共查询到10条相似文献,搜索用时 15 毫秒
1.
刘国栋 《应用数学和力学(英文版)》2002,23(11):1348-1356
IntroductionThekthorderN rlundEulerpolynomialsE(k)v (x|ω1,… ,ωk)andBernoullipolynomialsB(k)v (x|ω1,… ,ωk)aregivenbythefollowingexpansionformularespectively[1]2 kext(eω1 t+ 1 )… (eωkt+ 1 ) = ∞v=0E(k)v (x|ω1,… ,ωk) tvv!,( 1 )ω1…ωktkext(eω1 t-1 )… (eωkt-1 ) = ∞v=0B(k)v (x|ω1,… ,ωk) tvv!. ( 2 )Clearlyt… 相似文献
2.
IntroductionLetf(x ,λ)beagivenpowerserieswithfunction_valuedcoefficients,i.e.,f(x ,λ) =c0 (x) +c1(x)λ+c2 (x)λ2 +… +cn(x)λn+… ,( 1 )wherecj(x)isarealorcomplexfunctionwithregardasxwhichisdefinedon (a ,b) .Supposethatf(x,λ)isanalyticasafunctionofλattheoriginλ=0 .ItisknownthatPad啨approximantmethodsareusedforobtainingthesolutionofawkwardintegralequations,andespeciallythosewhichpossessageneratingfunctionoftheform ( … 相似文献
3.
IntroductionConsiderthebidirectionalassociativememory (BAM )neuralnetworkswithconstanttransmissiondelaysdescribedbyasystemofdelaydifferentialequationsoftheform[1,2 ]:dxi(t)dt =-aixi(t) nj=1bijfj(yj(t-σij) ) Ii, i=1 ,2 ,… ,m ,dyj(t)dt =-cjyj(t) mi=1djigi(xi(t-τji) ) Jj, j=1 ,2 ,… ,n ,fort >0 .Thesystem ( 1 )consistsoftwosetsofneurons (orunits)arrangedontwolayers,namely ,I_layerandJ_layer.Inthesystem ( 1 ) ,xi( ·)andyj( ·)denotemembranepotentialoftheithneuronsfromtheI_laye… 相似文献
4.
地震作用下高层钢结构的最优MTMD控制策略及设计 总被引:4,自引:0,他引:4
基于一般 MTMD,导出了 MTMD( )、MTMD( )和 TMD的动力放大系数 ( DMF)。以具有 MTMD( )、MTMD( )或 TMD结构的动力放大系数最大值中的最小值为优化准则。基于优化准则 ,列表显示了MTMD( )、MTMD( )和 TMD的最优参数。同时研究了最优参数对振型参与系数的敏感性。提出了 MTMD( )、MTMD( )和 TMD结构 -MTMD( )、MTMD( )和 TMD系统的优化设计方法。数值模拟表明 ,MTMD( )、MTMD( )和 TMD能有效地减小高层钢结构的地震反应 相似文献
5.
云天铨 《应用数学和力学(英文版)》1997,18(8):749-755
Hertz'ssolutionTheProjectsupportedbytheNaturalScienceFoundationofGuangdongProvinceofChina[.IntroductionTheintegralequationsubjecttoconstraintp(s,te)=o,for(s,W)-(r,o)6Q={(r,O)lF(r,o)>c.}'(l.2)hasbeenstudiedin[l].Themultipleintegrationsimilartothelefthandsi… 相似文献
6.
IntroductionConsideraswitchedlinearsystemwithsingletime_delayinthecontrolfunctiongivenby x(t) =Ar(t) x(t) +Br(t) u(t) +Dr(t) u(t -τ) ,(1)wherex(t) ∈Rnisthestate,u(t) ∈R mtheinput,thepiecewiseconstantscalarfunctionr(t) :R+ → 1,2 ,… ,Nistheswitchingpath ,(Ai,Bi,Di) |i =1,… ,Nisafinitefamilyofsystemrealizations.Moreover,r(t) =iimpliesthat(Ai,Bi,Di)ischosenasthesystemrealizationattimet.τ >0isthefixedtimedelayincontrol.Inthispaper ,wewillstudythecontrollabilityofsystem (1) .Theone_per… 相似文献
7.
丁协平 《应用数学和力学(英文版)》2005,26(5):563-570
IntroductionLetX ,YbetwotopologicalspacesandZbeanonemptyset.LetF∶X×X→ 2 Z,A∶X→ 2 XandC∶X→ 2 Zbeset_valuedmappingswhere2 ZdenotesthefamilyofallsubsetsofZ . Thegeneralizedvectorquasi_equilibriumproblemofType (Ⅰ ) (inshort,GVQEP(Ⅰ ) )istofind ^x∈Xsuchthat^x∈A( ^x)andF( ^x ,z) C( ^x) , z∈A( ^x) . ( 1 ) Thegeneralizedvectorquasi_equilibriumproblemofType (Ⅱ ) (inshort,GVQEP(Ⅱ ) )istofind ^x∈Xsuchthat^x∈A( ^x)andF( ^x ,z) C( ^x) , z∈A( ^x) . ( 2 ) … 相似文献
8.
Faiz Ahmad 《应用数学和力学(英文版)》1998,19(7):663-668
I.IntroductionThePade'approximationisatypeofrationalfractionapproximationtoafunction.LetfberepresentedbyapowerseriesthenUI(x)/Vm(x)issaidtobethei,mPade'approximanttof(x),denotedby[l/m],ifUI(x)isapolynomialofdegreeatmostl,Vin(x)isapolynomialofdegreeatmostnlandf(x)~UI(x)/Vm(x)=O(xl " ')(l.2)Ifl=m,thePade'approximantiscalledadiagonalone.APade'approximantisusefulinthatitmayapproximatelyrepresentafunctiononasetlargerthantheintervalofconvergenceofitsTaylorseries(l.l)if'31.Theorthogonalpolynom… 相似文献
9.
《应用数学和力学(英文版)》1992,(5)
Editor-in-chief: Chien, Wei-zang (钱伟长) Vice Editor-in-chief: Yeh, Kai-yuan (叶开沅) Standing Members:Guo Zhong-heng (郭仲衡) Yang Gui-tong (杨佳通) Chen Zhi-da (陈至达) Tan Hao-sheng (谈镐生) Zhou Heng (周恒) Li Hao (李灏) Chu Chao-hsiang (朱兆祥) Wu Xue-mou (吴学谋) Hsueh Dah-wei (薛大为) Loo Wen-da (卢文达) Ouyang Chang (欧阳鬯) 相似文献
10.
《应用数学和力学(英文版)》1992,(9)
Editor-in-chief: Chien, Wei-zang (钱伟长) Vice Editor-in-chief: Yeh, Kai-yuan (叶开沅) Standing Members:Guo Zhong-heng (郭仲衡) Yang Gui-tong (杨佳通) Chen Zhi-da (陈至达) Tan Hao-sheng (谈镐生) Zhou Heng (周恒) Li Hao (李灏) Chu Chao-hsiang (朱兆祥) Wu Xue-mou (吴学谋) Hsueh Dah-wei (薛大为) Loo Wen-da (卢文达) Ouyang Chang (欧阳鬯) 相似文献