资本市场开放与公司内部控制质量——基于“沪港通”的证据

以中国“沪港通”交易制度的实施为政策背景,采用多时点双重差分模型,考察资本市场开放对标的公司内部控制质量的影响,研究发现,“沪港通”交易制度的实施显著提升了公司的内部控制质量,在控制其他因素并经过安慰剂检验、去除A+H股影响、改变周期范围等稳健性检验后,结论依然成立。机制检验表明,“沪港通”主要通过内部和外部两种机制对公司内部控制质量产生影响,其中,内部机制是对股价波动性风险控制,外部机制是审计师声誉风险与政府部门监管。     

Noisy chaotic dynamics in commodity markets

The nonlinear testing and modeling of economic and financial time series has increased substantially in recent years, enabling us to better understand market and price behavior, risk and the formation of expectations. Such tests have also been applied to commodity market behavior, providing evidence of heteroskedasticity, chaos, long memory, cyclicity, etc. The present evaluation of futures price behavior confirms that the resulting price movements can be random, suggesting noisy chaotic behavior. Prices could thus follow a mean process that is dynamic chaotic, coupled with a variance that follows a GARCH process. Our conclusion is that models of this type could be constructed to assist in forecasting prices in the short run but not over long run time periods.First version received: June 2001/Final version received: March 2003     

Utility Regulation and Risk Allocation: The Roles of Marginal Cost Pricing and Futures Markets

The effects on consumer welfare of requiring a utility facing cost or demand risk to use either a fixed retail price or marginal cost pricing are assessed. With marginal cost pricing and cost volatility an efficient futures market allows consumer welfare to be at least as high in every state as with the fixed price. With demand risk marginal cost pricing can benefit the consumer in every state without harming the firm if the profit difference is transferred to the consumer. A futures market can act as a partial replacement for the transfer.     

Collusive Long-Run Investments Under Transmission Price-Caps

In the short run, constraints in the electricity transmission system may give market power to generators. This paper examines whether the constraints themselves are a long-run equilibrium outcome in a competitive environment. We show that independent transmission companies and generators can tacitly collude to raise prices to consumers and divide the resulting profits. We also show that price cap regulation does not prevent this behavior and may in fact contribute to it. The mechanism for collusion is that generators locate their plants so that a capacity-constrained transmission line lies between them and their consumer market. We show that this constraint-based collusion can be sustained in a static game without any punishment strategies.     

地价杠杆在城市经营中的调控作用——以南京市为例

本文紧密结合经营城市这个热点问题，首次系统地阐述了地价杠杆在城市经营中的重要作用。并结合南京市1998－1999年的土地出让实际工作成果，运用文中提出的观点，设立不同的口径进行详细分析与对照。通过综合分析与尝试，一方面，说明地价杠杆在政府经营城市的过程中具有不可替代的地位；另一方面，城市政府完全可以运用地价杠杆的经济特性，趋利避害，更好地促进国民经济的健康有序发展。     

房地产价格风险：国际教训、中国的现状及路径选择

房地产泡沫会增加金融风险,房价大幅缩水会导致银行破产,股市下跌。日本、美国、英国、泰国等都爆发过与房地产相关的银行危机。目前,中国房地产金融具有市场风险、财务风险、道德风险和信用风险等潜在风险。应利用税收手段限制投机性购房和短期炒作行为,鼓励中小户型住房的消费,加强城镇廉租住房制度建设,防范“假按揭”风险,完善惩戒机制,加强利率风险管理,完善住房置业担保制度,进一步研究制定房贷保险制度。     

持续利用的自然资源价格论

本文提出了自然资源持续利用的福利准则及价格构成，并且还阐述了有关自然资源持续利用的价格理论问题。旨在完善自然资源的价格理论体系。     

解决好农民工问题的经济学思考

由于长期受二元经济结构的束缚,农民工这一社会群体一直处在产业的边缘、城乡的边缘、体制的边缘。因此,要解决好农民工问题,就必须打破二元经济结构,在深化户籍制度改革、建立城乡统一劳动力市场、建立健全农民工社会保障体系等方面加大力度。     

美国生物技术企业市场定价及启示

生命科学和生物技术行业不断凸现出投资价值,其日益受到证券市场的青睐,生物技术公司成为了投资者追捧的对象.由于该产业在我国的发展刚刚起步,企业在获取投资者认可等方面还存在很多问题.通过对美国生物技术行业主要上市公司的数据分析,探索了该类企业在证券市场定价的一般规律.     

论我国饭店的等级划分与价格管理

在现实市场中,为了方便对酒店进行监督和管理,也为了不同层次消费者的需要,政府往往根据不同的硬件设施标准和软件服务水平对酒店进行等级划分;同时,由于我国旅游市场的外部性因素,政府又根据相应的标准对其进行一定的价格管制, 实行限价,藉此保护消费者,但是这会对消费者和经营者产生影响。