The Issue of Range Restriction in Bookmark Standard Setting

This article uses data from a large‐scale assessment program to illustrate the potential issue of range restriction with the Bookmark method in the context of trying to set cut scores to closely align with a set of college and career readiness benchmarks. Analyses indicated that range restriction issues existed across different response probability (RP) values and item response theory (IRT) models if one were to apply the Bookmark procedure using intact test forms. Results also suggested that range restriction may still be present if one had access to additional data from an item bank. This demonstration critically highlights challenges that may exist in some practical applications of the Bookmark method due items not being designed to cover the full range of examinee abilities.     

A Critical Look into the Beuk Standard-Setting Method

One commonly used compromise standard-setting method is the Beuk (1984) method. A key assumption of the Beuk method is that the emphasis given to the pass rate and the percent correct ratings should be proportional to the extent that the panelists agree on their ratings. However, whether the slope of Beuk line reflects the emphasis that panelists believe should be assigned to the pass rate and the percentage correct ratings has not be fully tested. In this article, I evaluate this critical assumption of the Beuk method by asking panelists to assign importance weights to their percentage correct and pass rate judgments. I show that in several cases that the emphasis suggested by the Beuk slope is noticeably different from what one would expect and is inconsistent with importance weight ratings. I also suggest two ways that the importance weights can be used to calculate alternate cut scores, and I show that one of the ways of calculating cut scores using the importance weights leads to larger potential differences in cut score estimates. I suggest that practitioners should consider collecting importance weights when the Beuk method is used for determining cut scores.     

The impact of immediate test score reporting on university students' achievement emotions in the context of computer-based multiple-choice exams

Test-taking is an emotion-laden event for many students. Typically, negative emotions are highest at the start of an examination and are replaced by positive emotions as the exam progresses. The impact of computer-based testing and immediate score reporting on students' emotions has not been examined. In Study 1, we evaluated university students’ emotions at the end of a computer-based exam and found positive emotions more strongly endorsed than negative. In Study 2, we replicated this finding and used a quasi-experimental pre-post design to examine how emotions changed in response to real examination scores. Exam scores presented immediately had significant positive effects on relief, pride, and hope and negative effects on anxiety and shame even after controlling for the corresponding emotion at the end of the exam. The one exception was anger, which was not impacted by examination score. No interaction effects were found.     

高职教育统计专业应注重技能培养

在统计课教学中，要设置基本技能标准，积极改进教学方法，强化实践教学环节，以此来增强学生基本技能，以实现高职学生的培养目标。     

一种新的小型旋臂水池试验台

介绍了自行研制的小型旋臂水池试验台的设计思想、结构形式及其主要技术问题。该试验装置借鉴了通用大型旋臂水池技术，具有结构紧凑、转速高、耗能少、操作简单省时等特点。主要用于模型在水下受力的对比试验，也可承担其它小尺寸模型的水下试验任务。     

Discussion on National Standard GB 6167"Methods for Testing the Performance of Airborne Particle Counter

Classificationofaircleanlinessinanykindofclean roomsandcleanzoneswillbeaccomplishedintermsofconcentrationofairborneparticles .Alightdiscreteair borneparticlecounter (hereafterreferringtoasAPC)isusedtodeterminetheconcentrationofairborneparticlesequaltoandlargerthanthespecifiedsizesatdesignatedsamplinglocation[1,2 ] .Inthepracticalmeasurementofparticleconcentrationincleanrooms,itisfoundthetest ingresultsofparticlenumberinthesameareacountedbydifferentparticlecountersarequitedifferentanduptoanord…     

化学实验教学中的探究教学

通过教学实例分析了化学实验探究教学的一般步骤,指出了实际教学过程中应注意的问题。     

简支梁振动试验分析

通过振动试验,得到了简支矩形等截面梁的挠度和频率随荷载变化的曲线,结果与破损模态静力试验结果一致。     

科技期刊封面设计:基本规范·主要类型·图片获取——以《岩石学报》为例

中国期刊国际化进程日趋加快,期刊封面设计个性化,在一定程度上对于增强刊物对读者的吸引力、推进期刊品牌效应、扩大发行等方面起到重要的作用.通过对期刊封面设计的基本规范、主要类型的阐述,结合实例剖析封面图片应如何获取,分析与说明期刊封面设计所遵循的基本原则、设计理念和构创思路,以期引起相关人员的关注,并为实践和研究提供参考.     

普通话水平测试中的说话刍议

在普通话的水平测试和日常应用中，说话都是最主要的部分。许多人在普通话测试中，在说话时存在着过度紧张、无话可说、带“话把”的情况，导致发挥不理想，成绩上不去，而且还会在日常的应用中出现障碍，影响本人各个方面。自我陶冶性格，进行锻炼，合理抑制，互相学习，是解决问题的有效方法。