OAF框架在电子商务平台开发中的研究

文章主要介绍了OAF框架的组成、电子商务平台的模块设计以及OAF框架在电子商务平台上的应用。     

积极支持银行间外汇市场建设

2008年2月26日,中国外汇交易中心发布2007年度银行间外汇市场优秀做市商、优秀会员和优秀交易员名单。根据此次评选,中国建设银行荣获最佳交易规范奖、交易优秀奖两个奖项,该行交易员张乐、刘汉涛被评为优秀交易员。该行在积极参与外汇市场发展的同时,也注重自身外汇业务核心竞争力的提升,将培养行内外汇业务人才和优化外汇业务系统作为塑造自身核心竞争力的重要方面。     

《同业拆借管理办法》保障市场健康发展——专访中国人民银行金融市场司司长兼上海总部金融市场管理部主任穆怀朋

作为十年来最重要的同业拆借政策调整,《同业拆借管理办法》（中国人民银行令[2007]第3号）颁布以来,市场参与者反响积极,同业拆借市场发展步入了一个新阶段。在《同业拆借管理办法》颁布一周年之际,本刊记者带着一系列受到业界广泛关注的问题,对中国人民银行金融市场司司长兼上海总部金融市场管理部主任穆怀朋先生进行了专访。     

Adaptive Learning in an Expectational Difference Equation with Several Lags: Selecting among Learnable REE

It is demonstrated that adaptive learning in the least squares sense may be incapable of satisfactorily reducing the number of attainable equilibria in a rational expectations model when focusing on the forward‐solutions to the model. The model examined, as an illustration, is a basic asset pricing model for exchange rate determination that is augmented with technical trading in the currency market in the form of moving averages since it is the most commonly used technique according to questionnaire surveys. The forward‐solutions to such a model are preferable to the backward‐solutions that are normally utilized since announcement effects is an important feature in currency trade. Because of technical trading in foreign exchange, the current exchange rate depends on j _max lags of the exchange rate, meaning that the model has j _max+1 rational expectations equilibria, where several of them are adaptively learnable in the least squares sense. However, since past exchange rates should not affect the current exchange rate when technical trading is absent, it is possible to single out a unique equilibrium among the adaptively learnable equilibria that is economically meaningful. It is worth noting that the model examined can also be viewed as a model for stock price determination in which the forward‐solutions to the model are preferable to the backward‐solutions since the importance of announcement effects is a common characteristic for currency and stock markets.     

Are executive stock option exercises driven by private information?

In this study, we investigate the extent to which exercise of executive stock options is based upon private information. Contrary to popular belief, we find that shares are held more than 30 days following over a quarter of options exercised. Partitioning the data, we find weak evidence that decisions to exercise and sell immediately are prompted by bad news and stronger evidence that decisions to exercise and hold for at least 30 days are prompted by good news. Enhancing the power of our tests by considering several factors important to exercise decisions, we find that the higher the opportunity costs of early exercise as measured by the time-value of options, the greater the trading profits to executives. We also find that the greater the disguise provided by incentives to diversify and consume as measured by the depth of options in the money, the greater the trading profits to executives who exercise and sell. Turning to non-exercise decisions, we find that a strategy of holding options rather than shares to exploit good news yields positive abnormal returns consistent with theoretical predictions in the absence of dividends.

建立以企业为主体的产学研合作模式促进区域科技自主创新

江苏省充分发挥科教资源优势,搭建科技服务平台,深入开展多种形式的产学研合作,加快了科技成果转化,产学研合作水平不断提升,企业的创新需求日趋主动,创新积极性得到显著提高,成为全省推动自主创新的一条有效途径。     

外贸服装企业供应链危机预警指标体系研究

在我国外贸服装企业快速发展的同时,其供应链也承受着巨大压力,各种国内外因素引起的供应链危机使得外贸服装企业优胜劣汰进程加快．提高供应链危机管理能力和加强自身竞争力成为企业生存的当务之急。文章立足于外贸服装企业,对其供应链危机预警展开研究,并基于粗糙集理论对预警指标体系提出了优化方法。     

Incumbency advantage and its value

Markets with network effects are typically concentrated. The aim of this paper is to discuss some recent work on “incumbency advantage.” That is, the fact that firms already installed generate higher profits than entrants even if the latter offer identical or even better terms (in terms of price and quality) to consumers. In particular, we review recently known sources of the advantage and potential mitigating factors and point to a number of open issues.     

竞争力、市场微观结构与证券交易所变革

纽约证券交易所和纳斯达克实施的重大并购行动标志着全球证券交易所新一轮并购浪潮的兴起,证券交易所之间的竞争再度趋于白热化.交易所之间的竞争已演变为市场微观结构的竞争.本文对纽约证券交易所和纳斯达克的交易成本进行了比较,无论是上市成本还是交易成本,新兴的纳斯达克都比传统的纽约证交所更胜一筹.因而本文认为有效降低交易成本应是提高交易所核心竞争力的关键所在,而改进交易机制、拓展产品服务以及调整组织架构,可以作为降低交易成本、提高交易所竞争力的具体竞争策略.     

The Underpricing and Excess Returns of Initial Public Offerings in Taiwan Based on Noisy Trading: A Stochastic Frontier Model

Initial public offerings (IPOs) are typically offered at prices lower than the transaction price in the early aftermarket. With a stochastic frontier model, we measured the fair offer price of an IPO and then the deliberate IPO underpricing and the market misvaluation based on the estimated fair offer price. Our results show that IPOs are deliberately underpriced. The extent of noisy trading leading to significantly higher market transaction prices explains the excess IPO returns. We conclude that initial IPO returns result primarily from the noisy trading activities instead of the deliberate IPO underpricing.