转向:全媒体时代青少年复合阅读图景     

李桂华  刘静 《中国图书馆学报》2019,45(2):72-87

进入全媒体时代,媒体融合打通了各类场景,使得时空交叠,阅读载体、阅读渠道、阅读情境均在复合维度充分延展。复合阅读是全媒体时代背景下,个体通过选择、阅览、评价、分享等多种活动,从书面语言和其他书面符号中获得包括知识、审美、道德观念等在内的复合价值的一种社会行为,媒介复合、行为复合、价值复合是其基本特征。本研究围绕阅读前、阅读中、阅读后三阶段阅读行为对3 954位青少年展开问卷调查,发现复合阅读已成为当前青少年的主流阅读行为,从传统阅读到复合阅读的转向已成事实;通过聚类分析将青少年分为四个复合阅读程度不同的种群,并识别了四个种群的阅读模式;通过对青少年种群和阅读态度的相关性分析发现,复合阅读型青少年的阅读态度比传统阅读型青少年的阅读态度更显著积极。最后提出应重视阅读行为转向所带来的阅读情境改变,构建融合式阅读环境;细分阅读群体进行针对性阅读推广设计,以弥合阅读鸿沟;科学介入青少年阅读行为的转变过程,以引导他们积极健康的阅读行为。图5。表6。参考文献32。  相似文献   

科学知识图谱:最有影响的50位科学计量学家   总被引：13，自引：1，他引：13  

侯海燕 《科学学研究》2007,25(3):404-406

借助科学知识图谱的可视化技术手段,对科学计量学国际权威学术期刊《科学计量学》于1978年至2004年间发表的1927篇论文的32345条引文做了作者共引分析,通过绘制科学计量学作者共引地图,界定出世界上最有影响的50位科学计量学家,为了解科学计量学潜在的学科结构提供了独特的视角。  相似文献   

共被引分析方法迭代创新路径研究     

宋歌 《情报学报》2020,39(1):12-24

科研领域的迭代创新是一项原始创新得以扩散和发展的主要创新形式。该研究以共被引分析方法为典型案例,探索科研领域迭代创新的基本特征。通过对共被引分析方法迭代创新的整体趋势、创新阶段、迭代路径和跨学科迭代创新的分析,发现其特征包括对原始创新核心内容的不断调用以及对相关知识的引进与整合;面向问题的反复调整迭代;微创新的累积促生原始创新;在迭代创新形成规模之前存在"沉寂期";学科间的广泛扩散不仅促进迭代创新,而且不同学科在迭代创新中的"角色"不同,存在创新源发学科、创新助力学科和创新采纳学科;另外,持续的迭代创新有赖于外部环境的支撑。  相似文献   

氮肥运筹方式对抛栽杂交水稻穗部性状、抗倒性能及产量的影响   总被引：1，自引：0，他引：1  

杨安中  朱启升  张德文  段素梅  王士梅 《安徽科技学院学报》2011,25(2)

在总施氮(尿素)量600 kg/hm2条件下,研究了氮肥运筹方式对抛栽杂交水稻穗部性状、抗倒性能及产量的影响。结果表明:在氮肥总量相同的情况下,减少基肥、增加分蘖肥用量能增加有效穗数;减少基、蘖肥增加孕穗肥用量使穗长、一次分枝数、二次分枝及穗粒数增加,但抗倒性能下降;减少基、蘖肥增加粒肥往往会导致减产。各处理中,以基肥:分蘖肥:孕穗肥:粒肥为3:2:1:0的处理产量最高,达到11526kg/hm2,较对照增产20.43%,达极显著水平。因此,抛栽杂交水稻氮肥施用基肥:分蘖肥:孕穗肥:粒肥以3:2:1:0为宜。  相似文献   

Hybrid structures: Faculty use and perception of web-based courseware as a supplement to face-to-face instruction     

Robert Woods  Jason D. Baker  Dave Hopper   《The Internet and Higher Education》2004,7(4):281-297

The researchers examined responses from 862 faculty members at 38 institutions nationwide using the blackboard Learning Management System (LMS) to supplement their face-to-face instruction. The four research questions addressed the primary uses that faculty make of blackboard, perceptions that faculty have of how certain blackboard features enhance or elevate (or might enhance or elevate) their assessment of student work and instructional capabilities, and how faculty use of blackboard might positively affect the psychosocial climate within the face-to-face classroom setting. Additional analysis sought to identify the factors that predict use and positive perception of blackboard as a supplement to face-to-face teaching activities. The results indicate that faculty primarily used blackboard as a course management/administration tool to make course documents available to students and manage course grades. Few faculty used blackboard for instructional or assessment purposes, and even fewer utilized blackboard to foster a more positive sense of community within their face-to-face classes. Faculty attitudes, on the whole, were positive when it came to the classroom management functions of blackboard, but neutral or otherwise undecided in terms of its instructional or psychosocial benefits. The main factor in determining blackboard usage—whether for course administration or instructional purposes—was experience with the tool. In addition, women had more positive attitudes than men did in terms of blackboard's potential to enhance classroom management and foster a positive relational climate. Limitations of the study and suggestions for future research are discussed before concluding.  相似文献   

New hybrid model of proton exchange membrane fuel cell     

WANG Rui-min CAO Guang-yi ZHU Xin-jian 《浙江大学学报(A卷英文版)》2007,8(5):741-747

Model and simulation are good tools for design optimization of fuel cell systems. This paper proposes a new hybrid model of proton exchange membrane fuel cell (PEMFC). The hybrid model includes physical component and black-box com-ponent. The physical component represents the well-known part of PEMFC, while artificial neural network (ANN) component estimates the poorly known part of PEMFC. The ANN model can compensate the performance of the physical model. This hybrid model is implemented on Matlab/Simulink software. The hybrid model shows better accuracy than that of the physical model and ANN model. Simulation results suggest that the hybrid model can be used as a suitable and accurate model for PEMFC.  相似文献   

Developing young children’s empathic perception through digitally mediated interpersonal experience: Principles for a hybrid design of empathy games     

Ling Wu  Minkang Kim  Lina Markauskaite 《British journal of educational technology : journal of the Council for Educational Technology》2020,51(4):1168-1187

  相似文献   

Visualizing knowledge in new educational environments: a course on learning objects     

Susan E. Metros 《Open Learning》2013,28(1):93-102

This article describes the learning objectives, the course activities, experiences and outcomes of a graduate level course on learning object design. The course was developed and taught at The Ohio State University by the author during the Spring Quarter of 2003. Students from the visual design and education disciplines partnered to work on a client‐initiated, authentic, grant‐funded project. The students, working in teams and serving as expert consultants to each other, were tasked with designing prototypes for learning objects to be used by freshman high school students, particularly those with disabilities. The course provided an opportunity to observe how developers actually built learning objects and to apply that knowledge to better understanding the issues facing faculty when challenged with the same tasks.  相似文献   

RFID在图书馆应用的知识图谱分析     

刘伟  李昌健  夏绍模  孙王江 《情报探索》2013,(11):45-48,51

运用共现分析法与引文分析法,利用CitespaceⅡ可视化分析软件,绘制我国图书馆RFID应用研究的热点主题、高产作者和高被引作者、高产机构和高被引机构、高产期刊和高被引期刊的知识图谱,以及引文知识图谱,并对这些图谱进行综合对比分析。以揭示我国图书馆应用RFID的现状、研究前沿、发展趋势,以及存在的问题。  相似文献   

知识图谱中矩阵生成研究*     

刘恩涛  李国俊  王瑜  邱小花  肖明  季淑娟 《情报杂志》2013,(10)

将知识图谱方法分为5类：同被引分析、耦合分析、共词分析、合作分析和直接引用分析。用图形展示文献实体之间的这五种关系,并详细分析这些关系的定义。构建关系矩阵是知识图谱分析的关键步骤之一,详细叙述了这5类关系矩阵的生成步骤,供使用知识图谱方法的相关学者参考。  相似文献