The Choice of Response Probability in Bookmark Standard Setting: An Experimental Study     

Peter Baldwin  Melissa J. Margolis  Brian E. Clauser  Janet Mee  Marcia Winward 《Educational Measurement》2020,39(1):37-44

Evidence of the internal consistency of standard-setting judgments is a critical part of the validity argument for tests used to make classification decisions. The bookmark standard-setting procedure is a popular approach to establishing performance standards, but there is relatively little research that reflects on the internal consistency of the resulting judgments. This article presents the results of an experiment in which content experts were randomly assigned to one of two response probability conditions: .67 and .80. If the standard-setting judgments collected with the bookmark procedure are internally consistent, both conditions should produce highly similar cut scores. The results showed substantially different cut scores for the two conditions; this calls into question whether content experts can produce the type of internally consistent judgments that are required using the bookmark procedure.  相似文献   

A Critical Look into the Beuk Standard-Setting Method     

Adam E. Wyse 《Educational Measurement》2020,39(1):52-60

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.  相似文献   

冈底斯中段尼木斑岩铜矿田的K-Ar、^40 Ar/^39 Ar年龄：对岩浆-热液系统演化和成矿构造背景的制约          下载免费PDF全文

李金祥秦克章  李光明杨列坤 《中国科技期刊研究》2007,23(5):953-966

青藏高原冈底斯斑岩成矿带不同于经典的产于岛弧和大陆边缘的斑岩铜矿,而形成于后碰撞挤压向伸展转变期,显示了极好的成矿前景.本文对冈底斯中段尼木矿田白容、厅宫和冲江斑岩铜矿区斑岩体进行了系统研究,确定出斑岩体演化和侵入序列为：似斑状二长花岗岩→成矿二长花岗斑岩→石英闪长玢岩→花岗闪长斑岩.K-Ar和^40 Ar/^39 Ar年代学研究获得白容矿区似斑状二长花岗岩中角闪石的K-Ar年龄为16.9±2.4Ma;石英闪长玢岩中黑云母的K-Ar年龄为12.3±0.2Ma、^40 Ar/^39 Ar坪年龄为12.5±0.2Ma;花岗闪长斑岩中黑云母的K-Ar年龄为11.5±0.2Ma、^40 Ar/^39 Ar坪年龄为12.4±0.2Ma;厅宫矿区石英闪长玢岩中黑云母的K-Ar年龄为13.8±0.2Ma、^40 Ar/^39 Ar坪年龄为14.9±0.2Ma;花岗闪长斑岩中黑云母的K-Ar年龄为13.5±0.3Ma、^40 Ar/^39 Ar坪年龄为14.2±0.2Ma,这些年龄表明：石英闪长玢岩晚于似斑状二长花岗岩,略早于花岗闪长斑岩.成矿与二长花岗斑岩有关,其侵位时间晚于似斑状二长花岗岩,早于石英闪长玢岩和花岗闪长斑岩.尼木癍岩铜矿田这种复式杂岩体较充分的分异演化有利于含矿热液的集中与逐渐富集成矿.白容斑岩铜矿蚀变矿化二长花岗斑岩的蚀变绢云母的K-Ar年龄为11.8±0.2Ma,^40 Ar/^39 Ar坪年龄为12.0±0.1Ma,代表了中低温蚀变和矿化末期的年龄.白容矿区绢云母化带的蚀变年龄与石英闪长玢岩和花岗闪长斑岩的黑云母^40 Ar/^39 Ar年龄基本一致,与厅宫矿区辉钼矿Re-Os年龄及石英闪长玢岩和花岗闪长斑岩的黑云母^40 Ar/^39 Ar年龄同样基本一致,暗示两个矿区石英闪长玢岩和花岗闪长斑岩的岩浆结晶冷却与成矿二长花岗斑岩后期热液成矿时间上有重叠.结合前人年龄数据大致确定出白容矿区岩浆-热液活动时限为0.5～5Ma,厅宫为4Ma,冲江为4.5Ma.尼木矿田成矿斑岩^40 Ar/^39 Ar年龄晚于冈底斯碰撞后第一次快速隆升时间≈21Ma,15Ma冈底斯中段NS向正断层开始活动,表明含矿斑岩体可能侵位于地壳加厚、冈底斯山大规模隆升到一定程度后出现弱伸展环境的构造背景下,即斑岩铜矿形成于从南北向挤压隆升到东西向伸展初始发育的过渡构造背景.  相似文献   

Regulating research: The problem of theorizing community on LambdaMOO     

Michele White 《Ethics and Information Technology》2002,4(1):55-70

This article considers ongoing attempts to regulate or even ban researchon LambdaMOO. Industry, private individuals, and research institutionshave supported MOOs, or multi-user object-oriented worlds. The earlyresearch on MOOs by Pavel Curtis, who was one of the key designers,suggests that these systems are part of a research project and have beenresearched since they were originally designed. However, a group ofMOOers have grown increasingly uncomfortable about the quotation ofcertain texts on web sites and academic journals and the potentiallypanoptic effect of research. Some of these practices have breachedcommunity conventions. Yet, such things as testing, invisibly watching,freely quoting characters, and ignoring certain rules have always beenaspects of the system. The dispute over research ethics and theparticipation of varied researchers within this setting indicate thatdiverse values are represented among MOOers and different expectationsexist about how the MOO might be a community. The term ``community' andthe presumption that online characters are people may have alsoincorrectly informed the research debate by making it seem that onlinesettings provide immediate access onto spaces, bodies, and individuals.Many MOOers may believe that research threatens individuals andcommunity. However, critical histories and analysis are needed in orderto explain the system to new users and encourage alternative forms ofdevelopment. Such work can only be produced if online systems are opento research and critique.  相似文献   

开辟医学影像学期刊品牌专栏"图文讲座"   总被引：5，自引：3，他引：2  

汪晓  汪玲 《编辑学报》2006,18(2):127-128

探讨创办医学影像学期刊"图文讲座"新栏目的经验.认为以图文讲座为品牌栏目,不仅适应了"读图时代"受众心理和阅读取向,而且显示了该类专业杂志的突出特色,有利于期刊国际化的交流,提升了核心竞争力.  相似文献   

中美高等工程教育课程设置比较   总被引：3，自引：0，他引：3  

白逸仙 《中国科技信息》2006,(17):212-214,216

20世纪90年代以来,美国工程教育掀起了“回归工程”的浪潮,提出建立“大工程观”。要想实现大工程观所要求的高等工程教育改革,必须在课程体系和内容的改革上下功夫。通过对中美高等工程教育在政府和市场对课程设置的影响程度,课程体系建设,学科之间联系以及对学生能力培养等方面的比较,可以看出,美国在高等工程教育的课程设置和教学改革方面积蒜了丰富的经验,值得我国高等工科院校借鉴。  相似文献   

Goal setting and planning for Norwegian students with and without intellectual disabilities: Wishing upon a star?     

Veerle Garrels 《欧洲特需教育杂志》2017,32(4):493-507

Being able to set personal high-quality goals and having the skills to make plans for goal attainment are associated with higher performance, increased student involvement at school, and higher levels of self-determination. This study examines self-reported goals of 83 Norwegian elementary and lower secondary school students with and without intellectual disabilities. The study also looks into whether students feel that they learn goal setting and planning skills at school. Findings suggest that students are able to identify process and product goals for themselves. Most students set academic goals for themselves, followed by career goals and sports-related leisure time goals. No significant differences were found between typically developing students and students with intellectual disabilities. While roughly two-thirds of all students reported that they feel encouraged to set goals for themselves at school, almost 60% of all students expressed that they did not learn planning skills at school. This finding indicates the need to assist teachers with instructional materials for how to teach students these important skills for self-determination.  相似文献   

Agenda setting in multilateral contexts: the example of the Decade of Education for Sustainable Development     

Sugata Sumida 《Globalisation, Societies & Education》2017,15(4):381-396

A number of papers have focused on UN policy formulation processes, but little is known about how particular issues come to policy-makers’ attention in the first place. This very early stage of policy formulation, called agenda setting, remains under-researched and more so in multilateral contexts. Applying Kingdon’s multiple streams model to the example of the Decade of Education for Sustainable Development (DESD), this study analyses the trajectory of the policy from being just an idea to the point of being placed on the UN agenda. This paper goes on to argue that there are three conditions that supported the successful trajectory of DESD: a funding-backed policy entrepreneur, policy oligopoly, and a highly predictable policy window. Its theoretical contribution is to fill the gap between current studies and theories by presenting an analysis of one policy in a multilateral context.  相似文献   

知识产权担保融资的法律探讨   总被引：1，自引：0，他引：1  

欧阳白果 《湘潭师范学院学报(社会科学版)》2004,26(5):40-42

知识产权担保融资是现代企业重要的融资渠道。产权界定与资产评估是知识产权担保融资的基本前提和环节。知识产权出质既要遵从权利质权设定的一般规范,又应当遵循知识产权法关于权利转让的特别规定。知识产权质权的效力,集中体现于出质人义务的履行及某些权利受到一定的限制,以及质权人权利的行使及其在某些方面得到的扩张。我国《担保法》应当赋予出质人对出质知识产权享有充分的实施权。  相似文献   

《直播新乡》栏目的技术保障     

潘洁  魏海  赵康 《平原大学学报》2007,24(5):125-127

根据电视台新推出的一档大型直播栏目的特点,从专业技术保障的角度,阐述了从方案设计到设备运行调试的过程。重点说明了虚拟演播室的原理、虚拟演播室的选购及运行和调试,指出目前虚拟演播室所存在的问题以及解决办法。  相似文献