Synonym:Populationstructuregenerallyreferstothecompositionofthepopulation.ConceptThepopulationstructure,alsoknownasthecompositionofthepopulation,referstoaresultobtainedbydividingthepopulationaccording...

CountrynameThecountrynameofQinStatecomesfromplacename.IntheWesternZhouDynasty,QinFeizi,theleaderoftheQinpeople,wasgoodatraisinghorsesfortheZhouroyalfamily.In905BC,QinFeiziwasnamedtotheQinlandbyKingZho...

IntroductionVirginiaCode(alsotranslatedasVergenalCode)istheuseofaseriesofCaesarcodestoformacodeTheencryptionalgorithmofthealphabetisasimpleformofmulti-tablecipher.TheVirginiacipherhasbeeninventedmanyt...

DefinitionQuantitativeAnattributereferstoanattributethatexistsintheformofaquantityandcanthereforebemeasured.Theresultofthemeasurementisexpressedbytheproductofaspecificquantity(calledaunit)andanumber.T...

BasicinformationDefinitionApolysemouswordconsistsofthetermnameandseveralmeanings.Thedescriptioncontentofeachthingwithdifferentconceptualmeaningsunderthesametermnameiscalledthemeaningitem.Thedescriptio...

ThesynonymxDSLgenerallyreferstothexdigitalsubscriberline.ThegeneraltermforvarioustypesofDSL(DigitalSubscribeLine),includingADSL,RADSL,VDSL,SDSL,IDSLandHDSL.xDSLisanewtransmissiontechnologythatusesahig...

CopperwireaccesstechnologyCopperwirebroadbandaccesstechnologyisalsoDSLtechnology,mainlyincludinghighbitratesubscriberdigitalloop(HDSL),asymmetricsubscriberdigitalloop(ADSL)andVeryHighBitRateSubscriber...

ConceptTheswitchinghub,whichcameoutin1990,cansignificantlyimprovetheperformanceofthelocalareanetwork.SwitchinghubsareoftencalledEthernetswitchesorLayer2switches(indicatingthatthisswitchworksatthedatal...

BasicinformationHistoricalevolutionBeforethefoundingofthePeople’sRepublicofChinaFebruary10,1931,RedOneThefirstradiotrainingclassofthearmystartedinXiaobuTown,NingduCounty,JiangxiProvince.In1931,theCent...

IntroductiontosystemcallsBriefintroductionThemainfunctionoftheoperatingsystemistomanagehardwareresourcesandprovidegoodInordertoachievethisgoal,thekernelprovidesaseriesofmulti-kernelfunctionswithpredet...

DevelopmenthistoryConceptdefinitionTheso-called"neo-classicism"firstlyfollowstherationalistviewpointandbelievesthatartmustproceedfromrationalityandrejectthesubjectivethoughtsandfeelingsofartistsEspeci...

Informationflowchart[一)informationdi;r}Whenrapltsimulatescalculations,itisnecessarytoabstractandsimplifytheprocessobjectunderstudy,andtheninputtheinformationonthegraphintothecomputer.Calculatein...

BusinessclassificationanddefinitionForeigneconomicbusinessreferstoeconomiceventsarisingfromtransactionsbetweenenterprisesandotherenterprisesorunits.Forexample,raisingfundsfrominvestorsandpurchasingfro...

Introductiontothemodel1.Modelresearchoccupiesanimportantpositioninthefieldofcommunication.Theresearchactivitiesofexpertsandscholarsareoftencarriedoutonthebasisofthemodeofcommunication.Modeisadescripti...

ThesynonymforTelecom(ChinaTelecom)generallyreferstoChinaTelecomGroupCo.,Ltd.HistoryChinaTelecomwasoriginallycalled"ChinaTelecomMobileCommunicationsPostandTelecommunicationsAdministration".In1995,theen...