地板辐射供暖系统传热的简化解析计算

对地板辐射供暖系统传热的一般数字模型做了简化处理 ,应用分离变量法得到简化模型的解析解 ,并给出算例     

一个微生物生态模型的周期解

文章研究了一类与厌氧消化过程微生物生态模型有关的微分方程组在非自治双曲情形扰动下的周期解，通过利用重舍度的延拓定理，获得了该方程组周期解全局存在性的充分条件。     

不可分的正定Hermite型的构作

不可分的正定Ｈｅｒｍｉｔｅ型的构作朱福祖（华东师范大学数学系上海２０００６２）设（ｍ＞０无平方因子）为虚二次域，Ｄｍ为它的代数整数环，域Ｆ有唯一的非平凡的对合即复共轭，它的不动点域是Ｑ，所谓整Ｈｅｒｍｉｌｅ型是指与它相伴的Ｈｅｒｍｉｌｅ方阵的元素属于...     

LOGISTICS SCHEDULING： ANALYSIS OFTWO-STAGE PROBLEMS

This paper studies the coordination effects between stages for scheduling problems where decision-making is a two-stage process. Two stages are considered as one system. The system can be a supply chain that links two stages, one stage representing a manufacturer; and the other, a distributor It also can represent a single manufacturer, while each stage represents a different department responsible for a part of operations. A problem that jointly considers both stages in order to achieve ideal overall system performance is defined as a system problem. In practice, at times, it might not be feasible for the two stages to make coordinated decisions due to (i) the lack of channels that allow decision makers at the two stages to cooperate, and/or (ii) the optimal solution to the system problem is too difficult (or costly) to achieve.Two practical approaches are applied to solve a variant of two-stage logistic scheduling problems. The Forward Approach is defined as a solution procedure by which the first sta     

非等熵流气体动力学方程组解的生命跨度

考虑一维非等熵流气体动力学方程组Cauchy问题，给出了其经典解产生奇性的一个充分条件，并证明了解的生命跨度的精确估计。     

向量变分不等式解的存在性

利用广义向量平衡问题解的存在性结论，给出了向量变分不等式解的存在性定理。     

AC=BD在微分方程中的应用

利用AC＝BD的思想，将变系数广义KdV方程约化成常微分方程，求出了KdV方程的Lax对。