Coping with Technological Change: The Role of Ability in Making Inequality so Persistent

This study provides an explanation to the evolution of wage inequality over the last 30 years and supports this explanation with evidence. A faster rate of technological progress introduces new unknown elements at the workplace. The need to cope with the unknown accentuates the role of ability and thus increases wage inequality within and between education groups. Inasmuch as education is an irreversible investment project the rise in within group inequality BOOSTS UP the rise of between group inequality. Guided by this theory we turn to the PSID for evidence. Using parents' education to approximate child's ability we show the following set of results: (a) Controlling for education of the child, parents' education contributed much more in the 1980s to his wage growth than in the 1970s. (b) The correlation between the parents' and the child's education increases from the 1970s to the 1980s. (c) The return to college education for an individual with no ability rents did not change—it remains steady at the 23 percent. (d) Facts (a)–(c) CANNOT be attributed to the impact of parent's income. It is parents' education and not parents' income that is more relevant for son's economic outcomes in the 1980s.     

浅议自媒体视域下高校学生管理工作创新思考

近年来,随着网络技术的飞速发展和移动互联工具在大学生中的迅速普及,无网不在、每日必网迅速成为90后大学生基本的生活方式,学生管理工作受到更加严峻的挑战。本文通过对自媒体平台工具差异化比较研究,结合高校的具体情况,提出了运用自媒体工具推进学生管理工作创新的具体举措。     

多地生产型船企物资配送存在的风险问题及其对策研究

通过对造船企业的生产特点以及物资配送现状的分析,从物资入库验收、生产计划调整、物资配送过程、资源配置要求及余料统筹利用等多方面反映了多地生产型船企物资配送目前存在的主要问题与风险,并提出相应的对策。     

Empirical Bayes analysis of log-linear models for a generalized finite stationary Markov chain

This article presents the empirical Bayes method for estimation of the transition probabilities of a generalized finite stationary Markov chain whose ith state is a multi-way contingency table. We use a log-linear model to describe the relationship between factors in each state. The prior knowledge about the main effects and interactions will be described by a conjugate prior. Following the Bayesian paradigm, the Bayes and empirical Bayes estimators relative to various loss functions are obtained. These procedures are illustrated by a real example. Finally, asymptotic normality of the empirical Bayes estimators are established.     

The association between two random elements: A complete characterization and odds ratio models

For random elements X and Y (e.g. vectors) a complete characterization of their association is given in terms of an odds ratio function. The main result establishes for any odds ratio function and any pre-specified marginals the unique existence of a corresponding joint distribution (the joint density is obtained as a limit of an iterative procedure of marginal fittings). Restricting only the odds ratio function but not the marginals leads to semi-parmetric association models for which statistical inference is available for samples drawn conditionally on either X or Y. Log-bilinear association models for random vectors X and Y are introduced which generalize standard (regression) models by removing restrictions on the marginals. In particular, the logistic regression model is recognized as a log-bilinear association model. And the joint distribution of X and Y is shown to be multivariate normal if and only if both marginals are normal and the association is log-bilinear.Acknowledgements The author thanks both referees for their helpful comments which improved the first draft of the paper.     

公共项目分配效果评价指标

采用公平化指数、区域协调发展系数和国民收入分配系数，可以评价公共项目的收益在不同人群和区域的分配效果。本文应用以上述评价指标对秦巴项目进行了投资分配效果分析，结果表明该项目对收入分配的公平化和均衡化有较大贡献。     

基于Flexsim的社区蔬菜直销配送流程仿真优化研究

文章以乌鲁木齐沙依巴克区社区蔬菜直销配送流程为仿真对象,运用Flexsim仿真软件对其进行模拟,对配送流程涉及到的关键设备利用率、人员空闲率等数据比较分析,提出社区蔬菜直销配送流程合理的运营模式。     

高校研究生导师学术休假制度刍议

文章对建立导师学术休假的必要性以及我国导师学术休假的现状作了分析,重点介绍了构建导师学术休假制度的实施策略,总结了为建立具有中国大学特色的学术休假制度而需逐步营造的导师学术休假的政策环境。     

高层建筑电气工程供配电系统设计分析

随着社会的不断进步,现代化城市的建设推进速度也得到了迅速发展。高层建筑的高压供配电系统的电气设计在整个电气设计中占据着非常重要的位置,高层建筑电气设计工作人员要结合供配电系统实际的情况构建出具有经济合理、技术先进以及安全可靠的供配电系统,安全可靠的供配电系统设计是对于高层建筑的正常运行是至关重要的。     

西安市《第三套全国中小学生系列广播体操》实施情况的调查分析

《第三套全国中小学生系列广播体操》于2008年9月开始在全国推广,通过对西安市中小学校《第三套全国中小学生系列广播体操》实施情况的分析,指出西安市中小学校《第三套全国中小学生系列广播体操》实施的成功所在;同时分析影响《第三套全国中小学生系列广播体操》实施所存在的一些问题,为更好的促进本套操的实施提出建议性对策。