基于网络环境的研究生英语教学模式研究

传统的非英语专业研究生英语教学模式已不能适应为社会培养创新复合型人才的需要,对其进行改革势在必行。文章以建构主义学习理论和语言输入与输出理论为基础,构建了一种利用互联网资源辅助研究生英语课堂的教学模式,目的旨在提高非英语专业硕士研究生的英语交际能力。     

少数民族高考加分政策的公正性探究

少数民族高考加分政策实施多年,其公正性屡遭质疑,根本原因在于对该政策的根据缺乏深入而系统的认识。事实上,理性约定和平等原则构成其法律基础,循环累积因果论和帕累托最优为其提供经济学上的理论依据,唯有从这两方面厘清该政策的正当性根据,方可消除种种分歧以及在执行和实施过程中的异化和不合理现象。     

大都市服务经济发展的劳动力因素——基于从业人口数据模型的分析

本文在对比分析纽约、东京两个国外大都市服务经济发展的一般规律和劳动力变动特征基础上,以服务业从业人口结构和规模的历史数据作为切入点,对比分析上海服务业的发展状况,指出上海与纽约、东京服务经济发展的差距及存在的主要问题。并进一步构建了基于从业人口数据回归分析的服务经济发展预测模型,运用该模型对上海市未来服务经济从业人口的比重进行预测．分析表明上海的服务业发展正处于加速增长期,并仍将保持快速发展的势头,按此速度到2020年其从业人数比重可达80％;要实现上海服务经济的健康、快速发展应采取积极的人才引进战略和人口政策。     

The sustainability of Egan’s Skilled Helper Model in students’ social work practice

This paper investigates the nature of students’ learning of the Egan Skilled Helper model in enabling them to develop collaborative communication skills which place service-users at the centre of decision making. The paper is a follow-up to an earlier paper which found that the Egan model was helpful to students as a communication and problem management tool and that they had transferred their learning into practice. The current study involves seven students from the first study and examines whether their knowledge and skills from learning the model in year one have been sustained two years later during their third year practice placement. A key finding is that participants were continuing to use most stages of the model (with the exception of challenging skills) with service-users in a variety of settings. Further findings are that the model is still useful in situations where goals are set by social workers rather than by service-users; and that it is the utilisation of role-play when learning the model which most embeds skills. The implications of these findings for skills training are discussed together with suggestions for further focus.     

Foreign aid and domestic taxation: multiple sources,one conclusion

There are influential studies that argue that foreign aid displaces domestic tax revenue when it is given in the form of grants. These claims are based on data that are deeply problematic: several different sources are amalgamated into one dataset, with no apparent checks on compatibility. In this article, a variety of econometric strategies are used to overcome these issues of data quality. The resulting weight of evidence points to a modest but positive effect on the part of foreign aid generally on domestic tax revenue. Fears over a negative effect for aid grants appear unwarranted, and are accounted for by the inappropriate use of data or endogeneity issues.     

我国城市休闲化发展质量的评价研究

城市休闲化是当代城市发展中的一个新课题。本文结合我国城市休闲化发展的实际状况,通过构建由公共基础、消费能力、产业能力和特色资源等4方面指标组成的城市休闲化质量测评体系,对我国27个省会城市、4个直辖市和5个计划单列市的发展质量进行比较全面和客观的质量测度与数据分析。研究表明,我国城市休闲化质量在整体上处于较低的发展程度。     

关于“中国道路”争论中的两个问题

近年来,随着中国经济的持续快速发展,关于中国模式、中国道路的问题引起了人们的广泛注意,也存在着巨大的分歧和争论。其实,讨论中国道路,需要有一种世界历史的大视野,需要从中华民族走向现代化的历史大尺度来审视。基于这种大视野和大尺度,有利于对我们所取得的成绩,所走过的曲折道路、所处的历史阶段、所面临的诸多难题及其成因,进行冷静的反思和理性的考察,形成清醒的认识和科学的定位,从而能够合理地科学地谋划中国的未来发展。     

Modeling the impact of supra-structural network nodes: The case of anonymous syringe sharing and HIV among people who inject drugs

Networks are well understood as crucial to the diffusion of HIV among injection drug users (IDUs), but quasi-anonymous risk nodes - such as shooting galleries - resist measurement and incorporation into empirical analyses of disease diffusion. Drawing on network data from 767 IDUs in Bushwick, Brooklyn, we illustrate the use of calibrated agent-based models (CABMs) to account for network structure, injection practices, and quasi-anonymous transmission in shooting galleries. Results confirm the importance of network structure and actor heterogeneity to the magnitude and speed of HIV transmission. Models further demonstrate that quasi-anonymous injections in shooting galleries increase the speed of HIV diffusion across the whole network and have the greatest impact on HIV seroconversion levels for IDUs at the network periphery. Shooting galleries are shown to be transmission hubs that operate independently of traceable structural ties, linking otherwise unconnected network components. CABMs potentially increase understandings of HIV diffusion dynamics by infusing computer simulations with empirical data.     

The source of Black-White inequality in early language acquisition: Evidence from Early Head Start

I compare language learning trajectories for Black and White children over the first 3 years of life using data from the Early Head Start Research and Evaluation study (EHSRE) in order to determine the timing and source of divergence in early language skill. Results indicate that that while controlling for racial differences in family background and a measure of the home language environment cannot entirely account for disparities in language acquisition, interactions between age, race and maternal education, and between race and a time-varying measure of the home language environment play a significant role. I show that returns to parental education and the home language environment, in terms of language learning, are higher for White children than their Black peers. Specification checks confirm that these results are robust to alternate definitions of child language and the home language environment, and that no interactions between race, age and any of the other covariates are significant. I discuss possible explanations for these race specific education gradients, including measurement error and test bias. In addition, I address relevant empirical issues in estimating language growth with respect to linguistic inputs and the home language environment.