简介：Inthispaper,anextendedKendallmodelforthepriorityschedulinginput-linegroupoutputwithmulti-channelinAsynchronousTransferMode(ATM)exchangesystemisproposedandthenthemeanmethodisusedtomodelmathematicallythenon-typicalnon-anticipativePRiorityservice(PR)model.Comparedwiththetypicalandnon-anticipativePRmodel,itexpressesthecharacteristicsofthepriorityschedulinginput-linegroupoutputwithmulti-channelinATMexchangesystem.ThesimulationexperimentshowsthatthismodelcanimprovetheHOLblockandtheperfonnanceofinput-queuedATMswitchnetworkdramatically.ThismodelhasabetterdevelopingprospectinATMexchangesystem.

简介：TheDirectionsofArrivals(DOAs),speedsanddistancesoftargetsareallrequiredforarraysignalprocessing.Basedontheperiodicphaseshiftofcoherentpulsesequencewaveform,anewestimationofmulti-targets'2-Dimentional(2-D)DOAangle,Dopplerfrequencyshiftandrelativetime-delayisproposed.Basedonavirtualsensorarrayconstructedbypulsecumulating,theestimationsofazimuth,elevation,Doppierfrequencyshiftandtime-delaycanbeobtainedsimultaneously,andtheleastnumberofpulsescouldbetwo.Thismethodiscomputationallyefficienteveninheaviernoisedenvironment,andallestimationsareautomaticallypairedincalculationprocesswithnospectrumsearching.Furthermore,thisalgorithmcanbeusedtoanyplanesensorarrayanddealwithmanytargetsatthesametimeonlybyfewsensors.Thetargetsnumberthatcandealwithsimultaneouslyisseveraltimestothesensornumber,whichistheupperlimitfornormalalgorithmssuchasESPRITandMUSIC.Thesecharacteristicswouldbeveryuseful,especially,foraerialsystems.Simulationsdemonstratethecapabilitiesofthismethodefficiently.

简介：Aterahertz（THz）polarizerandswitchstructureisproposedbasedonthephasetransitionofvanadiumdioxide（VO2）.WhenVO2isintheinsulationphase,theresonancefrequenciesoftheproposedstructureare1.49THzand1.22THzforthex-andy-polarization,respectively.ItcanperformasaTHzpolarizerwithextinctionratiosof52.5dBand17dBforthey-andx-polarization,respectively;WhenVO2transformsintometallicphase,theresonancefrequencyforx-polarizationwaveshiftsfrom1.49THzto1.22THz,whilethatremainsstillforthey-polarizationcomponent.Itmeansthatthestructurecanworkasapolarization-dependentTHzswitchwithahighextinctionratioof32dB.

简介：Hyper-spectralimagingspectrometerhashighspatialandspectralresolution.Itsradiometriccalibrationneedstheknowledgeofthesourcesusedwithhighspectralresolution.Inordertosatisfytherequirementofsource,anon-orbitradiometriccalibrationmethodisdesignedinthispaper.Thischainisbasedonthespectralinversionaccuracyofthecalibrationlightsource.Wecompilethegeneticalgorithmprogresswhichisusedtooptimizethechanneldesignofthetransferradiometerandconsiderthedegradationofthehalogenlamp,thusrealizingthehighaccuracyinversionofspectralcurveinthewholeworkingtime.Theexperimentalresultsshowtheaveragerootmeansquarederroris0.396%,themaximumrootmeansquarederroris0.448%,andtherelativeerrorsatallwavelengthsarewithin1%inthespectralrangefrom500nmto900nmduring100hoperatingtime.Thedesignlaysafoundationforthehighaccuracycalibrationofimagingspectrometer.

简介：在有直接路径的严肃的堵住的城市的环境，non-line-of-sight(NLOS)繁殖影响地点评价精确性。在这篇文章，一个新奇算法被开发，它能显著地在地点评价减轻NLOS错误。多利用天线数组，信息散布ers那个原因NLOS繁殖被获得。然后，我们把信息与TOA/TDOA相结合估计活动车站(MS)的地点的基于的地点算法。模拟结果证明我们的方法能减轻NLOS错误并且极大地提高地点精确性。

简介：Theevolutionoftheelectronphaseorbitsbasedonthemulti-photonnonlinearComptonscatteringwiththehighpowerlaser-plasmaisdiscussedbyusingKroll-Morton-Rosenbluththeory.Therandomevolutionoftheun-capturedelectronphaseorbitsfromperiodicitytonon-periodicityisfoundaftertheenergyhasbeenexchangedbetweentheelectronandphotons.Withtheincreaseoftheabsorbedphotonnumbernbyanelectron,thisevolutionwillbemoreandmoreintense,whilewhichisrapidlydecreasedwiththeenhancementofthecollisionnon-flexibilityξandtheirinitialspeedsoftheelectronsandphotons,butthisevolutionislowerthanthatinthehighpowerlaserfield.Whentheelectronsarecapturedbythelaserfield,theevolutionisfinished,andtheelectronswillstablytransport,andthephotonsdon'tprovidetheenergyfortheseelectronsanymore.

简介：有可变系数的一个微波photonic过滤器(MPF)被建议并且示威，它被多波长纤维激光和Mach-Zehnder干涉仪(MZI)构造。通过改变Mach-Zehnder干扰的斜坡特征，光谱由光可变延期线(OVDL)调整了，到紧张调整(IM)的从阶段调整(下午)的变换被认识到。有Lyot-Sagnac光过滤器的多波长纤维激光有可变波长间距。设计过滤器因此有龙头和龙头重量的一个可变数字。作为结果，通带中心频率的悦耳的范围是2.6GHz。MPF的可配置性能被调整纤维激光的产量也认识到。

简介：Graphicprocessingunits(GPUs)havebeenwidelyrecognizedascost-efficientco-processorswithacceptablesize,weight,andpowerconsumption.However,adoptingGPUsinreal-timesystemsisstillchallenging,duetothelackinframeworkforreal-timeanalysis.Inordertoguaranteereal-timerequirementswhilemaintainingsystemutilizationinmodernheterogeneoussystems,suchasmulticoremulti-GPUsystems,anovelsuspension-basedk-exclusionreal-timelockingprotocolandtheassociatedsuspension-awareschedulabilityanalysisareproposed.TheproposedprotocolprovidesasynchronizationframeworkthatenablesmultipleGPUstobeefficientlyintegratedinmulticorereal-timesystems.Comparativeevaluationsshowthattheproposedmethodsimproveupontheexistingworkintermsofschedulability.

简介：SpectrumsensingisoneofthekeytechnologiesinCognitiveRadios(CRs).Previousworksareaccomplishedundersimplechannelmodels,whichmayleadtounreliableresultswhenitappliedtotheover-the-airsystems.Inthispaper,weinvestigatetheperformanceofaMulti-ResolutionSpectrumSensing(MRSS)algorithmundermeasurement-basedchannelmodelsinChina.MRSSisawaveletbasedalgorithmwhichissuitablefornon-stationary,widebandsignalanalysis.Usingstatisticalmod-eling,measurement-basedchannelmodelsarepresentedundertypicalurbanandsuburbanscenariosinShanghai,China.Then,theperformanceoftheMRSSalgorithmisevaluatedunderthemeasure-ment-basedchannelmodels.Simulationresultsshowthat,usingMRSS,theperformanceisalwaysbetterinthescenarioswhereLine-Of-Sight(LOS)pathexist;also,inLOSscenarios,richscatteringeffecthelpstoincreasetheperformance.

简介：Thispaperstudiestheproblemofeffectiveresourceallocationformulti-radioaccesstechnologies(Multi-RAT)nodesinheterogeneouscognitivewirelessnetworks(HCWNs).End-to-endutility,whichisdefinedasthedelayofend-to-endcommunication,istakenintoaccountinthispaper.InthescenarioofHCWNs,itisassumedthatthecognitiveradionodeshavetheabilityofMulti-RATandcancommunicatewitheachotherthroughdifferentpathssimultaneouslybysplittingthearrivalpackets.Inthispaper,theproblemisformulatedastheoptimizationofsplitratioandpowerallocationofthesourcecognitiveradionodetominimizethedelayofend-to-endcommunication,andalowcomplexitystep-by-stepiterativealgorithmisproposed.Numericalresultsshowgoodperformanceoftheproposedalgorithmovertwootherconventionalalgorithms.

简介：Thepaperfirstdiscussesshortcomingsofclassicaladjacent-framedifference.Secondly,basedontheimageenergyandhighorderstatistic(HOS)theory,backgroundreconstructionconstraintsaresetup.Underthehelpofblock-processingtechnology,backgroundisreconstructedquickly.Finally,backgrounddifferenceisusedtodetectmotionregionsinsteadofadjacentframedifference.TheDSPbasedplatformtestsindicatethebackgroundcanberecoveredlosslesslyinaboutonesecond,andmovingregionsarenotinfluencedbymovingtargetspeeds.Thealgorithmhasimportantusagebothintheoryandapplications.

简介：Ageometricalanalysisbasedalgorithmisproposedtoachievethestereomatchingofasingle-lensprismbasedstereovisionsystem.Bysettingthemulti-faceprisminfrontalpositionofthestaticCCD(CM-140MCL)camera,equivalentstereoimageswithdifferentorientationsarecapturedsynchronouslybyvirtualcameraswhicharedefinedbytwoboundarylines:theopticalaxisandCCDcamerafieldofviewboundary.Subsequently,thegeometricalrelationshipbetweenthe2Dstereoimagesandcorresponding3Dsceneisestablishedbyemployingtwofundamentals:raysketchinginwhichallthepertinentpoints,lines,andplanesareexpressedinthe3Dcameracoordinatesandtheruleofrefraction.Landingonthisrelationship,theepipolargeometryisthusobtainedbyfittingasetofcorrespondingcandidatepointsandthereafter,stereomatchingoftheprismbasedstereovisionsystemisobtained.Moreover,theuniquegeometricalpropertiesoftheimagingsystemallowtheproposedmethodfreefromthecomplicatedcameracalibrationproceduresandtobeeasilygeneralizedfrombinocularandtri-oculartomulti-ocularstereovisionsystems.Theperformanceofthealgorithmispresentedthroughtheexperimentsonthebinocularimagingsystemandthecomparisonwithaconventionalprojectionmethoddemonstratestheefficientassessmentofournovelcontributions.

简介：摘要本文提出了一种新的性能评估模型——multi-roofline模型。作为roofline模型的延伸，multi-roofline模型可以为异构计算平台提供二元域算法建模，分析算法在异构计算平台上所能取得的理论极限，并能帮助找到算法的理论瓶颈，为算法在异构计算资源上的部署提供有力支持。

简介：Thisletterstudiesandanalyzestheworkingfeaturesofmaincircuitoftri-levelboostPowerFactorCorrect(PFC)converterandtheadvantagesoftri-levelswitchconverterinaspectsofbearinghigh-voltageofpowercomponents,overallsystemlossandmagneticcomponentselectionbaseduponthesingle-levelboostPFCswitchconverter.Besides,relyingontheapplicationofmi-croprocessorinpowerconvertertechnologyandDSP(DigitalSignalProcessing)chip'sstrongcal-culatingcapacity,theletterpresentstheadoptionofmodifiedschemeoftri-levelboostPFCconverterunderthecontrolofpredictivecontrolalgorithm.Moreover,theoperatingprincipleandcontrolmethodarespecified,theresultsofcircuittestandanalysisareprovidedandtheadvantagesofpre-dictivecontroltechnology-basedmulti-levelboostPFCconverterisverified.

简介：Classicalnetworkreliabilityproblemsassumebothnetworksandcomponentshaveonlybinarystates,fullyworkingorfullyfailedstates.Butmanyactualnetworksaremulti-state,suchascommunicationnetworksandtransportationnetworks.Thenodesandarcsinthenetworksmaybeinintermediatestateswhicharenotfullyworkingeitherfullyfailed.Asimulationapproachforcomputingthetwo-terminalreliabilityofamulti-statenetworkisdescribed.Two-terminalreliabilityisdefinedastheprobabilitythatdunitsofdemandcanbesuppliedfromthesourcetosinknodesunderthetimethresholdT.Thecapacitiesofarcsmaybeinastochasticstatefollowinganydiscreteorcontinuousdistribution.Thetransmissiontimeofeacharcisalsonotafixednumberbutstochasticaccordingtoitscurrentcapacityanddemand.Tosolvethisproblem,acapacitatedstochasticcolouredPetrinetisproposedformodellingthesystembehaviour.Placesandtransitionsrespectivelystandforthenodesandarcsofanetwork.Capacitatedtransitionandself-modifiedtokencolourwithrouteinformationaredefinedtodescribethemulti-statenetwork.Bythesimulation,thetwo-terminalreliabilityandnodeimportancecanbeestimatedandtheoptimalroutewhosereliabilityishighestcanalsobegiven.Finally,twoexamplesofdifferentkindsofmultistatenetworksaregiven.

简介：异构的网络(het网)是推进的长期的进化的部分(LTE--一)学习条款并且与不同重叠范围区域的房间的混合物代表细胞的推广，例如，很多个继电器和微微房间在一样的频率由一个宏房间覆盖了。平衡的交通和干扰管理为LTE在het网设计被要求--维持系统性能的A。在这份报纸，我们建议集中于减少有效资源费用并且在多域het网减轻合作隧道干扰的一个内部域的合作交通平衡计划。我们首先在het网建立了多域的概念并且把合作隧道干扰合并到平衡计划的建议交通。然后，我们为最小化有效资源费用作为一个多域交通资源优化问题为交通平衡问题建模。为平衡计划的建议交通的详细实现被设计。在数字评估，基因算法(GA)作为一个优化方法被用来证明全部的有效资源费用显著地通过我们平衡计划的建议内部域的交通被减少，与平衡计划的intra域交通作比较。43%资源费用被节省。在系统水平模拟，信号干扰噪音比率(SINR)和产量的性能结果证明建议计划在het网在干扰管理有大优点。

简介：一面非线性的光环镜子(NOLM)基于线性洞可切换的多波长做耳的纤维(EDF)激光被建议并且试验性地示威了。由于紧张依赖者transmissivity的特征，NOLM能有效地减轻同质的拓宽获得媒介的模式比赛，以便放射激光的多波长能在房间温度被完成。由调整极化控制器(PC)的状态，在建议激光罐头的放射激光的波长的数字在1530nm的波长附近与0.4nm的波长间距从11～13灵活地被调整。

简介：Orthogonalfrequencydivisionmultiplexing(OFDM)whichhasbeenadoptedinthelong-termevolution(LTE)systemcanimprovethesystemcapacityobviously.However,italsobringsaboutsevereinter-cellinterference(ICI)forcell-edgeusers(CEUs).Totacklethisproblem,multi-userselectionandpowercontrol(MuS-PC)isproposedasanefficientschemeinuplinkcoordinatedmulti-pointmulti-usermulti-inputmulti-output(CoMP-MU-MIMO)transmission/reception.Thispaperjointlyconsidersuser’ssignaltointerferenceplusnoiseratio(SINR)andproportionalfairness(PF)tomaximizethetotalchannelcapacityinmulti-userselectionbyformulatingapenaltyfunction.Tosimplifythepenaltyfunction’scomputation,particleswarmoptimization(PSO)algorithmisintroduced.Inaddition,powercontrolisadoptedtomaximizeoverallenergyefficiency.SimulationresultsdemonstratethattheMuS-PCschemecannotonlyobtaintheoptimaltotalchannelcapacitywhileguaranteeeachuser’squalityofservice(QoS)andPF,butalsolargelyreducecomputationalcomplexityandimproveenergyefficiency.Asaresult,thepoorcommunicationqualityofCEUscanbeenhanced.

简介：Atunableself-seededmulti-wavelengthBrillouin-erbiumfiberlaser(BEFL)isproposedanddemonstratedbasedonafew-modefiberfilter(FMFF)withvaryingtemperature.TheFMFFconfigurationisasectionofuncoatedfew-modefiber(FMF)sandwichedbetweentwoup-tapers.Asthetemperaturevariesfrom25°Cto125°C,thetransmissionspectrumofFMFFmovestowardsthelongerwavelength.Theself-excitedBrillouinpumpisinternallyachievedbycascadedstimulatedBrillouinscattering(SBS)inthesinglemodefiber(SMF).ThenemployingtheFMFFtemperaturevariationcharacteristicsintheringcavityfiberlaser,themulti-wavelengthoftheoutputlasercanbetuned,andthetunablerangeisabout8.0nm.Thegenerationofupto15BrillouinStokeswavelengthswith16dBopticalsignal-to-noiseratio(OSNR)isrealized.

简介：Inordertoestablisharoutesupportingmulti-constrainedqualityofservice(QoS),increasenetworkthroughputandreducenetworkenergyconsumption,animprovedantcolony-basedmulti-constrainedQoSenergy-savingroutingalgorithm(IAMQER)isproposed.Theantcolonyalgorithm,asoneoftheavailableheuristicalgorithms,isusedtofindtheoptimalroutefromsourcenodetodestinationnode.TheproposedIAMQERalgorithm,whichisbasedontheanalysisoflocalnodeinformationsuchasnodequeuelength,nodeforwardingnumberofdatapacketsandnoderesidualenergy,balancestherelationshipbetweenthenetworkthroughputandtheenergyconsumption,thusimprovingtheperformanceofnetworkinmulti-constrainedQoSrouting.SimulationresultsshowthatthisIAMQERalgorithmcanfindtheQoSroutethatreduceaverageenergyconsumptionandimprovesnetworkpacketdeliveryratioundertheend-to-enddelayandpacketlossratioconstraints.