简介:这篇论文在有限厚度的一次非同类的材料旅行认为一架反飞机是动人的快克。shear模量和长带的集体密度为平衡方程为有分析答案的功能的形式的一个班被考虑。这个问题借助于单个不可分的方程技术被解决。裂缝尖端附近的压力地被获得。结果被阴谋在裂缝尖端域上显示出材料非同质和快克移动速度的效果。裂缝分叉行为也被讨论。纸指出一个适当破裂标准的使用为在非同类的材料学习一个动人的裂缝的稳定性是必要的。预言不稳定的裂缝生长是否将被提高或延迟,强烈依赖于使用的破裂标准的类型。基于分析,看起来最大值“反飞机砍”在裂缝尖端附近的应力是为在非同类的材料的动人的裂缝的一个合适的失败标准。
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简介:Let(ξn)n^∞=obeaMarkovchainwiththestatespaceχ={1,2...,b},(gn(x,y))n^∞=lbefunctionsdefinedonχ×χandFmn,bn(W)=bn/1mn+bn∑k=mn+1gk(ξk-1,ξk).InthispaperthelimitpropertiesofFmn,bn(w)andthegeneralizedrelativeen-tropydensityfmn,bn(w)=-(1/bn)logp(ξmn,mn+bn)arediscussed,andsometheoremsona.s.convergencefor(ξn)n^∞=0andthegeneralizedShannon-McMillan(AEP)theoremonfinitenonhomogeneousMarkovchainsareobtained.
简介:Let{N(t),t≥0}bethenonhomogeneousPoissonprocesswithcumulativeintensityparameterΛ(t),{δt,t≥0}theageprocess,and{yi,t≥0)theresiduallifetimeprocess.Inthepresentpapertheexpressionsofn-dimensionalsurvivaldistributionfunctionsoftheprocesses{δi}and{yi},andtheirLebesguedecompositionsarederived.
简介:Inthispaper,weconsiderthefollowingproblem{-Δu(x)+u(x)=λ(u~p(x)+h(x)),x∈R~N,u(x)∈h~1(R~N),u(x)>0,x∈R~N,(*)whereλ>0isaparameter,p=(N+2)/(N—2).Wewillprovethatthereexistsapositiveconstant0λ*,auniquesolutionforλ=λ*.Furthermore,(*)possessesatleasttwopositivesolutionswhenλ∈(0,λ*)and3≤N≤5.ForN≥6,undersomemonotonicityconditionsofhweshowthatthereexistsaconstant0
简介:Inthisarticle,westudythefollowingnonhomogeneousSchr¨odinger-Poissonequations-?u+λV(x)u+K(x)φu=f(x,u)+g(x),x∈R~3,?-?φ=K(x)u~2,x∈R~3,whereλ>0isaparameter.UndersomesuitableassumptionsonV,K,fandg,theexistenceofmultiplesolutionsisprovedbyusingtheEkeland'svariationalprincipleandtheMountainPassTheoremincriticalpointtheory.Inparticular,thepotentialVisallowedtobesignchanging.
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简介:1.IntroductionInthispaperweconsiderCauchyproblemforaclassofnonhomogeneousNavier-Stokesequationsintheinfinitecylinderwith.Givensatisfyinginthedistributionsensediv,weseekasolutionvectorandapressurefunctionP(t,x)suchthatwhereisanonlinearvector-valuedfun...
简介:在这份报纸,我们在围住的域R3建立有为速度的Navier边界条件的不可压缩的magnetohydrodynamic方程回答的nonhomogeneous和磁场的全球弱解决方案的存在。而且,我们证明当粘性和抵抗力系数同时去零,这些弱答案收敛到强壮理想的nonhomogeneous之一在精力空间的不可压缩的magnetohydrodynamic方程。
简介:Thispaperaddressesthefreetransversevibrationsofthinsimplysupportednonhomogeneousisotropicrectangularplatesofbilinearlyvaryingthicknesswithelasticallyrestrainededgesagainstrotation.TheGram-Schmidtprocesshasbeenusedtogeneratetwo-dimensionalboundarycharacteristicorthogonalpolynomials,whichhavebeenusedintheRayleigh-Ritzmethodtostudytheproblem.Thelowestthreefrequencieshavebeencomputedforvariousvaluesofnonhomogeneousparameters,thicknessparameters,aspectratioandflexibilityparameters.Acomparisonoftheresultswiththoseavailableintheliteraturehasbeenmade.Three-dimensionalmodeshapesforthespecifiedplatehavebeenpresented.