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宁波市自然科学基金(2009A610014)

作品数:5 被引量:9H指数:2
相关作者:葛红霞莫嘉琪程荣军吴用杨启帆更多>>
相关机构:浙江大学安徽师范大学宁波大学更多>>
发文基金:国家自然科学基金宁波市自然科学基金国家重点基础研究发展计划更多>>
相关领域:理学更多>>

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5 条 记 录,以下是 1-5
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预知工件大小上界的平行机排序问题
2010年
平行机排序问题广泛出现并应用于各领域,如通讯网信道分配的负载均衡,大型计算中的并行计算,柔性制造系统的任务编排等等.研究了预知工件大小上界的半在线平行机排序问题.考察了仅预知工件大小上界和既预知工件大小上界又预知最优目标值的两类半在线模型.基于资源分配公平性和提高服务质量的考虑,针对每类模型都分别考察了两个目标:C_(max)(极小化机器最大负载makespan)和C_(min)(极大化机器最小负载).在不同的目标下,针对m台平行机的一般情况均给出了问题的下界并设计了半在线算法,某些情况下设计的算法是最优算法.
吴用杨启帆
关键词:排序半在线算法设计与分析竞争比
Element-free Galerkin method for a kind of KdV equation
2010年
The present paper deals with the numerical solution of the third-order nonlinear KdV equation using the element-free Calerkin (EFG) method which is based on the moving least-squares approximation. A variational method is used to obtain discrete equations, and the essential boundary conditions are enforced by the penalty method. Compared with numerical methods based on mesh, the EFG method for KdV equations needs only scattered nodes instead of meshing the domain of the problem. It does not require any element connectivity and does not suffer much degradation in accuracy when nodal arrangements are very irregular. The effectiveness of the EFG method for the KdV equation is investigated by two numerical examples in this paper.
王聚丰孙凤欣程荣军
A control method for congested traffic in the coupled map car-following model被引量:5
2009年
Based on the pioneer work of Konishi et al, a new control method is presented to suppress the traffic congestion in the coupled map (CM) car-following model under an open boundary. A control signal concluding the velocity differences of the two vehicles in front is put forward. The condition under which the traffic jam can be contained is analyzed. The results axe compared with that presented by Konishi et al [Phys. Rev. 1999 E 60 4000-4007]. The simulation results show that the temporal behavior obtained by our method is better than that by the Konishi's et al. method, although both the methods could suppress the traffic jam. The simulation results are consistent with the theoretical analysis.
沈飞英葛红霞张辉余寒梅雷丽
具有控制项的弱非线性发展方程行波解被引量:4
2011年
利用解析方法研究了一类具有控制项的弱非线性发展方程.由摄动理论得到了相应方程的渐近解,并研究了控制项对渐近解的影响.
莫嘉琪程荣军葛红霞
关键词:控制函数
General solution of the modified Korteweg-de-Vries equation in the lattice hydrodynamic model
2010年
Traffic congestion is related to various density waves, which might be described by the nonlinear wave equations, such as the Burgers, Korteweg-de-Vries (KdV) and modified Korteweg-de-Vries (mKdV) equations. In this paper, the mKdV equations of four different versions of lattice hydrodynamic models, which describe the kink-antikink soliton waves are derived by nonlinear analysis. Furthermore, the general solution is given, which is applied to solving a new model -- the lattice hydrodynamic model with bidirectional pedestrian flow. The result shows that this general solution is consistent with that given by previous work.
余寒梅程荣军葛红霞
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