以制度改革推进城乡一体化进程

根据刘易斯二元经济理论,推进城乡一体化的关键是实现人口在城乡和地区间的自由流动,而在我国,限制和阻碍人口流动的主要是制度因素,制度上的二元结构阻碍了经济二元结构一元结构的转换。从这个意义上讲,城乡一体化的推行意味着一场新的制度改革和制度创新的到来。这就要求我们在推进城乡一体化的过程中,一方面必须紧紧抓住制度创新和改革这一牛鼻子;另一方面,必须尊重经济发展规律,因地制宜,切忌盲目跃进;还要尊重农民意愿,而不可由政府越俎代庖。     

Stackelberg thresholds in network routing games or the value of altruism

It is well known that the Nash equilibrium in network routing games can have strictly higher cost than the optimum cost. In Stackelberg routing games, where a fraction of flow is centrally-controlled, a natural problem is to route the centrally-controlled flow such that the overall cost of the resulting equilibrium is minimized.We consider the scenario where the network administrator wants to know the minimum amount of centrally-controlled flow such that the cost of the resulting equilibrium solution is strictly less than the cost of the Nash equilibrium. We call this threshold the Stackelberg threshold and prove that for networks of parallel links with linear latency functions, it is equal to the minimum of the Nash flows on links carrying more optimum flow than Nash flow.Our approach also provides a simpler proof of characterization of the minimum fraction that must be centrally controlled to induce the optimum solution.     

上市公司过度投资动因研究——基于经理报酬视角的分析

当公司存在自由现金流量时,中国上市公司倾向于过度投资,不过自由现金流量与过度投资的关系会因公司的成长机会高低和持有的自由现金流量的多少而有所不同,从而表现出一定的区间效应。其中,代理问题最严重的高自由现金流量、低成长机会的公司过度投资倾向明显大于其他类型的公司。从对公司过度投资的动因检验来看,高自由现金流量的公司的过度投资与经理报酬显著正相关,显示出此类公司过度投资的动机很大程度上在于提高经理报酬,因而表现出很强的机会主义行为。     

服务业中基于六西格玛管理的客户中心化流程的优化

本文通过分析服务业流程特点,为服务业提供实施六西格玛管理模式与框架,优化服务业流程,为服务业实施六西格玛管理提供参考。     

Modified efficient importance sampling for partially non‐Gaussian state space models

The construction of an importance density for partially non‐Gaussian state space models is crucial when simulation methods are used for likelihood evaluation, signal extraction, and forecasting. The method of efficient importance sampling is successful in this respect, but we show that it can be implemented in a computationally more efficient manner using standard Kalman filter and smoothing methods. Efficient importance sampling is generally applicable for a wide range of models, but it is typically a custom‐built procedure. For the class of partially non‐Gaussian state space models, we present a general method for efficient importance sampling. Our novel method makes the efficient importance sampling methodology more accessible because it does not require the computation of a (possibly) complicated density kernel that needs to be tracked for each time period. The new method is illustrated for a stochastic volatility model with a Student's t distribution.     

Can Banks Self‐Regulate? Voluntary Agreements,Intrinsic Motivation and Games

This article argues that lessons on how to achieve a sustainable financial system can be learnt from the work done on sustainable commons (on common‐pool resources – CPRs – where there is no ‘tragedy of the commons’). Existing approaches to financial regulation may not give proper attention to available solutions. The article proposes that innovative solutions could be tested using experimental methods commonly used in CPRs: repeat run, feedback driven games.     

现金制与应计制财务报表有用性的问卷调查分析

中国的《企业会计准则——现金流量表》要求所有企业从1998年开始编制现金流量表，它克服了传统财务报表所体现的、与应计制会计确认和计量程序相关联的局限性。但是现金流量表、资产负债表和利润表的决策有用性是否存在差异，还缺乏经验证据。本文设计调查问卷，要求财务报表使用者在21种决策背景下封三大报表的有用性追行评级。结果表明，现金流量表在许多决策背景下可以与利润表和资产负债表相媲美，而在以下决策背景下，现金流量表的评级大大高于其他两张报表：评价流动性，评价短期偿债能力，评价支付股利的能力，评价净利润的质量，突出净利润与现金余额之间的差异，预测财务危机，以及预测未来现金流量的金额与时间。     

发展我国城市物流的对策

针对我国城市物流存在的主要问题，认为只有通过采取加强城市物流客观规律的研究，提高对发展城市物流业的认识，创建新型的城市物流经营体系，多渠道筹集发展资金，加强宏观调控和政策引导等措施，才能促进我国城市物流的健康发展。     

Funds Statements and the Two-Entity Test

Funds statements represent one of the most confused and confusing areas of accounting because of the variety of concepts advocated and the paucity of definitions of terms. A recent proposal that a'two-entity test' be used to identify those items which should be included in a statement based on the total resources concept of funds is confusing and contradictory.