A new measurement method of investor overconfidence

We present an alternative measurement method of investor overconfidence, using unique survey data on stock market predictions of investors. We apply the Parkinson estimate based on extreme bounds around the stock forecast to deduce investor confidence. The results support overconfidence.     

Funded social security and economic growth

This paper investigates the relationship between economic growth and a fully funded social security system in an overlapping generations model with family altruism. It is shown that funded social security may harm growth if there are operative bequests within the family.     

Bank competition, financial reform, and institutions: The importance of being developed

In this paper, I estimate the degree of market power at the bank-level for 84 banking systems worldwide. Subsequently, I analyze the sources of bank competition, placing emphasis on the impact of financial reform and the quality of institutions. I find that financial liberalization policies reduce the market power of banks in developed countries with advanced institutions. In contrast, banking competition does not improve at the same pace in countries with weaker institutions and a lower level of institutional development. The results hold across a wide array of identification tests and estimation methods. The main policy implication to be drawn is that a certain level of institutional development is a precondition for the success of reforms aimed at enhancing the competition and efficiency of banking markets.     

Schooling,educational achievement,and the Latin American growth puzzle

Latin American economic development has been perceived as a puzzle. The region has trailed most other world regions over the past half century despite relatively high initial development and school attainment levels. This puzzle, however, can be resolved by considering educational achievement, a direct measure of human capital. We introduce a new, more inclusive achievement measure that comes from splicing regional achievement tests into worldwide tests. In growth regressions, the positive growth effect of educational achievement fully accounts for the poor growth performance of Latin American countries. These results are confirmed in a number of instrumental-variable specifications that exploit plausibly exogenous achievement variation stemming from historical and institutional determinants of educational achievement. Finally, a development accounting analysis finds that, once educational achievement is included, human capital can account for between half and two thirds of the income differences between Latin America and the rest of the world.     

基于J2EE的用户培训管理系统

在信息化的社会中和信息化的企业管理中，如何应用J2EE，从系统需求、据库设计和功能设计与实现三部分．及各个模块的功能、系统的数据要求、性能需求、系统的开发环境等方面全方位分析和介绍了J2EE。     

基于淘宝平台的C2C电子商务交易过程研究

电子商务使交易信息数字化，即消费中对商品的选择演化成对商品信息的理解阅读过程。通过对淘宝交易平台研究，总结出电子商务具有交易数字虚拟化、淘宝、物流、买家和卖家四方交互性、高效低交易成本特征。同时对交易的五个阶段——唤起需求、信息对接、比较选择、购买决策和购后评价的信息化后点进行分析。研究显示，C2C电子商务激活了中小企业的活力，中小企业的低成本、高灵活性优势得到更大发挥，同时激发了消费者个性消费的回归。     

面向工业产品外型概念设计系统的研究

为了实现一个基于手绘草图且具备友好交互界面支持概念的设计系统,文章根据该系统需要完成设计不同的功能,采用分不同模块进行系统分析与设计,包括草绘设计环境的设计模块、二维笔画识别与草图规整模块、图形显示模块。本系统克服传统CAD设计工具的特点,结合现有的草图设计技术,构建二维草图技术体系。     

中国C2C电子商务模式研究:以淘宝网为例

随着我国相关基础设施的完善,中国C2C电子商务得到了快速发展。阿里巴巴创立的淘宝网在短短的几年时间里跃居行业榜首,得益于其建立了符合中国国情的电子商务模式和成功的商业战略。但令人尴尬的是其一直没有找到合适的赢利模式,这是中国C2C电子商务商业模式的普遍尴尬。     

Coming out of the shadows? Estimating the impact of bureaucracy simplification and tax cut on formality in Brazilian microenterprises

This paper evaluates the impact of a program of bureaucracy simplification and tax reduction on formality among Brazilian microenterprises — the SIMPLES program. We document an increase of 13 percentage points in formal licensing among retail firms created after the program when compared to firms in ineligible sectors. The impact on retailers is robust to a series of tests. We find no impact on construction, transportation, services and manufacturing sectors.     

校园C2C网站发展的SWOT分析及模式探讨

近几年,随着电子商务的飞速发展和校园网覆盖率的提高,高校大学生网上购物已经成为一种主流.本文介绍了校园电子商务C2C网站的概念,运用SWOT分析方法对其实施的可行性进行了探讨,最后指出了其发展的意义及发展模式.