Discrete Choice Modeling in Education: An Innovative Method to Assess Teaching Practices     

Vasilis Grammatikopoulos  Athanasios Gregoriadis  Michalis Linardakis 《Educational Measurement》2019,38(3):46-54

Self‐reported measures are an easy, time‐efficient, and low‐cost way to collect research data compared to other assessment methods. They are, however, characterized by several limitations regarding the quality and the clarity of the data they produce, especially when they are implemented in education. The main purpose of the current study was to use a method called discrete choice modeling (DCM) in education, in order to develop a self‐reported instrument that will reduce the bias for socially desirable responses and to assess teachers’ practices in physical activity. DCM method has the ability to overcome the respondents’ tendency to answer in a socially desirable way. A nationally representative sample of 531 Greek early educators participated in this study and were administered a self‐assessment questionnaire based on DCM. Results showed that the DCM based newly developed instrument manages to assess effectively educators’ practices and provided evidence of the applicability of the method in education. Further implications and future recommendations regarding the effective application of DCM in education are discussed.  相似文献   

基于二模复杂网络的隐性知识发现方法研究——以潜在药物靶点挖掘为例     

李东巧  陈芳  韩涛  杨艳萍  王学昭  王燕鹏  Cynthia Liu  Yingzhu Li 《图书情报工作》2020,64(21):120-129

[目的/意义] 通过构建二模复杂网络模型，揭示隐藏在海量文献中的隐性知识。[方法/过程] 通过NetworkX复杂网络工具包，依据任意两个节点的共现关系构建二模复杂网络模型；对网络模型中节点的共现关系进行加权，计算网络的拓扑信息并进行AP聚类，提取节点间的直接关系；采用AUC方法对AA、JC、加权改进的wAA和wJC等4种链路预测算法进行评价，遴选出最合适的预测算法，并对复杂网络的隐性关系进行预测分析。[结果/结论] 以潜在药物靶点挖掘为例进行的实证研究结果表明，wAA链路预测算法为最优的链路预测算法；二模复杂网络模型、指标和方法体系在美国化学文摘社数据库中的药物靶点挖掘中具有一定的有效性。下一步计划在其他数据库中或其他研究领域中进行尝试，以进一步验证该模型的通用性和有效性。  相似文献   

Parents’ son preference,childhood adverse experience and mental health in old age: Evidence from China     

《Child abuse & neglect》2019

BackgroundSon preference is an enduring phenomenon in China and may often be related to childhood adverse experiences. According to a life-course perspective, adverse experiences during a childhood period may have a long-term effect on mental health in later age. However, little is known about this relationship between parents’ son preference, childhood adverse experiences and adulthood mental health in China.ObjectiveThe study aims to evaluate the association of parents’ son preference and individual mental health in old age in China. The mediating role of childhood adverse experiences was also estimated.Participants and settingThe China Health and Retirement Longitudinal Study (CHARLS) 2015 combined with CHARLS life history survey was analyzed (N = 11,666).MethodsMental health was measured by a shortened modification of the Center for Epidemiologic Studies Depression scale including seven items, and higher scores indicated worse mental health status. A four-step mediating model was applied.ResultsRespondents growing in families with son preference had on average 0.75 (P < 0.001) points higher on the mental health scale than their counterparts, and the effects were consistent for both males and females. Childhood adverse experiences measured by physical maltreatment, emotional adverse experiences and witnesses of inter-parent violence mediated the relationship between parents’ son preference and individual adulthood mental health by 47.87%. For females, physical maltreatment and emotional adverse experiences explained the most parts of health effects of parents’ son preference, whereas witnesses of inter-parent violence was the most influential mediator for males.ConclusionParents’ son preference led to adverse childhood experiences, which influenced mental health in adulthood.  相似文献   

一种基于图卷积自编码模型的多维度学科知识网络融合方法     

李慧  胡吉霞 《图书情报工作》2020,64(18):114-125

[目的/意义] 针对包含单一类型知识单元的知识网络难以全面反映学科知识结构的问题，提出一种从多维度进行知识网络结构融合的方法，为学科领域知识结构挖掘提供借鉴。[方法/过程] 利用LDA及TF-IDF方法抽取学科知识单元，然后运用语义相似度和关键词共现分析方法构建3个学科知识子网络：主题网络、关键词网络和实体网络，并采用空间节点传递对齐方法对齐子网络节点，接着设计基于图卷积操作的自编码模型对知识节点进行表示，最后通过计算余弦相似度重构学科知识网络。[结果/结论] 实验部分以人工智能领域为例，构建融合主题、关键词和实体的学科知识网络并展开分析，实验结果表明，本文所提方法能有效地揭示学科领域研究内容和知识结构，为学科知识发现与组织研究提供有益参考。  相似文献   

网络环境下高校图书馆信息服务模式   总被引：9，自引：0，他引：9  

葛郁葱 《大学图书情报学刊》2003,21(4):69-70,77

简要阐述网络环境对高校图书馆信息服务的影响，指出图书馆的服务模式要适应网络环境就必须调整馆藏结构，建设网络化的信息资源；积极拓展图书馆传统服务，创新现代化情报咨询服务，还要充分发挥图书馆的教育职能。  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   

浅谈网络环境下的信息检索效率   总被引：5，自引：0，他引：5  

龚蛟腾 《四川图书馆学报》2003,(4):8-10

网络环境下，信息检索效率主要是指检全率和检准率，它们之间存在互逆、互顺等关系。许多因素影响着检索效率，文章提出了提高检索效率的各种策略，并且展望了其发展趋势。  相似文献   

高校田径运动会管理系统网络化设计   总被引：1，自引：0，他引：1  

张来明 《山东体育科技》2003,25(2):27-29,26

根据普通高校学生和教工田径运动会的特点，用Visual Basic和SOL Sever设计高校田径运动会网络管理系统。依据高校田径运动会管理的一般原则和程序，采用灵活的界面设计，系统具有可操作性强易于理解掌握的特点。  相似文献   

开展数学建模教学促进基础教育改革     

潘胜洪 《扬州教育学院学报》2003,21(3):78-80

随着基础教育课程改革的深入,在中小学开展数学建模教学已经成为一项重要内容。本文试图从数学建模教学的意义、教学环节等几方面揭示数学建模教学对于基础教育改革的重要性。  相似文献   

网络信息资源建设的问题及管理探讨   总被引：15，自引：3，他引：12  

吴巧珍 《图书馆论坛》2003,23(2):67-68

网络信息资源是网络环境下图书馆信息资源的重要组成部分。本文探讨了信息资源建设的有关理论和图书馆信息资源建设中存在的问题，以及对网络信息资源管理模式、手段和要求方面进行讨论。  相似文献