皖北地区犊牛新蛔虫病的调查

对皖北地区的利辛、界首、泗县、风阳四县564头犊牛用饱和食盐水漂浮法进行粪便检查,发现有252头感染丁犊牛新蛔虫,其感染率为44.68%,表现该病症状的有102头,死亡22头,病死率为21.57%.粪便检查中最早发现新蛔虫卵的为l6日龄;各县间阳性率(感染率)差异不显著,而日龄间感染率差异极显著.     

体操教学中运用迁移法效果的研究

体操是一项动作结构复杂多样化而非同期性的运动项目,在体操教学和训练中,运动技能的迁移现象普遍存在。通过分析体操动作技术的内在联系,掌握技能迁移的原理和规律,合理运用一系列手段来促进技能间的积极性迁移,防止或减少消极性迁移的影响,提高体操教学效果。     

论母语在外语学习中的语言迁移

语言迁移是外语学习中普遍存在的一种现象.它分为正迁移和负迁移.正迁移促进外语学习,负迁移则妨碍外语学习.正、负迁移的表现形式和负迁移的排除是本文要探讨的重点.     

一类拟线性椭圆型方程的可解性

本文讨论无界域上的一类拟线性椭圆型方程的正解的存在性,利用山路引理得到了一个存在性结果．     

具有正负系数差分方程解的振动性

考虑一类具有正负系数的差分方程,获得它的所有解振动的充分条件．     

求解奇异线性方程组的双逐次投影法

用双逐次投影迭代法来求解奇异线性方程组,当线性方程组的系数矩阵是对称半正定时,给出了不同情形时有关参量的选取以及相应的算法,并就收敛结果分别与雅可比迭代法和Gauss-Seidel迭代法进行了比较,数值结果表明,该方法对求解奇异线性方程组是很有效的.     

语文综合性学习的生命教育价值取向

综合性学习是新一轮课程改革的一个重要内容,是新课程背景下语文教学改革的一个亮点。语文综合性学习充分体现了语文学习的实践性、综合性、过程性、主体性、阶段性、生成性等六大特点。同时,生命教育价值取向作为对教育本质的一种新认识,不仅实现了工具式教育轴心的转换,而且深化和明确了教育以人为本的真正内涵,表达了本真教育的本质。本文试图通过对生命教育价值观念与综合性学习相整合,提出当前语文综合性学习的生命教育价值取向支持体系。     

从错误分析角度看母语对外语学习的负向迁移

从错误分析角度阐述母语对外语学习的负面影响．以唤起中国英语学习者的语言迁移意识。语言迁移是一个复杂的概念,许多错误的成因是多方面因素作用的结果。学习者应积极利用母语的正面效应,尽量避免其负面影响。促进外语习得进程。     

Taking risks with a growth mindset: long-term influence of an elementary pre-service after school science practicum

In this study, we present the long-term influence of an after school science practicum associated with an elementary science methods course. The practicum or field experience could be considered a community-based service learning programme as it is situated both within and for the community. Study participants included eight third- and fifth-grade teachers who had participated in elementary science methods courses; four of these teachers participated in the after school teaching practicum while four participants experienced a more traditional observation-based elementary science practicum. All of these teachers were in their second or third year teaching which was 3–4 years after taking the methods course. Investigation methods included questionnaires, field observations and semi-structured, individual interviews. Teachers more regularly utilised reform-based teaching strategies and cited the after school teaching practicum as preparing them to use these strategies in their own classrooms. All teachers exhibited a growth mindset to some degree, but the after school practicum participants did demonstrate a wider use of reformed-based teaching strategies and a higher growth mindset. Elementary teachers perceive risk associated with these key aspects of instruction: (1) managing instruction and classroom management, (2) teaching science through guided inquiry, and (3) overcoming adoptions in other ‘mandated’ curriculum like math and reading.     

Children’s levels of contingent self-esteem and social and emotional outcomes

Contingent self-esteem (CSE) describes the degree to which self-esteem is dependent on meeting day-to-day appraisals from oneself and others. This will vary between individuals, ranging from lower to higher CSE. A lower CSE is related to a range of adaptive social and emotional outcomes in adolescents and young adults. This study explores children’s CSE and how this associates with behavioural outcomes. A total of 280 children between the ages of 9 and 11 years completed a composite questionnaire on aspects of their self-esteem and behaviour. Children’s class teachers completed behavioural outcome questionnaires for a random sample of 100 of these children. Based on teachers’ and children’s scores, high levels of global self-esteem were associated with lower CSE and fewer behavioural difficulties. CSE domains of social feedback and physical appearance retained significant associations with behavioural outcomes after controlling for global self-esteem. This may relate to the degree that children depend on the perceived evaluations of others. Implications for educational psychologists are highlighted.