Impact of programming on primary mathematics learning

The aim of this study is to investigate whether a programming activity might serve as a learning vehicle for mathematics acquisition in grades four and five. For this purpose, the effects of a programming activity, an essential component of computational thinking, were evaluated on learning outcomes of three mathematical notions: Euclidean division (N = 1,880), additive decomposition (N = 1,763) and fractions (N = 644). Classes were randomly assigned to the programming (with Scratch) and control conditions. Multilevel analyses indicate negative effects (effect size range −0.16 to −0.21) of the programming condition for the three mathematical notions. A potential explanation of these results is the difficulties in the transfer of learning from programming to mathematics.     

师范生实习前试讲问题探究——以铜仁学院外语系实习生为例

实习试讲是师范生教育的重要环节。师范英语专业学生的试讲在课堂口语、教学理念、团队合作方面存在许多问题。通过对铜仁学院外语系2010级23位学生试讲的研究,注重学生的语音技能训练,采取同课异构的训练模式,有意识地培养学生的合作协调能力和研究性学习能力,能有效地丰富试讲的内涵,提高试讲的实效性,提高学生试讲的实践能力。     

正确定位党与司法的关系——从董必武的司法思想和美国的司法实践谈起

如何正确理解和处理好党的领导与司法机关独立审判之间的关系仍然是人们讨论的热点。本文结合董必武的司法思想和美国的司法实践进行了分析。本文认为,一方面要承认政党对司法有不可避免的影响;另一方面司法的规律要求这种影响要有限度,政党与司法之间应保持一定的距离。因此,我们需要转变观念,推进司法改革,真正实现司法机关独立行使审判权。     

Mediation analysis of an adolescent HIV/STI/pregnancy prevention intervention

Most interventions designed to prevent HIV/STI/pregnancy risk behaviours in young people have multiple components based on psychosocial theories (e.g. social cognitive theory) dictating sets of mediating variables to influence to achieve desired changes in behaviours. Mediation analysis is a method for investigating the extent to which a variable X (e.g. intervention indicator) influences an outcome variable Y (e.g. unprotected sex) by first influencing an intermediate variable M (e.g. self-efficacy to use a condom) and provides a way for empirically validating theoretical hypothesised mediators. In this way, mediation analysis is a critical tool for suggesting which components of complex interventions should be the focus of more efficient and effective interventions in the future. The present study applied multilevel mediation analysis to outcome data from the All4You2! study to begin to examine the relationships between a theory-based HIV/STI/pregnancy prevention curriculum for students attending alternative high schools who were at risk of educational failure. The study targeted psychosocial mediating variables and the primary outcome unprotected sex in the past three months. Results suggest helping young people attending alternative schools identify and avoid exposure to risky situations and improving their self-efficacy to refuse sex should be focal points of future interventions.     

论简易程序案件集中审理视域下说理性起诉书的制作

起诉书是检察院行使刑事追诉权的重要方式,在简易程序案件集中审理的模式下,起诉书的说理性在制作中可能会因为多方面的因素而存在不足。可以在总结司法经验的基础上,通过制定简易程序案件说理性起诉书的制作要求、建立专职公诉人等制度,为说理性起诉书的规范制作提供保障。     

冶金全流程工艺模拟系统实践

本文介绍了一个先进的冶金全流程工艺模拟生产系统,重点介绍了该系统上的主要试验设备以及典型钢种在该系统上的试制过程。该模拟生产系统以先进的试验设备为基础,通过工艺技术开发研究,形成了冶炼、轧制、硅钢和冷轧汽车板等多个试验研究平台,可以完全模拟中厚板现场生产,基本实现了硅钢及型材的模拟生产试验,并可进行相关工艺技术研究,从而满足新产品研发和新工艺技术研究的需要。     

基于“3414”水稻氮磷钾优化配施试验

确定早稻的氮磷钾优化施肥模式,为当地的早稻合理施肥提供科学依据。采用测土配方和"3414"肥料田间试验,建立肥料效应函数和模型,并对模型进行模拟寻优。     

PBL教学法在分析化学教学中的尝试

介绍了PBL教学法,阐述了PBL教学法在分析化学教学中的尝试过程,讨论了实施PBL教学法过程中存在的问题及对策.     

乡村司法的社会结构与诉讼构造——基于锦镇人民法庭的实证分析

乡村司法总是处于一定的社会结构中,特定的社会结构决定了乡村司法的运作模式、形态。通过对社会结构的把握,可以有效地解释并预测人民法庭的运作行为。乡村司法的社会结构包括人民法庭所处的各种关系网络,案件本身的性质、类型,当事人双方的力量对比等。这些因素互相交织,使得法庭诉讼构造呈现出一个倒立的伞状结构。最大限度地限制该诉讼构造出现,则必须从乡村司法的社会结构中寻找突破口。     

对数平均温差中试差法计算

传热操作型计算中,常遇到对数平均温差的试差计算以确定流体的某一个温度。教材中没有讲解如何计算,学生普遍反映不知从哪儿开始进行试差。该研究从试差法的计算步骤和试差范围的确定方法来讲解计算技巧,以便学生掌握和供同行参考。