半无穷区间二阶三点边值问题的解

利用Leray-Schauder不动点定理结合Green函数的性质,研究半无穷区间二阶三点边值问题的解.     

Geographic Variations in Cost of Living: Associations With Family and Child Well‐Being

The effects of geographic variations in cost of living and family income on children’s academic achievement and social competence in first grade (mean age = 86.9 months) were examined, mediated through material hardship, parental investments, family stress, and school resources. Using data from the Early Childhood Longitudinal Study–Kindergarten Cohort (N = 17,565), higher cost of living was associated with lower academic achievement. For poor children only, higher cost of living was also detrimental to parental investments and school resources. Parental investments and school resources were more strongly associated with achievement for lower income than higher income children. Results suggest that cost of living intersects with income in meaningful ways for family and child well‐being and should be accounted for in the poverty measure.     

Cultural clash and educational diversity: Immigrant teachers' efforts to rescue the education of immigrant children in Israel

Thousands of immigrants who arrived from the former USSR during the past decade have drastically changed the Israeli educational system. However, constituting about 12% of the potential labour force of educators, immigrant teachers represent less than 5% of the actual teaching staff; 69% of immigrant students in the 17-year-old age cohort do not possess a matriculation certificate. This article presents the results of research that studied probably the most prominent effort to rescue the education of immigrant children, namely the Mofet system, which was founded by a group of immigrant teachers in 1991. Today's Mofet runs more than 20 supplementary evening schools around the country and five day-schools. The development of the Mofet group for the advancement of education is one of the most significant examples of the consolidation trends among the Russian-speaking intelligentsia in Israel. However, the authors argue that though Mofet's success is directly linked to the general education system's failure to meet immigrants' needs, it does not express Russian immigrants' desire for socio-cultural segregation.     

Automatic item generation of probability word problems

Mathematical word problems represent a common item format for assessing student competencies. Automatic item generation (AIG) is an effective way of constructing many items with predictable difficulties, based on a set of predefined task parameters. The current study presents a framework for the automatic generation of probability word problems based on templates that allow for the generation of word problems involving different topics from probability theory. It was tested in a pilot study with N = 146 German university students. The items show a good fit to the Rasch model. Item difficulties can be explained by the Linear Logistic Test Model (LLTM) and by the random-effects LLTM. The practical implications of these findings for future test development in the assessment of probability competencies are also discussed.     

以SLA理论为指导,在化学学科中进行双语教学

SLA理论作为新兴的语言学说,指出了影响学习者的外在因素和内在因素,对学习者学习第二语言是有帮助的。本文根据对化学本科生学习外语的问卷调查,提出以SLA理论为指导,在化学部分学科中进行双语教学的教学策略和教学建议。     

公共图书馆馆员胜任力模型构建研究

[目的/意义] 构建公共图书馆馆员胜任力模型,对于公共图书馆馆员的招聘、培训、考核及职业发展具有重要意义。[方法/过程] 采用文献分析法、开放式问卷法和专家访谈法收集胜任特征指标并编制频次及行为表现表,在此基础上设计结构化调查问卷,以SPSS 13.0为数据分析工具,通过实证研究和统计分析方法,研究公共图书馆馆员胜任力特征的构成,构建公共图书馆馆员胜任力模型,并在此基础上进一步分析影响模型各维度胜任特征的因素。[结果/结论] 研究表明:公共图书馆馆员胜任力模型由基本知识和业务能力、相关学科知识、计算机运用能力、职业态度和服务精神、情绪适应能力、组织沟通能力6个维度组成,职业态度和服务精神对工作绩效有显著影响。