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1.
In this paper, we investigate weak vector solutions and global vector solutions to a parametric generalized system (PGS). By using a weaker assumption, we discuss the lower semicontinuity of solution maps for PGS under the case that the $f$ -efficient solution mapping may not be single-valued. These results extend the recent ones in the literature. Some examples are given to illustrate our results.  相似文献
2.
基于管理效率的公私合作项目伙伴选择与激励机制   总被引:1,自引:0,他引:1  
公私合作模式(PPP)进行公共项目建设有利于解决建设资金紧张以及政府在投资管理上的低效问题.目前用相关利益者理论把PPP模式作为社会博弈来研究,PPP模式相关的公共机构理论,PPP项目的政府监管与定价机制.针对公共项目在投资中期或运行期的公私合作伙伴选择和投资激励契约问题,在政府对项目已作了前期融资和了解的条件下,建立了公私合作伙伴关系的联合投资契约及补贴模型.区分对称和非对称信息两种情形,就如何设计最优契约才能使合作投资双方都能真实地表明他们的努力和管理水平信号进行了研究,分析了政府管理效率对合作投资契约的影响,为公共项目在投资中期或运行期实施公私合作伙伴关系投资提供了决策依据.  相似文献
3.
一个新的弱Pareto-Nash均衡点存在性结果   总被引:1,自引:0,他引:1  
研究了多目标广义对策问题,通过Brouwer-Schauder-Tychonoff不动点定理,建立了弱Pareto-Nash均衡点的存在性结果,最后,通过一个例子,说明结果是新的、不能被已有的存在性结果所包含.  相似文献
4.
工程模型常用检验方法及应用实例   总被引:1,自引:0,他引:1  
描绘变量间统计关系的数学模型是近似公式,其正确性与精度必须通过统计检验验证.统计检验的方法很多且各具优势,着重介绍土建工程变形分析中常用的相关性检验、T检验、χ2检验等,并佐以实例阐明应用范围和具体推演方式,旨在运用经典数学理论指导施工控制,实现数学理论与工程实践的成功结合.  相似文献
5.
基于最小碳排放的广义TSP模型研究   总被引:1,自引:0,他引:1  
以货车由公司仓库向各个销售节点送货这一典型的物流过程为研究对象.建立基于最小碳排放的广义TSP模型,并利用动态规划求解.模型综合考虑了货车行驶路程、运输途中载货量及CO_2排放量,并将货车装载量与CO_2排放量的函数关系体现在目标函数中,与只考虑行驶路程的传统模型相比更具实用性.最后用算例进行了验证,并与传统方法作了比较.  相似文献
6.
In this paper, the global exponential synchronization is investigated for an array of asymmetric neural networks with time-varying delays and nonlinear coupling, assuming neither the differentiability for time-varying delays nor the symmetry for the inner coupling matrices. By employing a new Lyapunov-Krasovskii functional, applying the theory of Kronecker product of matrices and the technique of linear matrix inequality (LMI), a delay-dependent sufficient condition in LMIs form for checking global exponential synchronization is obtained. The proposed result generalizes and improves the earlier publications. An example with chaotic nodes is given to show the effectiveness of the obtained result.  相似文献
7.
Congruence subgroups of Hecke groups   总被引:1,自引:0,他引:1  
Hecke groups are an important tool in subgroups of Hecke groups play an important rule investigating functional equations, and congruence in research of the solutions of the Dirichlet series. When q, m are two primes, congruence subgroups and the principal congruence subgroups of level m of the Hecke group H(√q) have been investigated in many papers. In this paper, we generalize these results to the case where q is a positive integer with q ≥ 5, √q ¢ Z and m is a power of an odd prime.  相似文献
8.
In this paper, dynamical behavior of a class of neural networks with distributed delays is studied by employing suitable Lyapunov functionals, delay-dependent criteria to ensure local and global asymptotic stability of the equilibrium of the neural networks. Our results are applied to classical Hopfield neural networks with distributed delays and some novel asymptotic stability criteria are also derived. The obtained conditions are shown to be less conservative and restrictive than those reported in the known literature.  相似文献
9.
Continual models of deformation of thick layered plates, where the general order of resolving equations does not depend on the number of layers, are constructed with account of the specific character of the unflexural and flexural deformation caused by the symmetric and antisymmetric components of bilateral loads and temperature. Account of the load decomposition during the process of refining a certain reasonable initial solution, consisting in the analytical iterative integration, makes it possible to obtain rather precise continual approximations of stresses and displacements over the transverse coordinate and thus to revise the known continual models.Ukrainian State Academy of Water Management, Rovno, the Ukraine. Translated from Mekhanika Kompozitnykh Materialov, Vol. 35, No. 6, pp. 743–756, November–December, 1999.  相似文献
10.
The purpose of this paper is to study the weak subdifferential for set-valued mappings, which was introduced by Chen and Jahn (Math. Methods Oper. Res., 48:187–200, 1998). Two existence theorems of weak subgradients for set-valued mappings are obtained. Moreover, some properties of the weak subdifferential for set-valued mappings are derived. Our results improve the corresponding ones in the literature. Some examples are given to illustrate our results.  相似文献
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