简介:Withtherapiddevelopmentofglobalinformationhighway,multimediacommunicationtechnologyplaysamoreandmoreimportantroleinnationaleconomicandsocialdevelopment.However,themultimediacommunicationsystemisacomplicatedrealtimedistributedsystemanditssoftwareisdifficulttodevelop.Inordertoimprovetherapiddevelopmentandapplicationofthemultimediacommunicationtechnology,thereisanurgentneedtocarryoutthebasicresearchworkofsoftwaredevelopmentplatforminthisfield.
简介:Title:DiscontinuousDeformationAnalysisandRecentCrustalMovementAuthor:WANGZeminSupervisor:LIUJingnanThestudyfocusesonthewait_to_be_resolvedimportantdifficultproblem—howtoanalyzeandprocessthenumerousdataofcrustalmovementgainedbyrecentmeasuringmethodsoastodiscovertheinnermechanisms,thispaper,adopt
简介:CertaintyfactorsofearthquakeprecursoryanomalyevidencesCF(E)Zhao-BiZHENG(郑兆)(SeismologicalBureauofAnhuiProvince,Hefei230031,Ch...
简介:StudyoncorrelativityamongcapacitydimensionD0,infor-mationdimensionD1,algorithmiccomplexityC(n)andbValueWEI-BINHAN(韩渭宾),GUI-X...
简介:Sponsoredby:ChineseAcademyofSciencesNationalNaturalScienceFoundationofChinaPublishedby:ScienceinChinaPressChairman:ZHOUGuangzhao(ZhouGuangZhao)Editor-in-Chief:SUNShuExecutiveEditors:CHENYongMAZongjinOUYANGZiyuanSUJilanSUNHonglieWANGPinxianZHOUXiuii
简介:Radio-frequencyinterference(RFI)affectsgreatlythequalityofthedataandretrievalproductsfromspace-bornemicrowaveradiometry.AnalysisoftheAdvancedMicrowaveScanningRadiometerontheEarthObservingSystem(AMSR-E)AquasatelliteobservationsrevealsverystrongandwidespreadRFIcontam-inationsontheC-andX-banddata.Fortunately,thestrongandmoderateRFIsignalscanbeeasilyidentifiedusinganindexonobservedbrightnesstemperaturespectrum.ItistheweakRFIthatisdiffi-culttobeseparatedfromthenaturesurfaceemission.Inthisstudy,anewalgorithmisproposedforRFIdetectionandcorrection.Thesimulatedbrightnesstemperatureisusedasabackgroundsignal(B)andadepartureoftheobservationfromthebackground(O-B)isutilizedfordetectionofRFI.ItisfoundthattheO-Bdeparturecanresultfromeitheranaturalevent(e.g.,precipitationorflooding)oranRFIsignal.AseparationbetweenthenatureeventandRFIisfurtherrealizedbasedonthescatteringindex(SI).ApositiveSIindexandlowbrightnesstemperaturesathighfrequenciesindicateprecipitation.IntheRFIcorrection,arelationshipbetweenAMSR-Emeasurementsat10.65GHzandthoseat18.7or6.925GHzisfirstdevelopedusingtheAMSR-EtrainingdatasetsunderRFI-freeconditions.ContaminationofAMSR-Emeasurementsat10.65GHzisthenpredictedfromtheRFI-freemeasurementsat18.7or6.925GHzusingthisrelationship.ItisshownthatAMSR-EmeasurementswiththeRFI-correctionalgorithmhavebetteragreementwithsimulationsinavarietyofsurfaceconditions.
简介:Anewfairoff-lineelectroniccashschemeonellipticcurvecryptographywaspresented.Thenewschemeismoreefficientthanthosebyextendingfairoff-lineelectroniccashschemefromfinitefieldintoellipticcurvecryptographyandintroducinganewellipticcurvediscretelogarithmassumption.Theexpirydateanddenominationareembeddedintotheblindlysignedcoinbyintegratingpartiallyblindsignaturewithrestrictiveblindsignature.Abankneednotusedifferentpublickeysfordifferentcoinvalues,shopsandusersneednotcarryalistofbank'spublickeystoverifyintheirelectronicwallet.Atthesametime,thebankjustneedstokeepundueelectroniccoinsfordoublespendingcheckinhisdatabase,thusbank'sdatabasecanbedramaticallyreduced.