共查询到19条相似文献,搜索用时 78 毫秒
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电子白板是虚拟教室中的一个重要工具。该文介绍了基于JAVA语言设计的一个电子白板系统,并对电子白板的设计与实现过程当中的各种关键技术进行了讨论。 相似文献
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对比电阻式电子白板、电容式电子白板、红外式电子白板、超声波式电子白板、CCD光扫描式电子白板和电磁感应式电子白板的优缺点,详细论述了光电式电子白板的光电笔的设计、图像处理系统的设计,以及它们的软件系统,指出了改进和发展的方向. 相似文献
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虚拟教室中电子白板的关键技术与实现 总被引:4,自引:0,他引:4
随着计算机网络的发展,网上教学已成为计算机辅助教育的研究热点,而对于一个完善的网上虚拟教室系统,应提供电子白板工具。论文基于协同理论论述了设计与实现电子白板的关键技术,介绍了电子白板的体系结构和感知服务,并提出教学环境下的并发控制策略以及白板系统支持元素的描述。 相似文献
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介绍了一个具有电子白板功能的语音通信系统的设计与实现。首先概述了系统的整体结构,接着介绍了对语音的处理。然后重点讨论了系统中多线程的并行运行、最后简单介绍了电子白板中对中文的处理。 相似文献
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基于Java的网络教学电子白板的设计与实现 总被引:3,自引:0,他引:3
根据建构主义理论,讨论了应用于网络教学的辅助工具电子白板的分析及设计过程。首先对电子白板应用技术及设计作了简要的介绍,然后利用Java语言设计并实现了该电子白板系统,同时对实现过程中的一些关键技术,如体系结构、Socket编程、通信协议集的制定、绘图过程中的橡皮筋技术以及图形的保持等展开讨论,并提出了具体可行的解决方法。最后将上述介绍的方法应用到网络教学电子白板系统的设计中,取得了良好的效果。 相似文献
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基于面向服务的体系结构与服务定制思想,讨论了电子自板构件的设计与实现,介绍了电子白板构件的主要接口和调用机制,并结合“863”课题的研究。将电子白板构件与其它构件进行服务组合,集成了一个简单的计算机会议应用系统。 相似文献
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电子白板技术作为网络教学的基础技术得到了最广泛的应用。文中对利用网络套接字,进行电子白板系统的设计和实现,以及使用MSTTS(文本朗读)语音处理技术,作了较详细的论述、并给出了Windows下实现的关键Visual C++代码和一个简单实例. 相似文献
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根据建构主义理论,讨论了应用于网络教学的辅助工具电子白板的分析及设计过程。首先对电子白板应用技术及设计作了简要的介绍,然后利用Java语言设计并实现了该电子白板系统,同时对实现过程中的一些关键技术,如体系结构、Socket编程、通信协议集的制定、绘图过程中的橡皮筋技术以及图形的保持等展开讨论,并提出了具体可行的解决方法。最后将上述介绍的方法应用到网络教学电子白板系统的设计中,取得了良好的效果。 相似文献
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An immersive whiteboard system is presented where users at multiple locations can communicate with each other. The system features a virtual environment with vivid avatars, stroke compression and streaming technology to effectively deliver stroke data across meeting participants, friendly human interaction and navigation, virtual and physical whiteboard. The whiteboard is both a physical platform for our input/output interfaces and a virtual screen for sharing common multimedia. It is this whiteboard correspondence that allows the user to physically write on the virtual whiteboard. In addition to drawing on the shared virtual board, the immersive whiteboard in our setup permits users to control the application menus, insert multimedia objects into the world, and navigate around the virtual environment. By integrating multimedia objects and avatar representations into an immersive environment, we provide the users with a more transparent medium so that they feel as if they are communicating and interacting face-to-face. The whiteboard efficiently pulls all the collaboration technologies together. The goal of this collaborative system is to provide a convenient environment for participants to interact with each other and support collaborative applications such as instant messaging, distance learning and conferencing. 相似文献
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A multi-user 3-D virtual environment allows remote participants to have a transparent communication as if they are communicating face-to-face. The sense of presence in such an environment can be established by representing each participant with a vivid human-like character called an avatar. We review several immersive technologies, including directional sound, eye gaze, hand gestures, lip synchronization and facial expressions, that facilitates multimodal interaction among participants in the virtual environment using speech processing and animation techniques. Interactive collaboration can be further encouraged with the ability to share and manipulate 3-D objects in the virtual environment. A shared whiteboard makes it easy for participants in the virtual environment to convey their ideas graphically. We survey various kinds of capture devices used for providing the input for the shared whiteboard. Efficient storage of the whiteboard session and precise archival at a later time bring up interesting research topics in information retrieval. 相似文献
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在虚拟教室中电子白板系统的实现 总被引:3,自引:0,他引:3
提出了虚拟教室中电子白板系统的架构与实现;首先介绍了系统主要运用的计算机协同工作技术的概念,然后通过对几种实现技术的比较,着重讲述了如何运用Servlets高效地实现电子白板系统. 相似文献
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虚拟教室中电子白板系统的实现 总被引:2,自引:0,他引:2
提出了虚拟教室中电子白板系统的架构与实现,首先介绍了系统主要运用的计算机协同工作技术的概念,然后通过对几种实现技术的比较,着重讲述了如何运用Servlets高效的实现电子白板系统。 相似文献
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分析了交互式电子白板用于课堂教学的特点和优势,探究了交互白板应用于课堂的教学方法,分析了交互式电子白板用于课堂教学的研究方法与框架,阐述了交互式电子白板用于课堂教学的评价体系. 相似文献
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多媒体会议系统共享白板工具的设计与实现 总被引:1,自引:0,他引:1
本文从分析共享白板的功能入手,探讨了共享白板涉及的关键技术,如何可靠传输、发言权控制和远程指针技术。在此基础上,论述了义了共享白板的主要数据结构和信息分组格式,最后给出了共享白板工具SWB的主要实现。 相似文献
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Jingyan Lu Susanne P. Lajoie Jeffrey Wiseman 《International Journal of Computer-Supported Collaborative Learning》2010,5(3):283-298
Small-group medical problem-based learning (PBL) was a pioneering form of collaborative learning at the university level.
It has traditionally been delivered in face-to-face text-based format. With the advancement of computer technology and progress
in CSCL, educational researchers are now exploring how to design digitally-implemented scaffolding tools to facilitate medical
PBL. The “deteriorating patient” (DP) role play was created as a medical simulation that extends traditional PBL and can be
implemented digitally. We present a case study of classroom usage of the DP role play that examines teacher scaffolding of
PBL under two conditions: using a traditional whiteboard (TW) and using an interactive whiteboard (IW). The introduction of
the IW technology changed the way that the teacher scaffolded the learning. The IW showed the teacher all the information
shared within the various subgroups of a class, broadening the basis for informed classroom scaffolding. The visual records
of IW usage demonstrated what students understood and reduced the need to structure the task. This allowed more time for engaging
students in challenging situations by increasing the complexity of the problem. Although appropriate scaffolding is still
based on the teacher’s domain knowledge and pedagogy experience, technology can help by expanding the scaffolding choices
that an instructor can make in a medical training context. 相似文献