负相协和负象限相依关系的研究     

张明珠 《许昌学院学报》2007,26(5):22-24

在可靠性中,可以利用随机变量之间的相协关系来刻画随机变量之间的相依性,但相协的概念并不完善,针对这个问题,提出了负相协的定义,给出了负相协的性质,最后对负相协和负象限两种相依关系进行了研究.  相似文献   

NCME 2007 Presidential Address: The Concordance Table: An Invitation to Misuse Test Scores     

Daniel R. Eignor 《Educational Measurement》2008,27(4):30-33

This article discusses a particular type of concordance table and the potential for test score misuse that may result from employing such a table. The concordance that is discussed is typically created between scores on different, nonequatable versions of a test that share the same or close to the same test title. These concordance tables often appear in the context of relating scores on computerized adaptive and paper‐and‐pencil versions of the same test. When such a table is presented in a complete point‐by‐point fashion, relating each reported score on the scale of the new version of the test to a reported score on the scale of the old version of the test, test score users will typically treat the table as if it represented an equating of scores between the two versions, and directly replace scores on the new version of the test by scores on the old version. This clearly represents a misuse of the test scores. Suggestions for avoiding this misuse of test scores from concordance tables are provided.  相似文献   

关于射击飞碟多向"指点"位置的分析     

张永杰  谭宗亮  张文杰 《体育科技》2005,26(4):45-47

对飞碟射击多年实践中压枪后"指点"位置进行分析,认为在多向飞碟射击中,高指点位置射击充分利用眼的视野位置,比低指点位置射击更有利于提高成绩,并分析了最佳高指点位置的范围,为训练提供科学理论依据.  相似文献   

Detecting Misspecification in Mean Structures for Growth Curve Models: Performance of Pseudo R 2s and Concordance Correlation Coefficients     

Wei Wu  Stephen G. West 《Structural equation modeling》2013,20(3):455-478

This study examined the performance of 4 correlation-based fit indexes (marginal and conditional pseudo R ²s; average and conditional concordance correlations) in detecting misspecification in mean structures in growth curve models. Their performance was also compared to that of 4 traditional SEM fit indexes. We found that the marginal pseudo R ² and average concordance correlation were able to detect misspecification in the marginal mean structure (average change trajectory). The conditional pseudo R ² and concordance correlation could detect misspecification when it occurred in the conditional mean structure (individual change trajectory) or in both mean structures. Compared to the SEM fit indexes, the correlation-based fit indexes were more robust to sample size but were less robust to data properties such as magnitude of population mean and measurement error. Theoretical and practical implications of the results and directions for future research are discussed.  相似文献   

面向教学的英汉双语平行语料库的创建及其应用   总被引：1，自引：0，他引：1       下载免费PDF全文

邓飞 《惠州学院学报》2005,25(4):73-76

较之于其它大型的或专门用途的英汉双语平行语料库, 个人构建的面向教学的英汉双语平行语料库在大学英语教学中有着独特的优势, 更适合推广使用。大量例证已经表明, 双语平行语料库在大学英语教学上有着广阔的使用前景和潜在的开发价值。  相似文献   

美德伦理的现代出路     

郭媛 《昆明师范高等专科学校学报》2007,29(3):48-50

美德伦理以美德和人格为基础的道德评价理论是难以令人满意的,这是与其强调主体而忽视行为、强调美德而忽视规范的理论特点分不开的。规范伦理能够在西方社会统治如此长的时间,其重要原因在于它们是建立在对现代社会空前复杂的社会结构、社会关系和社会实践特征的深刻洞察之上的。因此,合理的选择应当是规范伦理与美德伦理的有机整合或统一,最终走上建立规范美德伦理学之路。  相似文献   

数据驱动学习--英语教学模式的新动向   总被引：6，自引：0，他引：6  

王金铨 《扬州大学学报(高教研究版)》2004,8(6):88-90

数据驱动学习充分利用了网络和语料库资源，改变了以往传统的结论式的单向灌输的教学模式，为学习者营造了真实的语言环境，减少了在过程教学法中容易产生的中介语石化的现象。能够有效激发学习者的学习兴趣，培养他们自主学习和自我解决问题的能力，达到辅助英语教学的最终目的。  相似文献   

Assessment of competence in clinical reasoning and decision‐making under uncertainty: the script concordance test method     

Stephan Ramaekers  Wim Kremer  Albert Pilot  Peter van Beukelen  Hanno van Keulen 《Assessment & Evaluation in Higher Education》2010,35(6):661-673

  相似文献   

论科学技术与社会主义发展的同步性──兼论社会主义发展前景     

唐莉 《安徽广播电视大学学报》1999,(3)

从历史角度探讨科学技术与世界历史、社会主义发展的同步性；重点分析近代三次科技革命与社会主义三次飞跃的内在联系。知识经济时代，社会主义必将具有广阔的发展前景。  相似文献   

检索系统在词汇教学中的应用(英文)     

韩郑郑 《宁波教育学院学报》2014,(1):123-125

本文试将检索系统(concordance programs)应用于针对英语初学者的ESL教学中。具体探究词汇教学中的俩类难点:一类是有不同用法的同义词教学;另一类是当先验语法与语料库里的数据相违背时的教学。本文使用美国当代英语语料库(COCA)中的数据以试解决上述疑难。  相似文献