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271.
Louise Nemanich Michael Banks Dusya Vera 《Decision Sciences Journal of Innovative Education》2009,7(1):123-148
This article integrates management education and organizational learning theories to identify the factors that drive the differences in student outcomes between the online and classroom settings. We draw upon theory on knowledge transfer barriers in organizations to understand the interlinking relationships among presage conditions, deep learning process, and product in the 3P model of student learning. We test our model in the context of undergraduate education and find that confidence in the instructor's expertise, perceived content relevance, and the social richness of the classroom learning environment enhance student enjoyment of the course. Confidence in instructor's expertise and perceived content relevance also contribute to greater understanding of causal relationships among course concepts. Enjoyment is positively associated with learning performance in the classroom, but not online, and student ability is positively associated with learning performance in the online context, but not in the classroom. Our results have implications for course designs in the traditional classroom context and the more innovative online environment. 相似文献
272.
在新一轮课改的推动下,小学音乐课堂教学的方式方法也发生了相应的变化。在"深度学习"理念支持下,有效地发挥团队合作在课堂中的作用,可以更好地提升课堂效率,提高学生的音乐素养。而探究在小学音乐课堂中组织团队合作学习的策略,成为当下教师思考的问题之一。 相似文献
273.
三面向公司诉重庆市涪陵区图书馆一案凸显了"一般链接"和"深度链接"的问题."深度链接"是否侵权,早在<信息网络传播权保护务例>出台之前便已进入了人们的视野.以"深度链接"为依据进行侵权认定,无论从司法解释还是司法实践上看都缺乏依据.本案启示图书馆,在提供链接服务时需要对被链接内容进行一定程度的筛选、调查;认真对待侵权通知,及时断开涉嫌侵权链接. 相似文献
274.
视网膜疾病如视网膜动脉阻塞等的早期诊断和治疗是预防永久性视力损伤的关键。为辅助临床眼科医生更快、更准确地诊断视网膜疾病,提出一种基于深度学习的视网膜分支动脉阻塞分割的方法。首先,将三维视网膜光学相干断层扫描图像转换为二维B超扫描图像,通过二值化、仿射变换等方法提取视网膜区域作为感兴趣区域|然后将感兴趣区域送入条件生成对抗网络进行训练,实现BRAO病变区域分割|最后,采用腐蚀、闭运算等形态学运算排除假阳性。在20张来自20双眼睛、包含BRAO急性期和萎缩期视网膜OCT图像上进行四折交叉验证,平均正确率、真阳性率、假阳性率分别为94.7%、92.1%、5.0%,表明BRAO分割方法有效。 相似文献
275.
研究股骨近端空心钉锁定板内固定微创治疗青壮年股骨近端骨折的临床疗效及优点。采用透视下闭合复位应用股骨近端空心钉锁定板内固定治疗41例青壮年股骨颈基底部GardenⅠ～Ⅲ型骨折或股骨转子间EvansⅠ～Ⅱ型骨折。观察术后骨折愈合情况、髋关节功能恢复情况及股骨头坏死情况。结果显示,41例患者骨折愈合率为100%,无髋内翻及内固定失败;髋关节功能优良率90%(Harris评分标准);股骨头坏死率7.3%。结果表明,该方法具有创伤小、操作简单、固定可靠和并发症少等优点。 相似文献
276.
近年来,在建设工程中出现越来越多的深基坑工程,深基坑的支护问题也成为关注的焦点。该文对深基坑支护施工中存在的问题进行了分析讨论,并针对问题原因提出了注意事项和一定的施工管理措施,以预防施工事故的发生。 相似文献
277.
刘基有近三十年的时间在故乡度过,刘基故乡南田与温州渊源深厚。在他一生中,他经常往来温州与家乡南田。现在温州诸县、市刘姓,奉刘基为太公,大率为刘基后代。有关刘伯温的传说、故事、诗歌、风情、民俗、童谣、民谣等,在温州大量流传。刘基是温州历史上最有影响的先哲乡贤。 相似文献
278.
Jianwei Zhang Marlene Scardamalia Mary Lamon Richard Messina Richard Reeve 《Educational technology research and development : ETR & D》2007,55(2):117-145
This study examines four months of online discourse of 22 Grade 4 students engaged in efforts to advance their understanding of optics. Their work is part of a school-wide knowledge building initiative, the essence of which is giving students collective responsibility for idea improvement. This goal is supported by software—Knowledge Forum—designed to provide a public and collaborative space for continual improvement of ideas. A new analytic tool—inquiry threads—was developed to analyze the discourse used by these students as they worked in this environment. Data analyses focus on four knowledge building principles: idea improvement; real ideas, authentic problems (involving concrete/empirical and abstract/conceptual artifacts); community knowledge (knowledge constructed for the benefit of the community as a whole); and constructive use of authoritative sources. Results indicate that these young students generated theories and explanation-seeking questions, designed experiments to produce real-world empirical data to support their theories, located and introduced expert resources, revised ideas, and responded to problems and ideas that emerged as community knowledge evolved. Advances were reflected in progress in refining ideas and evidence of growth of knowledge for the community as a whole. Design strategies and challenges for collective idea improvement are discussed.
相似文献
| Jianwei ZhangEmail: |
279.
Coronary artery disease (CAD) remains the major cause of mortality and morbidity in the entire world population. The conventional risk factors of CAD include hypertension, hyperlipidemia, diabetes mellitus, family history, smoking etc. These factors contribute only 50 % of the total risk of CAD. For providing a complete risk assessment in CAD, it is mandatory to have well-planned clinical, biochemical and genetic studies in patients with CAD and subjects who are at risk of developing CAD. In this review an attempt is made to critically evaluate the conventional and emerging risk factors which predispose the individual to CAD. Specifically, the molecular basis of CAD including high oxidative stress, low antioxidant status and increased DNA damage are covered. A comprehensive and multifactorial approach to the problem is the better way to reduce the morbidity and mortality of the disease. 相似文献
280.
《Information processing & management》2023,60(2):103229
Multimodal sentiment analysis aims to judge the sentiment of multimodal data uploaded by the Internet users on various social media platforms. On one hand, existing studies focus on the fusion mechanism of multimodal data such as text, audio and visual, but ignore the similarity of text and audio, text and visual, and the heterogeneity of audio and visual, resulting in deviation of sentiment analysis. On the other hand, multimodal data brings noise irrelevant to sentiment analysis, which affects the effectness of fusion. In this paper, we propose a Polar-Vector and Strength-Vector mixer model called PS-Mixer, which is based on MLP-Mixer, to achieve better communication between different modal data for multimodal sentiment analysis. Specifically, we design a Polar-Vector (PV) and a Strength-Vector (SV) for judging the polar and strength of sentiment separately. PV is obtained from the communication of text and visual features to decide the sentiment that is positive, negative, or neutral sentiment. SV is gained from the communication between the text and audio features to analyze the sentiment strength in the range of 0 to 3. Furthermore, we devise an MLP-Communication module (MLP-C) composed of several fully connected layers and activation functions to make the different modal features fully interact in both the horizontal and the vertical directions, which is a novel attempt to use MLP for multimodal information communication. Finally, we mix PV and SV to obtain a fusion vector to judge the sentiment state. The proposed PS-Mixer is tested on two publicly available datasets, CMU-MOSEI and CMU-MOSI, which achieves the state-of-the-art (SOTA) performance on CMU-MOSEI compared with baseline methods. The codes are available at: https://github.com/metaphysicser/PS-Mixer. 相似文献