证券分析师利益冲突行为的“前因”与“后果”——来自上证A股的经验证据

本文选用我国上证A股的证券分析师投资评级和股票收益率相关数据(2010.04.30-2011.04.30),对我国证券分析师利益冲突行为的影响因素以及证券分析师投资评级的绩效进行实证研究。结果表明:承销商分析师相对于非承销商分析师的投资建议更为乐观,且券商的承销和经纪业务对证券分析师利益冲突行为有显著性影响;券商声誉和分析师上年声誉对证券分析师的股票投资评级存在明显的抑制效应;积极性的投资评级和分析师本年的声誉与分析师所荐股票的短期超额收益率呈正相关关系。     

长株潭城市群城市竞争力实证研究

长株潭城市群城市竞争力的高低,对于湖南省乃至中部地区崛起具有重要的战略意义.基于国内学者对城市竞争力的研究现状,深入探讨了城市竞争力的概念及内涵,构建了长株潭城市群城市竞争力综合评价指标体系,利用方差法对指标进行了客观赋权,定量测定了城市群内部各城市竞争力发展水平,旨在为城市群城市竞争力提升以及城市群协调发展提供参考.     

当前高校大学生非正式群体的形成与管理策略探析

随着社会经济的快速发展,大学生非正式群体在高校已普遍存在,在其学习生活中起着日益重要的作用。高校教育工作者,要密切关注大学生非正式群体,认真分析当前大学生非正式群体的形成原因及特征,从而对大学生非正式群体的管理提出行之有效的策略,以充分发挥其积极作用,促进学生素质全面发展及和谐文明大学校园建设。     

Knowledge sharing in revenue management teams: Antecedents and consequences of group cohesion

The practice of Revenue Management has received widespread acceptance in the international hospitality industry yet a lack of best practice in terms of organizational integration persists. This paper follows the notion that revenue management is first and foremost a human activity, dependent on knowledge exchange and concerted decision within revenue management teams. One critical attribute of effective teams is group cohesion. The authors contrasted communication networks of 38 revenue management teams by means of social network analysis to identify the antecedents and consequences of group cohesion. It was found that industry employment, age and revenue management experience define the structure of communication networks and that awareness of other's expertise is central in explaining differences team performance across the sample. The findings highlight the issue of knowledge asymmetry in teams and suggest that the Revenue Manager occupies a more active role as an information broker in order to enhance group decision making.     

Central bank transparency and financial market expectations: The case of emerging markets

In this paper, we study how central bank transparency influences the formation of money market expectations in emerging markets. The sample covers 25 countries for the period from January 1998 to December 2009. We find, first, that transparency reduces the bias (the difference between the money market rate and the weighted expected target rate over the contract period) in money market expectations. The effect is larger for countries with no exchange rate peg and countries with low income. Second, an intermediate level of transparency is found to have the most favorable influence on money market expectations: neither complete secrecy nor complete transparency is optimal. Finally, all subcategories of the Eijffinger and Geraats (2006) index lead to a smaller bias in expectations, with political transparency having the largest effect.     

Calibration of implied volatility for the exchange rate for the Chinese Yuan from its derivatives

Revised implied volatility curves and surfaces for the Chinese Yuan (CNY) exchange rate are obtained from market quotations for CNY non-deliverable options by solving an inverse problem of foreign exchange option pricing, which is calculated using a regularization approach in an optimal control framework. To take account of the market expectation for the CNY exchange rate, a stochastic adjusted factor is applied that follows a Vasicek model with parameters fitted from market quotations for CNY non-deliverable forwards. A well-posed numerical scheme is implemented.     

Should the monetary policy rule be different in a financial crisis?

This article reviews the finding that standard loss functions in output and inflation are higher during discretionary periods than in periods during which monetary policy is described by a rule, such as the Taylor rule. It shows that the finding is consistent with earlier research, but argues that we really do not know if the Taylor rule would have improved performance during the recent financial crisis. The article then considers modifications of policy rules to deal with changes in interest rate spreads, credit aggregates and banks׳ balance sheets.     

福耀玻璃再融资

中国经济高速发展,上市公司产能扩建急需资金,如何选择融资方武是公司管理层面临的决策难题.本案例以中国A股市场上第一家主动取消增发的上市公司--福耀玻璃为背景,阐述了公司取消增发的前后决策过程以及公司管理层面临的困惑.本案例主要适用于公司理财、公司治理等MBA课程.     

Combining forecasts: some results on exchange and interest rates

The aim of this work is to investigate whether the combination of forecasts plays an important role in the improvement of forecast accuracy Particular attention is paid to: (a) the methods of forecasting (the methods compared are neural networks, fuzzy logic, GARCH models, switching regime and chaotic dynamics); (b) combining the forecasts provided by the different methods. This work has also the aim of revising a short-term econometric forecast using a longer-term forecast. The revision process usually runs the opposite way (revision is made on a longer-term forecast using a short-term one to reflect the current available information, but it is not excluded that it is possible to proceed as described above. Daily data from the financial market is used. Some empirical applications on exchange and interest rates are given.     

Strategic behavior in financial markets

We describe a financial market as a noncooperative game in strategic form. Agents may borrow or deposit money at a central bank and use the cash available to them in order to purchase a commodity for immediate consumption. They derive positive utility from consumption and from having cash reserves at the end of the day, whereas being bankrupt entails negative utility. The bank fixes interest rates. The existence of Nash equilibria (both mixed and pure) of the ensuing game is proved under various assumptions. In particular, no agent is bankrupt at equilibrium. Asymptotic behavior of replica markets is discussed, and it is shown that given appropriate assumptions, the difference between a strategic player and a price taker is negligible in a large economy.