我国证券承销商声誉与IPO企业质量关系的实证分析

本文利用中国证券发行市场上的数据资料检验了我国承销商声誉与IP0企业质量之间的关系，实证分析的结果显示“认证中介理论”和Chemmanur-Fulghieri模型所表明的承销商声誉与IPO企业质量之间正相关的关系在我国证券发行市场中被扭曲，因此投资者通过承销商的声誉等级来区分发行企业质量的信息甄别机制在我国证券发行市场基本上不存在。这种情形致使我国承销商的信息生产功能和“认证中介”职能严重缺位，这是导致我国证券发行市场信息不对称问题严重、投资者“逆向选择行为”普遍、低质量发行企业充斥市场的一个重要原因。本文认为，管理层改变这种状况的政策取向应包括IPO企业筛选机制的市场化、承销服务费用的市场化、推进和完善“保荐人制度”以及促进承销商股权结构多元化和分散化等几个方面的内容。     

基于多Agent的我国城镇化水平动态模拟

我国正处在城镇化快速发展时期,其未来的状态变化受到多个因素的交叉影响。文章从系统论观点出发,分析了城镇化过程的影响因素,建立了城镇化发展的多Agent模拟模型,模拟了智能体行为选择与状态演化的机理,预测了2014-2020年我国城镇化水平的变化趋势。模拟结果显示：劳动力迁移是影响城镇化水平的直接因素;就业机会的增多、户籍改革政策的实施均为农村人口转变提供了生存保障,是影响城镇化水平的关键因素;到2020年,我国城镇化水平可达63.8%左右。     

基于Agent的供应链协调系统研究

本文首先介绍了Agent及Multi-Agent的特性,分析了供应链协调性的研究现状,应用Agent方法构建供应链协调系统,并对协调系统的实现基础平台进行了探讨。     

A market model with medium/long-term effects due to an insider

In this article, we consider a modification of the Karatzas–Pikovsky model of insider trading. Specifically, we suppose that the insider agent influences the long/medium-term evolution of Black–Scholes type model through the drift of the stochastic differential equation. We say that the insider agent is using a portfolio leading to a partial equilibrium if the following three properties are satisfied: (a) the portfolio used by the insider leads to a stock price which is a semimartingale under his/her own filtration and his/her own filtration enlarged with the final price; (b) the portfolio used by the insider is optimal in the sense that it maximises the logarithmic utility for the insider when his/her filtration is fixed; and (c) the optimal logarithmic utility in (b) is finite. We give sufficient conditions for the existence of a partial equilibrium and show in some explicit models how to apply these general results.     

Multinational Investment Attraction: Principal-Agent Considerations

Government agencies are becoming increasingly involved in the process of providing investment supports to attract foreign direct investment (FDI).This paper focuses on the problem of how best to structure the investment supports. Five different types of investment supports are theoretically and empirically analysed. In each case the effect of the principal-agent relationships between the MNE investor and the agency charged with attracting FDI are assessed in the strategic context. Theoretical analysis suggests that in some cases, governments may prefer support schemes that appear to be more expensive, but have better incentive or risk-sharing implications. Empirical analysis suggests that MNE firm characteristics are related to the type of investment support package obtained.     

经济责任审计成因的经济学分析

两权分离从一开始就是国有企业的一种属性。目前，在不存在完善的对经营者的激励机制、且不存在国家和市场体系对经营者进行有效监督和控制的情况下，我国国有企业中存在比较严重的委托一代理问题。对国有企业领导人员实施的经济责任审计正是在这种情况下为了改善经营者的经营业绩评价机制，以便进一步加强对企业经营者的人事监督的一种制度创新。     

An agent based model concept for assessing modal share in inter-regional freight transport markets

This paper introduces an Agent based modelling approach to model inter-urban freight transport between two or more trading regions. The use of the model is to ascertain the modal share of competing transport modes (road and intermodal) while taking complex transport service supply–demand dynamics into account. It is structured by modules describing company generation, supplier choice, modal competition and International road freight transport market dynamics. The behaviour of individual actors is simulated using normative agent behaviour and market knowledge. Using the micro-simulation approach, shippers and carriers (primarily road hauliers and a maritime based intermodal operator) interact through simulated contracts resulting in the generation of tours. The service performance of the tours is fed back into the model for decision making during contract deliberations. Preliminary application of model to Mediterranean case study show that market share gains of around 25–30% are obtained with policy interventions of financial subsidies to intermodal services and more frequent shipping services in the intermodal transport respectively.     

Towards a credit network based early warning indicator for crises

This paper presents an agent based model which underlines the importance of credit network and leverage dynamics in determining the resilience of the system, defining an early warning indicator for crises. The model reproduces macroeconomic dynamics emerging from the interactions of heterogeneous banks and firms in an endogenous credit network. Banks and firms are linked through multiple credit relations, which derive from individual target leverage choices: agents choose the more convenient leverage level, according to a basic reinforcement learning algorithm. Simulations are calibrated on balance sheet data of banks and firms quoted in the Japanese stock-exchange markets from 1980 to 2012.     

智能主体的认知模型及其理论探讨

系统地论述了智能主体的基本概念和技术特性,反映了当前智能主体研究的最新理论成果。     

智能Agent技术的发展和应用详解

近年来，我国对Agent技术的理论和应用进行了广泛的研究，Agent技术已经从科学研究开始进入实际应用阶段。本文对我国的Agent研究以及有代表性的应用进行了阐述，以期为我国的Agent技术的应用有所裨益．