| 1. | Infinite boundary value problems for nonlinear impulsive differential equations with quot; supremum quot
的非线性脉冲微分方程无穷边值问题 |
| 2. | Multiple positive unbounded solutions of infinite boundary value problem of a class of nonlinear second order differential equation
一类非线性二阶微分方程无穷边值问题的多重正无界解 |
| 3. | In this paper , by constructing a special cone and using fixed point theorem on cone , the existence of at least one positive unbounded solutions of infinite boundary value problem of a class of singular differential equations is obtained
摘要通过构造一个特殊的锥，利用锥上的不动点定理讨论了一类二阶奇异微分方程无穷边值问题正无界解的存在性。 |
| 4. | In this paper , by constructing a special cone and using krasnoselskii fixed point theorem , the existence of two positive unbounded solutions of infinite boundary value problem of a class of nonlinear second order differential equation is proved
摘要本文通过构造一个特殊的锥，利用锥拉压不动点定理，证明了一类非线性二阶微分方程无穷边值问题的两个正无界解的存在性。 |
| 5. | In this article , we study the infinite boundary value problems for first order nonlinear impulsive differential equations with " supremum " by means of the upper and lower solution method and the monotone iterative technique , and obtain the existence theorems for their extremal solutions
摘要应用上下解方法和单调迭代技术研究了带有上确界的一阶非线性脉冲微分方程无穷边值问题，并获得了其极值解的存在性结果。 |
| 6. | Firstly , the paper introduces the principle of instituting contact interface element and the format of integral method for element stiffness matrix ; secondly , because of the zero of displacement and load of soil in the infinite boundary , the unique shape of element stiffness matrix is obtained for coupling the three different elements
文中首先阐述了接触元建立的方法以及单元刚度矩阵的积分方法；由于无限远处的土场位移、地震作用力皆为零，计算中对该单元刚度矩阵的形式不同于四节点等参元，文中推导了平行无限元的单元刚度拒阵方，并介绍了无限元单元刚度矩阵组装原理。 |
| 7. | In this pattern a new kind of infinite boundary element is developed to reduce wave reflection on the boundary . by this method , a simple and convenient numerical way is worked out and dissipation of the pore press , damping can be taken into account . it can not only solve the problem of material nonlinearity , but also be suitable for the problem of large deformation
考虑到反射波在计算区域内经多次反射、透射和散射对计算结果可能产生较大的影响，在上述饱和砂土有限元模型的基础上，建立了一种新的动力无限元计算模型，该模型能满足工程计算的要求。 |
