分布时滞Hopfield神经网络稳定性

针对分布时滞的Hopfield型神经网络构造了李雅普诺夫能量函数,证明了该网络的稳定性问题。证明过程中运用了引理的结论,充分利用了所取李雅普诺夫函数的特殊性,较多地运用了不等式分析方法及不等式放缩技巧。同时由于时滞的存在,证明过程中还涉及李雅普诺夫泛函问题。最后利用引理的结论得出了该网络全局一致渐近稳定的结论。     

BARGAINING AND DELAY: THE ROLE OF EXTERNAL INFORMATION

This paper examines the notion that delay in reaching agreement in bargaining may be caused by learning that is independent of the bargaining procedure. In particular, learning is not due to inference from the observed offers and responses of the opponent, but derives from observation of an exogenous, costly signal – we call this 'investigation'. First we observe that even if learning is costless and perfectly informative, investigation may not occur in equilibrium. Under more general conditions, however, uninformed agents typically have an incentive to try to manipulate their prior beliefs through investigation. The main result is that investigation by an uninformed agent may result in significant delay occurring before agreement is reached. We show that this delay may be sustained in the limit as the length of time period vanishes, and that this result depends crucially on the properties of the information production technology underlying investigation. Also, the delay we observe is shown to be robust to changes in the bargaining procedure.     

动态交通路网中有效路径的确定方法

给出了动态有效路径的明确定义,并将深度优先搜索的树搜索算法、寻路定向性、层次空间推理策略以及A*算法中的定向估价函数相结合,提出了动态有效路径的一种有效算法.在新算法中通过对交叉口延误的特殊处理,使得城市交通路网中的分向交叉口延误得以充分体现,并有利于将交通导行系统与交通控制系统相融合.同时对动态有效路径搜索在动态车辆路径导行和动态交通分配中的应用作了初步分析.     

论现代项目管理的四大转变

项目作为企业及国民经济发展的基本单元,是企业乃至国家竞争力的重要支撑。目前,项目管理已经成为一个新兴的学科和行业,在全球得到广泛应用并取得巨大成功。现代项目管理与传统项目管理相比出现了4大转变:从艺术到科学、从经验到理性;从实现″三大约束″到使利益相关者满意;从项目式管理到“按项目进行管理”;从项目实施者到职业经理人。     

Project Adventure体育课程模式对大学生社会适应能力的影响

针对我国大学生社会适应能力的现状,采用文献资料调研、动态性现场实验等方法,以大学生社会适应能力提高的有效途径与方法为研究对象,对高校体育课程中运用Project Adventure体育教育模式的可行性和必要性进行了分析,指出高校体育课程中Project Adventure体育教育模式是促进大学生社会适应能力较为有效的途径与方法,并提出了将Project Adventure体育教学模式作为高校体育课程开设的思路与对策。     

论西方悲剧精神内在延宕的审美特征

西方悲剧精神的审美特征之一显现为内在延宕。内在延宕在古希腊神话中表现得朦胧隐晦且具有象征意味。内在延宕在后来成熟的文学作品中逐步表现得清晰明朗且具有心灵矛盾意味。具体情况大致表现为两种类型:一是直接的心灵矛盾构成悲剧剧情运行主流;一是间接的心灵无所皈依构成悲剧剧情运行主流。     

含时滞的偏泛函微分方程解的稳定性

采用不等式估值方法 ,对含时滞的偏泛函微分方程解的稳定性进行了讨论 ,获得了零解渐近稳定的简洁判据     

生态屏障投融资主体多元化和企业组织形式创新研究

目前我国生态屏障建设主要依靠政府作为单一主体进行投融资,资金不足严重制约了生态屏障建设的深层次发展。从生态屏障建设投融资的角度进行深入研究,以理论创新和实践创新拓宽资金来源、理顺资金通道是推动生态屏障建设的关键性工作。通过对企业参与生态屏障建设的可行性、必要性进行深入分析和研究,提出了建立生态屏障建设有限公司、生态屏障产业投资基金、信托投资公司等多种企业组织形式创新。     

一类非自治时滞微分系统有界解的收敛性

研究一类非自治时滞微分系统有界解的渐近性态,且给出系统的有界解收敛于其平衡态的结果。     

A New delay control method for real-time flows

This paper presents a novel control algorithm to decrease the worst-case delay bound for high rate homogeneous and heterogeneous real-time flows when the network traffic load becomes heavy. The algorithm is adaptive based on the instantaneous network situations. It employs a generalized form of traditional (σ,ρ) regulator called the generalized (σ,ρ,λ) regulator that operates like the (σ,ρ) regulator under the normal network traffic load situation, but provides more regulations for the heavy network traffic load situation. For a set of real-time flows, we can show that D _rg ≤D _g where D _rg and D _g are the worst-case delay bounds with the (σ,ρ,λ) regulator and the (σ,ρ) regulator respectively. More specifically, we have developed a set of formulas to set the parameters for the new regulator so as to reduce the worst-case delay bounds for the real-time flows. We can prove that there exists a threshold input rate ρ^* such that D _rg = D _g for ρ≤ρ^* and D _rg < D _g for ρ > ρ^*. When the average input rate of real-time flows is very high, the generalized regulator can effectively control the delay. The extensive experiment data match our theoretical results. The part of this paper has been appeared in The 23 ^rd IEEE International Conference on Distributed Computing Systems, 2003. The work is supported by CityU strategic grant Nos: 7001777 and 7001709 and CityU ARP Project No. 9610027. H. Wang was partially supported by National Natural Science Foundation of China (10471088, 60572126) and CityU strategic grant no. 7001709. Wanqing Tu is now with Department of Computer Science, The Hong Kong University of Science and Technology. Clear Water Bay, New Territories, Kowloon, Hong Kong.