Convergence in West German Regional Unemployment Rates

Abstract. Differences in regional unemployment rates are often used to describe regional economic inequality. This paper asks whether changes in regional unemployment differences in West Germany are persistent over time. Understanding the persistency of regional unemployment differences helps us to assess how effective regional policy can be. While univariate tests suggest that changes in regional unemployment differences are persistent in West Germany, more powerful panel tests lend some support to the hypothesis that regional unemployment rates converge. However, these tests reveal a moderate speed of convergence at best. Because there is a structural break following the second oil crisis, we also use tests that allow for such a break. This provides evidence for both convergence and quick adjustment to an equilibrium distribution of regional unemployment rates that is, however, subject to a structural break.     

回归诊断在统计数据异常值探测中的应用

近年来有关异常值的理论探讨一直是个热点问题,从回归模型诊断的角度对统计数据中的异常值进行探测与分析,并在基于R语言的基础上,结合具体实例,给出回归诊断在统计数据异常值探测中的应用。     

The regional wage gap in the Spanish hospitality sector based on a gender perspective

In this work we estimate human capital returns in the Spanish hospitality sector using an expanded version of the Mincer wage equation (1974). In addition, wage differences in the main tourist regions are quantified using the wage decomposition of Oaxaca (1973) and Blinder (1973) from a gender perspective. Using data from the 2006 Spanish Wage Structure Survey (Encuesta de Estructura Salarial), all the regions under analysis show lower education returns in the hospitality sector when compared to other private services. The same results are found for the other human capital variables used. There are significant differences in education returns between regions, especially in Catalonia and the Canary Islands. The main wage gap in the Canary Islands and the Madrid region is due to differences in returns in the observed variables, whereas in other regions most of the differences are due to the resources allocated. Furthermore, gender wage differences are found in all the regions. The largest estimated wage gap between men and women occurs in the Balearic Islands followed by Catalonia and the Community of Valencia. In contrast, equality between genders is greater in the Community of Madrid.     

基于系统动力学的研发投资预算研究

研发投入是一种高风险的投资,研发投入过多或过少都不利于企业的发展,而如何在企业资源有限的情况下,合理安排研发投入以获取持续的竞争能力是企业研发管理的重点。应该说,研发投入系统是一种复杂的系统,本文首先对研发投资预算的方法进行了回顾,继而提出了运用系统动力学编制研发投资预算的思路并构建了基于系统动力学的研发投资预算模型,该模型将研发系统分为研发流程、研发团队和现金流等三个子模块并描述了研发投资预算的影响因素及其作用过程,最后,以电子产品为例运用该模型模拟了四种不同研发投资预算方案的效果。     

Investigating regional house price convergence in the United States: Evidence from a pair-wise approach

In this paper we examine long-run house price convergence across US states using a novel econometric approach advocated by Pesaran (2007) and Pesaran et al. (2009). Our empirical modelling strategy employs a probabilistic test statistic for convergence based on the percentage of unit root rejections among all state house price differentials. Using a sieve bootstrap procedure, we construct confidence intervals and find evidence in favour of convergence. We also conclude that speed of adjustment towards long-run equilibrium is inversely related to distance.     

绩效与不足:建国初期农村信用合作社的借贷活动的历史考察——以鄂湘赣三省为中心

农村信用合作社是建国初期农村金融体系的重要组成部分，它的产生是新中国乡村借贷关系转型和现代化的标志之一。信用社借贷有利于农户的生产生活经营，推动了农村经济的恢复与发展，但其也存在一定的缺陷。     

资源配置、R&D投入与标杆水平——来自中国制造业的实证检验

RD资源的投入是企业实现产业升级的重要保障,但关键是RD资源投入多少合适和各企业RD投入的标杆水平如何确定。文章作者将标杆管理运用于RD的资源配置领域,通过建模、评价、及测度分析,确立了最适合企业发展的RD投资的标杆水平,从而为企业在充分利用稀缺资源时,如何达到资源效用最大化,提供了一个学习的标杆。文章以上市公司制造类企业为例,首先构建了评价RD投资标杆水平的模型,进而通过结构方程模型对之进行了测度分析,找出了各行业RD资源投入的标杆水平,最后再进一步利用特征偏离法测算出各企业RD资源投入现状距离标杆水平的差距。