声上调查alpha马厩噪音的效果。随机的回声在alpha马厩噪音环境发生在阀值系统，这被显示出，但是反响的效果变得作为alpha马厩索引减少或alpha马厩分发增加的偏斜度参数变弱。特别地，为Cauchy噪音，在最佳的噪音偏差参数，信号振幅和阀值之中的一种非线性的关系是为输出signal-to-noise比率使用极端值条件获得并且说明的经分解。在这通讯介绍的结果应该在non-Gaussian在信号察觉和图象恢复有申请吵闹的环境。

简介：Inholographicencryption,doublerandom-phaseencodingintheFresneldomain(DRPEiFD)isaprevalentencryptionmethodbecauseitislenslessandsecure.However,noisesbringadverseeffectsduringdecryption.Inthisletter,weintroducequick-response(QR)codingduringencryptiontoresistnoises.WetransformtheoriginalinformationintoaQRcodeandthenencryptthecodeasahologramthroughDRPEiFD.Toretrievetheinput,wedecryptthehologramintheoppositemannertotheencryptionandsubsequentlyobtainaQRcodewithnoises.Byscanningthiscodewithproperapplicationsinsmartphones,wecanobtainanoise-freeretrieval.Numericalexperimentsandimagesscannedbyasmartphoneareshowntovalidateourproposedmethod.

简介：SmallRNAhasrecentlydrawnmoreandmoreattention.Inthispaper,weconcentrateontheinfluenceofnoisesongenenetworkregulatedbysmallRNAusingchemicalLangevinequation.Itshowsthatthenoisecancauseoscillationwhentheoscillatedoesnotoccurinthecorrespondingdeterministicsystem.Thecoherenceofthenoiseinducedoscillationreachesamaximumforanoptimalintensityofnoise,andthecoherenceresonanceappearsaccordingly.Thefindingsimplyprobablyomnipresentimportanceofnoiseinthefunctioningprocessoflivingorganism.

简介：Thediffusionbehaviordrivenbyboundednoiseundertheinfluenceofacoupledharmonicpotentialisinvestigatedinatwo-dimensionalcoupled-dampedmodel.WiththehelpoftheLaplaceanalysisweobtainexactdescriptionsforaparticle’stwo-timedynamicswhichissubjectedtoacoupledharmonicpotentialandacoupleddamping.Thetimelagisusedtodescribethevelocityautocorrelationfunctionandmeansquaredisplacementofthediffusingparticle.Thediffusionbehaviorforthetimelagisalsodiscussedwithrespecttothecoupleditemsandtheamplitudeofboundednoise.

简介：Anintegratedmethodbasedonopticalanddigitalimageprocessingispresentedtosuppressspeckleindigitalholography.Aspatiallightmodulatorisadoptedtointroducerandomphasestotheilluminatingbeam.Multiplehologramsarereconstructedandsuperimposed,andtheintensityisaveragedtosmooththenoise.Theadaptivealgorithmbasedonthenonlocalmeansisdesignedtofurthersuppressthespeckle.Thepresentedmethodiscomparedwithothermethods.Theexperimentalresultsshowthatspecklereductionisimproved,andtheproposedmethodiseffectiveandfeasible.

简介：Withrapiddevelopmentcommunicationsystem,highsignaltonoiseratio(SNR)systemisrequired.Inhighfrequencybandwidth,highloss,lowQinductorsandhighnoisefigureisasignificantchallengewithon-chipmonolithicmicrowaveintegratedcircuits(MMICs).Toovercomethisproblem,highQ,lowlosstransmissionlinecharacteristicswasanalyzed.Comparedwiththesameinductorvalueofthelumpedcomponentandthetransmissionline,ithasahigherQvalueandlowerlossperformanceinhighfrequency,anda2-stagecommon-sourcelownoiseamplifier(LNA)waspresented,whichemployssourceinductorfeedbacktechnologyandhighQlowlosstransmissionlinematchingnetworktechniquewithover17.6dBsmallsignalgainand1.1dBnoisefigurein15GHz–18GHz.TheLNAwasfabricatedbyWINsemiconductorscompany0.15μmgalliumarsenide(GaAs)Phighelectronmobilitytransistor(P-HEMT)process.Thetotalcurrentis15mA,whiletheDCpowerconsumptionisonly45mW.

简介：Theextinctionphenomenoninducedbymultiplicativenon-GaussianL′evynoiseinatumorgrowthmodelwithimmuneresponseisdiscussed.Undertheinfluenceofthestochasticimmunerate,themodelisanalyzedintermsofastochasticdifferentialequationwithmultiplicativenoise.BymeansofthetheoryoftheinfinitesimalgeneratorofHuntprocesses,theescapeprobability,whichisusedtomeasurethenoise-inducedextinctionprobabilityoftumorcells,isexplicitlyexpressedasafunctionofinitialtumorcelldensity,stabilityindexandnoiseintensity.Basedonthenumericalcalculations,itisfoundthatfordifferentinitialdensitiesoftumorcells,noiseparametersplayoppositerolesontheescapeprobability.Theoptimallyselectedvaluesofthemultiplicativenoiseintensityandthestabilityindexarefoundtomaximizetheescapeprobability.

简介：Moststudiesofseismicnoisecross-correlation(NCC)havefocusedonregional/continentalscaleimagingusingempiricalsurface-waveGreen’sfunctionsextractedfromprimary(0.05–0.08Hz)andsecondary(0.1–0.16Hz)microseisms.Inthiswork,wepresenttheNCCresultsathigherfrequencies([0.5Hz)from6monthsseismicnoiserecordedbyalocalarray(*4kmaperture)deployedalongtheCalicofaultintheMojaveDesert,California.BothfastandslowpropagatingwavesareobservedfromtheNCCrecord-sections.WecomparetheNCCsfromsensorpairsthatshareacommonsensorwiththerecordsofaboreholeshotlocatedveryclosetothiscommonsensor.Theresultshowsagoodmatchoftheslowsurface-wavearrivals,indicatingthattheNCCmethodisabletorecoverunbiasedsurface-waveGreen’sfunctionsatlocalscales.Thestrongbody-waveNCCcomponentiscausedbythePwavesgeneratedoffshoreCalifornia.AlongaSW–NEprofileacrossthefault,weobserveapparentP-wavearrivalsandtheirreflections,whichcanbeexplainedbyalow-velocityzone(LVZ)alongtheCalicofault.WecalculatetheLVZwidthtobe*2.3km,andtheP-wavevelocityreductionwithintheLVZtobe*35%.TheseestimatesareconsistentwithotherevidenceforarelativelywideLVZalongtheCalicofault.

简介：ObjectiveTostudycharacteristicsofhearinglossafterexposuretomoderatenoiseexposureinC57BL/6Jmice.MethodsMaleC57BL/6Jmicewithnormalhearingatageof5-6weekswerechosenforthisstudy.Themicewererandomlyselectedtobestudiedimmediatelyafterexposure(GroupP0),or1day(GroupP1),3days(GroupP3),7days(GroupP7)or14days(P14)afterexposure.Theirbeforeexposureconditionservedasthenormalcontrol.Allmicewereexposedtoabroad-bandwhitenoiseat100dBSPLfor2hours,ABRthresholdswereusedtoestimatehearingstatusateachtimepoint.ResultsABRthresholdelevationwasseenateverytestedfrequencyatP0(P<0.01).Elevationathigh-frequencies(16kHzand32kHz)wasgreaterthanatlowerfrequencies(4kHzand8kHz,P<0.05).FromP1toP14,ABRthresholdscontinuouslyimproved,andtherewasnosignificantdifferencebetweenP14andbeforeexposure(P>0.05).ConclusionThereisafrequencyspecificresponseto100dBSPLbroad-bandwhitenoiseinC57BL/6Jmice,withthehigh-frequencybeingmoresusceptible.HearinglossinducedbymoderatenoiseexposureappearsreversibleinC57BL/6Jmice.

简介：Inhighlypopulatedurbancenters,traditionalseismicsurveysourcescannolongerbeproperlyappliedduetorestrictionsinmoderncivilianlifestyles.Theambientvibrationnoise,includingbothmicroseismsandmicrotremor,thougharegenerallyweakbutavailableanywhereandanytime,canbeanidealsupplementarysourceforconductingseismicsurveysforengineeringseismologyandearthquakeengineering.Thisisfundamentallysupportedbyadvanceddigitalsignalprocessingtechniquesforeffectivelyextractingtheusefulinformationoutfromthenoise.Thus,itcanbeessentiallyregardedasapassiveseismicmethod.Inthispaperwefirstmakeabriefsurveyoftheambientvibrationnoise,followedbyaquicksummaryofdigitalsignalprocessingforpassiveseismicsurveys.ThentheapplicationsofambientnoiseinengineeringseismologyandearthquakeengineeringforurbansettingsareillustratedwithexamplesfromBeijingmetropolitanarea.Forengineeringseismologytheexampleistheassessmentofsiteeffectinalargeareaviamicrotremorobservations.Forearthquakeengineeringtheexampleisforstructuralcharacterizationofatypicalreinforcedconcretehigh-risebuildingusingbackgroundvibrationnoise.Byshowingtheseexampleswearguethattheambientnoisecanbetreatedasanewsourcethatiseconomical,practical,andparticularlyvaluabletoengineeringseismologyandearthquakeengineeringprojectsforseismichazardmitigationinurbanareas.