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- A existence result is obtained via upper and lower solutions method coupled with the monotone iterative technique. 利用上下解方法结合单调迭代技巧，我们得到了解的存在性结果。
- The present paper using upper and lower solutions,proves an existence theorem of almostperiodic solutions for integrodifferential systems. 采用上下解方法，给出了一个积分微分系统概周期解存在的一般性定理。
- The dynamics of a coupled system of semilinear parabolic equations with discrete time delays is investigated using the method of upper and lower solutions. 动态的耦合系统的半线性抛物方程的离散时间的拖延，研究使用的方法，上部和下部的解决办法。
- The sufficient conditions are obtained for existence of extreme solutions by using upper and lower solutions method couped with monotone iterative technique. 通过利用上下解方法并结合单调迭代技术得到了边值问题的极大解和极小解的一组充分条件。
- The dynamics of coupled system of semilinear parabolic equations with time delays is investigated using upper and lower solutions and its associated monotone iterations. 利用上下解方法及相应的单调迭代序列给出了解的渐近性质。
- By aid of the monotone iteration technique and the upper and lower solutions method, the existence of travelling wave fronts is established for a single species population model with stage structure and distributed maturation delay. 利用单调迭代和上下解方法证明了一类具有分布成熟时间和阶段结构的单物种种群模型的波前解的存在性.
- The existence of peoriodic solutions is given first, then the global attractivity of coupled system of semilinear parabolic equations is investigated by using upper and lower solutions and through principal eigenvalue analysis. 首先给出周期解的存在性，再用有序上下解及主特征值分析方法研究耦合半线性抛物方程组周期解的全局吸引性。
- This ship is an aluminum alloy welded catamaran passenger vessel, using symmetrical semi-hull, single deck, upper lower cabins and propeller driven. 本船为铝合金焊接双体客船,采用对称片体,单层甲板,设上下客舱,螺旋桨推。
- The existence of solutions for singular nonlinear two point boundary value problems subject to Sturm Liouville boundary conditions with p Laplacian operators is studied by the method of upper and lower solutions. 利用上下解方法证明一类具有 p Laplacian算子的Sturm Liouville型二阶非线性奇异微分方程的两点边值问题的解的存在性 .
- We study the existence problem of fourth-order boundary value problems with a derivative term using upper and lower solution method. Then we give an application of our results. 摘要利用上下解方法，研究了含导数项的四阶微分方程边值问题的解的存在性，给出了所获结果的一个应用。
- Applying upper and lower solution method, we investigate the existence of solutions of a class of periodic boundary value problems for impulsive differential equations with piecewise constant argument. 利用上下解方法,研究了一类具逐段常数变元的脉冲微分方程的周期边值问题的解的存在性。
- Monotone iteration method and upper and lower solutions were used to approach to the solution of the first-order integral boundary value problem on time scales form below and above by monotone convergent sequence. 摘要运用单调迭代方法和上下解方法构造了两个单调序列，从上下两个方向分别收敛到一阶积分边值问题。
- coupled upper and lower solutions 耦合上下解
- the method of upper and lower solutions 上下解方法
- upper and lower solutions method 上下解方法
- Method of upper and lower solutions 上下解方法
- L-quasi upper and lower solutions L-拟上下解
- Strict upper and lower solutions 严格上下解
- Tears are secreted by an organ under the upper eyelid. 眼泪由上眼睑下面的器官分泌。
- approaches for upper and lower solutions 上下解方法
