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61.
What a Difference Immigration Policy Makes: A Comparison of PISA Scores in Europe and Traditional Countries of Immigration 总被引:4,自引:0,他引:4
Abstract. The purpose of this article is to evaluate the importance of different immigration policies associated with corresponding migration backgrounds, command of national languages and intergenerational mobility, for the PISA school performance of teenagers living in European countries (France, Finland, Germany, United Kingdom and Sweden) and traditional countries of immigration (Australia, Canada, New Zealand and the US). Econometric results show that the influence of the socioeconomic background of parents differs strongly across nations, with the highest impact found for Germany, the UK and US, whereas intergenerational transmission of educational attainment is less likely in Scandinavian countries and in Canada. Moreover, for all countries our estimations imply that for students with a migration background a key for catching up is the language spoken at home. We conclude that educational policy should focus on integration of immigrant children in schools and preschools, with particular emphasis on language skills at the early stage of childhood. 相似文献
62.
第三方逆向物流信息系统分析与设计 总被引:3,自引:0,他引:3
指出信息系统在第三方逆向物流企业中的重要性,分析了第三方逆向物流企业的业务流程和数据传输流程,并提出设计C/S与B/S相混合的第三方逆向物流信息系统的设计方案,并进一步探索了如何通过ASP.NET技术来实现。 相似文献
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64.
Richard J. Murnane John B. Willett Marie-Andrée Somers Claudia Uribe 《The German Economic Review》2005,6(3):309-330
Abstract. The relatively poor average performance of German students on the recent PISA international evaluations of 15- and 16-year-olds' literary skills (2000) and mathematical skills (2003) and the wide variation in performance, with low-income students scoring particularly poorly, have led to calls for reforms of the German educational system. Understanding why students in some classrooms learn more than do those in other classrooms is an important first step in considering alternative reform strategies. Possible explanations include differences in teacher quality, class sizes and peer groups, and also differences among the types of secondary schools that parents select for their children. This paper illustrates a set of techniques that are useful in examining the roles these factors play in predicting why, net of family background and prior achievement, the average achievement of children in some classrooms is much higher than that of children in other classrooms. We illustrate the use of these techniques with a dataset from Bogotá, Colombia, that has two attractive properties. First, some teachers teach multiple classes of students. Second, students are enrolled in schools in two sectors (public and private). Application of the techniques described in this paper could shed light on the reasons why the average academic achievement of German students attending some schools is much higher than that of German students attending other schools. 相似文献
65.
第三方物流企业运作模式分类与特征研究 总被引:6,自引:0,他引:6
以资源整合方式、服务内容、服务范围三个维度为界定依据,对第三方物流企业(TPLs)的运作模式进行了分类,分析了各种模式的主要特征和适用性,并指出了其优劣势和发展前景,为物流企业依据自身特点选择恰当的运作模式类型和发展方向提供了参考。 相似文献
66.
基于大规模定制的供应链设计 总被引:10,自引:0,他引:10
分析了大规模定制面临的挑战和供应链发展带来的机遇,根据供应链的不同功能,结合大规模定制的特点,提出“运用三维并行工程”设计不同的供应链及其供应商与战略伙伴,以实现大规模定制的低成本和快速反应。 相似文献
67.
68.
鲁刚 《技术经济与管理研究》2006,(6):20-22
3G,是英文3rd Generation的缩写,指第三代移动通信技术,相对第一代模拟制式移动通信(1G)和第二代GSM、CDMA等数字移动通信(2G) ,第三代移动通信一般地讲,是指将无线通信与国际互联网等多媒体通信结合的新一代移动通信系统。在中国本土通信市场上, 3G作为下一代商用的移动通信技术越来越近。3G对原有的固网运营商和移动运营商的未来发展的重要性以及对现实业务的冲击,都让运营商不得不高度重视3G市场,并投入大量的精力研究自身的3G发展策略。本文从目前的固网运营商及移动运营商各自的优势,对3G业务、用户市场的粗浅分析中,力求得出固网运营商可能的3G发展策略。 相似文献
69.
梅君 《经济理论与经济管理》2003,(4):37-42
有效的资产重组和公司并购,能够优化企业的资源配置,提升企业的竞争能力。我国上市公司的重组并购是在我国特定的制度和政策环境下产生发展的,必须正视我国资本市场重组并购中存在的问题,鼓励实质性重组并购,这是证券监管当局必须承担的责任。 相似文献
70.
Mark Gradstein 《European Economic Review》2004,48(4):797-803
This paper considers a setting where a resource such as education budget is to be distributed among agents. The latter differ in their ability to make use of the resource, and the issue is that of determining the allocation rule whereby the individual shares of the resource (may) depend on their relative efforts of obtaining it. The paper's focus is on endogenous determination, through voting, of the degree of meritocracy in the resource allocation system, which determines the marginal productivity of one's effort. It is found that a meritocratic system is expected to be supported by highly productive individuals and opposed by those with low productivity. When the decision making becomes less elitist and involves broader participation of population groups the support for meritocracy decreases. 相似文献