OriginW.DiffieandM.Hellmanpublishedanarticle"NewDirectioninCryptography"inIEEETrans.onInformationin1976,andproposedthat"asymmetriccryptographyispublicTheconceptof"keycryptosystem"hascreatedanewdirecti...

Overviewreferstothecompositionratioofvariousassetsinacompany’sinvestment,mainlyreferstotheratiooffixedinvestment,securitiesinvestmentandliquidityinvestment.Somecompanieshavetheproblemofinsufficientliq...

IntroductionHuainanRoadbelongstothenameofasupervisoryareaintheSuiandTangDynasties.IntheearlyTangDynasty,itwasasupervisoryagencyandaninformaladministrativeagency.AftertheAnshiRebellion,localseparatisme...

HistoricalevolutionThefifthsetofRMBhas8denominations:100yuan,50yuan,20yuan,10yuan,5yuan,1yuan,5yuan,and1yuan.Thefifthsetofrenminbi,basedonthefactthatthemaincurrencyoflowandmediumdenominationsinthemark...

BasicinformationHistoricalevolutionInNovember1952,theCentralPeople’sGovernmentAdministrationCouncilapprovedtheestablishmentofBeijingPetroleumInstitute.In1953,inordertosupporttheeconomicconstructionand...

MainbackgroundTheoriginofuniversityrankingscanbetracedbackto1870.TheannualreportoftheFederalBureauofEducationranksuniversitiesbasedonthedatatheyhave.Themodernuniversityrankingswerepublishedin1983by"U....

BasicinformationHistoricalevolutionLateQingDynastySoutheastUniversityoriginatedinSanjiang,whichwasfoundedin1902Normalschool,underneaththeschoolistheDepartmentofPhysicsandChemistry(hereinafterreferredt...

DefinitionVirtualhosting,alsocalled"websitespace",istodivideaphysicalserverrunningontheInternetintomultiple"virtual"servers.Virtualhosttechnologyhasgreatlypromotedtheapplicationandpopularizationofnetw...

IntroductionThemillimeterwaveradarworksinthemillimeterwaveband.Usuallymillimeterwavereferstothe30-300GHzfrequencyband(wavelengthis1-10mm).Thewavelengthofmillimeterwaveisbetweencentimeterwaveandlightwa...

CountingsystemBaseThecountingsystematthebaseb(wherebisApositivenaturalnumberiscalledabase),andbbasicsymbols(ornumbers)correspondtothesmallestbnaturalnumbersincluding0.Togenerateothernumbers,thepositio...

IntroductionThemostcommonlyusedsubstratematerialforintegratedcircuitdesignissilicon.Thedesignerwillusetechnicalmeanstoelectricallyisolatethevariousdevicesonthesiliconsubstratefromeachothertocontrolthe...

HistoryofdevelopmentTheoldnameispassinspection,inspectionpreparationorintroduction.Thebasicunitofcompositionistheindexentry.Theentrygenerallyincludesthreeitems:index,descriptionorannotation,andsource....

HistoryEarlycivilizationMainentry:Eland、MediElandandMedesperiod(2700BC-553BC)ElamandMedesarenotyetcalledPersiabytheGreeks,buttheyarethehistoryofthePersianregionAnindispensablepartofit.Elamisoneoftheo...

Synonymnetworkcomputinggenerallyreferstometa-computingResearchbackgroundandsignificanceSincethefirstelectroniccomputercameoutin1946,computerscienceandtechnologyhaveundergonetremendouschanges.Thedevelo...

IntroductionSemiconductorswitchingelementscontrolledbyelectricalsignalsthatcanperformlogicoperations,alsoknownasgatecircuits.Itisanewtypeofautomationcomponentdevelopedonthebasisofinverters,flip-flops,...

BasisIndividualdifferencesExercisersvaryinage,gender,physicalcondition,exerciseneeds,etc.,eveniftheaboveconditionsareallSimilarpeoplewillalsohavedifferencesintheexerciseprocessduetotheadaptabilityofth...