信息技术现状及培训需求的调查

讨论了面向社会普及信息技术的重要性,通过问卷调查、统计等方法,对我国信息技术应用和需求的现状及问卷中所反映出的问题,如希望学习的内容,学习时间和费用等方面内容作了认真的分析,提出了解决问题的思路和对策。     

Leveraging Information Across Categories

Companies are collecting increasing amounts of information about their customers. This effort is based on the assumption that more information is better and that this information can be leveraged to predict customers' behavior in a variety of situations and product categories. For example, information about a customer's purchase behavior in one category can be helpful in predicting his potential behavior in a related category, which in turn could help a firm in its cross-selling efforts. In this paper, we present a model to better understand and predict a consumer's purchases and preferences when we may have limited or no information about him in one or more product categories. Conceptually this involves leveraging information from purchases of other consumers in multiple categories as well as partial information (e.g., purchase in one of the categories) of the target consumer. Our approach builds on the pioneering work of (Rossi et al. (1996)) who demonstrate the value of purchase information in the context of a single product category. We present results from an extensive simulation as well as an application on scanner panel data. Our simulation shows many interesting and somewhat surprising results. Specifically, we find that compared to a single-category analysis, a cross-category analysis does not lead to any significant improvement in data likelihood in most cases. Therefore, the single-category analysis of (Rossi et al. (1996)) is even more powerful than previously thought. However, we also find that a cross-category analysis does improve parameter recovery in many situations as compared to a single-category analysis. It is in these conditions that retailers can use cross-category information to better implement micro marketing programs. We demonstrate the transfer of information across categories in an application of two grocery products—Breakfast Foods and Table Syrup. In spite of a reasonable correlation (0.21) in the price parameter across these two categories, our simulation guidelines predict very little benefit of cross-category analysis over single-category analysis. Our empirical results confirm this prediction.     

信息技术在海关风险管理中的应用

长期以来,中国海关监管工作始终面临着一个突出的矛盾,即严格执法与高效运作的矛盾。借鉴国际海关通行的做法,提出了利用海关信息平台,构筑一个科学、系统、完善的风险管理体系,全面推进海关各项业务改革,加快海关现代化建设的步伐,提高海关管理水平。     

论企业信息化采购的优势及其发展对策

传统的企业采购方式效率低下、用工多、成本高、差错也多,越来越难以满足现代企业运营和发展的需要。信息化采购能有效地克服企业传统采购的不足,是现代企业采购发展的重要趋向。     

Value creation and destruction in cross‐border acquisitions: an empirical analysis of foreign acquisitions of U.S. firms

We conduct an investigation of the sources of gains and losses in cross‐border acquisitions in light of different motives for undertaking these transactions: synergy‐seeking, managerialism and hubris. We find that the data are consistent with the expectation that multiple sources of value creation exist in synergistic cross‐border acquisitions: asset sharing, reverse internalization of valuable intangible assets, and financial diversification. Gains accrue to bidder firm shareholders only for the least fungible of these sources of gains, i.e., reverse internalization. For value‐destroying acquisitions that are expected to be driven by managerialism, we find that the data are consistent with only one of the sources of value destruction that we examine, i.e., risk reduction. In these acquisitions, the evidence also suggests that the relative size of the target to the bidder mitigates the negative effects of risk reduction. Our results underscore the importance of considering the implications of alternative behavioral assumptions in empirical strategy content research. Copyright © 2002 John Wiley & Sons, Ltd.     

Strategy to E-learning Applied in Higher Education

Today when people talk about education, the conversation frequently tums to a new type of education called ＂E-learning＂, characterized by new cultural dynamics： globalization, ＂the new economy＂, and the web. It is also to talk about a new form of social interaction. What is E-learning？ In this paper, we give a clear explanation. In order to develop the E-learning in education, we shall set out to improve the competencies of the instructors and set up a strong knowledge platform. And then, the paper provides a strategy to expand E-learning in higher education.     

一种新型通用无线定位增值服务平台

基于现有无线定位系统种类多、覆盖范围小、业务单一的缺点,本文提出了一种新型开放式通用无线定位增值服务平台。该通用定位平台构架于现有的多个无线定位网络并独立于具体的无线通信网络,从而使定位功能和服务范围得到增强,适用于独立于无线通信网络的通用无线定位服务专业运营商。本文给出了通用无线定位增值服务平台的系统结构,然后讨论了基于GSM和3GPPParlayAPI规范的无线定位增值服务平台中间件功能层的定义以及该服务平台的功能,最后介绍了该增值服务平台可为独立的服务提供商提供的基于位置信息的具体应用。     

基于G4平台的嵌入式VxWorks系统在雷达信号处理中的应用

G4平台能快速处理板内节点间以及板间的大数据流通信,本文主要介绍通用G4硬件平台的基本结构特点和相关软硬件,分析基于抢占式多任务VxW orks实时操作系统的优点;充分利用VxW orks操作系统和G4硬件平台特点,完成了雷达数字信号处理中的管理与控制,成功实现了某雷达系统的实时数字信号处理。     

What Drives the Property Price-Trading Volume Correlation? Evidence from a Commercial Real Estate Market

The significant price-trading volume correlation found in the residential property market presents a challenge to the rational expectation hypothesis. Existing theories account for this fact with either capital market imperfection (down-payment effect or loss-aversion consideration) or imperfect information (search theoretic models). This paper employs data from a commercial real estate market, which face a different degree of severity of capital market constraint than the residential market, and thus provide an indirect but effective test for alternative theories. Policy implications are also discussed.     

出版数字物流电子数据交换平台设计

近年来,随着我国数字出版产业的快速发展,传统出版物流形态发生了裂变,出现了新型的出版数字物流形态。文章将目前新型的数字出版引入新型的物流形式——数字物流,在二者结合的基础上引入被誉为"无纸贸易"的电子数据交换技术,实现三者融合,并由此设计了一个出版数字物流电子数据交换平台,有助于降低传统物流业高昂的成本,满足当前用户个性化、多样化的需求,实现出版数字物流平台信息共享、网上查询、订单确认、网上支付、货物追踪、自助出版等功能。