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1 Introduction Assetsservicesaretheservicesthathandlefund .Financialorganizationsrealizebusinessopera tionbyturningthefundsabsorbedintoeconomicre sultsthroughassetsservices.Becauseofitsnetworkandcredit,thesavingsdepositabsorbedby postmustbehandledeffect… 相似文献
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1 IntroductionThereiscurrentlyasignificantinterestinthedesignofhigh ratewirelessCodeDivisionMultipleAccess (CDMA)networks[1 ,9~1 0 ] .InthisCDMAsystem ,eachuserisassignedauniquesignaturewaveformthatisusedtomodulateitstransmittedsymbols.Itis,however,notpossiblet… 相似文献
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1 IntroductionTheproblemofusinganantennaarraytoesti matethetimedelaysisimportantinthewirelesscommunicationsystem .Insuchasystem ,multipathtransmissionphenomenonexistsandcancauseseveresignalfading .Estimationofthemultipathdelays,aswellasthespatialsignatur… 相似文献
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1 IntroductionInthepastthirtyyears,randomaccesstech niqueshavewidelybeenappliedinsatellitesystems,groundradionetworks,andcomputerandcommuni cationsystems.TheoriginalrandomaccessschemewasALOHAsystemwhichwasintroducedbyAbramsonin 1 970 .Thissystemschemewassim… 相似文献
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1 IntroductionVegasystem ,asarenderingdrivensoftwareplatform ,hasbeenwidelyusedinsystemsimulationandvirtualreality .ItismainlyusedintheUNIXplatform .BecauseoftheeasyuseandapplicationneedoftheWindowsNT ,thesystemofVegahasalsobeentransplantedtoWindowsNTfrom… 相似文献
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1 IntroductionTSPisoneofthemostdifficultproblemsthatmanyscholarsallovertheworldhavebeenstudyinguptonow .ThebasicdescriptionofthisproblemwhichwasproposedbyK .Mengerfirstlyis:Atrav ellingsalesmanwishestovisitanumberoftowns,thetravellingdistancesbetweentown… 相似文献
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1 IntroductionRecentresearchhasidentifiedcomposability ,extensibility ,andtailorabilityaskeyaspectsofsys temsthatsupport groupsofinteracting people.Component baseddesignisameanstoachievetheserequirementsin groupwaresystems.Meanwhile,component baseddesignofs… 相似文献
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Thesensingmodelofdetectingsystemisusuallycomplicate(sometimescannotex-pressedmathematically).Thismakesitverydiffculttoobtainquicksolutionandrealtimedetecting.Thepapertakestheposewarpopticfibersensorofrobotscrewflexibleassemblyasanexample,andintroduce… 相似文献
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1 IntroductionMultipleaccessinginthecodedomainisachievedbyspreadingthespectrumofthetransmit tedsignalsusingpreassignedcodeinformation .Sinceitisnotpossibletodesignsignaturesequenceforanypairofusersthatareideallyorthogonal,theinter ferencefromtheotheruse… 相似文献
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1 IntroductionInrecent yearsreal timedatabaseshaveoccurredinmanyimportantapplicationsincludingairlinereservation ,banking ,andstockmarketsys tems .Real timedatabaseshavetodealwithmanyofthesameissuesasgeneral purposedatabases.Fur thermore,queriestothedatabas… 相似文献
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1 IntroductionThemultiple phase shiftefiberBragggratingisakindoffiberBragggrating .ItisdifferentfromtheclassicuniformBragggratinginthatithassometransmissionnotchesinthereflectionbandofthespectralresponsefilter.Atransmissionbandoflessthan 1 0pmcanthusbeobt… 相似文献
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1 IntroductionTheexplosivegrowthofInternettraffichasim posedtremendousstressontoday srouters,howtoimplementhighspeed ,scalableandlargeprocessingcapabilitywhileprovidinggoodserviceshasbecomethekeyissuetodesignmodernrouterfacilities.La bel switchingtechnol… 相似文献
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1 IntroductionAsisknown ,therearevarioussystemsoffuzzylogic[1~2 ] .ThemostpopularoneisbasedonZadeh’sfuzzysetoperators.ThereafterwewilldenotethissystemasZadeh’sFuzzyLogic(ZFL) .Anewsys temwas proposed[3~ 5] whichiscalledMeasure BasedFuzzyLogic(MBFL) .Itisfoundedont… 相似文献
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1 IntroductionMultiple AccessInterference (MAI)owingtomanysimultaneoususersconstitutesthemainlimita tionofDS CDMAsystems .MultiuserdetectiontechniquescanefficientlysuppressMAIandsub stantiallyincreasethecapacityofCDMAsystems.Variousmultiuserdetectionschem… 相似文献
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1 IntroductionWhenarouterforwardsapacketinconvention alnetworks,itonlyusesfewsystemresources ,forexample,ituseslittlememoryresourcestotem porarilystorethispacketandfewCPUresourcestosearchforwardingrouteandprocessIPoptionpa rameters.Comparedtoconventional… 相似文献
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1 IntroductionMultiresolutionsignalprocessingisbecomingmorepopularincommunicationandinformationpro cessingfieldsbecauseofitsfineproperty ,especiallyinimagecoding .Itsplitsasignalintoseveralsub bandsignalswithdifferentbandwidthstoutilizethecharacterdiffe… 相似文献
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WUGui-lin LIUQing 《电子显微学报》2002,21(5):705-706
IntroductionElectronback scatteredpattern (EBSP)analysisinthescanningelectronmicroscopeasatoolforinvestigatingmicrostructurehasbeenwellestablished .Thistechniquehasmanyadvantagesovertransmissionelectronmicroscopy .Adrawbackofthistechniqueistheangularreso… 相似文献
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1 IntroductionRecently,intenseinteresthasbeenfocusedonmodulationtechniques,whichcan providebroad bandtransmissionoverwirelesschannelsforapplica tionsincludingwirelessmultimedia ,wirelessInter netaccess,andfuture generationmobilecommuni cationsystems .OFDM[1~… 相似文献
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1 IntroductionDisparityestimation ,namely ,stereomatching ,isthekeytostereovisionandstereoimagecompres sion .Fortheproblemofscenereconstructionusingstereoimages,theprecisionofestimateddisparitydeterminesthedegreeoftruthfulnessofreconstruct edobjects.Moreov… 相似文献
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Softwareradio ,togetherwithdigitalradioasitsbasis,hasbeenthetrendstodevelopmentinwirelesscommunications.Digitalradiofocusesonall digitalizationtechniquesandmodularizationmethodsincommunicationsystems,whilesoftwareradiopaysmoreattentiontoall digialtizedr… 相似文献