完善人民币汇率形成机制的改革措施:机理与次序

当前研究未能说明汇率制度改革措施作用于汇率形成机制的机理,也就不能确定各种改革安排的合理次序。有鉴于此,本文首先利用随机存货理论,依据结售汇制的微观市场安排,建立了我国外汇交易市场的有效外汇需求函数。之后,结合外汇供给方面建立了分析人民币汇率形成机制的理论框架。最后据此框架,我们论证了各种改革措施对人民币汇率形成机制和稳定机制的影响,并根据其影响提出了改革安排的具体次序。     

Order preferencing, adverse-selection costs, and the probability of information-based trading

Although prior studies offer various conjectures on the causes and consequences of order preferencing, there is only limited empirical evidence. In this study, we show that the extent of order preferencing is significantly and negatively related to both the adverse-selection component of the spread and the probability of information-based trading. This result is consistent with the prediction of the clientele-pricing hypothesis that dealers (brokers) selectively purchase (internalize) orders based on information content. Our results suggest that order preferencing may not be as harmful as some researchers have suggested and offer some rationale for its prevalence in securities markets with heterogeneously informed traders. JEL Classification G18 · G19     

顺序输送成品油管道混油量计算公式对比

主要考查了顺序输送成品油管道混油量计算公式,根据3个公式的对比确定在进行成品油管道规划设计混油量的计算时,如何选择合适的混油量计算公式。     

Linearity of regression for non-adjacent order statistics

Let X ₁,X ₂,…,X _n be a random sample from a continuous distribution with the corresponding order statistics X _1:n≤X _2:n≤…≤X _n:n. All the distributions for which E(X _{k+r: n}|X _k:n)=a X _k:n+b are identified, which solves the problem stated in Ferguson (1967). Received February 1998     

我国上市公司融资啄序的实证分析

鉴于融资啄序理论主张的在信息不对称条件下的"留存收益-债权-股权"的企业最优融资啄序,以我国A股上市公司1994～2007年的融资数据为样本,根据上市公司的规模、成长性和杠杆水平对其进行分类,运用面板数据模型分析不同规模、成长性和杠杆水平的上市公司融资行为的啄序特征.实证结果表明:我国上市公司均存在不同程度的股权融资偏好,但这种偏好会受到诸如规模、成长能力和负债水平等内部条件以及外部融资政策的制约.     

外汇市场的定单流决定和影响汇率的理论与实证分析

本文从微观外汇市场结构的视角出发,借助于Evans和Lyons（2001）提出的微观外汇市场结构模型,详细剖析微观外汇市场汇率决定的核心变量一一定单流,指出其功能及在汇率决定中的应用。并分别利用美元与马克以及美元与人民币两个货币对的实际数据通过协整、误差修正模型以及最小二乘回归进行了验证,研究结果表明,人民币／美元汇率波动与定单流之间存在长期的均衡关系,但是整体来看人民币／美元定单流的解释能力没有马克／关元定单流的解释能力那么强,说明虽然我国目前已经具备了微观汇率决定理论的部分前提基础条件,但是,我国外汇市场市场机制完善程度较低是制约定单流功能发挥的重要原因。     

Price discovery in foreign exchange markets: A comparison of indicative and actual transaction prices

In this paper, we compare four months of Reuters EFX high frequency indicative data with D2000-1 inter-dealer transaction data for DEM/USD and GBP/USD. Contrary to previous studies, we find, using various information measures, that the matched tick-by-tick indicative data bear no qualitative difference from the transaction data, and have higher information content. Expanding the system to include order flow, due to its growing importance in exchange rate theory, we find that indicative data has a similar impact on order flow as transaction data. However, order flow has no impact on either price.     

农户的融资次序与农村民间金融的发展

农村民间金融组织在农村金融市场中一直扮演着十分重要的角色。本文认为农村民间金融组织发展的内在因素是源于农户独特的融资次序,从而决定农村民间金融与正规金融竞争中具有天然的优势和特有的负面效应,导致民间金融面临着未来发展路径的艰难选择。     

Trade liberalization,intra-industry trade and the environment: competition mode and the order of firms’ moves

This paper explores the implications of trade liberalization by extending the intra-industry trade framework à la Fung and Maechler (J Int Trade Econ Dev 16(1):53–69, 2007) to the case of sequential move and taking the mode of firms’ competition into consideration as well. It is shown that the existing results obtained for the case of simultaneous price competition are robust in quantity competition and sequential move cases. Moreover, it studies the likelihood that the environmental effects of trade liberalization occur.

基于VB的幻方算法设计与实现

幻方最早起源于中国,是一种古老的大众化的数字游戏,它不仅在数学中占有重要的研究地位,而且在计算机科学中也被广泛的应用。本文主要介绍了幻方及n阶幻方的构造算法,并利用Visual Basic实现了n阶奇幻方。