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1.
IntroductionInordertogetridoftherestrictiontodiscreteBabuska_Brezzi’sconditionsinresearchesofmixedfiniteelement (MFE)methods,oneusuallyusesthestabilizedMFEmethodsformat[1] .Thereareanumberofstabilizedmethods (see ,e.g .,Refs.[1- 7]andthereferencestherein) ,whichh…  相似文献   

2.
IntroductionChaoticistheinherentrandomnessinthedefinitesystem .Thedefinitenessiscausedbythesysteminternalsbutnotbytheexternaldisturbance,whiletheinherentrandomnessistheirregularanddifficult_to_be_predictedbehaviorofthesystem .Whatismostattractiveofthec…  相似文献   

3.
IntroductionConsiderageneralizedLienardsystemsoftheform x=h(y) -F(x) , y=-g(x) ,( 1 )wherethefunctionsF ,gandhareLipschitzcontinuousandsatisfyF( 0 ) =h( 0 ) =0 ,xg(x) >0 ,  x≠ 0 . ( 2 )Therehavebeenmanystudiesforlocalandglobalpropertiesofsolutionsforsystem ( 1 ) ,see[1 -9] .SetC+=(x,y)|h(y…  相似文献   

4.
IntroductionChaoticistheinherentrandomnessinthedefinitesystem .Thedefinitenessiscausedbythesysteminternalsbutnotbytheexternaldisturbance[1- 4],whiletheinherentrandomnessistheirregularanddifficult_to_be_predictedbehaviorofthesystem[5 ,6 ].Whatismostattractive…  相似文献   

5.
IntroductionFractalinterpolationmethodisnumericalmethodinthefractalgeometryusingiteratedfunctionsystem (IFS) ,itisdifferentfromtraditionalinterpolationmethod .M .F .Barnsely[1,2 ]firstgavethismethodandresearchedthecontinuityandthefractaldimensionofinterpolat…  相似文献   

6.
IntroductionRandomiteratedfunctionsystem (IFS)isoneofthemethodsforfractaldrawing ,whichwasfoundbyM .F .Barnsleyin 1 985.RandomIFSusesaffinetransformationtosetupconnectionamongeachpartorbetweenentireandregion ,andapplyiterationtoconstructfractalfigure .Hence ,th…  相似文献   

7.
ONUNILATERALLYCONSTRAINEDMOTIONSOFRIGIDBODIESSYSTEMSLiHongbo(李洪波)(MMRC,InstituteofSystemsScience,AcademiaSinica,Beijing100080...  相似文献   

8.
IntroductionThestochasticoptimalcontrolproblemsofreflecteddiffusionprocesseshasbeenconsideredbysomemathematicians,forinstance ,P .L .Lionsin [1 ] ,andJ.L .MenaldiandM .Robinin[2 ] .Inthispaper,wewillconsiderastochasticoptimalcontrolproblemofreflecteddiffusionswit…  相似文献   

9.
IntroductionLikethecoplanarforcesystem ,anygeneralspaceforcesystemFi(i =1 ,2 ,… ,n)canbereducedtoapointOandreplacedbyaprincipalvectorRandaprincipalmomentL0 .Sothatthevector_typenecessaryandsufficientconditionsforequilibriumofthegivenforcesystemareR =0 , L0 =0 . (1 )…  相似文献   

10.
IntroductionWeconsidertheextendedlinearcomplementarityproblem (XLCP)introducedbyMangasarianandPang[1](alsoseeYe[2 ]) :Findavector(x ,y) ∈R2nsuchthatMx-Ny∈K ,xTy=0 , x≥ 0 ,y≥ 0 ,( 1 )whereM ,N ∈Rm×naregiven ,andKisapolyhedralsetinRmdefinedbyK :=u∈Rm|Gu≥g ,  G∈Rl×m,g∈Rl.Thispro…  相似文献   

11.
IntroductionIntheindustrialpractice ,manycontrolproblemofsystemscanbestudiedthroughinterconnectedsystems.Earlierresearchoninterconnectedsystemfocusedonpowersystem[1,2 ],controlofdistributedsystems (e .g .,regulationofseismiccables,vibrationcontrolinbeams,etc.) …  相似文献   

12.
IntroductionItisanimportanttopictosearchfornewintegrablesystemsissolitontheory .Inrecentyears,twoveryeffectiveapproachesthatproduceinfinite_dimensionalandfinite_dimensionalintegrableHamiltoniansystemsrespectivelyhavebeendeveloped .Thefirstoneisthetrace…  相似文献   

13.
IntroductionSwirlingflow (orspiralflow )iswidelyusedinindustry ,e.g .injettechnology ;combustiontechnology ;cyclone/hydrocycloneseparators;pneumatictransportationetc .Swirliscommonlyimpartedtoflowsenteringfurnacesandcombustorsinordertoenhanceflamestabilityan…  相似文献   

14.
IntroductionAmajorproblemofonedimensionaldynamicsistostudytheattractorsofintervalmaps,i.e.theclassificationandstructureofattractors.FollowingMilnor’sdefinitiononattractors[1],iffisaunimodalmapwithnegativeSchwarzianderivative ,thenbyGuckenheimer’stheorem[2 ]…  相似文献   

15.
1 TheFlowModelofPower_LawFluidinRadicalFractalReservoirThetransientflowofpower_lawfluidinradicalfractalreservoirisstudiedinRef.[1 ] ,andanalyticalsolutionofLaplacespaceisderived .InRef.[2 ] ,thetransientellipticalflowisresearchedonmodelofexpandingrectangle .T…  相似文献   

16.
IntroductionThepriceofgoodsvaryingarounditsvalueisconsideredtobeabasicruleofgoods,i.e .,thelawofvalueofgoods.Astockisakindofgoods ,itnatuallyobeysthelawofvalueofgoods.Sothatthepriceofstockvariesarounditsvalue.Todeterminethevalueofstockisveryimportantforth…  相似文献   

17.
IntroductionArefinedepitomeofvariouspansystemsmethodsistocomprehendandoperateabout 2 0pansystemscategorieswhichcanbeexpandedasthefollowingpithyformulasexpressions:Thepanderivatives (orthechange_changerelations)oftheexterior_interior(orthefunction_structu…  相似文献   

18.
RESPONSE CHARACTERISTICS OF WIND EXCITED CABLES WITH ARTIFICIAL RIVULET   总被引:8,自引:0,他引:8  
IntroductionTherehavebeenmanyreportsinthepasttenyearsonexcessiveandunanticipatedvibrationofcablesincablesupportedbridgesunderthesimultaneousoccurrenceofwindandrain[1-5] .Theauthorsalsoobservedwind_raininducedcablevibrationfromacable_stayedbridgerecently…  相似文献   

19.
Complex Inner Product Averaging Method for Calculating Normal Form of Ode   总被引:2,自引:0,他引:2  
IntroductionMostnonlineardynamicsystemsaremulti_degree_of_freedomsystemsinthefieldofengineering[1,2 ],nonlineardynamicsystemsdonothaveexactlytheoreticsolutions.Therefore,itisafocalpointconcernedbyscientiststosearchforapproximatesolutionsforalongtime ,andr…  相似文献   

20.
IntroductionInthesystemofnonlinearoscillating ,periodicmotionisofprimeimportance .Butexistenceofperiodicsolutionsisaverydifficultquestion .Luckilythereexistsomekindsofperiodicsolutioninactualphysicalsystems .Therefore ,weusuallyconcentratedourattentionont…  相似文献   

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