企业价格竞争决策的博弈分析 —— 以当前我国PDA市场的价格战为例

博弈论是研究决策主体的行为发生直接相互作用时的决策及决策的均衡问题。运用博弈论 ,可以清楚地分析营销环境中每一个竞争者的行为及反应 ,使企业做到知己知彼 ,百战不殆。文章通过建立博弈模型 ,对当前“PDA市场的价格战”作了初步博弈分析 ,并得出结论 ,以指导企业的价格竞争策略     

股票流动性与股价崩盘风险:公司治理和短期行为视角

流动性究竟能够稳定市场还是给市场带来危机？文章从股价崩盘风险的视角,探讨了股票流动性与股价崩盘风险的关系,研究发现:股票流动性促进了股价崩盘风险,因而并没有起到稳定市场的作用.随后,从“治理理论”和“短期行为理论”两个角度对影响机制进行探讨,研究发现:在二职合一、独立董事比例较低、短期机构投资者持股比例较高时,股票流动性对股价崩盘风险的正向影响更加显著.研究结论既丰富了股票流动性及股价崩盘风险的相关文献,也给管理层及上市公司从微观视角认识股价崩盘风险提供新思路及借鉴.     

浅谈民族考古学的学科特点——以审视里耶发现研究为例

考古学学科的目标是复原历史,复原过去人类社会的生活方式,阐明文化发展的进程,它以独特的学科特点在研究人类社会进程中起到了很大的作用,但考古学研究对象的残破性、偶然性、参比性本身所具有的学科特点决定了考古学学科要重构历史,必须整合相关学科的知识,开放学术视野,多角度多层面地解释资料,才能揭示社会历史真相。湘西里耶的考古发现引发了很多研究,笔者试从考古学科的特点对这一发现研究作探讨性的审视。     

Generalized Augmentation to Control the False Discovery Exceedance in Multiple Testing

Abstract.  A new multiple testing procedure, the generalized augmentation procedure (GAUGE), is introduced. The procedure is shown to control the false discovery exceedance and to be competitive in terms of power. It is also shown how to apply the idea of GAUGE to achieve control of other error measures. Extensions to dependence are discussed, together with a modification valid under arbitrary dependence. We present an application to an original study on prostate cancer and on a benchmark data set on colon cancer.     

A clarifying comparison of methods for controlling the false discovery rate

Traditional multiple hypothesis testing procedures fix an error rate and determine the corresponding rejection region. In 2002 Storey proposed a fixed rejection region procedure and showed numerically that it can gain more power than the fixed error rate procedure of Benjamini and Hochberg while controlling the same false discovery rate (FDR). In this paper it is proved that when the number of alternatives is small compared to the total number of hypotheses, Storey's method can be less powerful than that of Benjamini and Hochberg. Moreover, the two procedures are compared by setting them to produce the same FDR. The difference in power between Storey's procedure and that of Benjamini and Hochberg is near zero when the distance between the null and alternative distributions is large, but Benjamini and Hochberg's procedure becomes more powerful as the distance decreases. It is shown that modifying the Benjamini and Hochberg procedure to incorporate an estimate of the proportion of true null hypotheses as proposed by Black gives a procedure with superior power.     

股指期货价格发现功能研究——基于印度Nifty50股指期货的实证分析

使用基于VECM（向量误差修正模型）的Granger因果关系检验法验证了印度Nifty50股指期货与现货市场之间的价格发现过程,结果发现现货市场在价格发现过程中占主导地位,在新兴市场国家的印度,股指期货缺乏价格发现功能。     

同股同权同价模式解决国有股流通

解决国有股流通的问题 (实际上包括不能流通的国有股和企业法人股两部分 ,以下同 )必将引发我国证券市场上一次深刻的变革 ,将对证券市场产生极其深远影响。我们本着公平公正的原则提出了同股同权同价的定价模式 ,选取了几个典型的样本进行了处理 ,计算了全面流通对整个市场的影响 ,并与净资产的定价模式进行了比较分析。     

A varying coefficient approach to estimating hedonic housing price functions and their quantiles

The varying coefficient (VC) model introduced by Hastie and Tibshirani [26 T. Hastie and R. Tibshirani, Varying-coefficient models, J. R. Statist. Soc. (Ser. B) 55 (1993), pp. 757–796.[Web of Science ®] , [Google Scholar]] is arguably one of the most remarkable recent developments in nonparametric regression theory. The VC model is an extension of the ordinary regression model where the coefficients are allowed to vary as smooth functions of an effect modifier possibly different from the regressors. The VC model reduces the modelling bias with its unique structure while also avoiding the ‘curse of dimensionality’ problem. While the VC model has been applied widely in a variety of disciplines, its application in economics has been minimal. The central goal of this paper is to apply VC modelling to the estimation of a hedonic house price function using data from Hong Kong, one of the world's most buoyant real estate markets. We demonstrate the advantages of the VC approach over traditional parametric and semi-parametric regressions in the face of a large number of regressors. We further combine VC modelling with quantile regression to examine the heterogeneity of the marginal effects of attributes across the distribution of housing prices.     

Combined asymmetric spatial weights matrix with application to housing prices

In this study, a combined asymmetric spatial weights matrix is proposed for capturing the unequal spatial dependence of housing prices, where the advantage of this matrix was demonstrated by a non-nested hypothesis test. To explore the heterogeneous spatial impacts of urban essential characteristics on housing prices over the eastern, central, and western regions of China, after the Lagrange multiplier and likelihood ratio tests, the spatial Durbin model using the proposed weights matrix was applied to each region. The estimation results showed that the direct impacts of college and new employment were significantly negative in the eastern region, but not significant in the central and western regions. By contrast, the direct impacts of hospitals and scenic spots were significantly positive in eastern China, but not significant in central and western China. In addition, the indirect impacts of the four variables were not significant in the three regions. These results suggest that in eastern China, the government may increase the requirements for using medical resources and close tourist attractions in a single city to cool down the skyrocketing housing prices in this area.     

网络出版产品的定价模式浅析

伴随着科学技术突飞猛进的发展,我国经济发展方式转变的课题已被提到议事日程上来,发展文化产业无疑是其中的一条重要途径。网络出版产品是文化产业发展的重要组成部分,目前还未形成成熟的赢利模式,合理地制定价格有利于实现更大的利润,因而,对网络出版产品的定价模式进行探讨,明确了网络出版的定义及特征,实证分析目前我国网络出版产品现状以及定价过程中存在的问题,围绕网络出版产品的经济学特性,立足于几种基础价格理论,尝试解决网络出版产品"社会必要劳动时间"难以衡量这一难题,坚持马克思主义劳动价值论,科学制定网络出版产品的价格。