基于批判性思维和创造力的我国大学生信息素养教育模式研究

信息素养、批判性思维、创造力是21世纪大学生必需掌握的核心技能,研究并揭示三者的内在影响机制,对于促进高等教育信息素养教育观念的转变,制订信息素养标准,进而优化信息素养教育模式,具有重要意义。本文采用问卷调查方法获取我国大学生信息素养、批判性思维能力和创造力状况的基本数据。通过回归分析和中介效应分析发现:信息素养、批判性思维对创造力影响显著,批判性思维在信息素养对创造力的影响中存在显著中介效应。通过路径分析发现:信息评估能力和信息利用能力通过批判性思维的中介作用更能促进创造力,信息素养通过分析能力和系统化能力更能够激发创造力,信息搜索能力通过系统化能力能够最大程度激发创造力;信息搜索能力、信息评估能力、信息利用能力是信息素养的核心能力,分析能力、系统化能力是批判性思维的核心能力。研究结果表明:在信息素养教育中融合批判性思维的培养能较大程度地提高大学生的创造力。根据调研结果及相关理论研究,本文提出融合批判性思维的信息素养教育与专业课程教育的整合模式,即ILi CTi C模式,并提出实现该模式的系统方案,以期为推进我国大学生信息素养教育提供参考。     

试论皮亚杰的运算逻辑

皮亚杰认为抽象模式是心理学因果解释的一种形式,文章认为皮亚杰所开创的运算逻辑是儿童实际思维发展机制的形式化模型,也是解释儿童认知结构转换规律的抽象模式。     

不同语料下基于LDA主题模型的科学文献主题抽取效果分析

[目的/意义]潜在狄利克雷分布(Latent Dirichlet Allocation,LDA)在科技情报分析中用来发现学科主题、挖掘研究热点以及预测研究趋势等。对常见的科学文献文本语料库(关键词、摘要、关键词+摘要)进行LDA主题抽取效果的评价,以揭示不同语料库的主题抽取效果,提高LDA在科技情报分析中的应用效果。[方法/过程]对上述3种语料库下的LDA主题模型进行对比研究,采用基于查全率、查准率、F值以及信息熵的定量分析和基于主题抽取的广度和主题粒度的定性分析相结合的方法对主题抽取效果进行评价。[结果/结论]通过国内风能领域的科学文献数据实证研究发现,无论是从定量分析还是从定性分析来看,摘要和关键词+摘要作为语料的LDA主题抽取的效果均优于关键词作为语料的LDA主题抽取效果,并且前者在主题抽取的广度方面表现更好,而后者抽取的主题粒度更细。     

建筑结构质量缺陷与质量事故界定

主要从理论上界定质量缺陷和质量事故，并探讨减少质量缺陷、避免质量事故之对策。     

论历史时期汉水流域的文化政治地位

李家村与龙岗等仰韶文化遗存的分布表明 ,汉水流域是华夏文明的重要发祥地之一。对建都秦岭以北关中平原的周秦汉唐等王朝来说 ,汉水流域一直是第一政治后方 ,起着重要的政治缓冲和后院屏障作用 ;汉水流域历史上曾几度辉煌又几度衰落 ,代表着内陆腹地区域发展的一个典型 ;而作为沟通与中原、中南与西部的交通大动脉 ,又与中国的西部的开发具有重要意义。     

科研型数学教师及其培养

国际经济、科技、人才的竞争正推动着教育的改革。教育改革的关键因素在于合格的、新型教师的培养。科研型教师是指既能教学，又能进行数学及数学教育研究的教师。科研型教师应具备3项条件：转变观念，更新意识，提高能力。科研型数学教师是新时代数学教育的需要，要实行理论学习、实践探索和科学研究三位一体的教师培训途径。教养科研型教师需要解决“为何搞科研”、“如何搞科研”和“研究什么”3个问题。     

对实施人才强市战略的思考

本文从人才学角度分析了惠州市人才队伍的现状, 指出了实施人才战略是适应惠州经济社会发展的需要, 并提出了在实施人才战略的一些具体构想。     

Effects of psychosocial variables in the similarity and interdependence of physical activity levels among adolescent best friend dyads

Given that physical activity (PA) tends to decrease with age during adolescence, addressing factors that affect change is important. This study examined the similarity and interdependence of PA as influenced by psychosocial factors among adolescent best friend dyads. A total of 660 adolescents, representing 330 best friend dyads, completed questionnaires with regard to PA, sitting time, perceived exercise benefits and barriers, physical self-perception and social support for PA. Dyads were also identified as reciprocal and non-reciprocal best friends; reciprocal means that both considered each other best friends and non-reciprocal were those in which only one considered the other a best friend. Data were analysed using a hierarchical linear model framework. Results indicated significant similarities between reciprocal best friend dyads for PA and sitting time, and for sitting time in non-reciprocal best friends (P values <.01). Psychosocial variables were associated with PA in reciprocal best friend dyads and with sitting time in reciprocal and non-reciprocal best friend dyads. Best friend gender, regular sports practice of the person, perceived exercise barriers of the best friend and best friend social support were the best predictors for PA.     

A comparison of methods to determine bilateral asymmetries in vertical leg stiffness

Whilst the measurement and quantification of vertical leg stiffness (K_vert) asymmetry is of important practical relevance to athletic performance, literature investigating bilateral asymmetry in K_vert is limited. Moreover, how the type of task used to assess K_vert may affect the expression of asymmetry has not been properly determined. Twelve healthy males performed three types of performance tasks on a dual force plate system to determine K_vert asymmetries; the tasks were (a) bilateral hopping, (b) bilateral drop jumping and (c) unilateral drop jumping. Across all the three methods, K_vert was significantly different between compliant and stiff limbs (P < 0.001) with a significant interaction effect between limb and method (P = 0.005). Differences in K_vert between compliant and stiff limbs were ?5.3% (P < 0.001), ?21.8% (P = 0.007) and ?15.1% (P < 0.001) for the bilateral hopping, bilateral drop jumping and unilateral drop jumping methods, respectively. All the three methods were able to detect significant differences between compliant and stiff limbs, and could be used as a diagnostic tool to assess K_vert asymmetry. Drop jumping tasks detected larger K_vert asymmetries than hopping, suggesting that asymmetries may be expressed to a greater extent in acyclic, maximal performance tasks.     

社会转型加速期加强城市社区建设的意义

目前我国正处于社会转型加速期，在这一时期社会生活的各个方面，包括人们的劳动方式，生活方式，价值观念等都发生了深刻变化，带来了一系列问题，这在我国的城市社会尤为明显，加强城市社区建设将有助于解决社会转型过程中出现的某些问题，本文对此作以探讨。