Applying the Rule Space Model to Develop a Learning Progression for Thermochemistry

We used the Rule Space Model, a cognitive diagnostic model, to measure the learning progression for thermochemistry for senior high school students. We extracted five attributes and proposed their hierarchical relationships to model the construct of thermochemistry at four levels using a hypothesized learning progression. For this study, we developed 24 test items addressing the attributes of exothermic and endothermic reactions, chemical bonds and heat quantity change, reaction heat and enthalpy, thermochemical equations, and Hess’s law. The test was administered to a sample base of 694 senior high school students taught in 3 schools across 2 cities. Results based on the Rule Space Model analysis indicated that (1) the test items developed by the Rule Space Model were of high psychometric quality for good analysis of difficulties, discriminations, reliabilities, and validities; (2) the Rule Space Model analysis classified the students into seven different attribute mastery patterns; and (3) the initial hypothesized learning progression was modified by the attribute mastery patterns and the learning paths to be more precise and detailed.     

The role that mathematics plays in college- and career-readiness: evidence from PISA

Many studies have found a strong relationship between the mathematics students study in school and their performance on an academic or school mathematics assessment but not on an assessment of mathematics literacy (ML). With many countries, like the USA, placing emphasis on finishing secondary education being mathematically literate and prepared for college or career, this raises the question about the relationship between the mathematics studied in school and any ML students may have. The Programme for International Student Assessment (PISA) ML assessment is embedded in real-world contexts that provide an important window on how ready students are to tackle the situations and problems that await them whether they intend to pursue further education beyond high school or intend to go directly into the labour force. In this paper, we draw upon the PISA 2012 data to investigate the extent to which the cumulative exposure to rigorous mathematics content, such as that embedded in college- and career-ready standards, is associated with ML as assessed in PISA. Results reveal that both exposure to rigorous school mathematics and experiencing the instruction of this mathematics through real-world applications are significantly related to all the real-world contextualized PISA ML scores.     

论审美直觉在爱因斯坦科学创造活动中的作用

作为20世纪的风云人物,爱因斯坦以他在物理学领域的非凡创造而为世人所瞩目。关于他的创新奥秘,多年来人们从众多的角度,进行过广泛的分析。文章试图从审美直觉这一独特视角,就创新动力、创新方向和创新检验三个层面,全面剖析其在爱因斯坦理论创造中的作用。     

Banach空间混合型积分-微分方程初值问题的唯一解

在不使用任何紧型条件的假设下 ,得到Banach空间中一类非线性混合型积分 -微分方程初值问题的唯一解、解的迭代逼近序列以及误差估计     

改革教育见习的思考与实践

通过对传统的教育见习诸多弊端的调查研究，提出改革教育见习的新方案。将教育见习提到学科教学论理论课之前开展，为学习教学论提供感性认识，提高学科教学论课的教学效果；明确教育见习的目的要求，且见习任务作业化，管理程序化，从而提高师范生观察的深广度、思考的深刻性；提高师范生的教学素质，增强其从教意识和教师使命感。     

基于平衡计分卡的高校行政管理部门绩效指标体系构建

利用平衡计分卡中部门指标分解的工具——指标分解矩阵表,以高校学生工作处为例,将高校整体办学目标分解为部门具体绩效指标,总结出制定针对高校不同行政管理部门的绩效指标的一般方法,并提出高校行政管理部门考评实施的新思路——关注内部利益相关者。     

Internet流量与负载均衡的研究

Load and traffic balancing for the Internet are analyzed. An intelligent domain name system(DNS) policy for the control and management of content distribution networks (CDN) is presented. An CDNs network based Urtitech IntelliDNS is built, and performance of the network in realizing traffic and load balancing is measured. It is proved that CDNs provide a valuable service and the methods are feasible.     

大学生德育素质现状研究

剖析学生道德素质现状,探究形成成因,提供解决思路,以达到全面推进德育素质教育之目的。     

对外汉语教学的柔性原则

对外汉语教学柔性原则的提出，首先基于语言教育理论以及与这些理论密切相关的心理学理论和教育学理论。同时也考虑到目前汉语的使用状态和近几年各国留学生来华学习汉语在目的上和层次上的变化。这一原则主要体现在对外汉语教学的编码系统，如正音、纠错等一些教学环节，这一原则运用得得当与否，往往能直接影响到教学的成败。     

试论现代企业组织结构的发展趋势

知识经济、网络经济时代的来临．经济全球化的进一步发展．市场需求的变化，使企业经营的外部环境出现了新的变化。企业组织结构只有适应日益复杂的外部环境变化，才能实现企业经营目标。扁平化、网络化、虚拟化、柔性化、工作团队成为现代企业组织结构变革的基本趋势。