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简介：Thispaperanalyzesthecurrentdifficultiesencounteredinon-lineinspectionsystemsofstripsurfacequality,specificallyrelatingtoproblemswithreal-timeprocessingofhugeamountsofdata.Toaddressthisneed,thispaperdescribesanFPGA-basedhigh-speedimageprocessingmodulewithbothhardwareandsoftwareaspects.Improvingthesetwoaspectstogetherwillhelpthesystemachievereal-timeprocessingofmassiveimagedata,andsimplifiesthearchitectureofthestripsurfacequalityon-lineinspectionsystem.

简介：Roadfrictioncoefficientreal-timeestimationmethodsisanimportantissueandprobleminautomotiveactivesafetycontrolsystemdevelopment.Firstafixedfeedbackgainslidingmodeobserverofroadadhesioncoefficientisdesignedthroughtheestablishmentoftire/roaddynamicfrictionmodelinthisarticle.Thesimulationresultsshowsthattheobservercanwellreal-timeidentifythecurrentroadadhesioncharacteristics.Andmoreimportantly,theobserveronlyneedwheelspeedsignalandthebrakingtorque(brakepressure)signal,sothesystemislowcost,anditsadaptabilityisgood.Thereisnodoubtthisestimationmethodhasagoodapplicationprospect.

简介：Thispaperaddressestheissueofreal-timedatatransmissioninvehiclestoroadside(V2R)environmentbythehybridcoordinationfunction(HCF)ofcontrolledchannelaccess(HCCA)specifiedbytheIEEE802.11pstandard.HCCAisoneofthemediumaccessmechanismsintheIEEE802.11standard,andusesthepollingschemesimilartothepointcoordinationfunction(PCF)toprovidereliablequalityofservice(QoS),whichmaycauseresourceovershootingandhightimeconsuming.ThispapertriestoimprovetheperformanceoftheHCCApollingschemeanddesignsnewdatatransmissionschedulingscheme.Thesimulationresultsoftheproposalarecomparedwiththoseofthestandardstrategy.SimulationresultsdemonstratethattheimprovedHCCAhaslowerdelay,lossrate,andhigherthroughputthanthoseofthestandardone.

简介：Adoublycladdingsingle-modefiberhumiditysensorisfabricatedbyagarose.Thesensorhasaninsertionlossof0.08dBandapowerchangeof17.83dB.Theresponsesofthesensortoarelativehumidity(RH)rangeform30%to100%atatemperaturerangeform25to34Carevalidated.TheexperimentsdemonstratethattheabsorbabilityofagarosegeltomoisturedecreaseswithincreasingRHinmeasuredgas.Weproposeacalibrationmethodthatuseslookuptablesandconstructacorrespondingcalibrationmatrix.Usingthesensor,weconductreal-timemonitoringofRHinfreshconcreteduringitshardeningprocess.

简介：Real-timevideostreamingusingultra-wideband(UWB)technologyisexperimentallydemonstratedalonglong-reachpassiveopticalnetworks(LR-PONs)withdifferentwiredandwirelessreaches.ExperimentaltestsusingexternalanddirectmodulationwithUWBwirelessradiationinthe10-and60-GHzbandsareperformed.Anultra-bendablefiberisalsoconsideredforalast-miledistribution.ThevideoqualityattheoutputoftheopticalfiberinfrastructureoftheLR-PONisassessedusingtheerrorvectormagnitude(EVM),andthelinkqualityindicator(LQI)isusedasafigureofmeritafterwirelessradiation.AnEVMbelow–17dBisachievedforbothexternallyanddirectlymodulatedLR-PONscomprisingupto125kmofopticalfiber.EVMimprovementisobservedforlongerLR-PONswhendirectlymodulatedlasers(DMLs)areusedbecauseoftheamplitudegainprovidedbythecombinedeffectofdispersionandDML’schirp.Comparedwithopticalback-to-backoperation,theLQIleveldegradestothemaximumaround20%forLR-PONsrangingbetween75and125kmoffiberreachandwithawirelesscoverageof2minthe10-GHzUWBband.ThesamelevelofLQIdegradationisobservedusingthe60-GHzUWBbandwithaLR-PONintegrating101kmofaccessnetwork,alast-miledistributionusingultra-bendablefiber,anda5.2-mwirelesslink.

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简介：Thispaperpresentsanoveltimedelayestimation(TDE)methodusingtheconceptofentropy.Therelativedelayisestimatedbyminimizingtheestimatedjointentropyofmultiplesensoroutputsignals.Whenestimatingtheentropy,theinformationaboutthepriordistributionofthesourcesignalisnotrequired.Instead,theParzenwindowestimatorisemployedtoestimatethedensityfunctionofthesourcesignalfrommultiplesensoroutputsignals.Meanwhile,basedontheParzenwindowestimator,theRenyi’squadraticentropy(RQE)isincorporatedtoeffectivelyandefficientlyestimatethehigh-dimensionaljointentropyofthemultichanneloutputs.Furthermore,amodifiedformofthejointentropyforembeddinginformationaboutreverberation(multipathreflections)forspeechsignalsisintroducedtoenhancetheestimator’srobustnessagainstreverberation.

简介：Thesystemdynamicsofturningprocessescanbedescribedbyadelaydiferentialequation.Howtoimprovethestabilityandsuppressthevibrationofcuttingisofaninterestingtopic.Inthispaper,amultipletime-delaycontrollerisdevelopedbasedondiscreteoptimalcontrolmethodfortheturningvibrationscontrol.Numericalsimulationsarecarriedouttoverifytheefciencyofthecontroller.Resultsindicatethedesignedcontrollercansuppressthecuttingvibrationefcientlyandimprovethestabilityofthecuttingprocesses.Theinfluenceofdesignedtime-delayandsamplingtimeonthecontrolperformanceisalsodiscussed.

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简介：34年,10座总冠军奖杯,6获常规赛MVP,球队胜率65.9%,再加上贾巴尔、约翰逊、奥尼尔、科比这一串闪耀的名字,洛杉矶湖人队如今在NBA的江湖地位稳稳居上,这一切都要归功于杰里·巴斯先生。2月18日,这位"美国体育史上最伟大的老板"因癌症去世,享年80岁。在他去世前一周,躺在重症监护室时,福布斯发布了NBA最新球队市值排行榜,湖人以10亿美元的价值高居全联盟第二——1979年他买

简介：介入系统是评价理论一个子系统,也是衡量话语人际意义重要评估指标。文章通过对＂It’sTimetoTurnthePage＂话语介入资源分析发现,对话性缩约与对话性扩展策略的使用帮助了演讲话语人际意义的有效实现。同时,对话性缩约策略使用频率更高,突出演讲者的主动承担话语责任的特点。

简介：改进动态特征和联合能力，一个新预兆的功能的控制算法与时间延期为强壮的联合multivariable系统被建议，它联合预兆的功能的控制和去耦控制。首先，一个去耦控制算法被建议，在哪个有延期被分析decoupled的振幅频率和阶段频率特征建立的时间的一阶的模型使遭到。然后，一个控制器基于预兆的功能的控制的原则在去耦以后为单个变量的题目被设计。模拟结果证明这个建议算法有更少的联机计算时间并且更快的追踪。它能为复杂multivariable系统提供更有效的控制。

简介：Basedonthestrongearthquakecatalogue,thispaperdiscussesthecharacteristicsofthetimeseriesofstrongearthquakeactivitiesintheworld,westernChinesemainlandanditsperipheral"bigtriangleseismicregion",aswellastheChinesemainland.AccordingtotheanalysisoftheperiodicfeaturesofglobalseismicityofM≥8.0strongevents,itisfoundthatthereissignificantdifferenceinglobalseismicitybeforeandafterthe1960s.StatisticalanalysiswiththeFishermethodhasrevealedthatthe"bigtriangularseismicregion"hasexperiencedaprocessofM8.0earthquakeactivitywithadurationofoverahundredyearssince1800.Furtheranalysisshowsthattheglobalseismicityandthe"bigtriangularseismicregion"possiblyhasaperiodofahundred-yearscale,andhasquasisynchronicitytoacertainextent.TheshallowearthquakeactivityofMS≥7.0intheChinesemainlandisobviouslycontrolledbytheseismicityinthebigtriangularseismicregionandbyglobalseismicityinalargerspatial-scale.Intermsofthetimeseriesoftheseearthquakes,theseismicityshowsadecadalandcentury-scaleactivitypatterns.

简介：ThispaperinvestigatestheasymptoticalstabilizationofHamiltoniancontrolsystemswithtimedelay.First,Hamiltoniancontrolsystemswithtimedelayareproposed.Second,atwo-to-one（TTO）principleisintroducedthattwodifferentHamiltonianfunctionsaresimultaneouslyenergy-shapingbyonedesiredenergyfunction.Third,anovelmatchingequationisbuiltviatheTTOprinciplefortheHamiltoniancontrolsystemswithtimedelay,whichgeneratesaneffectivecontrollawfortheHamiltoniancontrolsystemswithtimedelay.Finally,anumericalexampleshowstheeffectivenessofproposedmethod.