社会养老保险基金平衡问题研究

我国社会养老保险基金的平衡需要实现两个平衡:一是当年收取的统筹部分基金总额与所需支付的各项支出总和保持平衡,即具有现收现付性质的统筹部分的收支平衡;二是所有养老保险计划的参保人在整个缴费期间所提供的个人帐户基金总和加上其投资收益与个人帐户的所有保险金给付保持平衡,即积累基金部分的收支平衡。养老保险基金是否平衡,空帐运行能维持多久及如何解决基金平衡问题是关系到我们的社会养老保险制度能否存续的关键。     

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.     

Ago\ra Partnerships Nicaragua: A micro venture capital fund

Agora Partnerships is a micro venture capital fund founded by Benjamin Powell in the US and Ricardo T. Teran in Nicaragua. Agora started operations in 2005 with the goal of identifying and supporting entrepreneurs and business plans with high potential for success. The fund faces some unique challenges. First, the size of the businesses that is investing in does not allow for a traditional “management fee” structure. Secondly, traditional investment exits are nearly impossible in Nicaragua. This teaching case includes analysis on sources of investment capital, deal structures, and expected returns. The unresolved dilemma remains how to structure an investment proposal attractive to both investors and entrepreneurs. The case also allows discussing how to adapt the venture capital model to an emerging country like Nicaragua.     

婺源乡村旅游可持续发展与徽派古民居保护

在分析婺源乡村旅游发展和徽派古民居保护现状与存在问题的基础上，研究了婺源乡村旅游可持续发展与徽派古民居保护之间的关系，提出了两者协调发展的对策，包括旅游开发与古民居保护利益共享；坚持政府主导、市场化运作；拓展旅游产品；完善古民居保护立法和加强旅游可持续发展与古民居保护的宣传、教育等。     

从2000年基金年报信息追溯基金研究中心的三个问题

本文从三个方面对2000年基金年报信息进行了剖析。第一，从多角度对33只证券投资基金进行分类的结果表明，最能体现基金业绩与投资风格差异度的分类方法不是基金的投资目标而是基金管理公司。基金管理公司内部的资源共享是造成这一现象的原因。第二，指数型基金在2000年的表现尚不尽人意，投资理念亦不清晰。第三，保险公司选择基金的标准相当理性，注重基金的分红市价比、夏普指数、资产净值收益率几项指标，其选择的正确性亦得到2000年基金业绩的证实。     

建设工程质量保修期的研究

质量保修是各国为确保工程质量所普遍采用的一种有效制度。我国现行《建设工程质量管理条例》虽较原来有所进步，但仍存在着保修期限过长，承包商风险偏大等问题，就此参考国内外做法，提出加强质量管理，完善条例实施细则等若干改进建议。     

同轴串接螺线管的自感及互感

本文对两个同轴螺线管串接后的自感、互感进行了定量计算,并对某些特殊情况也进行了推导,同时指出了某些论述之误。