简介：NewtransmissionlineequationsarededucedapplyingMaxwell^,sequationsinthispaper.Theconditionsoftheclassicaltransmissionlineequationshavebeendiscussed,whichisimportanttosolvetheEMproblemsinhighfrequencycase.

简介：Althoughstimulusfrequencyotoacousticemissions(SFOAEs)havebeenusedasanon-invasivemeasureofcochlearmechanics,clinicalandexperimentalapplicationofSFOAEshasbeenlimitedbydifficultiesinaccuratelyderivingquantitativeinformationfromsoundpressuremeasuredintheearcanal.Inthisstudy,anovelsignalprocessingmethodformulticomponentanalysis(MCA)wasusedtomeasuretheamplitudeanddelayoftheSFOAE.Thisreportshowsthedelay-frequencydistributionoftheSFOAEmeasuredfromthehumanear.AlowlevelacousticalsuppressorneartheprobetonesignificantlysuppressedtheSFOAE,stronglyindicatingthattheSFOAEwasgeneratedatcharacteristicfrequencylocations.Informationderivedfromthismethodmayrevealmoredetailsofcochlearmechanicsinthehumanear.

简介：Ahybridmodelisusedtosimulatethecharacteristicsofacollisionalsheathinacapacitivelycoupledplasma(CCP)drivenbyadualfrequencysourceincludingaRFandapulsedcurrentsourceappliedtothesameelectrode.Thehybridmodelincludesafluidmodelusedtosimulatethecharacteristicsofthecollisionalsheath,andaMonte-Carlo(MC)methodtoobtainbothionenergyandionangulardistributions(IEDsandIADs)impingingonthesubstrate.Theeffectsofthelowfrequencyofthepulsedsourceandthegaspressureonthecharacteristicsofthesheath,aswellastheIEDsandIADs,arestudied.Theresultsshowthattheratioofpulse/RFfrequencyandthegaspressurearecrucialforthecharacteristicsofthesheathandtheIEDs.TheIADsaresignificantlymoresensitivetothegaspressure.

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：Octave-spanningfrequencycombgenerationinmicroresonatorsispromising,butstrongspectrallossescausedbymaterialabsorptionandmodecouplingbetweentwopolarizationsormodefamiliescanbedetrimental.Weexaminetheimpactofthespectrallossandproposerobustcombgenerationwithalossofeven300dB/cm.CavitynonlineardynamicsshowthataphasechangeassociatedwithspectrallossescanfacilitatephasematchingandKerrcombgeneration.Giventhisuniquecapability,weproposeanovelarchitectureofon-chipspectroscopysystems.

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简介：在低频率改正测量头相关的转移功能(HRTF)的一个方法被建议。由在低频率从球形的头模型分析HRTF，在400Hz的频率下面，HRTF的大小是将近不变的，阶段为远、近的地两个都是频率的线性功能，这被证明。因此，如果在400Hz上面的HRTF被实验精确地测量，它能由理论模型在低频率改正HRTF。计算和主观实验的结果证明建议方法的可行性。

简介：Thephaseandfrequencylockingofmicrowave,millimeterwavepowercombiningwereanalysedandsummarizedinanall-roundway.Themaster/slavephaselockingofcavityoscillators,thepeerphaselockingofmutuallycoupledoscillators,andthepeerphaselockingofring-connectedmultipleoscillatorswereinvestigated.Theresultsofnumericalcalculations,andtherelationsofphasetophaselockingmodelandoscillatorparametersweregiven.Andthecavityandspacepowercombiningaspectsformicrowaveandmillimeterwavewerepresented.

简介：Itisidentifiedthatbarelypassingelectronsarethedriveofthee-Gshbones,ratherthanthebarelytrappedelectronsatlowfrequency.Thefrequencyjumpine-Bshboneexperimentsisreproducedandanalyzed.Itisfoundthatthee-Bshbonefrequencyincreaseswiththehotelectronenergy,whichisconsistentwiththeexperiments.Thegrowthrateofthemode(m=2,n=2)isgreaterthanthatofthemode(m=1,n=1).

简介：Themethodformeasuringthestrainofanobjectusinganopticalfiberandafrequencymodulation(FM)coupledcaritysemiconductorlaserispro-posed.ThismethodusesthecoherentFMheterodyneprincipleoftheMichelsonin-terferometerandcanavoidtheπ/2nonreciprocalphasebiasandphaseshiftingproblemexistingingeneralfiberopticinterferentialsensors,themaximumdetec-tionrangeislimitedbythecoherentlengthofthesemiconductorlaseranditsrela-tivefactor.

简介：Soundisoneoftheinformationcarriersoftenusedinanimalcommunication.Soundproducedbyani-malsisusefulnotonlyinintraspecificcommunication,butalsoinalarmoraggression.Threebasicproblemsinhearingshouldberesolvedi.e.frequencyselectivity,patternrecognitionandsounddirection.Withintracellularrecordingandsinglecellstainingtechniques,frequencyselectivityofprimaryauditoryneuronsinthebushcrickethasbeenstudied.Eachneuronhasitscharacteristicbestfrequency(BF)andtuningcurveinresponsetosound.Thecentralprojectionsoftheiraxonsintheprothoracicganglionareunilateral,non-transsegmentalandofsomecorrespondingrelationtotheirBFs.Neuralmechanismsforfrequencyanalysisinspecies-specificsongrecognitionofthebushcricketarediscussed.

简介：ThePMD-inducedpulsebroadeningmaycausethedegradationofreceiversensitivityandhasnegativeeffectsonthepowerspectrumofreceivedsignals.TheexpressionsofPMD-inducedpulsebroadeningeffectsonreceiversensitivityarederivedbasedontheconceptofmeansquarepulsewidth.TheeffectsofPMDonthespectrumofreceivedpowerareanalyzedindetail.Finally,theschemeisdiscussedwithwhichthepowerofacertainfrequencycomponentisextractedasafeedbackcontrolsignalinaPMDcompensationsystem.

简介：Inrecentyears,theredtideeruptedfrequently,andcausedagreateconomicloss.Atpresent,mostliteraturesemphasizetheacademicresearchonthegrowthmechanismofredtidealga.Inordertofindoutthecharactersofredtideindetailandimprovetheprecisionofforecast,thispapergivessomenewapproachestodealingwiththeredtide.Bytheextremevalues,wedealwiththeredtidefrequencyanalysisandgettheestimationofT-timesredtidelevelU(T),whichistheleveloncetheconsistenceofredtidealgaexceedsontheaverageinaperiodofTtimes.

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简介：Toimproveframesynchronizationprecision,aschemenamedtrainingsymbolcorrelation(TSC)ispresentedfororthogonalfrequencydivisionmultiplexing(OFDM)system.BasedonthesolutionfromSchmidlandCox,atimingmetricrelatedtoTSCschemeisputforwardandexamined.Thespecificmethodtoselectathresholdvalueprovidesmoreprecisedetectionresults,whichcanbeshownbyperformancecomparisonbetweenthetwoschemesthroughMonteCarlosimulation.TakingIEEE802.11aWLANstandardasanexample,theproposedapproachissuperiortothemostpopularSchmidlschemeintermsofBER.

简介：Theultra-low-frequency(ULF)electromagneticemissionisrecentlyrecognizedasoneofthemostpromisingcandidatesforshort-termearthquake(EQ)prediction.ThispaperreviewspreviousconvincingevidenceonthepresenceofULFemissionsbeforethreemajorEQs.Then,wepresentfurtherstatisticalstudyontheULFoccurrence,ournetworksofULFmonitoringindifferentspatialscalesinJapanandfinallywepresentseveralsignalprocessingstoidentifytheseismogenicemissionsbyshowinglatestresultsforrecentlargeEQs.

简介：低频率(2.72-3.70Hz)在在更高吸收的力量的100mTorr的松驰摆动从主要分泌物房间和圆周的变化时间的光排放被观察。我们与平行连接用槽阻抗的一个电磁的模型解释低频率摆动变化外部电容，包括匹配的网络联合了到系统的电路分析。模型结果在对试验性的观察的一般同意，并且在匹配的条件上显示许多行为依赖者。

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简介：Theattempttorepresentasignalsimultaneouslyintimeandfrequencydomainsisfullofchallenges.TherecentlyproposedadaptiveFourierdecomposition(AFD)offersapracticalapproachtosolvethisproblem.ThispaperpresentstheprinciplesoftheAFDbasedtime-frequencyanalysisinthreeaspects:instantaneousfrequencyanalysis,frequencyspectrumanalysis,andthespectrogramanalysis.AnexperimentisconductedandcomparedwiththeFouriertransforminconvergencerateandshort-timeFouriertransformintime-frequencydistribution.TheproposedapproachperformsbetterthanboththeFouriertransformandshort-timeFouriertransform.