
IntroductionSincethemid-1980s,thedevelopmentofsemiconductormanufacturingtechnologyanditscombinationwithlasertechnologyhasgivenbirthtosemiconductorlaserdiodes,whicharelasersourceswithbothsemiconductora...

TheresearchprocessofthedifferentialanalyzerIn1930,Ph.D.V.BushfromMassachusettsInstituteofTechnologyandHarvardUniversity,withtheassistanceofsomeengineersandtechnicians,trial-producedadifferentialanalyz...

CharacterrelationshipErrorCorrectionCloseErrorCorrectionWifeZhuolinAnerror10960870hasbeenreportedSonDengPufangError420807hasbeenreportedDaughterDengNanError3243415hasbeenreportedDaughterDengLinAnerror...

ScientificresearchexperimentsWithAustralia’spollution-freeresources,naturalandpuremedicinalresources,andthrough18yearsofcosmeticpharmacologyresearch,Rheinlandhasbeencommittedtoproducinghigh-qualityher...

IntroductionThisbookcomprehensivelyandsystematicallydiscussesthebasicprinciples,applicationmethods,newtheoriesanddevelopmenttrendsofurbangeographicinformationsystems,aswellasmanyapplicationsinurbanpla...

BookinformationBooknumber:2019802ISBN:978-7-301-20198-5Author:(UnitedStates)WatsonEdition:1Format:Large32openBinding:flattr>Words:200Thousandsofpages:200Pricing:¥46.00Numberofviews:73Publicationda...

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...