部分高校在校研究生参加体育锻炼项目情况及影响因素

为了解在校研究生参加体育锻炼项目及其影响因素,为研究生体育活动的开展提供科学依据,运用问卷调查等方法对全国40处院所的在读研究生进行了调查。调查发现研究生对体育项目的选择在整体上具有广泛性,球类是研究生最喜爱的体育锻炼项目;研究生在体育锻炼项目的选择上呈现一种无奈状态;研究生在体育项目的选择上呈现出性别差异;场地情况、体育组织、体育指导等客观因素是解决他们参加体育锻炼问题的瓶颈。     

论高校英语测试改革与题库建设

学业成绩测试是评价学生学习和发展水平的重要手段，多年来这类考试在命题、考试实施和评分等方面存在着许多问题，给英语教学和评估带来一定的负面影响。     

浅谈《监督条例》的基本特征

《中国共产党党内监督条例(试行)》是我党成立以来制定的第一部党内监督法规,它总结了党内监督实践的丰富经验,吸收和确认了党内监督理论发展的最新成果,成为党内监督思想和监督理论走向系统化的一种“物化“即“制度化“形态.     

浅述标准参照测验的编制

本文通过标准参照测验的研究,以编制标准参照测验的理论为依据,以项目反应理论指导,结合操作系统的考试科目给出了标准参照测验的编制过程。     

基于项目约束的关联规则挖掘方法的研究

关联规则挖掘的核心问题是算法的效率和伸缩性,这就产生了基于约束的关联规则挖掘方法。关联规则挖掘中除了支持度和信任度外的约束外,最基本的是项目约束。本文总结和归纳了含有项目约束的关联规则挖掘的分类,并在算法Apriori的基础上,介绍了基于项目约束的关联规则的挖掘算法D irect。     

基于XML的主观题自动批阅系统知识库构建研究

介绍了主观题自动批阅系统(简称AATS)知识库在整个系统中的角色及其功能需求;阐述了具体领域学科的知识特点,提出按学科功能模块分类的树状结构模式来组织知识库,并把义项作为知识库的基本组成单位,进而定义知识库义项的概念表达式为一个有序四重组;给出AATS知识库的XML文档的DTD文件。实验表明,AATS知识库的这种结构组织模式可使主观题自动批阅的准确率大大提高。     

项目反应理论下等值方法——在Samejima模型下,用比准则求解等值系数

本文首先介绍了项目反应理论的优势、项目反应模型及一些等值的方法,然后详细用R方法对Samejima等级反应模型进行处理和模拟,以检测其误差及优劣性.     

Automated estimation of item difficulty for multiple-choice tests: An application of word embedding techniques

Pretesting is the most commonly used method for estimating test item difficulty because it provides highly accurate results that can be applied to assessment development activities. However, pretesting is inefficient, and it can lead to item exposure. Hence, an increasing number of studies have invested considerable effort in researching the automated estimation of item difficulty. Language proficiency tests constitute the majority of researched test topics, while comparatively less research has focused on content subjects. This paper introduces a novel method for the automated estimation of item difficulty for social studies tests. In this study, we explore the difficulty of multiple-choice items, which consist of the following item elements: a question and alternative options. We use learning materials to construct a semantic space using word embedding techniques and project an item's texts into the semantic space to obtain corresponding vectors. Semantic features are obtained by calculating the cosine similarity between the vectors of item elements. Subsequently, these semantic features are sent to a classifier for training and testing. Based on the output of the classifier, an estimation model is created and item difficulty is estimated. Our findings suggest that the semantic similarity between a stem and the options has the strongest impact on item difficulty. Furthermore, the results indicate that the proposed estimation method outperforms pretesting, and therefore, we expect that the proposed approach will complement and partially replace pretesting in future.     

Assessing risk of commercial sexual exploitation among children involved in the child welfare system

The objective of this study was to assess item characteristics indicative of the severity of risk for commercial sexual exploitation among a high-risk population of child welfare system involved youth to inform the construction of a screening tool. Existing studies have discerned factors that differentiate Commercial Sexual Exploitation of Children (CSEC) victims from sexual abuse victims, yet no research has been conducted to discriminate which items in a high risk population of youth are most predictive of CSEC. Using the National Survey of Child and Adolescent Well-Being (NSCAW) cohorts I and II, we examined responses from 1063 males and 1355 females ages 11 and older, over three interview periods.A 2-parameter logistic Item Response Theory (2 PL IRT) model was employed in order to examine item performance as potential indicators for the severity of risk for CSEC. Differential Item Functioning (DIF) analysis was conducted in order to examine potential differences in item responses based on gender. Modeling strategies to assess item difficulty and discrimination were outlined and Item Characteristic Curves for the final retained items were presented. Evidence for uniform DIF were present within items that asked about runaway, any drug use, suicidality, and experiencing severe violence. Results from this study can inform the construction of a screening instrument to assess the severity of risk for experiencing CSEC.     

项目教学法在电大计算机网络课程中的应用

传统的计算机网络课程教学以教师在课堂上教,学生听的教学模式已经不能适应实用型计算机人才培养的需要。在教学中引入项目教学法,可以充分调动学生的学习主动性,从而使学生达到学以致用的目的。文章结合计算机网络课程的特点,探索了项目教学法在电大计算机网络课程教学中的应用。