Comparing cumulative index and factor analytic approaches to measuring maltreatment in the National Longitudinal Study of Adolescent to Adult Health     

《Child abuse & neglect》2019

Child maltreatment is a complex and multifaceted construct in need of advanced statistical techniques to improve its measurement. The current study compared the predictive utility of a cumulative index to a factor analytic approach for constructing a measure of maltreatment. Data were from Waves III and IV of the National Longitudinal Study of Adolescent to Adult Health (Wave III: n = 14,800; Wave IV: n = 12,288). As adults, participants retrospectively reported on their childhood experiences of physical abuse, sexual abuse, emotional abuse, physical neglect, supervisory neglect, and social services investigations. Both the cumulative index and a two-factor solution showed evidence of convergent validity, predicting lifetime incidence of homelessness, being paid for sex, and various measures of running away or living apart from biological parents, and prospectively predicting depression, substance use, and criminal behavior. The latent variables, derived from a factor analytic approach, had greater explanatory power for many outcomes compared to the cumulative index, even when controlling for sociodemographic variables. Results suggest that factor analysis is a better methodology than a cumulative index for measuring maltreatment in large datasets when explanatory power for external outcomes is of greatest concern.  相似文献   

高水平射击运动员心理选材指标的研究   总被引：9，自引：1，他引：8  

陈昱 《首都体育学院学报》2003,15(3):95-97

本文通过与射击运动紧密相关的五项心理指标：简单反应时、肩臂动作稳定性、手指本体感、智力、个性等的分析讨论，拟从高水平健将级运动员身上明确其成功潜在的心理因素，服务于运动员的科学选材。  相似文献   

校园网管理信息系统中ASP技术应用     

朱强 《浙江传媒学院学报》2003,10(4):70-72

校园网络系统在学校的教学和管理工作中发挥着越来越重要的作用,本文从当前Internet/Intranet及MIS系统的发展出发,在比较当前流行的数据存取及信息处理技术基础上,阐述TASP的作用与优点及其在校园网信息处理中的应用。  相似文献   

Measuring Search Engine Quality   总被引：12，自引：3，他引：9  

David Hawking  Nick Craswell  Peter Bailey  Kathleen Griffihs 《Information Retrieval》2001,4(1):33-59

The effectiveness of twenty public search engines is evaluated using TREC-inspired methods and a set of 54 queries taken from real Web search logs. The World Wide Web is taken as the test collection and a combination of crawler and text retrieval system is evaluated. The engines are compared on a range of measures derivable from binary relevance judgments of the first seven live results returned. Statistical testing reveals a significant difference between engines and high intercorrelations between measures. Surprisingly, given the dynamic nature of the Web and the time elapsed, there is also a high correlation between results of this study and a previous study by Gordon and Pathak. For nearly all engines, there is a gradual decline in precision at increasing cutoff after some initial fluctuation. Performance of the engines as a group is found to be inferior to the group of participants in the TREC-8 Large Web task, although the best engines approach the median of those systems. Shortcomings of current Web search evaluation methodology are identified and recommendations are made for future improvements. In particular, the present study and its predecessors deal with queries which are assumed to derive from a need to find a selection of documents relevant to a topic. By contrast, real Web search reflects a range of other information need types which require different judging and different measures.  相似文献   

过度运动对大鼠海马脑源性神经营养因子的影响   总被引：3，自引：0，他引：3  

高颀  满君  田野 《北京体育大学学报》2004,27(9):1211-1212

观察过度运动对海马神经元脑源性神经营养因子(BDNF)的影响,探讨过度运动导致的海马神经元形态改变与BDNF的关系.大鼠6周递增负荷游泳运动后取海马制作石蜡切片,采用SABC免疫组织化学染色方法观察BDNF的变化.结果发现:过度运动后大鼠海马发生形态变化,发生结构变化的神经元的BDNF表达增加.  相似文献   

利用三大检索查询收录/引用的方法与技巧   总被引：5，自引：2，他引：3  

韩丽风  刘蜀仁 《现代图书情报技术》2001,17(6):40-42

三大检索工具的各种版本在收录范围、检索性能上各不相同, 著者字段使用方法比较复杂。本文研究了各种版本的差异, 以及具体检索个人文章被收录、引用情况的方法与技巧, 最后介绍其它几种常用于科学评价的检索工具。  相似文献   

利用模板编辑教学网页的简单方法     

孙学让  刘建宏 《天津电大学报》2002,6(2):22-24

网上教学是远程开放教育的主要形式。电大教师应积极投身于网上教学资源的开发和设计。教学网页与其它媒体的课件相比具有科学性强,信息量大,便于操作,及时更新和趣味性、交互性等特点。通过模板编辑简单的教学网页是非专业设计人员实现网上教学的捷径。  相似文献   

网络信息环境下馆藏评价标准的变革   总被引：6，自引：0，他引：6  

郭海明 《图书馆杂志》2003,22(5):22-24

文章以现代图书馆馆藏建设的变革为切入口，评析了传统馆藏评价标准。这些基础上重点探讨了网络信息环境下馆藏评价标准的变革。  相似文献   

网络资源界面整合和AGENT界面实现探讨   总被引：11，自引：0，他引：11  

金更达 《大学图书馆学报》2002,20(1):30-34

网络资源的多样性和异地性,影响了用户对网络资源的有效利用,文章探讨了网络资源界面整合的策略和实现方法及智能型Agent界面的设计思想和实现方法。  相似文献   

论终身教育思想对体育课程改革的影响   总被引：13，自引：0，他引：13  

陈俊钦 《福建体育科技》2003,22(1):39-41

为了适应现代社会的快速发展 ,人类改变了将人生划分为学习和工作两个阶段的观念 ,产生了终身教育的思想。终身教育思想又对教育的组成部分———体育产生影响 ,促使了终身体育思想的产生。终身体育思想对体育课程改革起到十分重要的影响作用 ,主要表现在对体育课程目标、体育教学内容、体育教学模式和体育教学评价等方面改革的影响 ,使改革充分体现了体育课程为终身体育打基础的思想  相似文献