计算机机房视频监控系统建设

计算机机房承担着教学和试验等功能。随着信息技术和视频设备的发展,计算机机房的管理也应该从单一的点式管理发展到网络化、信息化的集约管理上来。我们应当建立由视频终端、传输、控制、显示、记录登记5大部分组成的计算机机房视频实时监控系统,以有效提高机房管理的质量和效率。     

面向艺术教育的移动视频资源平台设计与实现

虽然近年来我国普通高校艺术教育取得了可喜成绩,但仍存在教育教学资源不足、课时少、师资及课堂容量有限等诸多问题,该文将视频电话技术应用于普通高校艺术教育领域,通过艺术教育教学视频资源库构建、面向视频电话的视频压缩、SIP协议与3G-324M协议的互通等一系列相关研究,实现信息技术和艺术教育的整合,使得学生可在校园网内通过移动终端获取艺术教育教学视频资源,随时随地学习和复习艺术教育知识,从而满足个性化、多样化的艺术教育需求。     

信息生态视角下移动短视频UGC网络舆情传播行为影响因素研究

[目的/意义]移动短视频UGC网络舆情传播行为影响因素的分析,可以更好地了解移动短视频用户的行为特征及影响因素,从而帮助网络舆情监管部门加强移动短视频网络舆情管理。[方法/过程]文章以计划行为理论为基础,基于信息、信息人、信息技术、信息环境和谐发展的信息生态视角,构建移动短视频UGC网络舆情传播行为影响因素模型;采用问卷调查和结构方程研究方法,使用SPSS 22.0和AMOS 21.0软件对数据进行统计分析和模型验证。[结果/结论]研究结果说明,信息、信息环境、信息技术3个因素通过传播意愿对移动短视频UGC网络舆情传播行为产生正向影响;信息因素对移动短视频UGC网络舆情传播意愿影响最大,其次是信息环境和信息技术。     

面向事件的视频语义表示方法

[目的/意义]视频内容正在影响着我国大量人口的信息生活,视频语义的良好表示是推动当前视频内容研究和视频应用服务向前发展的关键基础。现有的视频语义表示方法存在事件语义表示角度和粒度划分方式单一、缺少灵活的对象语义变化机制的问题,因此探究更有效的视频语义表示方法具有重要意义。[方法/过程]提出面向事件的视频语义表示方法。此方法考虑人的双向认知过程,可以根据不同用户背景和需求从不同角度解读和生成事件语义,并定义相应的语义对象和角色的变化机制。[结果/结论]面向事件的视频语义表示方法具有完整的语义表示框架,支持多角度的事件语义表示,可以灵活地进行属性级、对象级和事件级的语义拓展,能够表示更丰富的视频语义。     

教育评价改革如何应对AI快速发展的挑战？

继ChatGPT之后,文生视频Sora横空出世。为了应对人工智能快速发展带来的挑战,我国学校教育正在加快推进 AI+教育,但是 AI+教育受唯分数、唯升学、唯学历的教育评价体系的影响,存在知识化、应试化倾向,人工智能在教育领域的应用还主要服务于应试,这既不符合教育改革方向,也难以培养适应人工智能时代的创新人才。应对人工智能快速发展的挑战,关键在推进教育评价改革,要坚定破除唯分数、唯升学的教育评价顽瘴痼疾,要在推进教育评价改革过程中,利用人工智能技术提高评价的效率与公信力。     

Influence of using challenging tasks in biology classrooms on students’ cognitive knowledge structure: an empirical video study

Empirical analysis of secondary biology classrooms revealed that, on average, 68% of teaching time in Germany revolved around processing tasks. Quality of instruction can thus be assessed by analyzing the quality of tasks used in classroom discourse. This quasi-experimental study analyzed how teachers used tasks in 38 videotaped biology lessons pertaining to the topic ‘blood and circulatory system’. Two fundamental characteristics used to analyze tasks include: (1) required cognitive level of processing (e.g. low level information processing: repetiition, summary, define, classify and high level information processing: interpret-analyze data, formulate hypothesis, etc.) and (2) complexity of task content (e.g. if tasks require use of factual, linking or concept level content). Additionally, students’ cognitive knowledge structure about the topic ‘blood and circulatory system’ was measured using student-drawn concept maps (N?=?970 students). Finally, linear multilevel models were created with high-level cognitive processing tasks and higher content complexity tasks as class-level predictors and students’ prior knowledge, students’ interest in biology, and students’ interest in biology activities as control covariates. Results showed a positive influence of high-level cognitive processing tasks (β?=?0.07; p?.01) on students’ cognitive knowledge structure. However, there was no observed effect of higher content complexity tasks on students’ cognitive knowledge structure. Presented findings encourage the use of high-level cognitive processing tasks in biology instruction.     

Investigating university students’ adoption of video lessons

ABSTRACT

The purpose of this study was to examine the undergraduate students’ adoption of video lessons. The data were collected from 313 undergraduate students from Education, Health Sciences, and Letters Faculties within a large university in Turkey using a questionnaire with six constructs: ease of use, usefulness, enjoyment, intention, computer self-efficacy and relative advantage. The Technology Acceptance Model and Diffusion of Innovation Theory were used as the research framework for the study, and the data were analysed by Structural Equation Modeling. The results showed that ease of use and computer self-efficacy had a significant influence on usefulness of video lessons. Computer self-efficacy had a significant influence on ease of use regarding video lessons and usefulness of a video lesson had a significant influence on relative advantage. In addition, relative advantage and enjoyment had a significant effect on student intention to use a video lesson. Interestingly, it was found that perceived ease of use, perceived usefulness, and computer self-efficacy had no effect on the intention to use video lessons. Consequently, five constructs account for 38% of the variance intention to use video lessons. The research model was found to have a good fit.     

Near-duplicate video detection featuring coupled temporal and perceptual visual structures and logical inference based matching

We propose in this paper an architecture for near-duplicate video detection based on: (i) index and query signature based structures integrating temporal and perceptual visual features and (ii) a matching framework computing the logical inference between index and query documents. As far as indexing is concerned, instead of concatenating low-level visual features in high-dimensional spaces which results in curse of dimensionality and redundancy issues, we adopt a perceptual symbolic representation based on color and texture concepts. For matching, we propose to instantiate a retrieval model based on logical inference through the coupling of an N-gram sliding window process and theoretically-sound lattice-based structures. The techniques we cover are robust and insensitive to general video editing and/or degradation, making it ideal for re-broadcasted video search. Experiments are carried out on large quantities of video data collected from the TRECVID 02, 03 and 04 collections and real-world video broadcasts recorded from two German TV stations. An empirical comparison over two state-of-the-art dynamic programming techniques is encouraging and demonstrates the advantage and feasibility of our method.     

Acquiring Clinical Knowledge from an Online Video Platform: A Randomized Controlled Experiment on the Relevance of Integrating Anatomical Information and Clinical Practice

Basic subjects in medical education, such as anatomy, are often taught through teaching formats that do not always sufficiently demonstrate the relevance of this basic information for clinical practice. Accordingly, it is a recent trend in anatomy education to link anatomical information more explicitly to clinical practice. This article presents an online video platform (Tuebingen’s Sectio Chirurgica [TSC]) as one means of explicitly integrating preclinical anatomical knowledge and clinical application. The purpose of the study presented here was to examine the effects of videos through which medical students were educated about Anterior Cruciate Ligament reconstruction. A TSC video about this surgical procedure was compared to a video with a traditional lecture providing the identical information. Participants (n = 114) perceived the TSC video to be superior in comprehensibility of the presentation (P = 0.003) and conceivability of the surgical procedure (P = 0.027), and to be more entertaining (P < 0.001). Moreover, participants in the TSC condition acquired more clinical knowledge than in the lecture condition (P = 0.043) but did not differ in their acquisition of anatomical knowledge. Mediation analyses indicated that the effect on the acquisition of clinical knowledge was mediated by comprehensibility, conceivability, and entertainment. These findings are discussed regarding their implications for medical education in terms of contributing to the general trend of linking preclinical anatomical knowledge to clinical application. A discussion about the limitations of the study and suggestions for future research are also provided.     

A Review of: “Introduction to Reference Sources in the Health Sciences. 5th Ed. Huber,Jeffrey T.; Boorkman,Jo Anne; and Blackwell,Jean, eds.”

Smart boards, also known as interactive whiteboards (IWBs), are large, interactive, touch-sensitive displays that are mainly used for presentation or educational purposes. While some may not consider this an emerging technology today, changes in the design and capabilities challenge that line of thinking. This column will explain what a smart board is, provide a brief history about it, and describe where it is currently used and why it might be a technology to consider having in a library today.