基于搜寻理论的网上交易市场效率研究

网上交易市场作为新兴市场,呈现出许多与传统市场不同的特点。在网上交易市场,消费者的搜索成本得到了极大的降低。本文以搜索理论为基础,建立了相关模型,并推导出网上交易市场具有更大的市场效率的结论。     

加快推进信息产业发展 促进吉林老工业基地振兴

在振兴吉林老工业基地的过程中，信息产业的发展尤为重要。然而，目前我省信息产业发展中存在着信息产业规模不大、质量不高，对信息产业的投入不足，管理体制落后，创新人才与创新能力不足，以及信息产业管理水平低下等问题。针对以上问题，建议积极培育信息产业名牌产品，形成技术规模优势；大力发展软件业：优化信息产业发展软环境；大力开展招商引资工作；健全人才吸引和人才激励机制；提高社会信息化水平，加快信息产业的发展。     

制造类企业实施ERP与Ecommerce的优先性分析

文中主要对目前国内制造业在实施ERP和Ecommerce的优先性这一问题进行了分析。提出在企业的实施过程中应该先进行ERP的实施，而后进行Ecommerce的实施，并对做出这个提议的原因进行了分析，以及就这种实施过程中存在的问题以及可以采取的措施进行了论述。     

哈希函数在搜索引擎构造中的作用

搜索引擎作为一种独特的信息检索方式,在网络盛行的今天得到了广泛应用。文章从搜索引擎的原理,哈希函数在搜索引擎构造中的作用,以及搜索引擎在实现用户检索信息时所发挥的作用3个角度来阐述哈希函数在信息检索中的作用。     

Empirical tests of information aggregation

This paper proposes tests to empirically examine whether auction prices aggregate information away from the limit. These tests are applied to a unique data set containing winning bids and measures of the value and dispersion of information signals in eBay auctions for computers. Results suggest that prices partially aggregate information but do not converge to the common value. Even away from the limit, more bidders and stronger information have a significant effect on the convergence of prices and information aggregation. Even partial information aggregation may represent a potential efficiency gain over one-to-one trade of used goods with uncertain common values.     

探究物流服务中的弱势群体

从农业生产的特点引出农民在物流服务中的弱势特征,阐明了农民这一物流服务中的弱势群体对物流的依赖关系,并提出抓住社会主义新农村建设的战略机遇,发展农村物流体系,改变物流服务的弱势群体现状。     

Measuring Transparency in the Dutch Mortgage Market

Summary This paper is an empirical study of pricing in the Dutch mortgage market. For a narrowly defined set of endowment mortgages (with a fixed lending rate of 10 years), we find that the price dispersion within lenders is larger than the dispersion across lenders. Prices remain dispersed across lenders, even after controlling for characteristics of the borrower, the municipality and the government bond rate. Apparently, the mortgage market is not fully transparent, which impedes competition in the mortgage market. We also find that the price dispersion for mortgages sold by banks is smaller than that for mortgages sold by other lenders. A likely explanation is that lenders using middlemen have higher agency costs. We wish to express our gratitude to the National Mortgage Guarantee (Nationale Hypotheek Garantie) in Zoetermeer, in particular Karel Schiffer and Hans Mersmann, for providing us access to their data as well as for their hospitality. We are grateful to Wim van Assenbergh, Harry Garretsen, Ralph de Haas, Jan Lemmen, Clemens Kool, Job Swank and two anonymous referees of this journal for their comments on previous versions of this article.     

A Model of Reputation in Cheap Talk*

We study a dynamic game of advice where the sender's preferences are unknown to the receiver. The novel feature of the model is that there is more than one type of biased sender. We show that the more equal the proportions of different biases in the sender population, the greater the credibility of the information transmitted. Somewhat surprisingly, however, we also find that the receiver does not benefit from this equality. We discuss our results in the context of political lobbying and show that institutions that increase transparency lower lobbyists' incentives for truthtelling, but unambiguously promote the policymaker's welfare.     

一类新的模式识别联想神经网络

本文提出一类可用于模式识别的联想神经网络的综合方法,这类网络结构不受对称联接的限制,网络保证了要求的M类模式的稳定形成,且网络的容量远远超过Hopfield的联想神经网络,网络渐近稳定平衡点的吸引特性使受噪声污染的模式能得以正确恢复,体现了神经网络的非线性滤波性质。文中给出了综合一个这类联想网络计算机模拟以及模式识别的例子。     

SUPPLY CHAIN INTERFACES: DEFINING ATTRIBUTES AND ATTRIBUTE VALUES FOR COLLABORATIVE LOGISTICS MANAGEMENT

Managing supply chain interfaces, where information or physical goods are exchanged between one trading partner and another, is a key component of collaborative logistics management (CLM). Identifying the interfaces on which to focus, and describing the attributes and attribute values of these interfaces, fosters effective CLM arrangements.