简介：Thispaperteststheideaofsubstitutingtheatmosphericobservationswithatmosphericreanalysiswhensettingupacoupleddataassimilationsystem.Thepaperfocusesonthequantificationoftheeffectsontheoceanicanalysisresultedfromthissubstitutionanddesignsfourdifferentassimilationschemesforsuchasubstitution.AcoupledLorenz96systemisconstructedandanensembleKalmanfilterisadopted.Theatmosphericreanalysisandoceanicobservationsareassimilatedintothesystemandtheanalysisqualityiscomparedtoabenchmarkexperimentwherebothatmosphericandoceanicobservationsareassimilated.Fourschemesaredesignedforassimilatingthereanalysisandtheydifferinthegenerationoftheperturbedobservationensembleandtherepresentationoftheerrorcovariancematrix.Theresultsshowthatwhenthereanalysisisassimilateddirectlyasindependentobservations,theroot-mean-squareerrorincreaseofoceanicanalysisrelativetothebenchmarkislessthan16%intheperfectmodelframework;inthebiasedmodelcase,theincreaseislessthan22%.Thisresultisrobustwithsufficientensemblesizeandreasonableatmosphericobservationquality(e.g.,frequency,noisiness,anddensity).Iftheobservationisoverlynoisy,infrequent,sparse,ortheensemblesizeisinsufficientlysmall,theanalysisdeteriorationcausedbythesubstitutionislessseveresincetheanalysisqualityofthebenchmarkalsodeterioratessignificantlyduetoworseobservationsandundersampling.Theresultsfromdifferentassimilationschemeshighlighttheimportanceoftwofactors:accuraterepresentationoftheerrorcovarianceofthereanalysisandthetemporalcoherencealongeachensemblemember,whicharecrucialfortheanalysisqualityofthesubstitutionexperiment.

简介：为越过在象文件同步那样的应用程序的宽区域网络(广域网)的文件通讯的数据deduplication并且云环境反射通常完成以数据deduplication的重要时间开销的成本节省的重要带宽。时间开销包括在二个地理上分布式的节点为数据deduplication要求的时间(例如，磁盘存取瓶颈)并且在发送者之间的复制质问/答案操作和接收装置，后来，每询问或答案介绍至少一个潜伏的双程的时间(RTT)。在这份报纸，我们在场越过有元数据反馈和元数据利用(MFMU)的广域网的一个数据deduplication系统，联系了时间开销以便利用数据deduplication。在建议MFMU系统，到发送者的从接收装置的选择元数据反馈被介绍减少复制质问/答案操作的数字。另外，到马具，元数据在接收装置联系了磁盘I/O操作，以及带宽开销由元数据反馈介绍了，磁滞现象哈希值重新组合机制基于的元数据利用部件被介绍。我们的试验性的结果证明MFMU与保存没被元数据反馈减少的比率的带宽完成了20%40%deduplication加速的一般水准，当与基线相比内容定义组合(CDC)在LBFS(Low-bandwith网络文件系统)使用，组合算法的退出的最先进的Bimodal基于数据deduplication解决方案。

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简介：有与采样为非线性的系统的一个类活跃骚乱拒绝控制(ADRC)调节的参数的担心快不足够评估的这份报纸。理论结果显示出在采样率之间的量的关系，ADRC的参数，在系统和靠近环的系统的性质的无常的尺寸。而且，在给定的采样率下面的样品数据ADRC的能力是讨论的份量上。

简介：Inthispaper,theforwardingobjectiveandmobilitylawofnodesinopportunisticnetworksarefirstinvestigatedtoestablishamathematicalmodelforfurtheranalysis,thenagraduallyaccelerateddataforwardingalgorithmisproposed.Inthisalgorithm,accordingtothedistancebetweendatacarriers(nodes)andthedestination,someintermediatenodesareselectedtorelaythedata.Especially,theforwardedcopiescanbeincreasedwhenthedelayreachesathreshold,toguaranteetherequireddeliveryratio.Thesimulationresultsshowthattheproposedalgorithmcaneffectivelyreducethestorageoccupanciesofnodesandforwardingdelay,andguaranteethedeliveryratiosimultaneously.

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简介：WithreferencetoNationalPopulationCensusRegulationandNoticeofGeneralOfficeoftheStateCouncilonConducting1%PopulationSamplingSurvey2015,ChinainitiatedNational1%PopulationSamplingSurveyatzerohouronNovember1,2015asthe

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简介：Tomeettherequirementoflong-timeacquisitionwithoutinterruptionsfortheplannednucleardecayexperimentsatCSRe,anewdataacquisitionsystemhasbeensuccessfullydevelopedin2016.DuringthebeamtimeinDec.2016,ournewsystemhasbeenrunningstablywithoutanyproblemsandcontinuouslyacquiringhundredsofdatawithoutanybreaks.Thewholesystemisbasedonaspectrumanalyzer(R&SFSVR7)andanIQrecorder(R&SIQR100).BothofthemareconnectedtoaserverviaEthernet.Thespectrumanalyzeracquiresthetime-domaininformationinthefrequencyrangeofinterestfromtheSchottkyresonator.TheIQrecordercollectstheinformationfromtheanalyzerandpacksitintodata.Oncethedatahavebeenentirelytransferredtotheserver,itwillimmediatelyberemovedfromIQrecorder.Thehigh-volumesolid-statedrive(1TB)ofIQrecorderallowsforavirtuallyunlimitedsizeofacquiredlestobestoredinpractice.Besides,inordertobypasstheunreliabletriggersystemofIQrecorder,webuiltanindependenttriggersystemwithamicrocontroller(ArduinoYun)totranslatetheTTLsignaltonetworkcommands.

简介：Thecompressedsensing(CS)ofaccelerationdatahasbeendrawingincreasingattentioningaittelemonitoringapplication.Insuchapplication,therestillexistsomechallengingissuesincludinghighenergyconsumptionofbody-worndeviceforaccelerationdataacquisitionandthepoorreconstructionperformanceduetononsparsityofaccelerationdata.Thus,thenovelschemeofcompressivesensingofaccelerationdataisneededurgentlyforsolutionsthatarefoundtotheseissues.

简介：Wepresentaninterferometrysetupandthedetailedfringeanalysismethodforintenseshortpulse(SP)laserexperiments.Theinterferometryschemewasrefinedthroughmultiplecampaignstoinvestigatetheeffectsofpre-plasmasonenergeticelectronsattheJupiterLaserFacilityatLawrenceLivermoreNationalLaboratory.Theinterferometerusedafrequencydoubled(λ=0.527μm)0.5pslongopticalprobebeamtomeasurethepre-plasmadensity,aninvaluableparametertobetterunderstandhowvaryingpre-plasmaconditionsaffectthecharacteristicsoftheenergeticelectrons.Thehardwareofthediagnostic,dataanalysisandexampledataarepresented.ThediagnosticsetupandtheanalysisprocedurecanbeemployedforanyotherSPlaserexperimentsandinterferograms,respectively.

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简介：Countdatawithexcesszerosareoftenencounteredinmanymedical,biomedicalandpublichealthapplications.Inthispaper,anextensionofzero-inflatedPoissonmixedregressionmodelsispresentedfordealingwithmultileveldataset,referredashierarchicalmixturezero-inflatedPoissonmixedregressionmodels.AstochasticEMalgorithmisdevelopedforobtainingtheMLestimatesofinterestedparametersandamodelcomparisonisalsoconsideredforcomparingmodelswithdifferentlatentclassesthroughBICcriterion.AnapplicationtotheanalysisofcountdatafromaShanghaiAdolescenceFitnessSurveyandasimulationstudyillustratetheusefulnessandeffectivenessofourmethodologies.

简介：ThecharacteristicsoftheatmosphericboundarylayerheightovertheglobaloceanwerestudiedbasedontheConstellationObservationSystemofMeteorology,IonosphereandClimate(COSMIC)refractivitydatafrom2007to2012.Resultsshowthattheheightismuchcharacteristicofseasonal,inter-annualandregionalvariation.Globally,thespatialdistributionoftheannualmeantopheightshowsasymmetricalzonalstructure,whichismorezonalintheSouthernHemispherethanintheNorthernHemisphere.Theboundarylayertopishighestinthetropicsandgraduallydecreasestowardshigherlatitudes.Theheightisinarangeof3to3.5kminthetropics,2to2.5kminthesubtropicalregions,and1to1.5kmorevenlowerinmiddleandhighlatitudes.Thediurnalvariationofthetopheightisnotobvious,withtheheightvaryingfromtenstohundredsofmeters.Furthermore,itisdifferentfromregiontoregion,someregionshavethemaximumheightduring9:00to12:00,othersat15:00to18:00.

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简介：一个微弱地联合的吸收系统，在SST，观察通过一个整体被吸收进acoupled气候模型(CASESM-C)最佳的插值计划，被建立。这个系统是为历史的气候模拟的一个有用工具，显示出实质的优点，包括维持大气的反馈，并且阻止海洋的地远漂流离开观察，在其它之中。在联合模型集成期间，在分析的表面和表面下的海洋的地的偏爱能与unassimilated地相比被减少。从系统，气候学和气候系统的interannual可变性基于输出的30模型年被评估。结果证明系统罐头相当复制climatological全球降水和SLP，但是它仍然受不了双ITCZ问题。而且，ENSO脚印，它被ENSO相关的表面空气温度，geopotential高度和降水在ElNi期间揭示?o进化，被系统基本上复制。系统能也在西方的诺思太平洋区域，大气的反馈为气候模拟在是关键的在interannual和intraseasonaltimescales上模仿观察SST降雨关系很好。

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简介：Missingdataandtime-dependentcovariatesoftenarisesimultaneouslyinlongitudinalstudies,anddirectlyapplyingclassicalapproachesmayresultinalossofefficiencyandbiasedestimates.Todealwiththisproblem,weproposeweightedcorrectedestimatingequationsunderthemissingatrandommechanism,followedbydevelopingashrinkageempiricallikelihoodestimationapproachfortheparametersofinterestwhentime-dependentcovariatesarepresent.Suchprocedureimprovesefficiencyovergeneralizedestimationequationsapproachwithworkingindependentassumption,viacombiningtheindependentestimatingequationsandtheextractedadditionalinformationfromtheestimatingequationsthatareexcludedbytheindependenceassumption.Thecontributionfromtheremainingestimatingequationsisweightedaccordingtothelikelihoodofeachequationbeingaconsistentestimatingequationandtheinformationitcarries.Weshowthattheestimatorsareasymptoticallynormallydistributedandtheempiricallikelihoodratiostatisticanditsprofilecounterpartfollowcentralchi-squaredistributionsasymptoticallywhenevaluatedatthetrueparameter.Thepracticalperformanceofourapproachisdemonstratedthroughnumericalsimulationsanddataanalysis.

简介：CombinedwithTRMMproductsandTropicalCyclone(TC)besttrackdatainNorthwestPacificfrom1January2003to31December2009,atotalof118TCs,including336instantaneousTCprecipitationobservationsareestablishedastheTRMMTCdatabase,andthedatabaseisstratifiedintofourintensityclassesaccordingtothestandardofTCintensityadoptedbyChinaMeteorologicalAdministration(CMA):SevereTropicalStorm(STS),Typhoon(TY),SevereTyphoon(STY)andSuperTyphoon(SuperTY).ForeachTCsnapshot,themeanrainfalldistributioniscomputedusing10-kmannulifromtheTCcentertoa300-kmradius,thentheaxisymmetriccomponentofTCrainfallisrepresentedbytheradialdistributionoftheazimuthalmeanrainrate;themeanrainrates,raintypesoccurrenceandcontributionproportionarecomputedforeachTCintensityclass;andthemeanquadrantaldistributionofrainratesalongTCsmotionisanalyzed.Theresultshowsthat:(1)TCsmeanrainratesincreasewiththeirintensityclasses,andtheirradialdistributionsshowsingle-peakcharacteristicgradually,andfurthermore,thecharacteristicsofrainratesoccurrenceandcontributionproportionchangefromdual-peaktosingle-peakdistribution,withthepeakrainrateatabout5.0mm/h;(2)Stratiformraindominatetheraintypeintheanalysiszone,whileconvectiverainmainlyoccurredintheeye-wallregion;(3)ThevaluesofmeanrainrateineachquadrantalongTCsmotionareclosetoeachother,relatively,thevalueintheright-rearquadrantisthesmallestone.

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