The Performance of the Mantel-Haenszel Procedure Across Samples and Matching Criteria

This study examined the reliability of the Mantel-Haenszel indexes across different samples of test takers as well as across sample sizes and investigated whether these indexes are robust to item context effects. Mathematics data from the Second International Mathematics Study (SIMS; 1985) for U.S. eighth-grade students were analyzed. The results suggest that the MH D-DIF is robust to item context effects. However, larger sample sizes than those used in this investigation (N = 141-167 for the focal group) may be necessary to obtain stable estimates from the Mantel-Haenszel procedure.     

Who are Rural Students? How Definitions of Rurality Affect Research on College Completion

Research in Higher Education - Given a revived national discourse about rural populations, more educational research on rural students is necessary, including ways that rural students transition to...     

Understanding student pathways in context-rich problems

This paper describes the ways that students’ problem-solving behaviors evolve when solving multi-faceted, context-rich problems within a web-based learning environment. During the semester, groups of two or three students worked on five physics problems that required drawing on more than one concept and, hence, could not be readily solved with simple “plug-and-chug” strategies. The problems were presented to students in a data-rich, online problem-based learning environment that tracked which information items were selected by students as they attempted to solve the problem. The students also completed a variety of tasks, like entering an initial qualitative analysis of the problem into an online form. Students were not constrained to complete these tasks in any specific order. As they gained more experience in solving context-rich physics problems, student groups showed some progression towards expert-like behavior as they completed qualitative analysis earlier and were more selective in their perusal of informational resources. However, there was room for more improvement as approximately half of the groups still completed the qualitative analysis task towards the end of the problem-solving process rather than at the beginning of the task when it would have been most useful to their work.     

Tracking New Directions in the Evaluation of Postgraduate Supervision

This article focuses on the evaluation of thesis supervision and highlights the vast range of problem areas presently documented as significant areas of concern for both graduate students and their supervisors. Additionally, the authors report on a study completed in 1995, which surveyed all Australian universities about current evaluative practices in postgraduate supervision. The conclusion of this study was that the conduct of such evaluations appears to be minimal and is primarily designed to obtain an indicator of the general health of a university's postgraduate supervision rather than to foster improved supervisory practices. As part of the same study, the authors conducted University faculty-based student and supervisor focus groups. Key issues emerging from these focus groups were: (1) the importance of relational aspects of supervision as the student communicates over the long term with one or more supervisors; (2) the importance of systematic feedback, monitoring, and evaluation to the supervisory process; and (3) the lack of strategies to facilitate this evaluative feedback process. On the basis of these findings, the authors designed evaluative strategies to facilitate regular ongoing feedback between students and supervisors.     

A portrait of academic life:

The process of constructing A Portrait of Academic Life web resource has included careful evidence gathering and analysis of student performance necessary to assess learning and give useful feedback to increase the students’ ability to use information effectively in education. The students, too, develop self-assessment and reflective skills as they create online research portfolios. The online resources model new technologyenhanced strategies for teaching and learning that support standards-based teacher education programs in higher institutions. Other artifacts contained in A Portrait of Academic Life include digital video vignettes of students actively completing course assignments and reflecting on the learning process, and instructor reflections on teaching strategies to improve learning outcomes. As a culminating course activity, students showcase their online research portfolios at a gallery walk. The students were tremendously excited to present the wealth of information they have so carefully collected using the powerful technology tools available for their use in the teacher education program at Towson University. The innovation and originality presented in the form of student online research portfolios offered fresh perspectives to the honored guests. Likewise, it will enormously help students and faculty to see examples of the process of transforming traditional research papers into rich, informative online research portfolios.     

Ideological composition of the classroom: testing the effects of polarization on perceptions of open classroom climate among students in five countries

Abstract

This quantitative study tests the relationship between ideological classroom composition and perceptions of open classroom climate. Using data from the 2016 International Education Association’s International Civic and Citizenship Study, the study uses latent class analysis and multilevel regression modelling across five countries. First, latent class analysis identified students as low or high socioeconomic status. To assess ideological polarization, the gap between support for gender equality and ethnic rights was calculated between groups. Finally, a multilevel regression model measured the relationship between ideological polarization and students’ perception of open classroom climate. Across three countries, results found negative associations between increased polarization and perception of an open classroom climate. Additional testing identified that polarization modified the relationship between student socioeconomic status and perceptions of open classroom climate in Croatia.     

基于BERT嵌入BiLSTM-CRF模型的中文专业术语抽取研究

专业术语的识别与自动抽取对于提升专业信息检索精度,构建领域知识图谱发挥着重要基础性作用。为进一步提升中文专业术语识别的精确率和召回率,提出一种端到端的不依赖人工特征选择和领域知识,基于谷歌BERT预训练语言模型及中文预训练字嵌入向量,融合BiLSTM和CRF的中文专业术语抽取模型。以自建的1278条深度学习语料数据为实验对象,该模型对术语提取的F1值为92.96%,相对于传统的浅层机器学习模型(如左右熵与互信息算法、word2vec相似词算法等)和BiLSTM-CRF深度神经网络模型的性能有较为显著的提升。本文也给出了模型应用的具体流程,能够为中文专业术语库的构建提供实践指南。     

议会选举后的吉尔吉斯斯坦政局前景

吉尔吉斯斯坦目前面临政治危机、经济危机和民族关系危机:中亚首任女总统奥通巴耶娃面临的主要困惑俄罗斯答应提供支持,但许多承诺还未兑现;外债已达到24.99亿美元;南部一直不稳。议会选举引发许多问题,不同部族之间尚未学会谈判之道,达成妥协恐怕不易。因此爆发新的冲突的可能性是存在的。     

对口支援新形势下新疆资源开发的民生科技研究

新疆拥有丰富的资源,然而环境和生态系统也非常脆弱;新疆在进行资源开发的同时也对环境和生态造成极大的破坏,出现了许多民生问题。在全国对口援疆的新形势下,新疆如何利用民生科技改善民生是亟待解决的问题。文章阐述了新疆资源开发的现状及其导致的民生问题,提出了解决的对策。     

Adolescents’ Friendships,Academic Achievement,and Risk Behaviors: Same-Behavior and Cross-Behavior Selection and Influence Processes

This study examined to what extent adolescents’ and their friends’ risk behaviors (i.e., delinquency and alcohol use) hinder or promote their academic achievement (grade point average [GPA]), and vice versa. Longitudinal data were used (N = 1,219 seventh- to ninth-grade adolescents; M_age = 13.69). Results showed that risk behaviors negatively affected adolescents’ GPA, whereas GPA protected against engaging in risk behaviors. Moreover, adolescents tended to select friends who have similar behaviors and friends’ behaviors became more similar over time (same-behavior selection and influence). Furthermore, although same-behavior effects seemed to dominate, evidence was found for some cross-behavior selection effects and a tendency in seventh grade for cross-behavior influence effects. Concluding, it is important to investigate the interplay between different behaviors with longitudinal social network analysis.