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270 个结果
  • 简介:Itisoftenstatedthatevencleantokamakdischargesdisruptathighdensity.Onepossibilityisthatsuchdisruptionresultfromtheenergylossarisingfromhydrogenrecyclingattheedgeoftheplasma.thisenergylosscouldleadtoacontractionofthecurrentchannelandtheproductionofadisruptivelyunstableconfiguration.

  • 标签: 循环效应 HL-1M 托卡马克装置 放电分布 等离子体
  • 简介:Thediffusionbehaviorofpolystyrenewithnarrowmolecularweightdistributionat20℃in1,4-dioxanewasinvestigatedbythephotoncorrelationspectroscopy.Thecumulantmethodwasemployedfortheanalysisoftheintensity-intensityautocorrelationfunctionmeasuredoverawiderangeofthescatteringvector.ThediffusioncoefficientDwasdeterminedasthefunctionofconcentrationCinthemolecularweightrangeof3.0×104-1.20×106.Inalowconcentrationrange,DwasfoundtobelinearlydependentonC,whichhasbeenfoundforsomeothersystems.ThedependenceofDonmolecularweightatinfinitedilutioncanbewrittenasanempiricalformulaD0=kDM-γM,theexponentγ(0.576±0.01)isingoodagreementwiththeresultofthescalingtheory.

  • 标签: MOLECULAR DIFFUSION POLYSTYRENE Dynamic LIGHT SCATTERING
  • 简介:Letf(x)∈C[-1,1],pn*(x)bethebestapproximationpolynomialofdegreentof(x).G.Iorentzconjecturedthatifforalln,p2n*(x)=p2n+1*(x),thenfiseven;andifp2n+1*(x)=p2n+2*(x),po*(z)=0,thenfisodd.Inthispaper,itisprovedthat,undertheL1-norm,theLorentzconjectureisvalidconditionally,i.e.if(i)(1-x2)f(x)canbeextendedtoanabsolutelyconvergentTehebyshevsories;(ii)foreveryn,f(x)-p2n+1*(x)hasexactly2n+2zeros(or,inthearcondsituation,f(x)-p2n+2*(x)hasexaetly2n+3zeros),thenLorentzconjectureisvalid.

  • 标签: LORENTZ absolutely CONJECTURE polynomial EXACTLY 二忍
  • 简介:A.simplicialmesh(triangulation)isconstructedthatgeneralizesthetwo-dimensional4-directionmeshtoR~m.Thismesh,withsymmetric,shift-invariantvaluesatthevertices,isshowntoadmitaboundedC~1interpolantifandonlyifthealternatingsumofthevaluesattheverticesofany1-cubeiszero.Thisim-pliesthaiinterpolationattheverticesofanm-dimensional,simplicialmeshbyaC~1piecewisepolynomialofdegreem+1withonepiecepersimplexisunstable.

  • 标签: invariant INTERPOLATION TRIANGULATION PIECEWISE symmetric cube
  • 简介:AdetailedstudyofthepressureoscillationinducedbythefilmboilingofHeⅡispresented.Thefilmboilingstateandthestabilitynofthevapourfilmaredeterminedbythegoverningparameter(i.e.theimmersiondepth).Itisfoundthatthepowerdensityspectrumofthepressureoscillationinducedbythefilmboilingdisplaysthe1/f^α-behaviour.Theexponentαwasfoundtobewithintherangefromonetotwo,whichindicatestheexistenceofself-organizedcriticalityinthefilmboilingofHeⅡ.

  • 标签: 超流体 HeⅡ 膜沸腾 压强涨落
  • 简介:Promotedbystannoussalts,1,1,1-trichloro-2,2,2-trifluoroethanereactsreadilywithaliphatic,aromatic,andα,β-unsaturatedaldehydesgivingthecorrespondingalcoholsbearingaCF3CCl2-moietyingoodtoexcellentyields.ThesealcoholsarefartheroxidizedbyJonesreagentgivingthecorrespondingketonesinhighyields.

  • 标签: 1 1-Trichloro-2 2 2-trifluoroethane ALDEHYDES stannous
  • 简介:SupposethatwewanttoapproximatefC[0,1]bypolynomialsinPn,usingonlyitsvaluesonXn={i/n,0≤i≤n}.ThiscanbedonebytheLagrangeinterpolantLnfortheclassicalBernsteinpolynomialBnf.But,whenntendstoinfinity,LnfdoesnotconvergetofingeneralandtheconvergenceofBnftofisveryslow.WedefineafamilyofoperatorsBkn,n≥k,whichareintermediateonesbetweenB(0)n=B1n=BnandBnn=Ln,andwestudysomeoftheirproperties.Inparticular,weproveaVoronovskaja-typetheoremwhichassertsthatBknf-f=0(n-[(k+2)/2)forfsufficientlyregular.Moreover,B(k)nfusesonlyvaluesofBnfanditsderivatiesandcanbecomputedbyDeCasteljauorsubdivisionalgorithms.

  • 标签: INFINITY APPROXIMATE sufficiently POLYNOMIAL converge operators
  • 简介:DesignandConstructionofRIBLLExperimentalSetupatHIRFL¥GuoZhongyan;ZhanWenlong;ZhouJianqun;ZhaoYouxiong;WangJinchuan;L...

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  • 简介:-17 Vibrational Properties of Na_n-17VibrationalPropertiesofNa_n¥ZhangFengsllou;E.SuraudlandR.GlowinskiZItisknownthatsmallso...

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  • 简介:,α-PARTIALREGULARITYFORNONLINEARELLIPTICSYSTEMSTanzhong(DepartmentofMathematics,XiamenUniversity,Xianmen361005,China.)Ab?..

  • 标签: nonlinear ELLIPTIC systems CONTROLLABLE GROWTH CONDITION
  • 简介:TheexpansioncoefficientC^D|L|ofCoulombpotential1/jtofmolecularsystemsinhypersphericalharmonicsisderivedindetail,andtheexplicitexpressionisgiven.

  • 标签: 超球面谐波 扩张 分子体系 势能
  • 简介:Inthispaperwehavestudiedn-persongameproblemsof(0,1)normalizationandcomposition.Alsowehaveconcernedmultilinearextensionsofcompositiongamesandespecialgames[5-7,9-14].AswehavestudiedShapleyvalue[1-4,15],wewillgivesomeproofsofthetheorems.

  • 标签: 复合博奕 标准化博奕 SHAPLEY值 多线性扩展
  • 简介:在这篇论文,我们基于非一致定义一个新非一致的四边的有限元素由在每个元素上强制限制的旋转Q_1元素,它有仅仅自由的三度。我们调查一致性,近似,超级靠近的性质,分离格林的功能和这个元素的超级集中。而且,我们建议一种newpostprocessing技术并且把它用于这个元素。帖子处理了分离答案,这被证明是超级的在网孔上的一个温和假设下面会聚。

  • 标签: 四边形 非一致性 有限元分析 超收敛性 GREEN函数
  • 简介:性质awc1被许多作者使用由弱Chebyshevsubspaces的元素有关近似获得结果。在这份报纸,作者在细节学习这个性质,由收集有关它并且由发现新的散布结果。

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  • 简介:,k┐FACTORIZATIONOFBIPARTITEGRAPHSDUBEILIANGAbstract.Inthispaper,anecessaryconditionforabipartitegraphλKm,ntobeK,k-factoriz...

  • 标签: 由两部组成的图 K1, k 因素 K1, k 因式分解
  • 简介:Anecessaryandsufficientconditionofregularityof(0,1,…,m-2,m)interpo-lationonthezerosoftheLaguerrepolynomialsLn(α)(x)(α≥-1)inamanageableformisestablished.Meanwhile,theexplicitrepresentationofthefundamentalpolynomials,whentheyexist,isgiven.Moreover,itisshownthat,iftheproblemof(0,1,…,m-2,TO)interpolationhasaninfinityofsolutions,thenthegeneralformofthesolutionsisf0(x)+Cf1(x)withanarbitraryconstantC.

  • 标签: LAGUERRE INTERPOLATION regularity uniquely INFINITY explicit
  • 简介:Usingtheextensionhomogeneousbalancemethod,wehaveobtainedsomenewspecialtypesofsolitonsolutionsofthe(2+1)-dimensionalKdVequation.Startingfromthehomogeneousbalancemethod,onecanobtainanonlineartransformationtosimple(2+1)-dimensionalKdVequationintoalinearpartialdifferentialequationandtwobilinearpartialdifferentialequations.Usually,onecanobtainonlyakindofsoliton-likesolutions.Inthisletter,wefindfurthersomespecialtypesofthemultisolitonsolutionsfromthelinearandbilinearpartialdifferentialequations.``

  • 标签: multisoliton (2+1)-dimensions KdV EQUATION