基于随机游走增强型矩阵分解的混合服务预测

随着Web服务数量的急剧增长,如何在大量功能相似但非功能属性各异的服务中选择满足用户个性化需求的服务是亟需解决的问题。基于QoS（Quality of Service）预测的服务推荐方法成为研究热点。然而, QoS数据的稀疏性和“冷启动”问题阻碍其发展。针对当前主流的QoS预测模型预测精度不高和收敛速度较慢等问题,提出一种基于随机游走模型和矩阵分解技术的混合QoS预测方法。该方法首先基于矩阵分解获得用户及服务的潜因子矩阵,并将用户潜因子矩阵转化为用户相似度矩阵;然后基于用户相似度矩阵并结合Web服务的网络位置信息,使用随机游走模型提高用户相似度矩阵的准确性;最终结合协同过滤方法与矩阵分解模型进行QoS预测。在真实数据集上实验,结果表明,与当前主流的QoS预测方法相比,该方法具有更高的预测精度和效率。     

任务、学习者互动和二语习得

从认知角度和社会文化角度综述学习者互动和二语习得之间关系的研究,讨论各种类型的交际任务在互动和习得研究中的作用,提出今后互动和习得的研究应采用更宽泛的角度,将语言因素和社会因素综合起来考虑。     

What was out of the frame? A dialogic look at youth media production in a cultural diversity and educational context in Chile

This article accounts for an experience of digital storytelling workshops with indigenous adolescents in Chile, and proposes a theoretical and methodological approach to analyze digital creations with a dialogic and ethnographic point of view. Based on this, it discusses the possibilities of digital media production as a strategy for the self-expression of children and adolescents, particularly immersed in unequal and ethnically diverse educational contexts. The specific case of two Mapuche girls reveals complex ways of organizing and positioning their voices, where ‘girl power’ and ‘post-girl power’ discourses are relevant, but not so their ethnicity. The results show that television, with its main audiovisual genres, styles and stereotypes, appears clearly on the teenagers’ creations, while the absence of Mapuche signs along the creation process and also into the digital stories seems to be related with two important features of the Chilean educational system: ethnic inequalities and its fierce attachment to neoliberalism.     

体裁教学法在大学英语听力教学中的应用

随着体裁及体裁分析理论研究的不断深入,人们逐渐认识到体裁教学法是提高学生英语各方面能力的一个有效途径。在理论分析的基础上,尝试把体裁教学法运用到大学英语的听力教学中,以促进大学英语听力教学。     

从事物特性的相互作用本质看运动生物力学研究方法与测试手段的发展

从任何事物的特性都是由相互作用相互联系的的事物双方共同决定的这一哲学原理来看,运动生物力学的研究方法和测试手段发展具有主动性,它能够从运动中的人体引申出这样或那样的特性来,能够引申出何种特性不仅取决于运动中的人体,也取决于研究方法和测试手段,从而推动运动生物力学学科的发展。     

增强高校德育的实效性

新的形势对高校德育的实效性提出了迫切要求。高校德育工作要树立德育为先、提倡渗透、以人为本、贴近生活的新德育理念,站在科学发展观的高度,与时俱进,不断探索增强高校德育实效性的新途径。     

探究教学在教育学教学中的运用--教育学教学中的探究教学与研究型教师培养研究之一

研究型教师必须具备丰富的学科专业知识、扎实的教育专业理论、技能和可持续性发展的学习、研究能力.培养研究型教师,探究教学不失为一种行之有效的教学方法.教育学教学中尤其要运用探究教学方法.要用开放的教学方式来学习教育理论,用强化实践的教学方式来培养学生的研究能力.     

谈谈当代大学生的审美教育

通过对大学生审美方面存在问题的分析，探讨审美教育对大学生的影响作用，寻求对大学生进行审美教育的有效途径。     

Social exclusion and inequality in higher education in China: A capability perspective

Following calls for further research in education inequality beyond input and output measures, especially with a qualitative approach, and building on the implications of capability deprivation on equality (0375 and 0380), we extend the findings of 0305, 0310, 0315 and 0320 capability approach to higher education (HE). This article employs social exclusion theory as the analytical framework to examine educational inequalities in China posed by the HE admission system in Post-Mao era. This paper is driven by certain key motivations and makes a significant contribution to the extant literature. Firstly, the paper seeks to outline a usable definition of social exclusion in the context of HE enrolment. Following this, 0305, 0310, 0315 and 0320 capability approach is adopted for the first time as a theoretical construct to examine the situation facing HE in China. Sen's approach facilitates an appraisal of the process of exclusion in HE enrolment. The importance of the capability approach is that it allows one to recognize different needs and choices confronting different social groups by distinguishing between different types of social exclusion in this area. Finally, this information is used to evaluate responses which are available to the existing issues within the current Chinese HE enrolment mechanism i.e. that the mechanism is fundamentally flawed and risks reducing, rather than enhancing, capability by excluding certain groups of students from fair competition in terms of access.     

The local embeddedness of graduates’ education-job mismatch and of lifelong learning policies for its overcoming

ABSTRACT

The article’s aim is twofold: to outline the specificity of the embeddedness approach and to explore the embeddedness of graduates’ education-job mismatch and the formation of lifelong learning policies. The study is based on both quantitative and qualitative data, obtained from the Bulgarian Universities Ranking System, and from interviews with experts and young adults engaged in a lifelong learning programme. The analysis uses multilevel modelling. It also relies on mapping lifelong learning policies in Bulgaria through a thematic content analysis. The article argues that the misbalances for highly educated people on the labour market mirror structural problems in the economy and the educational system. The argument is reflected in the historical and structural embeddedness of graduates’ education-job mismatches and the lifelong learning policies applied to overcome this. The results show that the extent of vertical education-job mismatch depends on the different profiles of higher education institutions and professional fields; they also demonstrate different ways in which the embeddedness approach could help shed new light on, and critically assess, lifelong learning policies. The findings reveal a differentiation between national and local levels of lifelong learning policy towards graduates and that regional policies are actively embedded in local contexts.