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简介：Thesignalprocessingcircuitsofpositionsensitivedetector(PSD)withalternatinglightsourcearepresented.ThemeasuringdeviceofPSDwithalternatinglightsourcecaneffectivelyeliminatetheinterferencemadebylightnoisesignal.

简介：为有限的组的数量c(G)，q(G)和p(G)被H定义。Behravesh。在这篇文章，为轮流出现的这些数量组织一and对称的组Sn被计算。它被看那c(G)=q(G)=p(G)=n，当时G=orSn。给词调音：伪排列代表；轮流出现的组；对称的组；特性理论

简介：AnexperimentalapparatustoinvestigateACMHDpumpwasestablished,whichmainlyconsistsofarotarypermanentmagnetwith4polesanannularchannel,amotor,ashaftandaplatform.Themagnetgeneratesafieldsimilartosinusoidwiththemaximumof0.9TinthechannelwhenitisrotatedupbythemotortosimulateanACmagneticfield.Thismovingmagneticfieldactsontheconductivefluidinthechannel,andproducesanelectromagneticforcetomovethefluidinthesamedirectionasthatofthemagnetrotating.Experimentswerecarriedouttoinvestigatetheperformanceofthepump.Flowvelocityintheannularchannelwasmeasuredfordifferentconductivitiesandrotatingspeedsofthemagnet.Theresultsshowthattheflowrateandpressureincreaseasthemagneticfieldstrength,fluidconductivityandfrequencyofthemagneticfieldincrease.

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简介：InthispapertheSchwarzalternatingmethodforafourth-orderellipticvariationalinequalityproblemisconsideredbywayoftheequivalentform,andthegeometricconvergenceisobtainedontwosubdomains.

简介：Consideringtheefectsofosmoticpressure,elasticbending,Maxwellpressure,surfacetension,aswellasfexo-electricanddielectricpropertiesofphospholipidmembrane,theshapeequationforspherevesicleinalternation(AC)electricfeldisderivedbasedontheliquidcrystalmodelbyminimizingthefreeenergyduetocoupledmechanicalandACelectricalfelds.Besidestheefectofelasticbending,theinfuenceofosmoticpressureandsurfacetensiononthefrequencydependentbehaviorofvesiclemembraneinACelectricfeldisalsodiscussed.Ourtheoreticalresultsformembranedeformationareconsistentwithcorrespondingexperiments.Thepresentmodelprovidesthepossibilitytofurtherdisclosethefrequency-dependedbehaviorofbiologicalcellsinthecoupledACelectricanddiferentmechanicalfelds.

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简介：INTRODUCTIONThealternatingaccesstransportermodel(AATM)wasinitiallyconstructedtorationalizeandexplainafewreadilyquantifiableandreproducibleexperimentalfindings.TheAATM,asoriginallyconceived,consistsofsinglespecificbindingsitecentrallysituatedwithinthecellmembrane.Thesitealternatelyfacesinwardsandoutwards.Duringtheinversionprocess,thesitecantransportsugaracrossthemembrane,anddissociationintothealternatebathingsolutionresultsinnettransport.ReturnoftheemptysitereinitiatesthetransportcycleasillustratedinFig.1A.Glucosetransport,whichwasdemonstratedfirstinhumanredcells(LeFevreandLeFevre1952)andsheepplacenta(Widdas1951),hashighstereospecificityforD-pyranosesugars,likeD-glucoseandD-xyloseinpreferencetoL-sugars,e.g.L-fructoseornon-transportedL-glucose.Thistransportprocesshassimilaritiestoenzymekinetics:bothhavesaturationkinetics,theKmbeingtheconcentrationatwhichhalfmaximaltransportvelocity,Vmaxobtained,isameasureofapparentaffinityofligandforthetransporter(Fig.1B).Theprocessispassiveinthehumanredcell,sinceatequilibriumtheglucoseconcentrationsintheextraandintracellularsolutionsarethesame;i.e.netuphillaccumulationdoesnotoccur.

简介：为奥本海姆系列epansions，作者[7]讨论了非凡的集合B_m={x∈(0，1]：1<(d_j(x))/(h_(j-1)(d_(j-1)(x)))为任何j≥的≤m2}。在这篇论文，我们调查发生在alternatingOppenheim系列扩大的一种非凡的集合的Hausdorff尺寸。作为应用，我们得到集合inLueroth系列扩大的准确Hausdorff尺寸，也，我们给如此的维的数字的估计。

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简介：Thispaperisconcernedwithsomenonlinearreaction-diffusionmodels.Tosolvethiskindofmodels,themodifiedLaplacefiniteelementschemeandthealternatingdirectionfiniteelementschemeareestablishedforthesystemofpatricaldifferentialequations.Besides,thefinitedifferencemethodisutilizedfortheordinarydifferentialequationinthemodels.Moreover,bythetheoryandtechniqueofpriorestimatesforthedifferentialequations,theconvergenceanalysesandtheoptimalL2-normerrorestimatesaredemonstrated.

简介：Anewalternatingdirection(AD)finiteelement(FE)schemefor3-dimensionalnonlinearparabolicequationandparabolicintegro-differentialequationisstudied.ByusingAD,the3-dimensionalproblemisreducedtoafamilyofsinglespacevariableproblems,calculationworkissimplified;byusingFE,highaccuracyiskept;byusingvarioustechniquesforprioriestimatefordifferentialequationssuchasinductivehypothesisreasoning,thedifficultyarisingfromthenonlinearityistreated.ForbothFEandADFEschemes,theconvergencepropertiesarerigorouslydemonstrated,theoptimalH1-andL2-normspaceestimatesandtheO((△t)2)estimatefortimevariableareobtained.

简介：Cobaltporphyrincomplexes(TPPCo~ⅢX)(TPP=5,10,15,20-tetraphenyl-porphyrin;X=halide)incombinationwithbis(triphenylphosphine)iminiumchloride(PPNCl)wereusedforthecopolymerizationofcyclohexeneoxideandCO_2.Thehighestturnoverfrequencyof67.2h~(-1)wasachievedafter13hat20℃,andtheobtainedpoly(1,2-cyclohexylenecarbonate)(PCHC)showednumberaveragemolecularweight(M_n)of10×10~3.ThoughtheobtainedPCHCshowedatacticstructure,them-centeredtetradscontentreached58.1%atCO_2pressureof1.0MPa,anddecreasedto51.9%atCO_2pressureof6.0MPa,indicatingthatitwasinclinedtoformatacticpolymerathighCO_2pressure.

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简介：Byusingthecoupledclustermethodandthenumericaldensitymatrixrenormalizationgroupmethod,weinvestigatethepropertiesofthequantumplateaustateinanalternatingHeisenbergspinchain.Intheabsenceofamagneticfield,theresultsobtainedfromthecoupledclustermethodanddensitymatrixrenormalizationgroupmethodbothshowthatthegroundstateofthealternatingchainisagappeddimerizedstatewhentheparameterαexceedsacriticalpointαc.Thevalueofthecriticalpointscanbedeterminedpreciselybyadetailedinvestigationofthebehaviorofthespingap.Thesystemthereforepossessesanm=0plateaustateinthepresenceofamagneticfieldwhenα>αc.Inadditiontothem=0plateaustate,theresultsofdensitymatrixrenormalizationgroupindicatethatthereisanm=1/4plateaustatethatoccursbetweentwocriticalfieldsinthealternatingchainifα>1.Themechanismforthem=1/4plateaustateandthecriticalbehaviorofthemagnetizationasoneapproachesthisplateaustatearealsodiscussed.

简介：Becausethelargermetallicsurroundsareheatedbytheeddycurrent,whichisgeneratedbytheACcurrentflowingthroughtheACbusbarintheInternationalThermonuclearExperimentalReactor(ITER)poloidalfield(PF)convertersystem,shieldingoftheACbusbarisrequiredtodecreasethetemperatureriseofthesurroundstosatisfythedesignrequirement.ThreespecialtypesofACbusbarwithnaturalcooling,aircoolingandwatercoolingbusbarstructurehavebeenproposedandinvestigatedinthispaper.Foreachcoolingscheme,a3Dfinitemodelbasedontheproposedstructurehasbeendevelopedtoperformtheelectromagneticandthermalanalysistopredicttheiroperationbehavior.Comparingtheanalysisresultsofthethreedifferentcoolingpatterns,watercoolinghasmoreadvantagesthantheotherpatternsanditisselectedtobethethermaldissipationpatternfortheACbusbarofITERPFconverterunit.TheapproachtoqualifythesuitablecoolingschemeinthispapercanbeprovidedasareferenceonthethermaldissipationdesignofACbusbarintheconvertersystem.

简介：LetKbeaproperconeinR~x,letAbeann×nrealmatrixthatsatisfiesAK(?)K,letbbeagivenvectorofK,andletλbeagivenpositiverealnumber.Thefollowingtwolin-earequationsareconsideredinthispaper:(i)(λⅠ_n-A)x=b,x∈K,and(ii)(A-λⅠ_n)x=b,x∈K.Weobtainseveralequivalentconditionsforthesolvabilityofthefirstequation.For

简介：Forthetransientbehaviorofasemiconductordevice,themodifiedmethodofcharacteristicswithalternating-directionfiniteelementproceduresfornonrectangularregionisputforward.Sometechniques,suchascalculusofvariations,isoparametrictransformation，patchapproximation,operator-splitting,characteristicmethod,symmetricalreflection,energymethod,negativenormestimateandapriorestimatesandtechniques,areemployed.Inthenonrectangularregioncase,optimalorderestimatesinL^2normarederivedfortheerrorintheapproximationsolution.Thusthewell-knowntheoreticalproblemhasbeenthoroughlyandcompletelysolved.