简介：Alongwithnecessariesappliedandthegoingdeeplyintotheresearch,thattheuni-tarymatrixandHermitematrixarepopularizedinmanykinds,andinthispaperuni-versalunitarymatrixanduniversal（oblique）Hermitematrixarestudiedfurther,andthismustbeusefulformatrixtheoryandapplications（likeoptimizationtheory,symplecticgeometryandphysicsetc）.Inthepaper,Cm×nshowsm×ncompoundmatrixset,Cnm×nshowsnstepcompoundinvertiblematrixset,A*showsconjugatetransposematrixofA,

简介：ＵｎｉｖｅｒｓａｌＳｐｅｃｔｒａｌＭｏｄｕｌａｔｉｏｎＳｅｎｓｏｒｓ：（Ⅱ）Ａｐｐｌｉｃａｔｉｏｎｓ①ＳＨＩＹｏｎｇｊｉ（ＬｕｏｙａｎｇＴｅｃｈｎｏｌｏｇｙＣｏｌｅｇｅ，Ｌｕｏｙａｎｇ４７１００３，ＣＨＮ）Ａｂｓｒｔａｃｔ：Ｉｎｐａｒｔ（Ⅰ），ｔｈｅ...

简介：Compositionistheoperationofreplacingvariablesinapolynomialwithotherpolynomials.Themainquestioninthispaperis:whendoescompositioncommutewithuniversalGroebnerbasiscomputation?Weprovethatthishappensiffthecompositionissinglevariable.ThishasanaturalapplicationinthecomputationofuniversalGroebnerbasesofcomposedpolynomials.

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简介：ThispaperaimsatstudyingtherelationshipbetweenuniversaltelecommunicationserviceandWestChinadevelopment.It,firstly,introducesourcountry'sdemandsforuniversaltelecommunicationservice;secondly,analysesthedemandofWestChinadevelopmentfortheuniversaltelecommunicationservice;thirdly,depictsthedevelopmentstatusoftelecommunicationindustryofthewestregion;fourthly,pointsoutthesignificanceofuniversaltelecommunicationservicetothewestarea;andlastly,bringsforwardtheconnotationofuniversaltelecommunicationserviceofwestarea.

简介：Thepurposeofthispaperistopresentsomedualpropertiesofdualcomodule.Itturnsoutthatdualcomodulehasuniversalproperty(cf.Theorem2).Since(()*,()°)isanadjointpair(cf.Theorem3),somenicepropertiesoffunctor()°areobtained.FinelyTheoram4providesthatthecotensorproductisthedualofthetensorproductby(MAN)°≌M°□A.N°.Moreover,theresultHomA(M,N)≌Coma.(N°,M°)isprovedforfiterelatedmodulesM,NoverarefiexivealgebraA.

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简介：ＵｎｉｖｅｒｓａｌＳｐｅｃｔｒａｌＭｏｄｕｌａｔｉｏｎＳｅｎｓｏｒｓ：（Ⅰ）ＴｈｅｏｒｙａｎｄＳｔｒｕｃｔｕｒｅ①ＳＨＩＹｏｎｇｊｉ（ＬｕｏｙａｎｇＴｅｃｈｎｏｌｏｇｙＣｏｌｅｇｅ，Ｌｕｏｙａｎｇ４７１００３，ＣＨＮ）Ａｂｓｔｒａｃｔ：Ａｕｎｉｖｅｒ...

简介：Thispaperstudiestheproblemofmakinganarbitrarydiscretesystemchaotic,orenhancingitsexistingchaoticbehaviors,bydesigningauniversalcontroller.Theonlyassumptionisthatthearbitrarilygivensystemhasaboundedfirstderivativeina(small)regionofinterest.

简介：Accordingtothetheoryoftestingasphericalsurfacebynormalaberrationcompensationmethod,thedesigningmethodofquasi-universalcompensatorisstudied.Onthebasisofthird-orderaberrationtheory,aftercalculatingandoptimizingwithanopticaldesignprogram,thestructureparametersofacompensatorareobtained.ThisnewcompensatorcouldbeusedinTwyman-Greeninterferometer,andinmeasurementofacertainrangeofparaboloidellipsoidandhyperboloid.Thecompensationaccuracyismorethan0.02λ.

简介：ThemodeloftheuniversalTeichmullerspacebythederivativesoflogarithmistheunionofinfinitedisconnectedcomponents.Inthispaper,thefactthateachcomponentisnotstarlikewithrespecttoitscenterisproved,andtheouterradiusofthespacewithrespecttoeachcenterisobtained.

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简介：Inthispaper,westudytheexistenceof0-1universalminimaltotaldominatingfunctionsinagraph.Weestablishaformulationoflinearinequalitiestocharacterizeuniversalminimaltotaldominatingfunctionsandshowthatforakindofgraphswhoseadjacentmatricesarebalanced,theexistenceofuniversalminimaltotaldominatingfunctionscoincideswiththatof0-1ones.Itisalsoprovedthatforgeneralgraphs,theproblemoftestingtheexistenceof0-1universalminimaltotaldominatingfunctionsisNP-hard.

简介：Basedonmulti-module-cascadedinvertertopology,thisstudypresentedauniversalmultilevelinverterhybridtopologyandunifiedtheresearchesonmultilevelinvertertopology.Accordingtothefreedomofthisuniversaltopology,severalnewhybridtopologieswereconstructed.Also,basedonconventionalmodulationstrategies-multi-carrierSPWM(SinusoidalPulseWidthModulation),hybridmodulationstrategieswereintroducedcorrespondingtohybridtopologies,andamultilevelSVPWM(SpaceVectorPulseWidthModulation)techniquebasedonphase-shiftedtheorywasnaturallyproduced.Simulationandexperimentresultsprovethathybridtopologiesandcorrespondingmodulationstrategiesarevalid,whichlayafoundationforpracticalapplicationofhybridmultilevelinvertertopologies.

简介：ThispaperobtainstheCauchy-PompeiuformulaoncertaindistinguishedboundaryforfunctionswithvaluesinauniversalCliffordalgebra.ThisformulaisjustanextensionoftheCauchy'sintegralformulaobtainedin[11].

简介：ByA.PeresandA.Stern'sopinionsacomputationalprocessevolvesalongacycliclogicorbitdefinedbyacomputation.A.Sternthoughtthatifwecoulddesignsuchacircuit,itsoperationscanbeextendedtoincludingnonconservativebehaviorassociatedwiththeexternalperturbationsorinternalquantumerrors.A.PeresdidnotdiscusshowtomakeφM-1＝φo.A.Sternproposedonlyanecessaryconditionforaconservationofastateofaquantumcircuit.Inthispaperwepresentanecessaryandsufficientconditionforauniversalconservationofastateofaquantumcircuit.Wealsofindalloperatorswhichcanallowtheconservation.

简介：Auniversalsimulatorcapableofsimulatingvirtuallyanyuser-definedelectrochemical/chemicalproblemsinone-dimensionaldiffusiongeometrywasdevelopedbasedonanexponentiallyexpandinggridmodificationoftheexistingnetworkapproach.Somegeneralizedreaction-diffusiongoverningequationsofanarbitraryelectrochemical/chemicalprocesswerederived,andprogramcontrolledautomaticgenerationofthecorrespondingPSPICEnetlistfilewasrealized.Onthebasisoftheabovetechniques,auniversalsimulatorpackagewasrealized,whichiscapableofdealingwitharbitrarilycomplexelectrochemical/chemicalproblemswithone-dimensionaldiffusiongeometrysuchasplanardiffusion,sphericaldiffusion,cylindricaldiffusionandrotationaldiskdiffusion-convectionprocesses.Thebuildingofsuchasimulatoriseasyandthusitwouldbeveryconvenienttohaveitupdatedforsimulationsofnewlyraisedelectrochemicalproblems.

简介：1176LN是从流行的UniversalAudio175和176真空管限幅器演化而来．既保留了业界领先的固有优势．又为限幅器制订了一个新的规范。它的晶体管电路提供超一流的声音表现和独特的声音特性．是限幅器技术上的一次重大突破。

简介：Problemsaboutdensityareremarkableinthetheoryofdegreesofunsolvability.Owingtotheirdifficultyfewresultshavebeenobtainedtillnow.Sacks1964showedthatther.e.degreesaredense;Fejer1980showedthatnonbrachingdegreesaredenseinther.e.degrees,thisisthefirstnontrivialdefinablesubsetofthedegreesknowntobedense.