After a Disaster: Lessons in Survey Methodology from Hurricane Katrina

In 2005, the National Science Foundation funded a number of projects to study the impact of Hurricane Katrina. The current article provides an overview of several research approaches used to conduct post-Katrina research. Each method had some advantages and disadvantages. The post-disaster context meant that experience from traditional survey methods often did not apply. Comparisons of advantages and disadvantages associated with each sampling method serve to inform future post-disaster research and illuminate the limits of classical research methods.     

Who gets over the training hurdle? A study of the training experiences of young men and women in Britain

Using longitudinal data from the British National Child Development Study, this paper examines gender differences in the determinants of work-related training. The analysis covers a crucial decade in the working lives of this 1958 birth cohort of young men and women – the years spanning the ages of 23 to 33. Hurdle negative binomial models are used to estimate the number of work-related training events lasting at least three days. This approach takes into account the fact that more than half the men and two thirds of the women in the sample experienced no work-related training lasting three or more days over the period 1981 to 1991. Our analysis suggests that reliance on work-related training to improve the skills of the work force will result in an increase in the skills of the already educated, but will not improve the skills of individuals entering the labor market with relatively low levels of education. JEL classification: C25, I21, J24. Received February 9, 1996/Accepted August 14, 1996     

Conducting research using web-based questionnaires: Practical,methodological, and ethical considerations

The use of the internet for social science research is becoming increasingly common. This paper outlines practical, methodological and ethical issues for researchers to consider when using web-based questionnaires. This is illustrated by consideration of the authors' own experience of conducting a study into the phenomenon of self-harm.     

煤矿工资管理信息系统的设计与实现

工资管理信息系统目前国内已有多种且各具特色,文章所介绍的工资管理信息系统具有很高的自动结转性及自动计算、统计、查询、报表处理等功能,还介绍了数据库程序设计技巧、实现方法及系统功能,非常适合于煤炭企业的工资管理系统的开发.     

财务评价在项目评估中的作用

财务评价是在国家现行财税制度和价格体系的条件下 ,通过一系列报表计算出评价指标 ,用以考核建设项目财务上是否可行的一种科学而行之有效的方法 ,本文讨论了它在建设项目评估中的作用     

教学管理中提高数据采集效率的研究与实践

结合光电读卡机和教学管理数据采集的特点 ,分析了光电读卡技术用于采集教学管理数据的可行性 ,提出了设计教学管理采集数据信息卡应遵循的四个原则以及应用软件应注意的两个基本问题 ,并简述了近几年的实践及效果。     

基于有效预测区域的模糊数据关联

多目标多传感器跟踪系统由数据关联和目标状态估计两部分组成,数据关联是多目标跟踪系统研究的核心。数据关联和目标状态估计两部分既有一定的独立性又有密切的联系,而将两部分合理地结合对提高跟踪系统的性能是重要的。该文以跟踪目标的有效预测区域为依据,利用基于Mahalanobis距离的模糊均值聚类方法解决数据关联问题,在一定程度上将数据关联和目标状态估计两个不同的过程相结合,仿真计算说明了其有效性。     

论会计信息的质量保证体系

会计信息在国民经济管理中具有重要作用 ,针对当前存在会计秩序混乱 ,会计信息失真等问题 ,提出应对会计信息功能予以重新认识 ,并论述了会计信息质量标准体系由以下几项构成 :客观性、可比性、一贯性、相关性、明晰性、及时性     

关联规则在学生成绩分析中的应用

采用关联规则的apriori算法，对医科大学学生四年中各门课程的成绩进行分析，从而发现课程之间的联系和基础课程对专业课程的影响，为教务部门安排课程提供参考。     

Acceleration of the Multiple-Try Metropolis algorithm using antithetic and stratified sampling

The Multiple-Try Metropolis is a recent extension of the Metropolis algorithm in which the next state of the chain is selected among a set of proposals. We propose a modification of the Multiple-Try Metropolis algorithm which allows for the use of correlated proposals, particularly antithetic and stratified proposals. The method is particularly useful for random walk Metropolis in high dimensional spaces and can be used easily when the proposal distribution is Gaussian. We explore the use of quasi Monte Carlo (QMC) methods to generate highly stratified samples. A series of examples is presented to evaluate the potential of the method.