简介：Accordingtothecharacteristicofthesensorinertia,thedynamicpredictiontoimprovethesystemdynamicprecisionispresentedinthispaper.Withtherecurrencecalculationoftimeconstantofthesensor,thesystemdynamicprecisionisgreatlyimproved.Theexampleusingthismethodisgiven.

简介：Wedemonstrateanelectric-controlledterahertz(THz)modulatorwhichcanbeusedtorealizeamplitudemodulationofterahertzwaveswithslightphoto-doping.TheTHzpulsetransmissionwasefficientlymodulatedbyelectricallycontrollingthemonolayersilicon-baseddevice.Themodulationdepthreached100%almostwhentheappliedvoltagewas7Vatanexternallaserintensityof0.6W/cm2.Thesaturationvoltagereducedwiththeincreaseofthephoto-excitedintensity.InaTHzcontinuouswave(CW)system,asignificantfallinbothTHztransmissionandreflectionwasalsoobservedwiththeincreaseofappliedvoltage.ThisreductionintheTHztransmissionandreflectionwasinducedbytheabsorptionforelectroninjection.Theresultsshowthatahigh-efficiencyandhighmodulationdepthbroadbandelectric-controlledterahertzmodulatorinapureSistructurehasbeenrealized.

简介：在打印技术的不断创新发展之下，打印机能够打印高质量的照片已经得到了广大专业人士的肯定。不过对于用户来说，总是希望自己的照片能够得到更完美的输出。越是对输出品质极端挑剔的专业用户，这种要求越是强烈。最近，爱普生推出了体现打印技术最新高科技成果的EPSONStylusPhotoR800照片打印机。

简介：Theprincipleofthetwocarrierscontributingtocarrythepixelsignalchargesisfirstlypresented,andthenthebipolarjunctionphotogatetransistor(BJPT)withhighperformanceisproposedfortheCMOSimagesensor.Thenumericalanalyticalmodelofthephoto-chargetransferforthebipolarjunctionphotogateisestablishedindetail.Somenumericalsimulationsareobtainedunder0.6μmCMOSprocess,whichshowthatitsreadoutrateincreasesexponentiallywiththeincreaseofthephoto-chargeatappliedvoltage.

简介：ＤｙｎａｍｉｃＣｕｒｒｅｎｔＳｈａｒｉｎｇｉｎＰａｒａｌｅｌｉｎｇＰｏｗｅｒＭＯＳＦＥＴ①ＷＡＮＧＢａｏｃｈｅｎｇ，ＷＵＷｅｉｙａｎｇ，ＺＨＡＮＧＣｈｕｎｊｉａｎｇ（ＹａｎｓｈａｎＵｎｉｖｅｒｓｉｔｙ，Ｑｉｎｈｕａｎｇｄａｏ０６６００４，ＣＨＮ）Ａｂ...

简介：遮蔽下载服务，作为脱机下载请求的内容并且在云存储保留它直到用户们检索它的新应用，最近成为了在中国吸引百万个用户的一个趋势。在面临在下载请求和存储资源的限制的生长之间的窘境时，云服务者不得不设计一个有效资源分配计划提高存储的利用以及满足象一短下载时间一样的用户需要。当用户搅拌机行为被看作一个Markov链过程时，下载速度的合适的分配能优化存储资源利用，这被发现。因此，二动态资源分配策划包括切换的速度(SS)增加的计划和速度(SI)策划被建议。理论分析和模拟结果证明我们的计划能有效地减少存储资源的消费并且为好用户经验使下载时间足够短。

简介：Tomeetthechallengeofimplementingrapidlyadvanced,time-consumingmedicalimageprocessingalgorithms,itisnecessarytodevelopamedicalimageprocessingtechnologytoprocessa2Dor3Dmedicalimagedynamicallyontheweb.Butinapremiersystem,onlystaticimageprocessingcanbeprovidedwiththelimitationofwebtechnology.ThedevelopmentofJavaandCORBA(commonobjectrequestbrokerarchitecture)overcomestheshortcomingofthewebstaticapplicationandmakesthedynamicprocessingofmedicalimagesonthewebavailable.Todevelopanopensolutionofdistributedcomputing,weintegratetheJava,andwebwiththeCORBAandpresentaweb-basedmedicalimagedynamicprocessingmethed,whichadoptsJavatechnologyasthelanguagetoprogramapplicationandcomponentsofthewebandutiliestheCORBAarchitecturetocopewithheterogeneouspropertyofacomplexdistributedsystem.Themethodalsoprovidesaplatform-independent,transparentprocessingarchitecturetoimplementtheadvancedimageroutinesandenableuserstoaccesslargedatasetandresourcesaccordingtotherequirementsofmedicalapplications.TheexperimentinthispapershowsthatthemedicalimagedynamicprocessingmethodimplementedonthewebbyusingJavaandtheCORBAisfeasible.

简介：Theproblemofrecognizingnaturalscenes,suchaswater,smoke,fire,wind-blownvegetationandaflockofflyingbirds,isconsidered.Thesescenesexhibitthecharacteristicdynamicpattern,buthavestochasticextent.Theyarereferredtoasdynamictexture(DT).Inreality,thediversityofDTsondifferentviewpointsandscalesareverycommon,whichalsobringgreatdifficultytorecognizeDTs.Inthepreviousstudies,duetonoconsideringofthedeformableandtransientnatureofelementsinDT,themotionestimationmethodisbasedonbrightnessconstancyassumption,whichseeminappropriateforaggregateandcomplexmotions.Anovelmotionmodelbasedonrelativemotionintheneighborhoodoftwo-dimensionalmotionfieldsisproposed.Theestimationofnon-rigidmotionofDTsisbasedonthecontinuityequation,andthenthelocalvectordifference(LVD)isproposedtocharacterizeDTlocalrelativemotion.SpatiotemporalstatisticsoftheLVDsisusedastherepresentationofDTsequences.ExcellentperformancesofclassifyingallDTsinUCLAdatabasedemonstratethecapabilityoftheproposedmethodindescribingDT.

简介：Unmannedaerialvehicles(UAVs)mayplayanimportantroleindatacollectionandoffloadinginvastareasdeployingwirelesssensornetworks,andtheUAV’sactionstrategyhasavitalinfluenceonachievingapplicabilityandcomputationalcomplexity.Dynamicprogramming(DP)hasagoodapplicationinthepathplanningofUAV,butthereareproblemsintheapplicabilityofspecialterrainenvironmentandthecomplexityofthealgorithm.BasedontheanalysisofDP,thispaperproposesahierarchicaldirectionalDP(DDP)algorithmbasedondirectiondeterminationandhierarchicalmodel.WecompareourmethodswithQ-learningandDPalgorithmbyexperiments,andtheresultsshowthatourmethodcanimprovetheterrainapplicability,meanwhilegreatlyreducethecomputationalcomplexity.

简介：

简介：AkindofDynamicFullBandwidthUtilized(DFBU)allocationalgorithmisintroduced.Thisalgorithmallowsasinglelinktousebandwidthfarbeyonditsfairsharebandwidthinamulti-servicepackettransportingsystem.Threeimportantparametersastheboundonmaximumandminimumbandwidth,themaximumpacketdelayandtheminimumbandwidthutilizationarediscussedandanalyzed.ResultsofexperimentsshowthattheDFBU-algorithmiscapableofmakingasinglelinkinthesystemtouseallthesparebandwidth(uptofull-bandwidth)whiletheperformanceoffairnessandQoSrequirementisstillguaranteed.

简介：Aimingatthetraditionalpassivedeceptionmodels,thispaperconstructsaDecoyPlatformbasedonIntelligentAgent(DPIA)torealizedynamicdefense.Thepaperexploresanewdynamicdefensemodelbasedonactivedeception,introducesitsarchitecture,andexpatiatesoncommunicationmethodsandsecurityguaranteeininformationtransference.SimulationresultsshowthattheDPIAcanattracthackeragilityandactivity,leadabnormaltrafficintoit,distributealargenumberofattackdata,andensurerealnetworksecurity.

简介：Astate-dependentroutingalgorithmbasedontheneuralnetworkmodel,whichtakesadvantageofotherdynamicroutingalgorithmforcircuit-switchednetwork,isgivenin[1].ButtheAlgorthmin[1]isacentralizedcontrolmodelwithcomplexO(N^7),therefore,isdiffculttorealizebyhardware.Asimplifiedalgorithmisputforwardinthispaper,inwhichroutingcanbecontrolleddecentralizekly,anditscomplexityisreducedtoO(10N^3).Computersimulationsaremadeinafullyconnectedtestnetworkwitheightnodes.TheresultsshowthatthecentralizedcontrolmodelhasveryeffectiveperformancethatcanmatchRTNR,andthecentralizedcontrolmodelisnotasgoodasthecentralizedonebutbetterthanDAR-1.

简介：TheAndroidplatformisthemostpopularmobileoperatingsystem.WiththeincreaseofthenumberofAndroidusers,alotofsecurityissueshaveoccurred.InordertodetectthemaliciousbehaviorsfortheinstalledAndroidApps,inthispaper,weproposeanAndroidmalwaredetectingschemebyintegratingstaticanddynamicanalysismethods.WeuseAndroguardandDroidBoxtoextractthefeatures,andthenremovetheirrelevantfeatures.Thenweemploythesupportvectormachine(SVM)toclassifytheAndroidmalwareandbenignware.Fromtheresultofourproposedscheme,theproposedintegratedstaticanddynamicanalysisschemewithSVMcaneffectivelydetecttheAndroidmalware.

简介：Toestablishanefficientinter-satellitelink(ISL)inanLEOnetwork,theeffectofgeometriccharacteristicsofISLontheISLsandthedevicesontheLEOsatelliteshouldbeexamined.BecauseofthecontinuousmovementoftheLEOsatellite,thetime-varyingbehavioursoftheISL'sgeometriccharactersisticscontinuouslychangewiththechangesofthesatellite'spositionontheorbit.ThesedynamicgeometriccharacteristicsoftheISLsareimportantforISL'sperformanceanalyzingandthedesignofthedevicesontheLEOsatellite.ThispaperdescribesdynamicgeometriccharacteristicsofISL,analyzestheimpactoftheseregulationsonthetrackingsystemofthesatellite'santennaandthepoweradjustingsystemofthesatellite'stransmitter,withtheIridiumsystemasanexample.

简介：

简介：Vehiclepositioningwiththeglobalnavigationsatellitesystem(GNSS)inurbanenvironmentsfacestwoproblemswhichareattenuationanddynamic.FortraditionalGNSSreceivershardlyabletotrackdynamicweaksignals,thecouplingbetweenallvisiblesatellitesignalsisignoredintheabsenceofnavigationstatefeedback,andthermalnoiseerroranddynamicstressthresholdarecontradictoryduetonon-coherentdiscriminators.Thevectordelay/frequencylockedloop(VDFLL)withnavigationstatefeedbackandthejointvectortrackingloop(JVTL)withcoherentdiscriminatorwhichisasynchronizationparametertrackingloopbasedonmaximumlikelihoodestimation(MLE)areproposedtoimprovethetrackingsensitivityofGNSSreceiverindynamicweaksignalenvironments.Ajointvectorpositiontrackingloop(JVPTL)directlytrackinguserpositionandvelocityisproposedtofurtherimprovetrackingsensitivity.ThecoherentnavigationparameterdiscriminatorofJVPTL,beingabletoeasethecontradictionbetweenthermalnoiseerroranddynamicstressthreshold,isbasedonMLEaccordingtothenavigationparameterbasedlinearmodelofreceivedbasebandsignals.SimulationresultsshowthatJVPTL,whichcombinestheadvantagesofbothVDFLLandJVTL,performsbetterthanbothVDFLLandJVTLindynamicweaksignalenvironments.

简介：Inthisstudy,aMulti-LayerBPneuralnetwork(MLBP)withdynamicthresholdsisemployedtobuildaclassifiermodel.Astothedesignoftheneuralnetworkstructure,theoreticalguidanceandplentifulexperimentsarecombinedtooptimizethehiddenlayers'parameterswhichincludethenumberofhiddenlayersandtheirnodenumbers.Theclassifierwithdynamicthresholdsisusedtostandardizetheoutputforthefirsttime,anditimprovestherobustnessofthemodeltoahighlevel.Finally,theclassifierisappliedtoforecastboxofficerevenueofamoviebeforeitstheatricalrelease.ThecomparisonresultswiththeMLPmethodshowthattheMLBPclassifiermodelachievesmoresatisfactoryresults,anditismorereliableandeffectivetosolvetheproblem.

简介：

简介：Aimingathandlingcomplicatedmaneuversorotherunpredictedemergenciesforhypersonicglidevehicletracking,threecoupleddynamicmodelsofstateestimationbasedontheprioriinformationbetweenguidancevariablesandaerodynamicsarepresented.Firstly,theaerodynamicaccelerationactingonthetargetisanalyzedtorevealtheessenceofthetarget’smotion.Thenthreecoupledstructuresformodelingaerodynamicparametersaredevelopedbydifferentideas:thespiralmodelwithaharmonicoscillator,thebankmodelwithtrigonometricfunctionsofthebankangleandtheguidemodelwiththechangingruleofguidancevariables.Meanwhile,thecomparisondiscussionisconcludedtoshowthenoveltyandadvantageofthesemodels.Finally,aperformanceassessmentindifferentsimulationcasesispresentedanddetailedanalysisisrevealed.Theresultsshowthattheproposedmodelsperformexcellentproperties.Moreover,theguidemodelproducesthebesttrackingperformanceandthebankmodelshowsthesecond;however,thespiralmodeldoesnotoutperformthemaneuveringreentryvehicle(MaRV)modelmarkedly.