基于JAVA技术的移动警务系统

现代无线通讯技术的发展使得移动警务系统的实现成为了可能，本文介绍了一个完整的基于JAVA技术的移动警务系统的构建与实现，主要从系统总体设计和系统安全方面提出了完整的移动警务系统的解决方案。     

宋代印刷传媒与诗分唐宋

雕版印刷作为图书传播之媒介,崛起繁荣于右文崇儒之宋代。印刷传媒挟其＂易成、难毁、节费、便藏＂,化身千万,无远弗届之优势,初与抄本、写本竞奇争辉,终则印本取代写本,成为知识传媒之新宠,促使宋代士人之阅读接受更加多元与丰富。印刷术在两宋之传媒效应,传世文献征存不多,笔者拟借镜谷登堡发明活字版印刷术,在中古欧洲改变了阅读环境,影响了接受反应,同时加速古老变革,重组文学领域,征存传统典籍,催生创新体类。凡此,两相对照,皆攸关印刷文化史之探索,堪称创新研究之课题,值得开发讨论。     

Can districts keep good teachers in the schools that need them most?

This study investigates how school demographics and their interactions with policies affect the mobility behaviors of public school teachers with various human capital characteristics. Using data from North Carolina from 1995 to 2006, it finds that teachers’ career stage and human capital investments dominate their decisions to leave public school teaching and school demographic characteristics play a dominant role in intra-system sorting. Schools serving at-risk children struggle to attract and retain teachers with desirable observable characteristics. We find evidence to suggest that across-the-board school-based pay-for-performance policies have small but significant associations with mobility decisions and appear to exacerbate inequities in the distribution of teacher qualifications.     

College selectivity and young adult health behaviors

Large literatures have shown important links between the quantity of completed education and health outcomes on one hand and the quality or selectivity of schooling on a host of adult outcomes, such as wages, on the other hand. However, little research attempts to produce evidence of the link between school quality and health. The paper presents the first evidence in the literature on the potential short and intermediate term effects of attending a selective college on health behaviors during and following college attendance. Using a variety of empirical methods, this paper shows strong evidence that college selectivity reduces tobacco and marijuana use but has small and possibly positive effects on binge drinking. The effects on weight behaviors are suggestive of reduced weight, potentially through diet, but not exercise change.     

Is it where you go or who you know? On the relationship between students, Ph.D. program quality, dissertation advisor prominence, and early career publishing success

Previous research finds that both Ph.D. program quality and relative dissertation advisor prominence are positively related to early-career publishing success. We provide insight into the relative importance of those factors by estimating early-career research productivity functions that: (1) allow relative dissertation advisor prominence to vary while holding Ph.D. program quality constant and (2) allow Ph.D. program quality to vary while holding relative dissertation advisor prominence constant. Results for a sample of 2983 economics Ph.D. recipients suggest that: (1) the estimated marginal effects of relative dissertation advisor prominence do not vary systematically within top Ph.D. programs and (2) students graduating from a program-switching advisor's higher-ranked program publish significantly more than those graduating from his or her lower-ranked program. Combined, these results might suggest that the observed correlation between dissertation advisor prominence and early-career publishing results more from students working with prominent advisors possessing the higher innate potential required to gain admission to top programs rather than strictly because they work with the more prominent advisor.     

The effects of adult literacy on earnings and employment

This paper provides evidence of the effects of adult literacy on individuals’ income and employability in Brazil based on information obtained from the monthly employment survey (PME). The OLS results indicate that after controlling for observable characteristics, there is a 21.25% increase in wages for individuals who become literate; however, there is no significant impact on employability. Moreover, the findings show an 8.1% increase in the probability of being employed in the formal sector. We also explore the longitudinal structure of the dataset to control for unobservable fixed characteristics of individuals. The fixed-effects estimators show smaller effects compared to the OLS estimators. We find that literacy has a 4.4% effect on wages and a 4.3% impact on the probability of being formally employed. The effects are significantly different from zero.     

Educational gaps in medical care and health behavior: Evidence from US Natality data

The US Natality files provide information on medical procedures and health related behavior during pregnancy and childbirth. The data set represents nearly the universe of mothers who give birth in the US, providing the most complete coverage possible of medical care and health behavior among a specific patient population. We document gaps in outcomes by education of the mother and the changes in these educational gaps during 1989-2002.     

Economic returns to education: What We Know, What We Don’t Know, and Where We Are Going—Some brief pointers

The estimation of the economic return to education has perhaps been one of the predominant areas of analysis in applied economics for over 50 years. In this short note we consider some of the recent directions taken by the literature, and also some of the blockages faced by both science and policymakers in pushing forward some key issues. This serves by way of introduction to a set of papers for a special issue of the Economics of Education Review.