简介：Opticalspinsplittinghasattractedsignificantattentionowingtoitspotentialapplicationsinquantuminformationandprecisionmetrology.However,itistypicallysmallandcannotbecontrolledefficiently.Here,weenhancethespinsplittingbytransmittinghigher-orderLaguerre–Gaussian(LG)beamsthroughgraphenemetamaterialslabs.TheinteractionbetweenLGbeamsandmetamaterialresultsinanorbital-angularmomentum-(OAM)dependentspinsplitting.TheupperboundoftheOAM-dependentspinsplittingisfound,whichvarieswiththeincidentOAMandbeamwaist.Moreover,thespinsplittingcanbeflexiblytunedbymodulatingtheFermienergyofthegraphenesheets.Thistunablespinsplittinghaspotentialapplicationsinthedevelopmentofspin-basedapplicationsandthemanipulationofmid-infraredwaves.

简介：Combinedwiththeanalysisofcharacteristicsofthecommunicationindustryandthesustainabledevelopmentrequirementsoftheenterprise,consideringthecurrentandthelong-termdevelopmentandtheexternalstakeholderinterestoftheenterprise,thesustainabledevelopmentindexsystemoftelecomoperatorwasconstructedincludingoperationmanagementability,innovationdevelopmentabilityandstrategyleadingability.Takingatelecomoperatoranditssubsidiaryasanexample,theindexsystemwasdesignedandthedesignelementsandassessmentrequirementswerealsopresentedclearly.Theevaluationandanalysisoftheindexcanhelpenterpriseseffectivelyidentifythekeyshortcomingsofsustainabledevelopment,andbetterimprovethesustainabledevelopmentability.

简介：Inanabstractsetup,wegetstrongtypeinequalitiesinL~(p+1)byassumingweakorextra-weakinequalitiesinOrliczspaces.Forsomeclassesoffunctions,thenumberpisrelatedtoSimonenkoindices.WeapplytheresultstogetstronginequalitiesformaximalfunctionsassociatedtobestΦ-approximationoperatorsinanOrliczspaceL~Φ.

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简介：Directphotontochemicalenergyconversionusingsemiconductor–electrocatalyst–electrolyteinterfaceshasbeenextensivelyinvestigatedformorethanahalfcentury.Manystudieshavefocusedonscreeningmaterialsforefficientphotocatalysis.Photocatalyticefficiencyhasbeenimprovedduringthisperiodbutisnotsufficientforindustrialcommercialization.Detailedelucidationonthephotocatalyticwatersplittingprocessleadstoconsecutivesixreactionstepswiththefundamentalparametersinvolved:Thephotocatalysisisinitiatedinvolvingphotophysicsderivedfromvarioussemiconductorproperties(1:photonabsorption,2:excitonseparation).Thegeneratedchargecarriersneedtobetransferredtosurfaceseffectivelyutilizingtheinterfaces(3:carrierdiffusion,4:carriertransport).Consequently,electrocatalysisfinishestheprocessbyproducingproductsonthesurface(5:catalyticefficiency,6:masstransferofreactantsandproducts).Successfulphotocatalyticwatersplittingrequirestheenhancementofefficiencyateachstage.Mostcritically,afundamentalunderstandingoftheinterfacialphenomenaishighlydesiredforestablishing'photocatalysisbydesign'concepts,wherethekineticbottleneckwithinaprocessisidentifiedbyfurtherimprovingthespecificpropertiesofphotocatalyticmaterialsasopposedtoblindmaterialscreening.Theoreticalmodelingusingtheidentifiedquantitativeparameterscaneffectivelypredictthetheoreticallyattainablephoton-conversionyields.Thisarticleprovidesanoverviewofthestate-of-the-arttheoreticalunderstandingofinterfacialproblemsmainlydevelopedinourlaboratory.Photocatalyticwatersplitting(especiallyhydrogenevolutiononmetalsurfaces)wasselectedasatopic,andthephotophysicalandelectrochemicalprocessesthatoccuratsemiconductor–metal,semiconductor–electrolyteandmetal–electrolyteinterfacesarediscussed.

简介：Anovelslottedopticalmicrodiskresonator,whichsignificantlyenhanceslight–matterinteractionandprovidesapromisingapproachforincreasingthesensitivityofsensors,istheoreticallyandnumericallyinvestigated.Inthisslottedresonator,themodesplittingisgeneratedduetoreflectionoftheslot.Remarkably,effectsoftheslotwidthandangularpositiononthemodesplittingaremainlystudied.Theresultsrevealthatthemodesplittingisasecondfunctionoftheslotwidth,andthemaximummodesplittinginducedbytheslotdeformationisachievedwith2.7853×109Hz∕nm.Therefore,theslottedresonatorisanexcellentcandidateforpressureandforcesensing.Besides,theinfluenceoftheslotangularpositiononthemodesplittingisacosinecurvewiththehighestsensitivityof1.23×1011Hz∕deg;thus,theopticalcharacteristicdemonstratesthattheslottedresonatorcanbeusedforinertialmeasurements.

简介：Let?befullLaplacianonH-typegroupG.ThenforeverycompactsetD■G,alocalestimateoftheSchr¨odingermaximaloperatorholds,thatis,∫_(D)sup|e~(it?)f(x)|~2dx■||f||_(H~s)~2,s>1/2.Wealsoshowthattheaboveinequalityfailswhens<1/4.

简介：量远距传物提供从一个目标把量状态传给另外一个的一个无形体的方法，在一个远地点，用一条古典通讯隧道和一个以前分享的纠缠的状态。在这份报纸，我们在场为一个任意的单个qubit状态的概率的远距传物的一个分成三部分的计划，没有失去状态的信息，是teleported，经由表格|的一个fourqubit簇状态>1234=|0000>+|1010>+|0101>-|1111>,作为量隧道非零实数，，，并且满足关系jj2+||2+||2+||2=1。与有州的|的辅助qubit的介绍0>用合适的单一的转变和一项积极操作员的珍视的措施(POVM)，接收装置能再创造原来的qubit的状态。远距传物计划的一个重要优点证明这是如果远距传物失败，没有未知的量状态的teleporting拷贝，它能被重复，如果担心的聚会分享另一纠缠的qubit。我们也为作为量隧道经由上述的簇状态和一个钟状态一个任意的二粒子的系统切开的量信息介绍一个协议。与安全攻击有关的问题被检验因为格和它被发现那这个协议是安全的。这个协议高度有效、容易实现。

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简介：LetT_1beasingularintegralwithnon-smoothkernelor±I,letT_2andT_4bethelinearoperatorsandletT_3=±I.DenotetheToeplitztypeoperatorbyT~b=T_1M~bI_αT_2+T_3I_αM~bT_4,whereM~bf=bf,andI_αisthefractionalintegraloperator.Inthispaper,weinvestigatetheboundednessoftheoperatorT~bontheweightedMorreyspacewhenbbelongstotheweightedBMOspace.

简介：基于观察员的适应滑动模式的问题与易于输入非线性的变化时间的延期三角洲控制操作符系统被调查。这非线性的斜坡参数是无节制的。一条新奇适应控制法律被建立以便在州评价的空间的滑动表面能在一有限时间被到达。A延期依赖者足够为错误系统和滑动模式动力学的asymptotic稳定性调节经由线性矩阵不平等(LMI)被导出。最后，一个模拟例子被举显示出建议方法的有效性和优点。

简介：TheEarth’ssustainabledevelopmentisthreatenedbytheincreasingatmosphericCO2levelwhichcanbeattributedtotheimbalanceofCO2duetotherapidconsumptionoffossilfuelscausedbyhumanactivitiesandtheslowabsorptionandconversionofCO2bynature.OneoftheefficientmethodsforreconstructingthebalanceofCO2shouldinvolvetherapidconversionofCO2intofuelsandchemicals.ThehydrogenationofCO2withgaseoushydrogeniscurrentlyconsideredtobethemostcommerciallyfeasiblesyntheticroute,however,thesupplyofsafeandeconomicalhydrogensourcesposesasignificantchallengetoup-scalingapplication.Directutilizationofhydrogenfromdissociationofwater,themostabundant,cheapandcleanhydrogenresource,forthereductionofCO2wouldbeoneofthemostpromisingapproachesforCO2utilization.ThispaperprovidesanoverviewofthecurrentadvancesinresearchonhighlyefficientreductionofCO2orNaHCO3,arepresentativecompoundofCO2,intoformicacid/formatebyinsituhydrogenfromwaterdissociationwithametal/metaloxideredoxcycleundermildhydrothermalconditions.