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56 个结果
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  • 简介:AMethodforHierarchicalSubbandHDTVSplitting¥FengFan(UniversityofElectronicScienceandTechnologyofChina,Chengdu610054,China)Wang...

  • 标签: video formats TV THREE-DIMENSIONAL SUBBAND CODING
  • 简介:Thesplittingextrapolationisanimportanttechniqueforsolvingmultidimensionalproblems.Inthecasethaterroruh-uhasanasymptoticexpansionofformΣcαh2α,whereα=(α1,…,αs)andhα=h1α1,…hsαs,themethodgivesanapproximationinvolvinglesscomputerstorageandlesscomputationalworkincomparisonwiththeclassicalRichardsonextrapolation.Inthispaperwepresentarecurrenceruleofthesplittingextrapolationanddiscussitsapplicationsinthefieldsofmultipleintegrals,multidimensionalintegralequations,partialdifferentialequationsandsingularperturbationproblems.

  • 标签: SPLITTING EXTRAPOLATION asymptoticexpansion RECURRENCE ALGORITHM MULTIDIMENSIONAL
  • 简介:Toimprovedatacacheperformance,optimizingprogramdatalayoutbydatareorganizationhasbecomeanimportantmethodofdecreasingtheimpactofincreasinggapofspeedbetweenprocessorandmemory.Inthisarticle,astructuresplittingframeworkwithananalysismodelnamedstructurefieldrelationgraph(SFRG)ispresentedtooptimizeprogramdatalayout.TheSFRGcanbeusedtoquantifyrelationshipbetweenfields.Ithelpstofindanoptimallayoutforstructureaswellastheoptimalprogramdatalayout.AndthedatacacheperformanceisimprovedthroughSFRG-basedstructuresplitting.Experimentsshowthatthisframeworkiseffectiveinoptimizingprogramdatalayoutandimprovingtheperformanceofdatacacheandwholeprogram.

  • 标签: 结构框架 布局优化 数据分割 程序数据 缓存性能 优化布局
  • 简介:LetMbeacompactorientable3-manifoldwithMconnected.IfV∪SWisaHeegaardsplittingofMwithdistanceatleast6,thenthe-stabilizationofV∪SWalongMisunstabilized.HenceMhasatleasttwounstabilizedHeegaardsplittingswithdifferentgenera.ThebasictoolisaresultondiskcomplexgivenbyMasurandSchleimer.

  • 标签: 不稳定 距离 劈裂 Heegaard分裂 镇定 络合物
  • 简介:Inthispaper,weconsiderthefollowingopenproblemraisedbyH.Schneiderin1984.Qucstioa[1,Question5.3]:LetA=M-NbeaweakregularsplittingofasingularM-matrix.Doestheineqalityind1(M-1N)≤ind0(A)holdinsomeinterestingcasesevenifp(M-1N)>1?

  • 标签: SPLITTING FROBENIUS SCHNEIDER raised diagonal integer
  • 简介:Opticalspinsplittinghasattractedsignificantattentionowingtoitspotentialapplicationsinquantuminformationandprecisionmetrology.However,itistypicallysmallandcannotbecontrolledefficiently.Here,weenhancethespinsplittingbytransmittinghigher-orderLaguerre–Gaussian(LG)beamsthroughgraphenemetamaterialslabs.TheinteractionbetweenLGbeamsandmetamaterialresultsinanorbital-angularmomentum-(OAM)dependentspinsplitting.TheupperboundoftheOAM-dependentspinsplittingisfound,whichvarieswiththeincidentOAMandbeamwaist.Moreover,thespinsplittingcanbeflexiblytunedbymodulatingtheFermienergyofthegraphenesheets.Thistunablespinsplittinghaspotentialapplicationsinthedevelopmentofspin-basedapplicationsandthemanipulationofmid-infraredwaves.

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  • 简介:Theoxidativesplittingprocessofcis-syn1,3-dimethyluracilcyclobutanedimer(DMUD)inaqueoussolutionwasinvestigatedusingpulseradiolysistechnique.TheresultsindicatedthatDMUDcanbesplittedinto1,3-dimethyluracil(DMU)byOHradicals(OH)andBr2radicalanions(Br2^-),butnotbyazideradicals(N3^).TheoxidativemechanismsthatanH-abstractedfromDMUDforOHoxidativesplittingandanelectrontransferfromDMUDtoBr2-,weresuggested.Relatedkineticparametersweredetermined.

  • 标签: 嘧啶环丁烷二聚物 氧化裂解 电子转移 脉冲辐解作用 实验研究 紫外光
  • 简介:我们报导在硅石切开耳语画廊模式的观察球形的共鸣器。描绘保险丝硅石球形的共鸣器,迅速凋落的纤维逐渐变细联合技术被采用。联合系统由纤维组成与大约2.8微米和保险丝硅石的一条直径逐渐变细有大约143微米的一条直径的球形的共鸣器。由把激光力量注入纤维逐渐变细,有3.7nm的相等的山峰间距的很多座狭窄的吸收山峰被观察在一宽光谱范围。在用形状由另一个代替共鸣器稍微被修改以后,耳语画廊模式在球形的共鸣器切开被观察。在邻近的山峰之间的波长间距是0.32nm,比以前的的小得多。CLC数字O431.2这projec被中国(60277026,90206039)的国家自然科学基础支持

  • 标签: 二氧化硅 球形光学谐振器 回音壁模式 分裂
  • 简介:Inflexiblejob-shopbatchschedulingproblem,theoptimallot-sizeofdifferentprocessisnotalwaysthesamebecauseofdifferentprocessingtimeandset-uptime.Evenforthesameprocessofthesameworkpiece,thechoiceofmachinealsoaffectstheoptimallot-size.Inaddition,differentchoicesoflot-sizebetweentheconstrainedprocesseswillimpactthemanufactureefficiency.Consideringthateachprocesshasitsownappropriatelot-size,weputforwardtheconceptofschedulingwithlot-splittingbasedonprocessandsetuptheschedulingmodeloflot-splittingtocriticalpathprocessasthecore.Themodelcouldupdatethesetofbatchprocessandmachineselectionstrategydynamicallytodetermineprocessingrouteandarrangeproperlot-sizefordifferentprocesses,toachievethepurposeofoptimizingthemakespanandreducingtheprocessingbatcheseffectively.Theexperimentresultsshowthat,comparingwithlot-splittingschedulingschemebasedonworkpiece,thismodeloptimizesthemakespanandimprovestheutilizationefficiencyofthemachine.Italsogreatlydecreasesthemachinedbatches(42%)andreducesthecomplexityofshopschedulingproductionmanagement.

  • 标签: 调度问题 分割 求解 建模 柔性作业车间 加工时间
  • 简介:我们在场切开的Hermitian和skew-Hermitian(HSS)为与non-Hermitian和积极definite/semi-definite矩阵解决大稀少的连续Sylvester方程的重复方法。HSS重复方法的无条件的集中被证明,集中率上的上面的界限被导出。而且到计算花费了的还原剂,我们建立HSS重复方法的不精确的变体并且详细分析它的集中性质。数字结果证明HSS重复方法和它的不精确的变体是为连续Sylvester方程的这个类的有效、柔韧的解答者。[从作者抽象]

  • 标签: SYLVESTER方程 分裂迭代法 埃尔米特 HERMITE 求解效率 迭代方法
  • 简介:Inordertomakeamoreeffectiveuseofthedatafromregionaldigitalseismographnetworksandtopromotethestudyonshearwavesplittinganditsapplicationtoearthquakestressforecasting,SAMsoftwaresystem,i.e.,thesoftwareonsystematicanalysismethodofshearwavesplittinghasbeendeveloped.Thispaperintroducesthedesignaims,systemstructure,functionandcharacteristicsabouttheSAMsoftwaresystemandshowssomegraphicalinterfacesofdatainputandresultoutput.Lastly,itdiscussespreliminarilythestudyofshearwavesplittinganditsapplicationtoearthquakeforecasting.

  • 标签: 系统分析法 软件系统 切向波分裂 地震应力预报
  • 简介:VariationsinshearwavesplittingduringaftershocksoftheLuquanearthquakeinYunnanProvinceBAI-JILI(李白基)(SeismologicalBureauofYunnan...

  • 标签: AFTERSHOCKS SHEAR WAVE SPLITTING stress field
  • 简介:WeobservetheAutler-Townessplittingeffectina△-typequantumthree-levelsystem,usingthelowestthreelevelsofaSQUID-typeAl/AlOx/Altransmonqubitembeddedinathree-dimensionalcoppermicrowavecavity.Acontroltoneatdifferentstrengthsisappliedinresonancewiththetransitionbetweenthefirstandsecondexcitedstates,whilethespectrabetweeneachofthemandthegroundstateareprobedbyanothermicrowavetone.Theexperimentalresuitshowsthedifferencebetweenthetwospectra,andfitswellwiththeLindbladmasterequationmodel.

  • 标签: 三能级系统 量子 分裂型 铝/氧化铝 光谱差异 微波谐振腔
  • 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.

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  • 简介:在这篇论文,我们为在NoC(薄片上的网络)降低通讯的潜伏建议一种技术。这种技术,能支持服务(QoS)的二质量,,保证产量(GT)和尽力销售(),基于把一个更宽的连接切成更狭窄的连接在NoC增加产量和减少潜伏。另外,减轻同步并且减少串音,我们使用为更小的公共汽车编码的1-of-4。更加编码为建议NoC建筑学的使用降低潜伏为并且GT包。另外,当连接的动力消耗量被减少时,带宽被增加。

  • 标签: 网络芯片 路由器 时滞 通过量 等待时间