Asymmetric ACD models: Introducing price information in ACD models

This paper proposes an asymmetric autoregressive conditional duration (ACD) model, which extends the ACD model of Engle and Russell (1998). The asymmetry consists of letting the duration process depend on the state of the price process. If the price has increased, the parameters of the ACD model can differ from what they are if the price has decreased. The model is applied to the bid-ask quotes of two stocks traded on the NYSE and the evidence in favour of asymmetry is strong. Information effects (Easley and O'Hara 1992) are also empirically relevant. As the model is a transition model for the price process, it delivers `market forecasts' of where prices are heading. A trading strategy based on the model is implemented using tick-by-tick data.While remaining responsible for any error in this paper, the authors would like to thank R. Anderson, G. Le Fol, C. Gouriéroux, J. Jasiak, W. Pohlmeier, A. Roell, O. Scaillet, S. Wei and three anonymous referees for useful remarks and suggestions on previous versions. The authors would also like to thank A. Ruttiens from KBC-CBC for useful discussions on practical issues related to trading. Support of the European Commission Human Capital and Mobility Program through the network `Econometric inference using simulation methods' is gratefully acknowledged. This paper presents research results of the Belgian Program on Interuniversity Poles of Attraction initiated by the Belgian State, Prime Minister's Office, Science Policy Programming. The scientific responsibility is assumed by the authors.     

政府部门绩效审计评价：基于预算的视角

随着政府绩效审计在我国的逐步开展，政府绩效审计评价已成为当前理论和实务界探讨较多的领域，评价指标的设置和评价方法的选取更是焦点。本文在回顾近年来我国政府绩效审计评价研究的基础上，从预算这一独特的视角，探讨了我国政府部门绩效审计评价指标的构建和评价方法的选择。     

末位淘汰——管理中的一柄“双刃剑”

末位淘汰作为一种管理手段在企业界被广泛采用,在实践中具有优缺点,实施末位淘汰要根据企业的实际情况,选择一个部门或几个部门进行。同时要注重培育良好的绩效文化,让刚性的末位淘汰变得充“满柔性”以有利于末位淘汰制的实施。     

Non-commitment in performance evaluation and the problem of information distortions

Auditing is modeled in a sequential game without commitment. The manager must decide whether and where to audit a worker's output, taking into account all interim information he has obtained. The worker will work just hard enough (and show it) to divert the manager from making an audit or cover up, withholding information about his work to make an audit more difficult. This usually raises the costs of setting work incentives, so incentives are softened, sometimes drastically. Moreover, when a worker's on-the-job information is valuable for entrepreneurial decisions, work incentives must be softened to improve the internal flow of information.     

我国封闭式基金折价与基金运行绩效的相关性检验

笔者以我国的封闭式基金为样本,利用面板数据建模,综合考量了基金折价率与基金绩效指标间相关关系.研究结果发现,基金绩效指标对当期折价指标有显著的负的影响;而当期的基金折价指标不能准确预测未来绩效水平,即基金折价率并没有提供对未来基金绩效的有价值信息.     

股权结构与公司绩效实证研究的发现及其评价

对中国国有企业改革的研究,主要有“委托—代理”“、法定产权与事实产权不一致”“、产业定位与产权特性相对称”等三个理论框架。对股权结构与公司绩效的实证研究,为这三个理论框架的逻辑分析提供了有力的经验证据,也为深化国有企业改革提供了明确的、有益的指导。     

企业内部组织单元绩效评价:一项有效的制度安排

企业内部组织单元绩效评价是企业绩效评价体系的重要组成部分,是连接企业整体绩效评价与员工个人绩效评价的中间环节。应用委托代理理论对企业内部组织单元绩效评价的地位在理论上进行了分析,并对企业内部组织单元绩效评价的功能也进行了系统分析,认为企业内部组织单元绩效评价是一项有效的制度安排,是解决企业内部组织委托代理链上委托代理关系的重要手段。     

非农化经营与农业上市公司经营绩效——理论分析与实证检验

我国农业上市公司非农化经营现象甚为严重,这一现象对农业上市公司经营绩效的影响引起了社会各界的广泛关注.农业上市公司非农化经营主要可以归纳为产业层次和企业管理层次这两方面成因.农业发展不足的现实成为我国农业上市公司非农化经营取向的最大产业背景因素.文章运用农业比较利益理论、外部性理论以及多元化经营理论,形成对农业上市公司非农化经营成因和非农化经营对绩效影响的理论分析框架.通过实证分析所得出的结论是:非农化经营从整体上减损了农业上市公司经营绩效.研究认为,政府应该着力在改善农业投资经营环境和制度创新上下功夫,才可能真正引导农业上市公司专注于农业上来;同时认为,目前农业上市公司主要应当实施农业专业化经营战略,在条件具备的情况下才实施与主业相关的多元化战略,现阶段应尽量避免非相关多元化经营.     

基于政府职能转变的绩效审计研究

政府部门绩效审计的根本推动力量来源于政府职能的转变。立足科学发展，将实施绩效审计纳入政府职能转变之中。多方位和谐推进，解决实施绩效审计时出现的问题。     

论平衡记分卡的"不平衡"

国内对平衡记分卡的认识,与发达国家相比还存在很大差距。许多人还没有真正认识到平衡记分卡的含义和用法,仅仅追求形式,使平衡记分卡成为组织"看起来好看,用起来无用的装饰品"。本文提出根据企业实际情况建立精简的"不平衡"记分卡的观点,借以与大家进行深入讨论。