How repeated studying and testing affects multimedia learning: Evidence for adaptation to task demands     

《Learning and Instruction》2016

Two biases can occur in multimedia learning: overconfidence and over-reliance on text processing. The present research sought to identify these biases and to investigate whether they can be reduced, and hence learning fostered, when studying and testing are repeated. In 2 experiments (Exp.1: N = 79, Exp.2: N = 52), students learned either with text only or with text and pictures (multimedia) about how the toilet flush works, gave judgments-of-learning (JOLs), were tested on the learning contents; afterwards this study-test cycle was repeated. Results from both experiments revealed stronger overconfidence due to multimedia in both study-test cycles (JOLs higher than learning outcomes). Eye movement data showed a relative increase in attention on the picture versus text from cycle 1 to cycle 2; this relative increase in attention was related to better learning outcomes. Repeated studying and testing thus helped to reduce over-reliance on text processing in multimedia learning, fostering performance.  相似文献   

动态雾计算网络中基于在线学习的任务卸载算法     

谭友钰  陈蕾  周明拓  王昆仑  杨旸  张武雄 《中国科学院大学学报》2020,37(5):688-698

任务卸载是雾计算的主要技术之一，即计算能力不足的节点将任务卸载给具有富余资源的节点帮助计算。以优化任务平均卸载时延和提升卸载服务成功率为目标，利用多臂老虎机理论为动态雾计算网络提出一种基于在线学习的任务卸载算法，可实时做出最优卸载决策。将该算法扩展到非稳定网络状态，使之可以动态追踪网络中节点的资源与环境变化，实时调整卸载决策。详细分析所提出算法的性能、复杂度和存储占用情况。仿真结果表明，这两种算法可达到的长期平均任务卸载时延均十分接近理想算法下的最优时延，卸载服务成功率也得到显著提升。此外，所提算法在非稳定的网络状态下能够追踪到计算资源与环境的变化。  相似文献   

不同母语背景留学生汉语阅读中字音、字形作用的特点   总被引：1，自引：0，他引：1  

张金桥 《华南师范大学学报(社会科学版)》2007,(2):119-123

采用校正任务探讨了母语为拼音文字和表意文字的外国留学生在汉语阅读中字音、字形作用的特点。结果表明，初级汉语水平的拼音文字背景留学生字音发挥主要作用，中级汉语水平的拼音文字背景留学生字音、字形起相同重要作用；无论是初级汉语水平还是中级汉语水平的表意文字背景留学生，都是字形发挥主要作用。本研究结果初步表明，初级汉语水平留学生主要受其母语认知加工特点的影响，中级汉语水平留学生受到母语和目的语认知加工特点两个方面的影响。  相似文献   

高校图书情报工作如何创新   总被引：1，自引：0，他引：1  

关红 《唐山师范学院学报》2002,24(6):83-84

在新形势下，高校图书馆图书情报工作应注重于观念创新、机制创新、管理创新、人才创新、技术创新服务创新、文献资源开发创新。  相似文献   

Timescales for exploratory tactical behaviour in football small-sided games     

Angel Ric  Robert Hristovski  Bruno Gonçalves  Lorena Torres  Jaime Sampaio  Carlota Torrents 《Journal of sports sciences》2016,34(18):1723-1730

The aim of this study was to identify the dynamics of tactical behaviour emerging on different timescales in football small-sided games and to quantify short- and long-term exploratory behaviour according to the number of opponents. Two teams of four professional male footballers played small-sided games against two different teams with a variable number of opponents (3, 5 and 7). Data were collected using a combination of systematic observation and a non-differential global positioning system (15 Hz). The temporal diversity and structural flexibility of the players were determined by calculating the dynamic overlap order parameter q, entropy and trapping strength. Analysis of the exploratory dynamics revealed two different timescales, forming a different metastable landscape of action for each constraint. Fast dynamics lasted on average a few seconds and consisted of changes in tactical patterns. The long timescale corresponded to the shared tasks of offence and defence lasting tens of seconds. The players’ tactical diversity decreased with an increasing number of opponents, especially in defence. Manipulating numerical imbalance is likely to promote changes in the diversity, unpredictability and flexibility of tactical solutions. The fact that the temporally nested structure of constraints shaped the emergence of tactical behaviour provides a new rationale for practice task design. The manipulation of numerical imbalance on the timescale of a few tens of seconds, on which the exploratory behaviour of players saturates, may help coaches to optimise the exploratory efficiency of the small-sided games.  相似文献   

从一个Jigsaw活动看任务型教学     

白杨 《许昌学院学报》2003,22(3):129-131

本文在介绍Jigsaw的有关信息的基础上，结合作者自己编写的Jigsaw来看它在任务型教学中的应用及与任务型教学的关系。  相似文献   

基于信息化教育的教育技术学专业实验室建设之探析     

雷体南  李经天 《中国教育技术装备》2004,(5):12-14

从信息化教育的角度出发，对教育技术学专业实验室的功能、信息化实验教学课题设计要求、实验室信息化管理等问题进行了探讨。  相似文献   

电力系统及其自动化专业毕业设计改革的探讨     

张晓辉 《教学研究(河北)》2003,26(2):176-177,179

本文对电力系统及其自动化专业本科学生毕业设计工作进行了分析，在设计课题范畴，学生创新能力以及工程实用性等方面作了具体阐述。  相似文献   

构建高职教育专业培养目标体系     

胡永信 《张家口职业技术学院学报》2006,19(2):1-4

高职教育应根据对职业岗位工作分析和任务分析确定其专业培养目标。把完成任务的最终绩效目标作为业务目标，按学期分段构建具有高职特色的专业培养目标体系。这样有利于发挥专业培养目标对课程设置、教学内容组织、教学方法选择的指导作用，同时使教学质量监控与评价有了科学的客观的依据。  相似文献   

大学公共英语课堂活动设计探索     

曹雪峰 《南宁职业技术学院学报》2011,(5):53-55

在大学公共英语教学中,教师应引导学生树立正确的学习目标,灵活运用多种教学方法和教学手段设计和组织适合学生实际情况的教学活动,激发学生参与课堂活动的积极性,体现学生在课堂上的主体地位。  相似文献