广义线性模型极大似然估计弱相合性的数值模拟

广义线性模型是经典线性模型的自然推广,它是一类应用广泛的统计模型.选择Probit模型,利用matlab编程,通过数值模拟的方法验证了广义线性模型的极大似然估计的弱相合性.     

Performance factors and immigration. Impact of individual and school variables / Factores de rendimiento e inmigración. Impacto de variables individuales y escolares

The way schools address migratory movements has a direct impact on integration and social cohesion, making the in-depth study of factors that affect the lower performance of immigrant students in comparison with non-immigrants essential. Using a methodology based on random coefficient models, this paper analyses the differential effect of individual level and school level variables on the estimation of mathematical competence in non-immigrant and immigrant populations. Data are extracted from an educational assessment programme carried out in the Basque Autonomous Community. The sample consists of 16,981 students with an average age of 13.7 years, of which 1,369 are immigrant students. The results reveal that individual and family-level variables show significantly higher impact on student performance than school-level variables. The article concludes by emphasizing the importance of investing in policies to support diversity that work at family level, as a means to achieve fuller equity.     

输变电GIS系统中电力线路要素模型库的建立

在输变电GIS三维可视化过程中,建立电力线路要素三维模型库是非常重要的。本文给出了建立三维模型库的方法。使用3DMAX作为建模工具,并用OSG做为底层的渲染基础框架设计了8种电力线路模型原型,提出了动态模型实列的概念和分页加载渲染的方法,制定了数据存储格式与标准,使得GIS系统能够直接从模型库中调用线路杆塔模型,实现了输电线路的三维全景仿真。     

解读《钟形罩》中埃斯特·格林伍德的“理性疯癫”

《钟形罩》是美国自白派女诗人西尔维娅.普拉斯创作的唯一一部长篇小说。长期以来,众多学者用女性主义的视角来解读主人公埃斯特.格林伍德的形象,认为小说记录了埃斯特从自我疏离到疯癫,直至重建真实自我的心路历程。然而埃斯特是否真正疯癫却没有受到应有的关注。文章将从父权社会的压制和女性榜样的缺失两个层面来分析埃斯特精神崩溃的原因,从而揭示她的疯癫只是父权文化给予的标签,并不是其精神状态的真实反映。这种所谓的＂疯癫＂是20世纪50年代觉醒的美国女性对性别政治的反抗形式,是一种充满反叛精神的＂理性疯癫＂。     

Theoretical and methodological implications of associations between executive function and mathematics in early childhood

Despite agreement about the importance of executive function (EF) for children’s early math achievement, its treatment in correlational studies reflects a lack of agreement about the theoretical connection between the two. It remains unclear whether the association between EF and math operates through a latent EF construct or specific EF components. Specifying the correct measurement model has important theoretical implications for the predicted effects of EF interventions on children’s math achievement. In the current study, we tested whether associations between EF and math operate via a latent EF factor, or via specific EF components using data from a large, nationally representative sample. We then replicated these same analyses with a meta-analytic database drawn from ten studies that collected measures of children’s EF and math achievement. Our results lend support to explanations that a single EF factor accounts for most of the EF component-specific associations with math achievement. We discuss theoretical and methodological implications of these findings for future work.     

知识建构评价研究

随着知识建构研究的兴起,知识建构的评价研究也将成为其中的一个研究重点。首先讲述知识建构的涵义、特征,在此基础上详细解析知识建构的评价原则,最后对知识建构评价模式进行梳理。     

纵向数据线性混合模型中M估计的渐近正态性

对纵向数据的线性混合模型yk=Xkβ＋Ckτk＋ek用Fisher得分迭代法得到了参数的M估计（稳健估计）,并在一系列的正则条件下,证明了参数M估计的渐近性质．     

雪压坚贞一片心犹恋风流纸墨香--谈关露和她的小说

关露女士的个人生活和创作道路都是十分坎坷的。她在二十世纪三四十年代这一特殊历史背景中凸现出来,以自己的艺术个性表达着对社会和人生的认识和理解。她是当时文坛上著名的进步女诗人,活跃的左翼女作家。由于生存状况的变化带来的新要求,关露悄然迈出了诗坛,移步于小说和散文的园地。特殊的工作性质和复杂的生活环境,强化了关露文学作品迂回婉约、感伤沉郁的柔美风格。研究关露的小说可以发现其讲述角度的特点以及糅合几种体裁形式而成一篇作品的特点等。关露的《新旧时代》是一部优秀的自叙传小说,研究这部作品,对于了解关露本人的思想发展和作品的艺术特点有一石二鸟的作用。     

主客观信息融合的港口综合能源系统评价指标体系

为建立绿色港口,实现港口的节能环保,对港口综合能源系统(port integrated energy system,PIES)的评价方法进行研究,提出一种主客观信息融合的PIES评价指标体系,将主观评价与数理统计模型进行结合,兼顾评价过程中的主客观因素,并采用基于马氏距离的统计检验方法对评分矩阵进行修正,实现对PIES的全面评价。通过青岛港董家口港区的调研数据,验证该方法的有效性。     

‘The life of crime does not pay; stop and think!’: the process of co-constructing a prototype pedagogical model of sport for working with youth from socially vulnerable backgrounds

Purpose: This study discusses the process of co-constructing a prototype pedagogical model for working with youth from socially vulnerable backgrounds.

Participants and settings: This six-month activist research project was conducted in a soccer program in a socially vulnerable area of Brazil in 2013. The study included 17 youths, 4 coaches, a pedagogic coordinator and a social worker. An expert in student-centered pedagogy and inquiry-based activism assisted as a debriefer helping in the progressive data analysis and the planning of the work sessions.

Data collection/analysis: Multiple sources of data were collected, including 38 field journal/observation and audio records of: 18 youth work sessions, 16 coaches’ work sessions, 3 combined coaches and youth work sessions, and 37 meetings between the researcher and the expert.

Findings: The process of co-construction of this prototype pedagogical model was divided into three phases. The first phase involved the youth and coaches identifying barriers to sport opportunities in their community. In the second phase, the youth, coaches and researchers imagined alternative possibilities to the barriers identified. In the final phase, we worked collaboratively to create realistic opportunities for the youth to begin to negotiate some of the barriers they identified. In this phase, the coaches and youth designed an action plan to implement (involving a Leadership Program) aimed at addressing the youths’ needs in the sport program. Five critical elements of a prototype pedagogical model were co-created through the first two processes and four learning aspirations emerged in the last phase of the project.

Implications: We suggest an activist approach of co-creating a pedagogical model of sport for working with youth from socially vulnerable backgrounds is beneficial. That is, creating opportunities for youth to learn to name, critique and negotiate barriers to their engagement in sport in order to create empowering possibilities.