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This study investigated students' interpretation of diagrams representing the human circulatory system. We conducted an interview study with three students aged 14–15 (Year 10) who were studying biology in a Hong Kong school. During the interviews, students were asked to interpret diagrams and relationships between diagrams that represented aspects of the circulatory system. All diagrams used in the interviews had been used by their teacher when teaching the topic. Students' interpretations were expressed by their verbal response and their drawing. Dual coding theory was used to interpret students' responses. There was evidence that one student relied on verbal recall as a strategy in interpreting diagrams. It was found that students might have relied unduly on similarities in spatial features, rather than on deeper meanings represented by conventions, of diagrams when they associated diagrams that represented different aspects of the circulatory system. A pattern of students' understanding of structure–behaviour–function relationship of the biological system was observed. This study suggests the importance of a consistent diagrammatic and verbal representation in communicating scientific ideas. Implications for teaching practice that facilitates learning with diagrams and address students' undue focus on spatial features of diagrams are discussed. 相似文献
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Victor R. Lee 《International Journal of Science Education》2013,35(8):1099-1126
Visual representations are ubiquitous in modern‐day science textbooks and have in recent years become an object of criticism and scrutiny. This article examines the extent to which changes in representations in textbooks published in the USA over the past six decades have invited those critiques. Drawing from a correlational analysis of a corpus of 34 US middle school physical science textbooks, continuities are established with respect to the purposes that most textbook images serve and the numbers of schematic representations that are used. Changes are observed in the overall total number of representations in textbooks and in the proportion of representations that are photographic. Interpretive cases of individual representations over time are presented to further illustrate the continuities and changes that have taken place. Specifically, high‐fidelity images, such as photographs, are shown permeating or replacing schematic and explanatory images in the interest of promoting familiarization to students. This shifting emphasis toward familiarization is discussed as a specific cause for concern about quality and utility of representations in modern‐day US science textbooks. 相似文献
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针对传统的地形海量数据(基于规则格网数字高程模型)渲染对软硬件需求高、开发周期长、开发难度大等问题,提出了基于Open Scene Graph的解决方案,使海量数据渲染在对硬件需求以及开发难度上都得到了明显的改善。 相似文献
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标准的有效扩散是促进贸易、推动创新、提升质量、社会治理的关键.为此,从中国知网数据库筛选出2001-2020年期间的129篇相关文献,以CiteSpace软件提供的知识图谱进行关键词共享、关键词聚类、高频词时区划分等文献计量研究,对国内标准扩散研究的演化路径、理论体系及发展方向进行探索性分析.研究发现:国内标准扩散研究在较分散的起步阶段之后经历活跃阶段,近期进入拓展阶段,相关研究不够丰富、内容分散,更缺乏高水平研究成果,其中起步期对具体技术标准尤其是移动通信技术标准的扩散问题关注较深,活跃阶段的研究对象开始呈现多元化,Bass模型等方法得到应用、产业化方式得到关注,而拓展阶段对标准扩散的行业、组织形式以及研究方法有了更深的细化与更新的理解;从研究脉络看,重点研究具体标准的扩散、扩散模式和评价,移动通信领域一直贯穿标准扩散研究始终,农业、医疗领域也受到重视,市场、主体、政府以及标准自身属性是标准扩散影响研究重点.最后,提出拓展研究的行业、标准类型以及增加定量研究等将成为未来研究的方向. 相似文献
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论文通过对历年农家书屋研究成果的可视化分析,发现农家书屋研究在可持续发展、农家书屋与图书馆的关系、数字农家书屋等方面是历年的研究热点;同时总结出现阶段国内在农家书屋的理论研究上存在的一些不足并对未来农家书屋的建设和研究方向提出了意见。 相似文献
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2013年是普赖斯逝世30周年,也是其代表作《小科学,大科学》出版50周年。在过去的半个世纪里,普赖斯和《小科学,大科学》一书,深刻地影响了科学学的研究范式和脉络,尤其是催生了科学计量学这一领域的诞生和发展。本文利用科学计量学和知识可视化的方法,利用科学计量指标和科学知识图谱,分析了普赖斯的学术贡献和学术影响。结论表明,从影响的广度来看,普赖斯的著作影响着科学计量学、科学社会学、科学学,乃至经济学、心理学等诸多领域;从影响的深度来看,普赖斯在科学计量学领域各分支领域的发展中都起到了基础性的作用。 相似文献
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对CAD和GIS数据模型进行分析后,论述了如何高效构造可视化的转换模型。可视化转换模型可以在转换结果的准确性和工作效率间找到平衡点,是一种方便、快捷、高效的解决方案。 相似文献
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为了深化对我国社区教育研究的整体认识,以2001—2020年人大复印资料《成人教育学刊》转载的139篇社区教育论文为样本数据,运用文献计量法和可视化软件对社区教育研究的基本状况进行分析,梳理了社区教育研究的论文的数量,源期刊的转载量、影响因子和所在地,核心作者数量、第一作者所在机构和作者合作关系,基金项目,研究方法等情况。基于此,运用SATI软件绘制了社区教育研究的关键词共现图谱,发现《成人教育学刊》社区教育研究主题主要集中于社区教育政策研究、农村社区教育发展研究、社区教育与治理、社区学习共同体研究、美国社区学院的发展及启示、终身教育(终身学习)和学习型社会(学习型社区)与社区教育、城市社区教育信息化和社区数字化学习等七个方面。展望未来,社区教育研究应进一步聚焦于新信息技术、乡村振兴战略和人口老龄化等主题,并注重加强科研合作、把握研究热点、拓宽研究视角、丰富研究方法等,以推进社区教育研究不断向纵深发展。 相似文献
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The authors of this paper investigate terms of consumers’ diabetes based on a log from the Yahoo!Answers social question and answers (Q&A) forum, ascertain characteristics and relationships among terms related to diabetes from the consumers’ perspective, and reveal users’ diabetes information seeking patterns. In this study, the log analysis method, data coding method, and visualization multiple-dimensional scaling analysis method were used for analysis. The visual analyses were conducted at two levels: terms analysis within a category and category analysis among the categories in the schema. The findings show that the average number of words per question was 128.63, the average number of sentences per question was 8.23, the average number of words per response was 254.83, and the average number of sentences per response was 16.01. There were 12 categories (Cause & Pathophysiology, Sign & Symptom, Diagnosis & Test, Organ & Body Part, Complication & Related Disease, Medication, Treatment, Education & Info Resource, Affect, Social & Culture, Lifestyle, and Nutrient) in the diabetes related schema which emerged from the data coding analysis. The analyses at the two levels show that terms and categories were clustered and patterns were revealed. Future research directions are also included. 相似文献