Choice of Portfolios and Fee under Principal -Agent Framework with Uncertain Exit - Time

In the real world, an investor is usually not sure about when he or she will exit investment. She can only make estimation prior. With the growth of the scale of open - end funds which can be subscribed and redeemed at any time. Investors began to pay more attention on problems such as whether the fee is reasonable, the payment can encourage the agent or not. Others would consider if the portfolio that the agent chooses is the best one. This paper considers the principal - agent problem with uncertain exit - time under two cases： the action of the agent is observable and unobservable. We derive close - form expressions of the optimal portfolio and the best fee. Finally an empirical analysis is given based on the data of some open - end funds in China.     

权力平等分配是否有利于家族代理效率提升——家族控制、内部股权集中度与代理效率研究

家族企业的两类代理问题是家族企业区别于其他类型企业的特色之一。文章以深市上市家族企业为研究对象,对家族控制权与代理效率之间的关系,以及股权在家族成员之间的配置中的调节作用进行了实证研究。结果表明,控制性家族对企业控制权的增强有助于提高代理效率。内部股权集中度对家族控制权与代理效率之间的关系起到了显著正向调节作用,这表明家族控制权在内部权力分配集中的阶段对代理效率的贡献更强;另一方面也说明家族内部权力分配的不平等性并不一定会损害家族企业的治理效率,对于家族控制权更高的企业,适度的权力集中分配会对家族企业的发展提供有效的支持。     

政府投资项目代建制的财政和财务管理工作探讨

代建制作为一种新的建设模式,克服了“投、建、管、用”四位一体的政府投资工程管理模式所带来的非专业化、低效率、低质量等弊端,通过专业化、集中化和市场化的管理,实现投资控制,保证质量和工期。但代建制是有相应的配套制度作保障的,如果制度不配套,依然会存在风险。在新的政府协调干预机制下———建筑工务局的成立,探讨如何搞好代建制的财政财务管理工作。     

Econophysics review: II. Agent-based models

This article is the second part of a review of recent empirical and theoretical developments usually grouped under the heading Econophysics. In the first part, we reviewed the statistical properties of financial time series, the statistics exhibited in order books and discussed some studies of correlations of asset prices and returns. This second part deals with models in Econophysics from the point of view of agent-based modeling. Of the large number of multi-agent-based models, we have identified three representative areas. First, using previous work originally presented in the fields of behavioral finance and market microstructure theory, econophysicists have developed agent-based models of order-driven markets that we discuss extensively here. Second, kinetic theory models designed to explain certain empirical facts concerning wealth distribution are reviewed. Third, we briefly summarize game theory models by reviewing the now classic minority game and related problems.     

基于Agent技术的工作流引擎结构研究

在分布式工作流引擎建模中,引入了具有良好应用特性的多Agent技术．并对引擎模型中各个Agent模块分别进行解释。应用规则推导产生工作流引擎模型,对动态复杂活动进行解析,选取最佳执行路径,同时对任务和资源进行合理调度安排,提高资源利用率。Agent按照这种模型进行系统应用,以改善工作流引擎的运行效率。     

基于CORBA技术的多Agent智能库存管理系统

基于一个供应链模型及供应链时间序列假设，论述了Agent的定义及结构，在此基础上构建了供应链环境下的智能库存管理系统，并使用CORBA技术作为系统集成的实现手段。     

An agent-based nurse rostering system under minimal staffing conditions

Nurse rostering is a complex problem. We propose a new heuristic using a competitive agent-based negotiation that focuses on nurse preferences called competitive nurse rostering (CNR). Unlike the existing literature, CNR models each nurse's preference functions separately and separates the cost minimization and preference maximization problems. CNR produces quality nurse rosters even though it cannot leverage extra staffing. As an agent system, CNR can distribute computational requirements over several computer systems, include other solution methods at various points in of the rostering problem, and act as a real-time scheduling system. These benefits are not naturally inherent in centralized heuristic solutions.     

面向项目和岗位建立与优化建设项目知识库

文章充分利用项目和岗位在实践中承载知识的有利条件，面向项目和岗位，提出了在建设项目管理中建立与优化知识库的新思路，即应该从知识的来源分类存贮知识，并根据知识的应用范围和应用条件建立分级分类的知识库体系；通过串行和并行智能体Agent辅助岗位完成知识的采集与挖掘，使整个知识库体系在应用中具备自我学习和发展的能力。     

基于Agent的物流配送决策支持系统研究

物流配送是一个涉及多种影响因素的综合性复杂问题。本文探讨了基于Agent(智能体技术)的物流配送决策支持系统设计，在该系统中的智能体模型中引入学习机制，初步建立了一个具有专家系统特点、可以不断进化的物流配送决策支持系统。