How to measure mutual fund performance: economic versus statistical relevance

In the present paper a comprehensive assessment of existing mutual fund performance models is presented. Using a survivor‐bias free database of all US mutual funds, we explore the added value of introducing extra variables such as size, book‐to‐market, momentum and a bond index. In addition to that we evaluate the use of introducing time‐variation in betas and alpha. The search for the most suitable model to measure mutual fund performance will be addressed along two lines. First, we are interested in the statistical significance of adding more factors to the single factor model. Second, we focus on the economic importance of more elaborate model specifications. The added value of the present study lies both in the step‐wise process of identifying relevant factors, and the use of a rich US mutual fund database that was recently released by the Center for Research in Security Prices.     

金融发展和经济增长：文献述评

20世纪90年代以来，有关金融发展和经济增长问题的研究成为经济学领域一个热点，相关文献汗牛充栋。本文就金融发展和经济增长的理论研究和实证研究进行系统地分析和综述。     

The cost of collusion：economic thinking on the uniform accommodation price of the hotel industry in Kunming,Yunnan

This paper studies the case of the collusive price of the hotel industry in Kunming by economically analyzingthe unsustainability of the collusive price and instability of collusive organizations, doubts about the collusive behavior,and thinks that the collusive price is not helpful to the development of tourism industry, the pillar industry in YunnanProvince.     

Tari–tax reforms and market access

Reducing taris and increasing consumption taxes is a standard IMF advice to countries that want to open up their economy without hurting government finances. Indeed, theoretical analysis of such a tari–tax reform shows an unambiguous increase in welfare and government revenues. The present paper examines whether the country that implements such a reform ends up opening up its markets to international trade, i.e. whether its market access improves. It is shown that this is not necessarily so. We also show that, comparing to the reform of only taris, the tari–tax reform is a less efficient proposal to follow both as far as it concerns market access and welfare.     

中国创业板上市公司盈利能力的因素分析——基于分位数回归的实证研究

影响上市公司盈利能力的因素有很多,不同的分位数水平下各因素对盈利能力的影响可能存在差异。传统的回归模型只能描述因变量的条件均值受自变量的影响,而分位数回归模型能够依据因变量的条件分位数对自变量进行回归,从而更加精确地描述自变量对因变量的影响。选取截至2013年6月30日的355家创业板上市公司的截面数据,从分位数回归的角度研究了不同分位数水平下各因素对公司盈利能力的影响,并且加入了地区虚拟变量,研究了区位因素与盈利能力的关系。     

On an optimal consumption problem for p-integrable consumption plans

A generalization is presented of the existence results for an optimal consumption problem of Aumann and Perles [4] and Cox and Huang [10]. In addition, we present a very general optimality principle. Received: July 14, 1999; revised version: September 9, 1999     

Environmental tax policy in a model of growth cycles

Summary. The purpose of this paper is to consider environmental taxation which would control emissions of firms in a model of growth cycles. In the model presented below, the economy may experience two phases of growth and environmental quality: “the no-innovation growth regime” and “the innovation-led growth regime”. Aggregate capital and environmental quality remain constant in the no-innovation growth regime, while they perpetually increase in the innovation-led growth regime. The paper shows that the tax plays a key role in determining whether the economy stably converges to one of the two regimes or fluctuates permanently between them. It also shows that there is a critical level of the tax and that the economy obtains higher growth rates of capital and environmental quality by raising (or reducing) the tax if the initial tax is below (or above) the critical level. Received: April 2, 2001; revised version: March 21, 2002 RID="*" ID="*" This research reported here was conducted within the research project “Project on Intergenerational Equity” at Institute of Economic Research, Hitotsubashi University. I am deeply grateful to an anonymous referee for his or her insightful comments, which greatly improved the paper. I also thank Hiroshi Honda, Yasuo Maeda, Yuji Nakayama, and participants in workshops at Hitotsubashi University, Kyoto University, Nagoya University, Osaka University, University of Tsukuba, Yokohama National University, and University of Tokyo for their valuable comments and suggestions. Any remaining errors are mine.     

论武汉城市圈包容性增长的实现——基于经济法纵横二维角度的分析

在武汉城市圈整体增长势头良好的同时,圈内城市差距日益扩大的现象不容忽视。武汉城市圈的包容性增长已成为武汉城市圈的核心命题,其包容性增长需要尽可能消除市场机制和政府行为的缺陷。通过法律从纵横两个维度对政府行为和市场主体行为加以规制,协调区域经济发展,让圈内城市和人民都能平等共享城市圈发展的成果。     

我国创业板市场之不足——基于中小企业融资的角度

中小企业是繁荣经济、扩大就业、调整结构、推动创新和形成新产业的重要力量,然而长期以来受到资金不足的制约。创业板市场的建立为新兴中小企业提供了直接融资渠道,在一定程度上可解决其资金短缺问题,但还存在不足。