PORTFOLIO CHOICE VIA QUANTILES

A portfolio choice model in continuous time is formulated for both complete and incomplete markets, where the quantile function of the terminal cash flow, instead of the cash flow itself, is taken as the decision variable. This formulation covers a wide body of existing and new models with law‐invariant preference measures, including expected utility maximization, mean–variance, goal reaching, Yaari's dual model, Lopes' SP/A model, behavioral model under prospect theory, as well as those explicitly involving VaR and CVaR in objectives and/or constraints. A solution scheme to this quantile model is proposed, and then demonstrated by solving analytically the goal‐reaching model and Yaari's dual model. A general property derived for the quantile model is that the optimal terminal payment is anticomonotonic with the pricing kernel (or with the minimal pricing kernel in the case of an incomplete market if the investment opportunity set is deterministic). As a consequence, the mutual fund theorem still holds in a market where rational and irrational agents co‐exist.     

相互制保险公司在我国的实践与发展策略研究

相互制保险比照其他保险组织形式具有保险成本低和管理成本低等优势,引入我国后首先进入了农业保险领域,取得了初步的成效,同时在实践过程中也遇到了阻碍和困难。相互制保险的未来发展有赖于相关法律法规建设和自身管理制度的完善。     

同伴互助学习在大学英语网络自主学习模式中互补发展的实证研究

以多媒体网络技术为手段的大学英语网络自主学习模式广泛应用于大学英语教学中。这种模式弥补了传统教学的不足,充分发挥了其信息化的优势,对教学起到了积极的作用.但是在网络自主学习模式的发展过程中也不可避免的产生一系列新的问题。经过对这些问题的深入分析后,提出了同伴互助学习模式和网络自主学习模式的互补发展模式。     

Analyzing the role of mutual guarantee societies on bank capital requirements for small and medium-sized enterprises

This paper analyzes the impact of the guarantee provided by mutual guarantee societies (MGSs) on the risk premium that banks should charge for small- and medium-sized enterprise (SME) loans under the new Basel Capital Accords (Basel II and III). We also examine whether the foreseeable decrease in the theoretical credit risk premium would be compensated by the cost of the MGS guarantee. To do so, we develop a rating system for SMEs that uses a large sample of Spanish firms over the period from 2005 to 2009. We find that the final effect of the guarantee on the SME risk premium depends on the values taken by the credit variables of the MGS (essentially, the probability of default).     

Conditional performance evaluation for German equity mutual funds

We investigate the conditional performance of a sample of German equity mutual funds over the period from 1994 to 2003 using both the beta-pricing approach and the stochastic discount factor (SDF) framework. On average, mutual funds cannot generate excess returns relative to their benchmark that are large enough to cover their total expenses. Compared to unconditional alphas, fund performance sharply deteriorates when we measure conditional alphas. Given that stock returns are to some extent predictable based on publicly available information, conditional performance evaluation raises the benchmark for active fund managers because it gives them no credit for exploiting readily available information. Underperformance is more pronounced in the SDF framework than in beta-pricing models. The fund performance measures derived from alternative model specifications differ depending on the number of primitive assets taken to calibrate the SDF as well as the number of instrument variables used to scale assets and/or factors.     

MUTUAL FUND PERFORMANCE EVALUATION – APPLICATION OF SYSTEM BCC MODEL

For the first time, this research adopts the system BCC model in data envelopment analysis in order to evaluate mutual fund performance and compares the results between the BCC model and the system BCC model. This study is based on the sample of stock funds and balanced funds in Taiwan, with the empirical results summarised as follows. (i) Under the system BCC model, the average score of balanced funds is greater than the average score of stock funds. (ii) There is a significant difference in efficiency scores between the BCC model and the system BCC model, and it is proper to adopt the system BCC model. (iii) The number of major reference sets that have been referenced under the BCC model is larger than under the system BCC model. (iv) If we neglect the distinctions between stock funds and balanced funds, there will be errors on performance assessment. Ultimately, the results reveal that there is a significant difference between the two models. Provided no consideration is made for the funds belonging to two different systems, errors in performance evaluation are inevitable. This research provides investors with both a more accurate and comprehensive evaluation method.     

Sovereign Wealth Funds: Investment and Governance Practices

Sovereign wealth funds (SWFs) are large, growing, and concentrated investment vehicles, with a current estimated value of U.S. $3 trillion. The combination of low transparency and government ownership has raised questions about political agendas, national security, and transfers of technology. In this article the authors report on the current status of SWFs in terms of investments, regulation, governance, and transparency of activities. They also review some recent studies on SWF investments and their impact on financial markets.     

京港沪三地服务业引资政策建议——基于影响因素实证分析

目前国内的服务业引资研究主要集中在整个国家层面或单个城市,很少分地区对影响因素进行研究,选取三个城市即较具代表性且数据获得性较高的香港、北京、上海对引资影响因子进行研究及比较,分地区来研究服务业利用外商直接投资的影响因素。各地应该提高服务业开放程度,进一步使服务业市场化,提高人力资本存量。而第一、二产业劳动增长率与服务业引资呈负相关关系,各地应合理分配资源有侧重且协调发展好各个产业。     

The influence of pension funds on corporate governance

Although pension funds have gained importance in the last two decades, their role has not been described in detail by economic models. This article focuses on the scope of these institutional investors when they are not satisfied with a management team of a company in which the pension fund holds a block of shares. Stock holdings by pension funds are largely dispersed. Therefore, any intervention by pension funds in corporate governance requires the formation of a coalition of pension funds. The realization of a coordinated intervention, in turn, is subject to the problems related to the provision of public goods, such as free riding. We find that the stock dispersion and the combined share of pension funds, coordination costs and the attractiveness of the exit option are relevant factors for determining the probability of the success of interventions.     

社会保障资金的概念、过程与成本

社会保障资金的有效运行是社会保障制度发挥其功能的前提，因此控制社会保障资金的运行成本对社会保障制度的可持续发展有非常重要的意义。因此，有必要对国内外学者关于社会保障资金的概念，社会保障资盒筹集、投资运营、支付过程中的共识与争议，以及社会保障资金运行的成本等方面的研究文献进行梳理，并给予适当的评价。